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ACR OWL Process Signal Data Loggers

ACR OWL 400/500 – 1-channel Voltage / Current input

ACR OWL Process Signal (DC Voltage / 4-20mA) Data Loggers

1 channel, 8-bit data loggers – DC Current 0-24mA max, or DC Voltage 0-38.4V DC max

The OWL series of data loggers are Single-Channel, configurable 8-bit data loggers featuring 10-year battery life, memory capacity of 32,767 readings, optical data transfer, and flashing visual alarm.

The OWL-500 logger with its 0-24mA input, is perfect for measuring the output from any industry standard 4–20mA sensor, such as flow rate, pressure, tank level, or even temperature or humidity transmitters.

The OWL-400 logger with its 0-38.4V DC input, can connect to a variety of sensors with voltage outputs (eg. 0-1V or 0-10V outputs), or can also be used to directly monitor DC voltages of battery or small solar systems.

Common Specs:

Size: 60 mm x 48 mm x 19 mm,
Weight: 54g
Operating Limits: -40C to 70C,
Memory Size: 32,767 readings, User selectable sampling rates from 5 per second to once every 12 hours, 32K readings, 8-bit (1 part in 256), Can be optimized to the equivalent of 10 bit resolution.
Alarm Type: Red LED alarm,
Connector: Removable snap type connector.

FAQ on OWL Loggers

Also required: TrendReader Software and USB light wand cable: see below

Note: The Trendreader Software is the same for Owl and SmartReaderPlus loggers, however the included communications cables are specific to the logger series.

ACR OWL DC Voltage and Current Data Loggers

OWL 400 Single-channel DC Voltage Data Logger


The OWL 400 data logger is a rugged and versatile data logger that records DC voltages up to 38.4V with ease and convenience. This logger is ideal for monitoring (through commercially available sensors) a wide variety of measurement parameters.
OWL 400
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OWL 400 The OWL 400 data logger is a rugged and versatile data logger that records DC voltage with ease and convenience. This logger is ideal for monitoring (through commercially available transducers) a wide variety of measurement parameters. All voltage signals can be converted into custom engineering units using the simple equation editor in ACR’s TrendReader software.

OWL Series consists of configurable, single-channel data loggers with flashing visual alarms, optical data transfer, and an industry-leading 10-year battery life.

Key Features

  • One channel to record DC voltage
  • 32KB memory for almost 33,000 readings
  • Configurable alarm thresholds and modes with super-bright red blinking annunciator
  • Conformal coating protects electronics from harsh environments
  • Industry-leading 10-year battery life
  • 3-year warranty

Specifications:

Size60 x 48 x 19 mm (2.4 x 1.9 x 0.7 in)
Weight54 g / 1.9 oz (All models except OWL 100-Poly) 80 g / 2.8 oz (OWL 100-Poly water-resistant model)
Case MaterialNoryl® plastic (All models except OWL 100-Poly) Polyurethane (OWL 100-Poly water-resistant model)
Operating Limits-40 to 70°C (-40 to 158°F) and 0 to 95% RH (non-condensing) except OWL 100-Poly
Clock Accuracy+/- 2 seconds per day
Battery3.6 volt Lithium
Memory Size32 KB (32,767 readings)
Sampling MethodContinuous (First-in, First-out)*, Stop When Full (Fill-then-stop) *Not available for sample rates faster than 8 seconds
Sampling RateUser selectable rates from 5 per second to once every 12 hours
Resolution8-bit (1 part in 256)
CommunicationOptical data transfer; data can be transmitted through glass or transparent medium up to 25 mm (1in)
Alarm TypeFlashes red LED once every 8 seconds
PC RequirementsWindows PC with a least 256MB RAM, 250MB of hard drive space and one free serial or USB port
Software RequirementsTrendReader® (compatible with Windows 7, Windows 8 & Windows 10t)
Memory Size32 KB
Input Range0 to 38.4 Volts DC (32 software selectable ranges available)
Accuracy+/- 1% of full scale
Input ImpedanceGreater than 100 K ohms

Data on OWL 400 (pdf, opens in a new tab)

OWL400 single channel dc voltage logger: $425+GST   (03/19)

Also required: TrendReader Software Kit for Windows with LIC-102 LightWand USB Cable, see below

OWL 500 Single-channel DC Current Data Logger


The OWL 500 data logger is a rugged and versatile data logger that records the popular 4-20mA process signal with ease and convenience. This logger is ideal for monitoring (through commercially available transducers) a wide variety of measurement parameters.
OWL 500
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OWL 500

The OWL 500 data logger is a rugged and versatile data logger that records the popular 4-20mA process signal with ease and convenience. This logger is ideal for monitoring (through commercially available transducers) a wide variety of measurement parameters. All DC current process signals can be converted into custom engineering units using the simple equation editor of ACR’s TrendReader software.

Our OWL Series consists of configurable, single-channel data loggers with flashing visual alarms, optical data transfer, and an industry-leading 10-year battery life.

Key Features

  • One channel to record process current
  • 32KB memory for almost 33,000 readings
  • Configurable alarm thresholds and modes with super-bright red blinking annunciator
  • Conformal coating protects electronics from harsh environments
  • Industry-leading 10-year battery life
  • 3-year warranty

Specifications:

Size60 x 48 x 19 mm (2.4 x 1.9 x 0.7 in)
Weight54 g / 1.9 oz (All models except OWL 100-Poly)
80 g / 2.8 oz (OWL 100-Poly water-resistant model)
Case MaterialNoryl® plastic (All models except OWL 100-Poly)
Polyurethane (OWL 100-Poly water-resistant model)
Operating Limits-40 to 70°C (-40 to 158°F) and 0 to 95% RH (non-condensing) except OWL 100-Poly
Clock Accuracy+/- 2 seconds per day
Battery3.6 volt Lithium
Memory Size32 KB (32,767 readings)
Sampling MethodContinuous (First-in, First-out)*, Stop When Full (Fill-then-stop)
*Not available for sample rates faster than 8 seconds
Sampling RateUser selectable rates from 5 per second to once every 12 hours
Resolution8-bit (1 part in 256)
CommunicationOptical data transfer; data can be transmitted through glass or transparent medium up to 25 mm (1in)
Alarm TypeFlashes red LED once every 8 seconds
PC RequirementsWindows PC with a least 256MB RAM, 250MB of hard drive space and one free serial or USB port
Software RequirementsTrendReader® (compatible with Windows 7, Windows 8 & Windows 10t)
Memory Size32 KB
Input Range0 to 24 mA DC
Accuracy+/- 1% of full scale
Input Impedance100 ohms

Data on OWL 500 (pdf, opens in a new tab)

OWL500 Single Channel 0-24mA DC Current logger: $425+GST   (03/19)

Also required: TrendReader Software Kit for Windows with LIC-102 LightWand USB Cable, see below

Software: TrendReader for Windows

TrendReader

TrendReader® 3 is a powerful, versatile and easy-to-use software application for all versions of windows, designed exclusively for ACR’s SmartReader Plus, SmartReader, IAQ, OWL, TRH, JR and Nautilus data loggers.

Powerful features and easy setup enables collected data to be thoroughly analyzed in seconds.

TrendReader Software details includes download trial (ACR site, opens in new tab)

Data Sheet on TrendReader 2 Rev 6, 7/11/2012 (pdf, opens in a new tab)

Data collected in ACR Data Loggers is downloaded using the USB port of a computer with the bundled Light Wand cable.

TrendReader Software features:

  • Simple logger setup window
  • Compound multiple graphs to a resultant graph
  • Export data to most spreadsheet formats
  • Interface with remote loggers via modem
  • Multi-graph display
  • Zoom
  • Scale units
  • Add comments
  • Data table view

Updates: TrendReader update is available free of charge to existing users at the ACR website – downloads.

TR3-LIC102 TrendReader3 software package incl. LIC-102 USB LightWand interface cable: $295+GST  (03/19)

FAQ on OWL Loggers

What is the resolution of OWL loggers?

8 bit (1 part in 256) however, it can be optimized to the equivalent of 10 bit resolution.

How does an OWL logger connect to the computer?

It uses either the LIC-101 serial or LIC-102 USB interface cable (Light Wand) for connection to the computer.

Does the interface cable (Light Wand) come with the OWL?

No, it comes with the software. That is, when you order the software you will receive the interface cable (Light Wand) as well. However, you can also order it separately, if you would like an extra cable.

How does the Light Wand work?

It uses optical communication. You place the Light Wand in front of the optical eye of the logger and the communication starts automatically.

Does the OWL support remote communication?

No. You cannot download data from an OWL logger using modem or telephone lines.

Is the OWL-100 water-resistant?

Yes, the OWL –100 Polyurethane model is water-resistant. It has an IP67 rating (Part number: 01-0050 OWL-100-Poly). Note that the other OWL-100 logger has a plastic case (Part number: 01-0250 OWL-100-Plastic) and is not water-resistant.

What are the fastest and slowest sample rates for OWL loggers?

The fastest sample rate is one sample every 0.2 seconds and the slowest sample rate is one sample every 12 hours.

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