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CO2 Carbon Dioxide Sensors and Transmitters - Vaisala

CO2 Carbon Dioxide Sensors and Transmitters

Vaisala’s carbon dioxide instruments are suited to a wide range of applications from fermentation and fruit storages to safety and ventilation control.

Carbon Dioxide Measurement Products in Brief:

  • Transmitters, modules, and handheld  meters
  • Both ppm and percentage level carbon dioxide measurements
  • Proprietary CARBOCAP® sensor
  • Measurement based on infrared absorption of carbon dioxide

Benefits:

  • Superior stability with built-in reference measurement
  • Minimal maintenance and calibration requirements
  • Insensitive to dust, water vapor, and most chemicals
  • Insensitive to changing air flow

Information about 4-20mA Current Loops (this site, opens in a new tab)

NDIR = Non-Dispersive Infra Red (makes the sensor highly gas specific)

Prefer a printable PDF catalog? Download the Vaisala PDF Catalog (pdf, opens in a new tab)

NOTE: Products marked with “Configuration code required” need a product configuration form to be completed along with your order. The configuration code instructs our factory how you need the product configured such as scaling, outputs, cable lengths, mounting options etc. All configured products are made specifically to your order and most are delivered within 2 weeks (subject to occasional factory delays). Should you have any questions or need any support completing a configuration form, please contact our office.

Prices do not include GST and may change without notice.

 

How to Measure Carbon Dioxide (pdf, opens in a new tab)

Carbon dioxide measurement is required in many applications – building automation, greenhouses, to life science and safety. This document covers the following topics:

  • Operation principle of infrared carbon dioxide (CO2) sensors
  • The ideal gas law and how to use it to compensate the CO2 measurement for environmental factors
  • Optimal locations for CO2 transmitters
  • Safety issues related to CO2
CARBON DIOXIDE MEASUREMENT APPLICATIONS

For Food Technology, Horticulture, Environment

High concentrations of carbon dioxide results in unconsciousness and even death, see below.

As high concentrations of CO2 are clearly hazardous, most countries have set exposure limits in the workplace. In Great Britain, for instance, the weighted average exposure limit for an 8 hour working day is 5000 ppm; a higher limit of 15,000 ppm applies to an exposure up to 10 minutes.

Applications where carbon dioxide can rise to dangerous levels include the brewing and carbonated drinks industries, food freezing using dry ice, cold storage, cargo ships, and, of course, plants where CO2 or dry ice is produced or handled.

Air Quality and Ventilation

Even when the carbon dioxide concentration is not high enough to cause problems, it is a good indicator of indoor air quality in general. A high CO2 level is usually a sign of poor ventilation and the presence of odours and other pollutants such as volatile organic compounds (VOCs).

Poor ventilation also increases the risk of high humidity and in the worst case, a radon build-up in the building.
Demand Controlled Ventilation (DCV) is often based on carbon dioxide measurement. Higher concentrations of CO2 indicate the presence of people in the room.

Beneficial Effects in Greenhouses

On the positive side, carbon dioxide can enhance plant growth. In greenhouses and mushroom farms, the growth rate and development of mushrooms and plants – from cucumbers to most luxurious roses – can be improved by controlling the concentration of carbon dioxide.

This raises the productivity and quality of the crops. In some cases, the CO2 concentration is used to control when fruits and vegetables ripen. The concentration of CO2, however, must be carefully adjusted. If the carbon dioxide level rises too high, the plants can be damaged or their growth stunted.

Food Packaging

Adding carbon dioxide to food packaging can considerably extend the storage and shelf life of meat, cheese as well as fruit and vegetables. In meat packaging, for example, a high concentration of CO2 in the packaging inhibits bacterial growth and retains the natural coloring of the meat.

Effect of Different Levels of CO₂ on People

 

Concentration Effect
350 – 450 ppm Typical atmospheric concentration
600 – 800 ppm Acceptable indoor air quality
1,000 ppm Tolerable indoor air quality
5,000 ppm Average exposure limit over 8 hours
6,000 – 30,000 ppm Concern, short exposure only
3 – 8% Increased respiration rate, headache
> 10% Nausea, vomiting, unconsciousness
> 20% Rapid unconsciousness, death

CO2 Carbon Dioxide Sensors

GMP343 Carbon Dioxide Probe for Ecological Measurements


The Vaisala CARBOCAP® Carbon Dioxide Probe GMP343 is an accurate and rugged probe-type instrument for ecological measurements.
GMP343 Carbon Dioxide Probe for Ecological Measurements
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GMP343 Carbon Dioxide Probe for Ecological Measurements
Typical applications include CO2 soil respiration, ambient CO2 monitoring, plant growth chambers, and OEM applications. The GMP343 incorporates a single-beam, dual-wavelength CO2 measurement with no moving parts.

The GMP343 can output both numerically filtered and raw measurement data and it can also compensate the measurement with an internal temperature measurement and user-set relative humidity, pressure and oxygen values. In combination with the handheld GM70, the GMP343 provides a tool for accurate in-situ measurement. The GM70 can be used as a display, communication and data logging device.

Each GMP343 is calibrated using ±0.5 % accurate gases at 0 ppm, 200 ppm, 370 ppm, 600 ppm, 1000 ppm, 4000 ppm and 2 %. Calibration is also done at temperature points of -30 °C, 0 °C, 25 °C and 50 °C. If needed, the customer can re-calibrate the instrument using the multipoint calibration (MPC) feature allowing up to 8 user-defined calibration points.

Features
  • Excellent accuracy and stability
  • Vaisala CARBOCAP® Sensor, a silicon-based non-dispersive infrared (NDIR) sensor
  • A single-beam, dual-wavelength CO2 measurement with no moving parts
  • Compensation options for temperature, pressure, humidity and oxygen
  • Wide operating temperature and humidity ranges
  • Diffusion and flow-through models
  • For harsh environments

Key Benefits

Low operating costs

The GMP343 is a small, lightweight but rugged diffusion-aspirated or flow-through CO2 probe with low power consumption and heat emission designed for use in harsh environments, especially outdoors, which reduces the operating costs.

Stable and reliable
The GMP343 has good stability both in terms of time, and temperature and also in a good stability flow.
 
 

Data sheet on GMP343 Carbon Dioxide Probe (pdf, opens in a new tab)

Order form showing options for GMP343 (pdf, opens in a new tab)

Configuration code required
Part No Product Detail Price (ex-GST)
GMP343A CO2 Probe, diffusion aspiration $ 3130
GMP343B CO2 Probe, flow through aspiration $ 3422
 
Options, Spare Parts for GMP343

Options:
Options: Probe Cable(Selection 5)
   No cable (N) No Cable $No charge
  GMP343Z200 (A) 2m Probe Cable for GMM220 and GMP340 $ 36.-      2/16
  GMP343Z600 (B) 6m Probe Cable for GMM220 and GMP340 $ 58.-
  GMP343Z1000 (C) 10m probe Cable for GMM220 and GMP340 $ 66.-

Options: Measurement Indicator MI70 and accessories(Selection 6)
    No Accessories (0) No Accessories $No charge
    MI70&2MCABLE (1) MI70 with interface cable & accessories $ 1056.-
    DRW216050SP (2) Connection cable for MI70 $ 103.-

Options: Calibration accessories(Selection 7)
    No Accessories (N) No Accessories $No charge
    213100GM (A) Calibration adapter for GMP343A (diffusion model) $ 157.-
    (B) PC connection kit $ 202.-
    (C) Calibration adapter and PC connection kit $ 360.-

Options: Mounting accessories(Selection 8)
    No Accessories (0) No Accessories $No charge
    213101GM (1) Probe Mounting Flange for GMP343 $ 98.-

Options: Wiring accessories(Selection 9)
    No Accessories (N) No Accessories $No charge
    213106 (A) Junction box $ 44.-

GMP343: Spare Parts and Accessories
Accessories: Spare Parts
GMP343BRACKET Mounting bracket, spare part                      $ 92.-                2/16
GMP343FLANGE Probe mounting flange for GMP343, spare part $ 167.-
GMP343FILTER Dust filter including filter cover for GMP343,spare part $ 116.-
215521 PTFE filter for GMP343, spare part $ 175.-
GMP343ADAPTER Calibration adapter for GMP343A (the diffusion model) $ 182.-
JUNCTIONBOX-8 Junction box with 8-contacts, spare part $ 76.-

GMP343Z200SP 2m Probe Cable for GMM220 and GMP340 $ 66.-
GMP343Z600SP 6m Probe Cable for GMM220 and GMP340 $ 99.-
GMP343Z1000SP 10m Probe Cable for GMM220 and GMP340 $ 115.-
213379 PC Connection Cable $ 103.-
DRW216050SP Connection cable for MI70, spare part $ 103.-
219686 USB Cable D9, RS-232 $ 99.-
215519 Soil Adapter Kit – Horizontal Positioning of GMP343 $ 188.-
215520 Soil Adapter Kit for Vertical Positioning of GMP343 $ 188.-
19446ZZ RS232 Serial Interface Cable with D9 Female Connector $ 61.-

CO₂ Probe GMP231 for CO₂ incubators


The Vaisala CARBOCAP® Carbon Dioxide Probe GMP231 is designed to provide incubator manufacturers with accurate and reliable carbon dioxide measurements and sterilization durability at high temperatures, up to 180 °C.
CO₂ Probe GMP231 for CO₂ incubators
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CO₂ Probe GMP231 for CO₂ incubators

The GMP231 probe is based on Vaisala’s patented CARBOCAP® technology and a new type of infrared (IR) light source.

The GMP231 probe’s sensor performance is optimized at 5 % CO2 but the sensor measures CO2 up to 20 % with high accuracy. The GMP231 is t’s installed through the incubator wall; only the IR sensor and optical components are exposed to the incubation environment.

In addition, the GMP231 can measure pressure and temperature for CO2 measurement compensation purposes, ensuring the product remains stable and accurate in all CO2 incubation conditions.

The sensor is made of highly durable materials to achieve outstanding stability over both time and temperature. Since water vapor, dust, and most chemicals do not affect measurements, the GMP231 module is ideal for CO2 incubator environments.

Features:

  • Probe durable during heat sterilization up to +180°C (+356°F)
  • Based on the latest infrared CO2 sensor technology
  • Designed for OEM use in CO2 incubators – installation options available
  • CO2 sensor measurement optimized for 5%CO2, measurement range up to 20%CO2
  • 4-point traceable calibration (certificate included) for CO2
  • Internal pressure and temperature measurement improve accuracy and stability
  • Full temperature and pressure compensation available
  • Sensor head heating for condensation prevention​​

Key Benefits:

Lower risk of cross contamination
The incubator can be sterilized with the GMP231 probe in place. There is no need to decontaminate the probe separately. In addition to reducing the risk of contamination, this also saves time.

Stable and accurate
The materials used in the GMP231 and also the internal pressure and temperature measurements all contribute to the excellent stability and accuracy of the sensor.

Data sheet on GMP231 (pdf, opens in a new tab)
GMP231 Order Form (pdf, opens in a new tab)

Part No Product Detail Price (ex-GST)
GMP231A 0…20% standard CO2 Probe
Operating CO2 measurement 0…70°C, standby up to +195°C
$ 1136
 
Options, Spare Parts and Accessories for GMP231

Options:Cable(Selection 7)
No Cable (A) no cable $No charge
90cm Cable (B) Cable with open wires (90cm) $ 44.-
Custom Cable (C) Customized Cable (with Milli-Grid connector) $ 44.-

Options:Mounting(Selection 8)
No Mounting (1) no mounting accessories $No charge
Silicon Plug (2) Silicon Plug for sensor mounting (Ø ~44mm) $ 29.-
Silicon Plug+Metal F (3) Silicon Plug for sensor mounting (Ø ~44mm) +Metal Flange $ 44.-

DRW240977SP M12 Connection Cable 0.9m w/ open ends $ 44.-
ASM210903SP M12 Connection Cable 0.6m w/ Milli-Grid connector $ 44.-
DRW240015SP Silicon Plug $ 29.-
DRW240247SP Attachment Bracket $ 29.-
DRW240494SP PTFE filter $ 29.-
221040 USB PC Connection cable $ 98.-
221801 MI70 Connection cable $ 130.-
239523 Calibration adapter for GMP231 $ 73.-

 

GMP251 Compact % Level CO2 Probe for demanding use


GMP251 is a new intelligent probe for measuring carbon dioxide. This robust, stand-alone measurement device is designed for use in demanding applications, like life science incubators, where stable, accurate performance is required.
GMP251 Compact % Level CO2 Probe for demanding use
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GMP251 Compact % Level CO2 Probe for demanding use
The Vaisala CARBOCAP® Carbon Dioxide Probe GMP251 is an intelligent, stand-alone, %-level probe for measuring CO2 in life science incubators, cold storage facilities, fruit and vegetable transportation, and in all demanding applications where stable and accurate percentage-level CO2 measurements are needed. The operating temperature range is -40 … +60 °C and the measurement range is 0 … 20%CO2.

The GMP251 is based on Vaisala’s unique, second-generation CARBOCAP® technology that enables exceptional stability. A new type of infrared (IR) light source is used instead of the traditional incandescent light bulb, which extends the lifetime of the GMP251. It has full temperature and pressure compensations of CO2 measurement – integrated temperature measurement for compensation purposes. The sensor head is heated to prevent condensation. Digital output over RS-485: Modbus & Vaisala Industrial Protocol. A calibration certificate is always included with the product

The GMP251 probe is part of the Indigo product family and can also be connected to the Indigo500 and Indigo200 series transmitters to extend its features, for example, for a display or relays.

The GMP251 can also be used with with the free Insight PC Software.

For spot-checking, the ideal choice is the Handheld CO2 Meter GM70.

The GMP251 replaces the following discontinued products: GMM221 and GMT221. Please note that spare parts and accessories for the GMP221 probe are still available and can be purchased in the Vaisala online store.

Features
  • Measurement range 0 … 20 %CO₂
  • Intelligent, stand-alone probe with analog (V, mA) and digital (RS485) outputs
  • Superior long-term stability with the 2nd-gen proprietary CARBOCAP® technology
  • Wide operating temperature range -40 … +60 °C
  • IP65 classified housing
  • Full temperature and pressure compensations
  • Integrated temperature measurement for CO₂ compensation purposes
  • Compensations for background gases, O₂, and humidity
  • Sensor head heated to prevent condensation

Key Benefits

Easy to use and clean
The GMP251 is a all-in-one probe, which makes it easy and fast to install. The probe is resistant to dust and most chemicals, such as, H2O2 and alcohol-based cleaning agents. The probe’s surface is smooth, which makes it easy to clean.
Reliable and accurate
With the wide operating temperature range, the GMP251 is suitable for a large number of applications. The probe provides accurate and stable measurements also in varying conditions.
 
 

Data sheet on GMP251 Carbon Dioxide Probe (pdf, opens in a new tab)

Insight PC Software For Easy Access to Indigo Compatible Probes (pdf, opens in a new tab)

Configuration code required
Part No Product Detail Price (ex-GST)
GMP251 Carbon Dioxide Probe for % Level Measurements $ 757
 
GMP251: Options, Spare Parts & Accessories

Options: Probe Type (Selection 1)
0…20% (A) 0…20% CO2 range with standard filter $No charge
0…10% (B) 0…10% CO2 range with standard filter $No charge
0…5% (C) 0…5% CO2 range with standard filter $No charge
0…2% (B) 0…2% CO2 range with standard filter $No charge
0…20% (B) 0…20% CO2 range with flow-through adapter $ 29.-

Options: Output Mode (Selection 2)
RS485 Modbus (0) RS485 Modbus Protocol $No charge
RS485 Vaisala (1) RS485 Vaisala Protocol $No charge
4…20 mA* (2) 4…20 mA analogue output $No charge
0…20 mA* (3) 0…20 mA analogue output $No charge
0…5 V* (4) 0…5 V analogue output $No charge
0…10 V* (5) 0…10 V analogue output $No charge
*NOTE: Analog output mode requires grounding of pin 5, connecting to pin 3
Options:Temperature Compensation(Selection 3)
Setpoint 25°C** (A) Temperature Setpoint 25°C** $No charge
Setpoint 37°C** (B) Temperature Setpoint 37°C** $No charge
Active Internal*** (C) Active Internal Compensation $No charge
**NOTE: Compensation Setpoint can be updated via RS485 communications
***NOTE: Uses probe internal sensing. Accuracy limited to ±3 °C in typical

Options: Background Gas Compensations (Selection 5)
0 %O2, 0 %RH** (A) Background gas setpoint 0 %O2, 0 %RH** $No charge
21 %O2, 50 %RH** (B) Background gas setpoint 21 %O2, 50 %RH** $No charge
19.7 %O2, 93 %RH** (C) Background gas setpoint 19.7 %O2, 93 %RH** $No charge
**NOTE: Compensation Setpoint can be updated via RS485 communications

Options: Cable (Selection 6)
No cable (0) No Cable $No charge
223263 (1) Cable with open wires (1.5m) $ 44.-
CBL210347 (2) High temperature durable cable (special plug)** $ 66.-
244669 (3) Cable with open wires and 90° plug (0.6m) $ 44.-
216546 (4) Cable with open wires (10m) $ 73.-
**NOTE: Can only be ordered in multiples of 10, Only useable with mA output

Options: Mounting (Selection 7)
No mounting (0) No mounting accessories $No charge
243257SP (1) Probe Mounting Clips $ 17.-
243261SP (2) Probe Mounting Flange $ 58.-

GMP251: Spare Parts and Accessories
Spare Parts and Accessories:

ASM211650SP Standard Membrane Filter, Dia 24.8mm $ 29.-
DRW243649SP Porous Sintered PTFE filter, Dia 24.8mm $ 44.-
ASM211697SP Flow-through adapter with gas ports, Dia 24.8mm $ 73.-
223263SP Cable with open wires (1.5m) $ 44.-
244669SP Cable with open wires and 90° plug (0.6m) $ 44.-
216546SP Cable with open wires (10m) $ 78.-
CBL210347SP High temperature durable cable (special plug), M12 5pin $ 66.-
      NOTE: Can only be ordered in multiples of 10, Only useable with mA output
243257SP Probe Mounting Clips (2 pcs) $ 29.-
243261SP Probe Mounting Flange $ 73.-
242659 USB cable for PC connection $ 95.-
CBL210472 MI70 connection cable for probe $ 204.-
DRW244827SP Calibration Adapter $ 116.-

GMW80 Series Carbon Dioxide and Temperature Transmitters for Demand-Controlled Ventilation


Vaisala GMW80 Series Carbon Dioxide and Temperature Transmitters are designed for convenience, reliability and cost efficiency in demand-controlled ventilation applications.
GMW80 Series Carbon Dioxide and Temperature Transmitters for Demand-Controlled Ventilation
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GMW80 Series Carbon Dioxide and Temperature Transmitters for Demand-Controlled Ventilation

The Vaisala CARBOCAP® Carbon Dioxide and Temperature Series GMW80 transmitters are wall-mount transmitters designed to fulfill the needs for CO2 measurements in standard demand-controlled ventilation applications. The CO2 measurement is based on a second-generation CARBOCAP® sensor, which uses a novel, microglow light source instead of an incandescent light bulb for a longer trouble-free lifetime.

The internal reference in the CO2 sensor guarantees the best stability and operation also in constantly occupied buildings without frequent readjustments. The CARBOCAP® sensors give correct CO2 measurements immediately when powered on as they have a built-in reference measurement. Proper operation can be verified immediately after snapping on the device cover.

Features
  • Cost-efficient, affordable
  • Reliable and maintenance-free operation for up to 15 years
  • Superior stability due to 2nd generation proprietary CARBOCAP technology
  • Improved accuracy due to low self-heating of microflow light source
  • Easy to install, easy to use
  • The internal reference in the CO2 sensor guarantees the best stability and operation even in buildings occupied 24/7
  • Ideal for demand-controlled ventilation

Key Benefits

Easy to install

The installation of one unit takes less than 2 minutes. With modern buildings often having hundreds of sensors, the installation time per unit can be a significant cost factor. Returning to the building site to check sensor operation adds further costs.

The GMW80 series transmitters include a number of subtle design features that have been introduced to make installation and commissioning quick and easy. The pull-out tab makes opening the transmitter faster than before, while also doubling as a quality check slip and holder for the anti tamper screw. The back plate can be twisted onto pre-mounted screws, and the wiring can be done easily on the clearly marked back plate. The electronics can be snapped on later when the building automation system is commissioned.

Reliable Operation

The GMW80 series transmitters are optimized for low maintenance. The second-generation, low-power CARBOCAP® technology enables a longer lifetime and superior stability than ever before. As the power consumption is low, the heat generated by the electronics does not distort the temperature inside the sensor. The internal reference in the CO2 sensor guarantees the best stability and operation even in constantly occupied buildings without frequent readjustments. The reliable operation and accurate measurement values of the GMW80 series transmitters contribute to the significant cost savings brought by demand-controlled ventilation.

Data sheet on GMW80 Series (pdf, opens in a new tab)

 
Part No Product Detail Price (ex-GST)
GMW86P CO2+T transmitter, 0…2000ppm, Pt1000 $ 189
GMW86PT CO2+T transmitter, 0…2000ppm, Pt1000, T set point 10KΩ $ 218
GMW83 CO2+T transmitter, 0…2000ppm, 2 x 0…10V $ 204
GMW83T CO2+T transmitter, 0…2000ppm, 2 x 0…10V, T set point 10KΩ $ 233
GMW83A CO2+T transmitter, 0…2000ppm, 2 x 0…10V, CO2 LED:s $ 233
GMW83D CO2+T transmitter, 0…2000ppm, 2 x 0…10V, Display $ 248
GMW83RP CO2+RH+T transmitter, 0…2000ppm, 3 x 0..10V, Pt1000 $ 262
GMW83DRP CO2+RH+T transmitter, 0…2000ppm, 3x 0..10V, Pt1000, Disp $ 306
GMW83RPC CO2+RH+T transmitter, 0…2000ppm, 3x 0..10V, Pt1000 $ 335
(1 pt calibration)
GMW83DRPC CO2+RH+T transmitter, 0…2000ppm, 3x 0…10V, Pt1000 $ 379
Display, 1 pt calibration
GMW84 CO2+T transmitter, 0…2000ppm, 2 x 4…20mA $ 204
GMW84S CO2+T transmitter, 0…2000ppm, 2 x 4…20mA $ 233
 
GMW80 Spare Parts

GM10SP80 Replacement Digital CO2 module for GMW80 series $ 131.-
15778HM INTERCAP® Sensor $ 73.-

CO2, Temperature and Humidity Transmitter Series GMW90 for green building projects


The wall-mounted Vaisala GMW90 Series CARBOCAP® Carbon Dioxide, Temperature and Humidity Transmitters are especially suited for green building projects and demand controlled ventilation.
CO2, Temperature and Humidity Transmitter Series GMW90
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CO2, Temperature and Humidity Transmitter Series GMW90

The devices measure carbon dioxide and temperature and have an option for an additional humidity measurement. The instruments come with a calibration certificate that meets traceability and compliance requirements. Traceability is easily maintained with field-exchangeable intelligent measurement modules. The transmitter can be blended into the interior design of the space where it is installed using the optional decorative cover.

The recommended calibration interval is five years.

Features:

  • Measured parameters: carbon dioxide, temperature, and humidity (optional)
  • Superior long-term stability with the next generation Vaisala CARBOCAP sensor
  • Accurate temperature and humidity measurements due to the low-power microglow infrared source
  • Quick and easy installation and maintenance
  • Calibrated, user-exchangeable measurement modules
  • 3-point traceable CO2 calibration (certification included)
  • Both analog and digital communication (BACnet/Modbus)
  • Optional decorative cover blends the transmitter into your interior design
 

Key Benefits:

Easy installation
The GMW90 Series Transmitters have been designed for quick and easy installation. Every model includes a display for easy startup. To protect the sensor from dust and dirt during construction and installation, the units can be cabled with back-plate only. Electronics can be snapped on later at an appropriate phase in the construction project. This saves installation time in the project.

Convenient calibration
Regular instrument maintenance guarantees a long product lifetime although the transmitter’s inspection interval is five years. Calibration is easiest using the exchangeable measurement modules. Sensor traceability and measurement quality is easily maintained by snapping on a new module calibrated at Vaisala factory. The instrument can also be calibrated using a hand-held meter or reference gas CO2 bottle. The service interfaces are easy to reach by simply sliding the cover down. The closed cover keeps the measurement environment stable during calibration and ensures a top-quality final result.

GMW90 family includes the following models:
GMW93(D) CO2+T, voltage output (with display)
GMW93R(D) CO2+T+RH, voltage output (with display)
GMW93RA CO2+T+RH, voltage output with CO2 indicator LED and display
GMW94(D) CO2+T, current output (with display)
GMW94R(D) CO2+T+RH, current output (with display)
GMW95(D) CO2+T, digital model (with display)
GMW95R(D) CO2+T+RH, digital model (with display)

Data sheet on GMW90 (pdf, opens in a new tab)

Part No Product Detail Price (ex-GST)
GMW90 CO2+T transmitter, configurable $ 459
GMW90R CO2+RH+T transmitter, configurable $ 604
GMW93 CO2+T transmitter Voltage output $ 444
GMW93D CO2+T transmitter, 0…10V output with display $ 444
GMW93R CO2+RH+T transmitter, 0…10V output $ 590
GMW93RA CO2+RH+T transmitter, 0…10V output with LED indicator $ 604
GMW93RD CO2+RH+T transmitter, 0…10V output with display $ 590
GMW94 CO2+T transmitter, 4…20mA output $ 444
GMW94D CO2+T transmitter, 4…20mA output with display $ 444
GMW94R CO2+RH+T transmitter, 4…20mA output $ 590
GMW94RD CO2+RH+T transmitter, 4…20mA output with display $ 590
GMW95 CO2+T transmitter, Modbus/BACnet $ 444
GMW95D CO2+T transmitter, Modbus/BACnet with Display $ 444
GMW95R CO2+RH+T transmitter, Modbus/BACnet $ 590
GMW95RD CO2+RH+T transmitter, Modbus/BACnet with Display $ 590
 
Options, Spare Parts & Accessories for xMW90 Series

236285 Decorative Cover set for XMW90 family 10pcs $ 146.-      2/16
Solid Cover White RAL9003 FOC
Display Cover White RAL9003 FOC
Solid Cover Black RAL9005 $ 15.-
Display Cover Black RAL9005 $ 15.-
Solid Cover No Logo RAL9003 $ 15.-
Display Cover No Logo RAL9003 $ 15.-
Indicator Cover (RAL9003, display and CO2 indicators) $ 15.-

GMW90 Spare Parts and Accessories:
*Supplied with Calibration Certificate
GM10SP Replacement Digital CO2 module for GMW90 series $ 236.-
HTM10SP Digital Humidity and Temperature Module* $ 218.-
TM10SP Digital Temperature Module* $ 73.-
219980SP Connection cable for HM70 hand-held meter $ 150.-
219690 USB cable for PC connection $ 99.-
DRW237339SP Sliding cover HMW90 Spare Parts $ 29.-
DRW237354SP Sliding cover, blank HMW90 Spare Parts $ 29.-

GM20 Series Carbon Dioxide Transmitters for Demand Controlled Ventilation


With stainless steel isolation diaphragm diffusion silicon pressure core body, the pressure core body adopts the process of laser trimming resistor for a wide temperature range of zero and sensitivity temperature compensation.
GM20 Series Carbon Dioxide Transmitters for Demand Controlled Ventilation
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GM20 Series Carbon Dioxide Transmitters for Demand Controlled Ventilation

The duct-mounted Vaisala CARBOCAP® Carbon Dioxide Transmitter Series GMD20 are specially designed for demand-controlled ventilation (DCV). They are easy to install and require no maintenance. The GMD20 transmitters use the silicon-based Vaisala CARBOCAP® Sensor. The simple structure and reference measurement capabilities make this Single-Beam, Dual-Wavelength NDIR sensor extremely stable and reliable. The CO2 concentration is measured inside the duct without risks for leaks or wrong flow direction affecting the measurement. In addition, the measurement accuracy is not affected by dust, water vapor and most chemicals.

The GMD20 series transmitters can be used independently, or incorporated into building energy management systems. The series consists of duct mount units GMD20 and GMD20D. Version D has a display. The duct units’ compact sensor head design fits inside the ventilation duct, eliminating the risk of leaking gaskets and measurement errors.

The recommended calibration interval is five years.

Features:

  • Leak insensitive in-duct measurement
  • Incorporates the Vaisala CARBOCAP® sensor – the silicon based NDIR
  • Excellent long-term stability
  • Negligible temperature dependence
  • Five year recommended calibration interval
  • Warranty time 2 years

Specifications:

Measurement range: 0…2000 ppm (nominal, can be calibrated for other ranges)
Accuracy: ± 30 ppm + 2 % of reading
Operating temperature: -5…+45 °C

The GMW20 series transmitters can be used independently or they can be incorporated into building energy management systems.

The individual sensor types have a 3rd letter in the part no, e.g. GMD… (duct mount) or GMW… (wall mount)

The GMW20 series transmitters are wall mount, and available in two sizes (GMW21 and GMW22).
The GMD20 is a duct mountable transmitter.

Optional LonMark® approved interface modules are available for digital communication between the transmitters and a LonWorks network.

An analogue temperature option is available for the GMW21.
The GMA20T offers active temperature measurement using a semiconductor sensor IC.
The measurement module has a voltage output of 0…10 V, corresponding to a measurement range of 0…50 ºC.
The accuracy of the module is 0.5 ºC.

Nominal range of the CO2 sensors is 0..2000ppm.
They can be calibrated for other ranges: 0…5000ppm, 0…10,000ppm, 0…20,000ppm

Data sheet on GMD20 (pdf, opens in a new tab)

Part No Product Detail Price (ex-GST)
GMD20 0-2000 ppm, duct mount transmitter with 0-20mA, 4-20mA or 0-10V outputs, diffusion aspirated for 0…2000ppm
Supply voltage 18…30VDC. 24VAC.
$ 349
GMD20D Duct mount CO2 transmitter for 0…2000ppm, display & relay $ 393
 
Options for GMx2x Series:

GMI 21 Display option and Relay output $ 114.-            2/16   These items are also listed below under GMM20W description
GMR 20 Relay output $ 79.-
GML20 LonWorks option $ 221.-
19412GM Disk (with XIF file) for Installation of GMD/W20 with GML20 $ 15.-
19748GM Disk (with XIF file) for Installation of GMD/W20 with GML20T $ 15.-
19222GM Calibration software kit for GMD/W20 series $ 189.-
( Disk + RS232 serial COM adapter )
19040GM Serial COM Adapter (Vaisala Model) $ 189.-

Handheld CO₂ Meter GM70 for spot-checking applications


The Vaisala CARBOCAP® Hand-held Carbon Dioxide Meter GM70 measures volume concentration of CO2 in the units of ppm or %. It is a user-friendly meter for demanding spot measurements in laboratories, greenhouses, mushroom farms, and for ensuring CO2 safety during soft drink bottling processes.
GM70 Hand Held CO2 Meter
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GM70 Hand Held CO2 Meter

The measurement accuracy is not affected by dust, water vapor or most chemicals. The meter can also be used in HVAC and industrial applications, and as a tool for checking Vaisala’s fixed CO2 instruments. Also the GMW90 can also be adjusted by using the GM70 meter.

The optional GM70 pump enables pump-aspirated sampling from difficult to access areas, such as incubators and chambers. Two sampling methods are available: the handle is for handheld diffusion sampling and the GM70 pump enables pump-aspirated sampling from locations difficult to access otherwise.

The handheld meter has two probe inputs; Vaisala’s relative humidity and dew point probes can also be used simultaneously with the CO2 measurement. The GM70 has a short warm-up time and is ready for use almost immediately. It has a menu-based interface, a graphical LCD display and data logging capability.

The optional MI70 Link Windows® software in combination with a USB connection cable is used to transfer logged data and real time measurement data from the GM70 to a PC.

Features:

  • Two optional sampling methods: diffusion or pump aspiration
  • Numerical and graphical display of measurements
  • Data can be logged and transferred to PC via MI70 Link software
  • Multi-probe operation; dew point and relative humidity probes can also be connected
  • Suitable for field checking of fixed CO2 instruments
  • Short warm-up time
  • Wide selection of measurement ranges

Key Benefits:

User-friendly
The GM70 has a numerical and a graphical display for easy viewing of the data with a logging capability. The user interface is available in nine languages.

Wide measurement ranges
The GM70 allows you to choose the measuring range that best suits your application.

Easy sampling
The GM70 incorporates two sampling methods: the handle is for hand-held diffusion sampling and the pump enables pump-aspirated sampling from locations difficult to access by other means.

Data sheet on GM70 (pdf, opens in a new tab)
GM70 Order Form (pdf, opens in a new tab)

Part No Product Detail Price (ex-GST)
MI70AUS Indicator with backlit LCD display.
Displays up to 3 parameters at a time either numerically or graphically.
Includes data logging and can be used as a field calibrator for Vaisala transmitters.
Complete with rechargeable battery and AC adapter
$1340
GMH70SUB CO2 probe for MI70.
CO2 measurement ranges of
0 .. 2 %, 0 .. 3 %, 0 .. 5%, 0 .. 10%, 0 .. 20 %, 0 .. 2000 ppm, 0 .. 3000 ppm, 0 .. 5000 ppm, 0 .. 7000 ppm, 0 .. 10000 ppm.
Please specify range when ordering.
$1530
GM70PSUB CO2 probe and pump for MI70.
CO2 measurement ranges of
0 .. 2 %, 0 .. 3 %, 0 .. 5%, 0 .. 10%, 0 .. 20 %, 0 .. 2000 ppm, 0 .. 3000 ppm, 0 .. 5000 ppm, 0 .. 7000 ppm, 0 .. 10000 ppm.
Please specify range when ordering.
$2310
 
Options, Spare Parts and Accessories for GM70

 Configuration code required for GM70

GM70: Options
Options:Indicator Type (selection 1)
MI70AUS (E) Measurement Indicator with AC adapter and rechargeable batteries $ 874.-    2/16
(Suitable for use with HM70, GM70, DM70 & MM70 probes)

Options:Indicator Accessories (selection 2)
(0) No Indicator Accessories $No charge
MI70Link (1) MI70 Windows software with RS232 cable $ 100.-
27168ZZ (2) MI70 Analogue output cable $ 47.-
(3) MI70Link with RS232 and analog output signal cables $ 146.-
219687 (4) USB cable for MI70 with MI70Link Windows® software $ 100.-

Options:Transmitter connection cable (selection 3)
(0) No indicator cable $No charge
GMA70 (1) Adaptor cable for transmitter $ 236.-

Options:Sampling Method (selection 4)
GMH70SUB CO2 probe and handle (see ranges below) $ 1092.-
GM70PSUB CO2 probe and pump (see ranges below) $ 1899.-
Available Ranges: 0..2000/3000/5000/7000 & 10000 ppm
0..2%, 0..3%, 0..5%, 0..10% and 0..20%.
Please specify the range when ordering

Options:Probe Accessories (selection 6)
(0) No Accessories $No charge
26150GM (1) Field checking adapter for GMT220/GM70/GMM220 $ 118.-

Options:Carry case (selection 8)
(1) No carrying case $No charge
MI70CASE3 (2) Waterproof carry case (MI70CASE3) $ 335.-
GM70: Spare Parts and Accessories

Accessories:AC-Adapters
MI70AUSADAPTER AC Adapter for use with MI70 $ 82.-
26755 Rechargeable NiMH Battery Pack $ 44.-

Accessories:Connection Cables
27168ZZ MI70 Analogue output cable $ 47.-
GMA70 Connection cable for fixed CO2 instruments $ 236.-
219687 USB cable for Mi70 with Mi70Link Windows® software $ 100.-
MI70Link MI70 Windows software with RS232 cable $ 100.-
213107SP 10m extension cable for the MI70 probes $ 83.-

Accessories:Carrying cases
MI70CASE3 Waterproof carry case $ 335.-

Accessories: Others
GMP 221 Spare CO2 probe for GMT 221 $ 699.-
GMP 222 Spare CO2 probe for GMT 222 $ 699.-
25378GMSP Spare Filter + Cap for GMP221 $ 44.-
25879GMSP Spare Filter + Cap for GMP222 $ 44.-
GM70PUMP Pump unit for GM70 $ 1310.-
GMH70 Spare Handle for GM70 $ 510.-
26150GM Field checking adapter for GMT220/GM70/GMM220 $ 118.-
212807GM Moisture Exchanger (0.6m Nafion tubing) $ 437.-

GMM220 Series – GMM221 & GMM222


The Vaisala CARBOCAP® Carbon Dioxide Module Series GMM220 withstand harsh conditions. They provide high carbon dioxide measurement accuracy over wide temperature and relative humidity ranges.
GMM220 Series - GMM221 & GMM222
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GMM220 Series - GMM221 & GMM222

The Vaisala CARBOCAP® Carbon Dioxide Module Series GMM220 are designed for Original Equipment Manufacturers (OEM’s) requiring carbon dioxide measurements in harsh and demanding applications.

Features:

  • Incorporates Vaisala CARBOCAP® – the silicon based CO2 sensor
  • Choice of several measurement ranges
  • IP65 protected probe against dust and spray water
  • Interchangeable probes provide easy maintenance
  • Modules optimized for integration into equipment for greenhouse control, incubators, fermentors, safety alarming and integrated systems.

Vaisala CARBOCAP®
The GMM220 series modules incorporate the industrial Vaisala CARBOCAP® Sensor. The patented sensor has unique reference measurement capabilities. Its critical parts are made of silicon; this gives the sensor outstanding stability over both time and temperature.
Since water vapor, dust, and most chemicals do not affect the measurement, the GMM220 series modules can be used in harsh and humid environments.

Interchangeable Probes
The GMP220 probes are interchangeable. They can be removed, reattached or replaced at any time – without the need for calibration and adjustment. The interchangeable probes make calibration and field service easy. In addition, the measurement range can be changed simply by replacing one probe with another.

Different Configurations
The user has a choice of measurement ranges up to 20 % CO2: the Vaisala CARBOCAP® Carbon Dioxide Module GMM221 for higher and the Vaisala CARBOCAP® Carbon Dioxide Module GMM222 for lower concentrations of CO2.
Different power supply voltages, output options, as well as cable lengths, connectors, and mounting gear are also available.

Data sheet on GMM220 (pdf, opens in a new tab)
Configuration code required

Part No Product Detail
GMM 221 OEM module includes probe for %CO2 measurement. $ 852.-
Available ranges: 0..2%, 0..3%, 0..5%, 0..10% and 0..20%.
Please specify the range when ordering
No probe cable supplied
GMM222 OEM module includes probe for ppm CO2 measurement. $ 852.-
Available ranges: 0..2000/3000/5000/7000 & 10000 ppm.
Please specify the range when ordering
No probe cable supplied
 
Cables, Options, Spare Parts for GMM220 Series - GMM221 & GMM222

Options:Probe Cable(Selection 10)
GMM220Z60 (A) 0.6m Probe cable for GMM220 $ 29.-
GMM220AZ60 (B) 0.6m Probe cable with 90° Conn. for GMM220 $ 29.-    2/16
GMM220Z200 (C) 2m Probe Cable for GMM220 $ 44.-
GMM220Z600 (E) 6 m Probe Cable for GMM220 $ 58.-
GMM220Z1000 (G) 10 m Probe Cable for GMM220 $ 66.-
GMM220Z100 (H) 1m High T (150 °C) Probe cable for GMM220 $ 66.-

Options:Probe Installation accessories(Selection 4)
25245GM Probe mounting clips (2 pieces) $ 15.-
GM45156 Probe mounting flange $ 70.-
26150GM Field checking adapter for GMT220/GM70/GMM220 $ 118.-

Spare Parts:
GMP 221 Spare CO2 probe for GMM 221 $ 699.-
GMP 222 Spare CO2 probe for GMM 222 $ 699.-
GMM220Z100SP 1m High T (150°C) Probe cable for GMM221/222 $ 99.-
GMP343Z200SP 2m Probe Cable for GMM221/222 $ 66.-
GMP343Z600SP 6 m Probe Cable for GMM221/222 $ 99.-
GMP343Z1000SP 10 m probe Cable for GMM221/222 $ 115.-
25245GMSP Probe mounting clips (2 pieces), Spare Part $ 44.-
GM45156SP Probe mounting flange, Spare Part $ 82.-
GMM220BOARD Spare Module Board GMM221/GMM222 $ 218.-

GMM110 Series: Transmitter and Module Series

GMM111 OEM Carbon Dioxide Module for HVAC Applications


The Vaisala CARBOCAP® Carbon Dioxide Module GMM111 is a CO measurement module with flow-through aspiration.
GMM111 OEM Carbon Dioxide Module for HVAC Applications
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GMM111 OEM Carbon Dioxide Module for HVAC Applications

The Vaisala CARBOCAP® Carbon Dioxide Module GMM111 is designed especially for control of biological processes where high CO2 concentrations are used. It has 3 optional measurement ranges 0 … 5/10/20 % CO2. The GMM111 is a flow-through model and has barbed connectors for attaching the in and out flow tubes. As the module is not mounted in the chamber, the chamber can be heatsterilized without removing the module.

The Vaisala CARBOCAP® CO2 sensors have been proven to be accurate and durable. They have an excellent long-term stability, which decreases maintenance. The superior performance of Vaisala CARBOCAP® sensors results largely from the stable reference provided by the electrically tunable Fabry-Perot Interferometer(FPI).

The tunable FPI filter measures CO2 absorption, and simultaneously a reference wavelength. This internal reference measurement compensates effectively for any changes in the optical path, such as light source intensity changes and contamination. In the HVAC market, this type of reference measurement is a unique feature to Vaisala CARBOCAP® products.

The true internal reference measurement of Vaisala CARBOCAP® CO2 transmitters provides years of stable CO2 measurements.

Features:

  • Compact CO2 module with flow-through aspiration
  • Ideal for control of CO2 concentrations in incubators
  • Incorporates Vaisala CARBOCAP®, the silicon based NDIR sensor with unique internal referencing
  • Advanced single-beam, dual wavelength measurement with no moving parts
  • Measurement range options 0 … 5 %, 0 … 10 % and 0 … 20 % CO2
  • Excellent long-term stability

Data sheet on GMM111 (pdf, opens in a new tab)

Part No Product Detail Price (ex-GST)
GMM111 0-2000 ppm, OEM transmitter
with 4-20mA or 0-10V outputs, diffusion aspirated. Supply voltage 24VAC/VDC.
$ 510
 

GMM112 OEM Carbon Dioxide Module for HVAC Applications


The Vaisala CARBOCAP® Carbon Dioxide Module GMM112 is a compact module for measuring ppm (parts per million) levels of carbon dioxide.
GMM112 OEM Carbon Dioxide Module for HVAC Applications
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GMM111 OEM Carbon Dioxide Module for HVAC Applications

The Vaisala CARBOCAP® Carbon Dioxide Module GMM112 is a compact module for measuring ppm (parts per million) levels of carbon dioxide.
The GMM112 module is designed for indoor use in demand controlled ventilation and other applications requiring carbon dioxide control.

The GMM112 has three optional ranges to select from: 0…2 000 ppm, 0…5 000 ppm and 0…10 000 ppm. The selectable analog (current and voltage) and digital outputs make it easy to integrate to various control systems. The GMM112 modules are easy to install and need practically no maintenance.

Proven Performance with the Vaisala CARBOCAP® Sensor
The GMM112 module includes Vaisala CARBOCAP® carbon dioxide sensor, a silicon-based infrared (IR) absorption sensor. The excellent long-term stability of the CARBOCAP® sensor results from its unique measurement technology. The sensor features an electrically tunable Fabry-Perot Interferometer for built-in reference measurement. The sensor not only measures CO2 absorption but also a reference, which makes it possible to compensate for potential
light intensity variations and contamination and dirt accumulation in the optical path, making the sensor extremely stable over time.

CARBOCAP sensor has no need for any compensation algorithms that are used in more simple sensors to compensate for their drift. In applications with constant elevated levels of carbon dioxide and in buildings with around-the- clock occupancy (e.g. hospitals, manufacturing facilities, residential buildings, and retirement homes) the compensations based on assumed background carbon dioxide level simply do not work.

Features:

  • Compact OEM module for demand controlled ventilation and other CO2 measurement applications
  • Incorporates Vaisala CARBOCAP®, the silicon based NDIR sensor with unique internal referencing
  • Advanced, single-beam, dual wavelength measurement with no moving parts
  • Excellent long-term stability
  • Ideal for ventilation control in all types of occupied spaces

Data sheet on GMM112 OEM Carbon Dioxide Module for HVAC Applications (pdf, opens in a new tab)

Part No Product Detail Price (ex-GST)
GMM112 CO2 Module GMM112 $ 277
 

Obsolete and Superseded Products

GMD20(D) duct-mount transmitter (with display) now superseded by GMW80 above

GMW21(D) wall-mount transmitter (with display) now superseded by GMW80 above

GMW115 Carbon Dioxide Transmitter for Demand Controlled Ventilation 

GMW116 Carbon Dioxide and Temperature Transmitter

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