Single-Channel Ambient Temperature Datalogger

  • Single Channel
  • Monitor temperature, current, voltage, or process signals
  • 10-year battery life
  • Flashing visual alarm
  • Memory Capacity of 32,767 readings
  • Optical data  transfer
  • Fast sample capability
  • Compact and small, monitor temperature anywhere
  • Water-resistant version available

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ACR OWL 100 Shown

Product Information

Datasheet 78 KB
Memory Size

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The OWL 100 data logger records temperature in environments that typical data loggers cannot withstand. This model is also available in a water-resistant polyurethane enclosure (OWL-100 POLY) so it can be used in hostile environments where vibration or excess moisture is present.
Owl 100 Specifications
Specifications Descriptions
No. of Channels

One Current Channel to be used with OWL A60FL, OWL A65FL, OWL A70FL, OWL A75FL

Clock Accuracy +/- 2 seconds per day
Thermistor Type NTC Thermistor (10k ohms @ 25°C)
Range -40 to 70°C ( -40 to 158°F)
Total Accuracy +/- 0.5°C @ 25°C ( 0.9°F @ 77°F)
Memory Size 32 KB (32,767 readings)
Resolution 8-bit (1 part in 256)
Standard Resolution 0.5°C @ 25°C ( 0.9°F @ 77°F); better than 1°C (1.8°F) between -25 to 70°C (-13 and 158°F); better than 2.0°C (3.6°F) between -40 and 25°C(-40 and -13°F)
Can be increased by using narrow range feature
Sampling Methods 1. Continuous (First-in, First-out)
2. Stop when full (Fill then stop)
Rates User selectable rates from 5 per second to once every 12 hours
Communication Removable snap type connector
External Connector Removable snap type connector
Battery 3.6 volt Lithium
Battery Life 10 Years under normal use
General Specifications Size 60 mm x 48 mm x 19 mm (2.4" x 1.9" x 0.7")
Case Material OWL-100-POLY Polyurethane
OWL-100-Plastic Noryl plastic
Water Resistant OWL-100-POLY Yes
OWL-100-Plastic No
Submerging Rating for OWL-100 Poly IP67 - 1m depth (3.28ft) in fresh water for 30 minutes
Mounting Magnetic backing and locking eyelet
TrendReader2 Software Processor Pentium II-350MHz or Faster
Operating System Windows 2000 SP4, XP SP2
Available Hard drive space At Least 250 MB of Hard disk space
Memory 128 mb of Ram (256 MB Recommended)
Communication Ports USB or Serial Port, dependant on interface cable
Internet Browser Internet Explorer 6 or higher
Screen resolution 1024 x 768 or higher
Additional Equipment Mouse or other pointing device
More info More info on the TrendReader Standard 2>>
Processor/Operating System IBM PC or 100% compatible running Windows 3.1, '95, '98, 2000, ME, NET, XP
Available Hard drive space At Least 2MB
Memory At Least 2MB
Communication Ports 1 Free Serial Port
Ordering Information
ACR TrendReader 2 Software  required
Model Description Buy Online Price
MFR ID: 01-0050
ACR Systems OWL-100-POLY Owl 100 - Temperature - Water Resistant Single channel, 8 bit, 32 KB data logger (One ambient temperature channel - water resistant enclosure). (Catalog# 01-0050)  Buy Now $470.00
MFR ID: 01-0250
ACR Systems OWL-100-PLASTIC Owl 100 - Temperature Single channel, 8 bit, 32 KB data logger (One ambient temperature channel). (Catalog# 01-0250)  Buy Now $360.00
MFR ID: 01-0228
ACR Systems TRS2-FULL INSTALL TrendReader 2 Full Install CD. (Latest version) Buy Now $109.00
TRS2UPGRADE  ACR Systems TRS2-UPGRADE TrendReader 2 Upgrade CD. (Requires a previous version of TrendReader Standard.) Discontinued
MFR ID: 01-0227
ACR Systems TRS2-W/LIC-101 TrendReader 2 Interface Pkg LIC-101 Software CD, Interface cable, 9-25 pin serial adaptor Discontinued
MFR ID: 01-0230 
ACR Systems TRS2-W/LIC-102 TrendReader 2 Interface Pkg LIC-102, Software on CD, USB for OWL data loggers. (cat. 01-0230)  Buy Now $189.00
Included Accessories
  • 1 - Users guide
Optional Accessories
Model Description Buy Online Price
18-0010 ACR Systems 9-25-ADP Converts 25 pin serial port to a 9 pin port. For use with ACR interface cables Discontinued
MFR ID: 01-0023
ACR Systems LIC-101 Lite-Link Logger-PC 9-pin PC serial port to logger interface cable Buy Now $99.00
MFR ID: 01-0232 
ACR Systems LIC-102 Interface Cable, LiteLink, USB Computer to Optical Data Logger . Compatible with Owl and PowerWatch loggers. (cat. 01-0232) Buy Now $99.00
SC100 ACR Systems SC-100 General Purpose Briefcase style, locking, customizable logger & accessory storage case Buy Now $119.00
USB100ACR ACR Systems USB-100 USB-Serial Port Cable Converts a USB port to a 9 pin serial port Discontinued
MFR ID: 01-0057
Size: 127 x 127 x 76mm . Buy Now $110.00
ACR Systems WB-100 NEMA 4X clear-faced weatherproof box for all ACR loggers
WBC100 ACR Systems WBC-100 Weatherproof Box Self-Sealing Connectors Additional self-sealing connectors for the Weatherproof Logger Box. (Catalog# 21-0003) Discontinued