µSmart Water Quality Sensors
Each
µSmart sensor incorporates a microprocessor providing
linearised
and standardised outputs, 16 bit resolution (1 part in 65,000) and
output
signals: analog, ASCII data output/input via serial interface, pulse,
control & alarm outputs.
Each unit is provided with a multi-point
calibration curve for maximum accuracy across the range.
For the general
description and many features of µSmart sensors see near the top of the
"Environmental Monitoring" page.
µSmart sensors can be programmed with the data I/O line. µSmart Sensor general description: click here.
µSmart sensors are intended
for permanent or semi-permanent installation, and connection to a data
logger or computer.
An LCD display box can be attached.
Monitor Sensors water quality sensors are provided with 5m cable.
Dissolved Oxygen
Dissolved Oxygen: Hanna Instruments
Some of these have automatic compensation for salinity and
altitude, data logging, or printing
Comparison Table and
data for Hanna DO Instruments: click here
HI 9142 Dissolved Oxygen Handheld Instrument with 4mm probe, cable & carry case $1052+GST 1/05
Electrical Conductivity
Temperature compensated, with Temperature
Sensor, Output in µS (microSiemens). Cable
5m
Maximum Depth : 30m, Supply Current : 1 to 2mA @ 5-28V Data:
click here (.pdf file, opens new window)
Extra cable:
3-core, or 4-core.
EC1: 0- 1000µS, EC2:
0- 2000µS, EC3: 0- 5000µS, EC4:
0- 10,000µS, EC5: 0- 20,000µS,
EC6: 0- 50,000µS, EC7: 0- 100,000µS
(seawater), EC8: 0- 200,000µS , EC9: 0- 500,000µS
(microSiemens)
EC-F EC Sensor Fertigaton Pack
Ion Selective Electrode: ISE1, with 1m cable
Hanna
Testers - handheld - Conductivity - pH - TDS - Temperature - Combination
- ORP - Other
Conductivity: HI 96303 96304 Primo 5 Primo 4 HI
98303 98304 98305 98306 98308 98309 981410
etc, etc.
Hanna
Conductivity / TDS Meters - portable & benchtop
Portable: HI
9930 99301 8033 8734 8633 8733 993310 9033 9034 9835 98360 933300 933301
Bench:
EC 214 215 215R 2300
Hanna
Wall Mount Indicators - see end
of this page
- Interchangable probes - Water-tight casings
- Manual or automatic calibration - pH TDS - Conductivity - Temperature - Combination
Hanna
Sensors & Probes - Quick response times - Measure air, solids and
semi-solids - Lightweight
- Conductivity Probes - Dissolved
Oxygen Probes - K Type & Thermocouple Probes - Pt100 Four-Wire Probes
- Relative Humidity Probes - Temperature Probes for ATC pH Meters - Thermistor
Probes & Sensors
Hanna
Calibration and Storage Solutions
It is difficult to exaggerate the
importance of buffer and maintenance solutions. Expensive equipment is often utilized
well below its full capabilities due to the lack of proper maintenance of the
sensors.
- pH 4.01 Buffer Solution - pH 6.86 Buffer Solution -
pH 7.01 Buffer Solution - pH 9.18 Buffer Solution - pH 10.01 Buffer Solution
- pH & ORP Buffer & Electrolyte Solutions - Sodium, Sodium Choride & Fluoride
Solutions - Cleaning, Storage ORP Pretreatment Solutions - Conductivity Solutions
- TDS & Salinity Solutions
Hanna HI 8936 Conductivity Transmitters
using 4-Ring Technology
Data:
click here
HI8936A $365.00
HI8936AL $550.00 1/05
HI8936B $365.00
HI8936BL $550.00
HI8936C $365.00
HI8936CL $550.00
HI8936D $365.00
HI8936DL $550.00
Hanna Instruments
conductivity transmitters use top of-the-line, 4-Ring Potentiometric probes.
As opposed to the more widely used 2-Ring Amperometric method, the 4-Ring Potentiometric
method provides the highest accuracy and repeatability attainable. When measuring
liquids that have a high conductivity, the 2-Ring system is susceptible to polarization.
This condition makes it exceptionally difficult to obtain measurements with any
accuracy. The polarization is directly related to the electrode's current load,
and will cause a considerable, non-linear drop in the voltage. As a result, the
solution around the electrode simulates a low conductivity condition.
4-Ring electrodes eliminate the polarization effect by splitting the four rings into 2 current electrodes and 2 voltage electrodes. When placed in a conductive liquid, the 2 current electrodes take the alternating voltage and create a current. This alternating current produces a Buffer Field from which polarization is absent. The voltage is then measured in this field assuring no altered readings.
Voltage electrodes carry very little current. This allows the electrodes to be arranged in a manner where the current electrodes, which are the most susceptible to polarization, are placed where they cannot effect the voltage electrodes. Consequently, the Buffer Field is large enough for the voltage electrodes to take accurate readings without being effected by polarization.
Hanna Instruments was the first instrumentation manufacturer to offer a 4-ring potentiometric probe with a conductivity meter. The potentiometric method of measuring electrical conductivity in liquids is by far the most accurate method available today. The four rings are aligned concentrically on the probe shaft. The two outer rings apply a voltage which creates a buffer field around the two inner rings. The inner rings pick up a current and measure the conductivity of the liquid inside the buffer field. This completely eliminates the polarization which occurs in the 2-ring amperometric method.
Without polarization, the probe can also measure a larger range of conductivity because it does not suffer from electrolysis. This 4-ring method is used in all of the following probes.
HI 3291 Detachable CONMET 1 ATC probe, length: 6.2"
(158 mm).
HI 3292 Detachable CONMET 2 ATC probe, length: 6.2" (158 mm).
HI 3295 Detachable CONMET 3 ATC probe, length: 6.2" (158 mm).
HI
76301W Detachable 4-ring ATC conductivity probe for HI 8033, HI 8633 & HI
8734 with 3.3' (1 m) cable.
HI 76302W Detachable 4-ring ATC conductivity
probe for HI 9033, HI 9034, HI 933300, HI 9130 with 3.3' (1 m) cable.
HI
76303 Detachable 4-ring platinum ATC conductivity probe for HI 933100 & HI
9635 with 3.3' (1 m) cable.
HI 7633W Detachable 4-ring ATC conductivity probe
for HI 8733 with 3.3' (1 m) cable.
HI 7685 Detachable 4-ring platinum ATC
conductivity probe for HI 8819 with 3.3' (1 m) cable.
HI 7686 Detachable
4-ring platinum ATC conductivity probe for HI 9032 with 3.3' (1 m) cable.
HI 7687 Detachable 4-ring platinum ATC conductivity probe for HI 8820 with 3.3'
(1 m) cable.
Water Temperature Sensors - TW1
A fully sealed and immersible sensor for water monitoring applications.
The sensor is mounted in a stainless steel body with copper heat sink to
monitor water temperature.
The TW1 is available in 2 sizes: length 257 mm/OD
37 mm, and length 220 mm/OD 32 mm.
Water
Temperature Sensor Data: click here
Turbidity Sensor
with or without motorised wiper with various ranges. NTU=Nephelometric
Turbidity Unit.
Has two parts: the Sensor unit, joined with
a short cable to the Electronics unit, which gives the µSmart
outputs
Both units are suspended in the water. The 2 small sensor
windows are off centre on the lower end of the cylindrical sensor housing.
A wiper is attached to a central rotor, which is preset to rotate once every hour
or two.
The wiper is used to clear algae, etc, from the sensor, and is recommended
when the sensor is immersed for more than a few days.
The wiper material can
be easily replaced.
The standard sensors are rated to 30m depth (optional
100m can be supplied).
Data
on NEP series: click here (.pdf file, opens new window)
NEP195/1 with motorised wiper: 0-100NTU, NEP195/2:
0-400NTU, NEP195/3: 0-1000NTU.
NEP190/1
without motorised wiper: 0-100NTU, NEP190/2: 0-400NTU, NEP190/3:
0-1000NTU
Cable joining the Sensor unit to the Electronics unit: NEP190-CBL
Connector for joining the above cable to the sensor: NEP190-CON
TT1 Turbidity Wiper Timer
The Electronics module is connected to the logger with normal 3-core cable
Current draw is approx 1mA average when economy mode is activated (unit is switched off between readings).
Turbidity - Hanna Turbidity Meters Comply with USEPA standards - Logging capability
Handheld Models : HI 93102 HI 93114 HI
93124 HI 93703
Bench Model : LP
2000
pH pH pH pH pH
Ranges:
PH3: 0-14 pH, with 1m cable, PH1:
4-10 pH, PH2: 2-12 pH
Length of sensor: 383mm incl hanging
loop at top, 32mm max dia
µSmart
pH Sensor data: click here For low cost
pH measurement see DrDaq
Hanna Portable, Bench & Application Specific pH meters: click hereIncludes: Bench:
HI 4211 4212 Application Specific: HI 99121 99131 99141 99161 99163 99171 99181 98401 931100 931101 Simulators / Calibrators: HI 8427 HI 931001 |
|
Data on Portable HI 8314 and HI 9025 (HI8314 or HI9025) (this site)
Hanna HI 8614 pH
Transmitters with 4-20mA isolated output
Data:
click here HI8614: $578+GST HI8614L:
$718+GST 1/05
Two-wire pH & ORP transmitters
Two-wire transmitters are widely used for process control in industry today. These instruments are particularly useful in industrial conditions where electrical interference is an important factor. By galvanically isolating the signals, any interference created is prevented from reaching the transmitter. One usually associates industrial environments with corrosive conditions, therefore any instrumentation used must be resistive to liquids and corrosion. Hanna transmitters meet all of these criteria and they only use two wires which reduces costs and eliminates the need for expensive coaxial cable. Two-wire transmitters are ideal when used in remote applications that do not have AC power available.
As technology advances it is becoming more important to monitor certain processes closely, particularly from remote locations. Computers are commonly used to receive signals from transducers that have travelled a great distance (up to 1000', [300 meters]). When transmitting signals over such a distance, it is likely that a substantial portion of the signal will be absorbed by the resistance of the lines. Considerable differences in ground potentials and between the signal source and load, are inherent to long lines.
Powering the system with an AC supply is beneficial in eliminating this problem. One of the two wires is power ground return, while the other is the power supply. The power supply line acts in a dual manner, as a power supply, and as a signal carrier. This allows the transmitter to operate with 2 wires.
The signal current from the process controller is normally 4 to 20mA. When the load is connected with the power supply return line, the signal current will be proportional in the range of 4 to 20 mA.
The ability to use a thinner gauge of wire greatly reduces the costs associated with the wiring of remote transmitters. Typically, a heavy gauge of shielded cable is required in order to minimize the ambient electrical noise from AC power sources, interference from electrical equipment or various other sources of noise.
Thin wire will also provide better operation when the transmitter current output is a 4 to 20 mA signal. All of these features and many more, give Hanna Instruments transmitters the versatility to be used over long distances in almost any process control application.
Hanna
HI 98143 pH & Conductivity Transmitter with 4-20mA isolated output
Data:
click here
HI98143-01 $706.00
HI98143-04 $706.00 1/05
HI98143-20 $706.00
HI98143-22 $706.00
Testo portable or hand-held water quality instruments (pH, temp., conductivity): click here
ISE Ion Selective Electrodes
ISE1
Ion Selective Electrode, with 1mtr cable (Call for application)
e.g. NH4,
NO3, Bromide, etc
Redox/ORP
RO1, with 1m cable Dim: 389mm long, including hanging
loop, 32mm diameter.
Oxidation-Reduction Potential, range
±750mV. Need over +600mV to kill bacteria.
Oxidation is a process in which a molecule or ion loses electrons.
Oxidation is always coupled with reduction, as another molecule or ion picks up
the electron.
The oxidizing agent gains the electrons.
Data: please request 02 9481 7420
Hanna HI 8615 ORP Transmitters with 4-20mA Isolated Output
Data: click here HI8615 $578.00 HI8615L 718.00 1/05
Water Flow Data on Water Flow Sensors: click here
FL1: Flow Sensor, propellor
type, µSmart
FL2: Flow Sensor, impeller type (surface flow, paddle wheel, only partly submerged), µSmart
Water Level Sensors
WL1: 0-1m, WL2: 0-5m, WL3:
0-10m, WL4: 0-20m, WL5: 0-50m, Price includes
5m cable.
Data: click here (.pdf
file, opens new window) More
info not on data sheet: click here.
Price includes 5m cable. Specify
cable required at time of ordering.
You need enough 8 core vented cable on
the sensors to bring the cable above the highest water level. It is terminated
in a vent housing.
The vent housing is part of the overall price of the unit.
The rest of the distance to the logger is run in three core cable.
Hanna Water Level Controllers
HI 7871 & HI 7873 Mini Level Controllers
Data:
click here HI7871/220 $177.00 HI7873/220
$200.00 1/05
Light level under water
the Solar Radiation Sensor can be modified for underwater use. Please enquire.
Wall
Mount Indicators - Hanna