OM-THA2-U

The OM-THA2-U is a multi-function unit that monitorstemperature, relative humidity and dew point. TheOM-THA2-U records data and generates an alarm forany out-of-range conditions. It consists of a base unitwith an easy-to-read display and a 4.6 m (15') remotesensor probe.

The alarm function monitors temperature, relativehumidity and dew point once every second. If any of thereadings reach an alarm threshold, the unit generatesan alarm by turning on a beeper and a dry relay contact.The relay can be connected to a telephone dialer, light orbell. The delayed alarm feature can reduce false alarmsby ignoring short duration alarm conditions. The unit willalso generate an alarm on probe failure.

The logger function records the data into an internalnon-volatile memory at a user specified interval. Therecording is performed continuously after the unit isturned on. No computer set-up is necessary to startlogging, and all logging settings can be viewed orchanged through the front panel functions. When theinternal memory becomes full the recording rolls over,overwriting the oldest recorded data. Review logged dataon a computer using the included Windows softwarewhile continuously recording new data.

All the operating settings of the OM-THA2-U can bechanged from the front panel without the need for acomputer. The two-line display provides an easy-to-readmeans of viewing or changing settings.

Specifications
Sensor Probe
Operating Temperature Range: -40 to 60°C (-40 to 140°F)
Operating Humidity Range: 0 to 90% RH non-condensing
Temperature Accuracy: ±1°C (±2°F)
Temperature Resolution: 0.1°C (0.1°F)
Humidity Accuracy: ±2% RH
Humidity Resolution: 0.1% RH
Dimensions: 9.65 L x 2.79 cm dia (3.8 x 1.1")
Weight: 25 g (0.9 oz)
Cable Length: 4.6 m (15')
Base Unit
Operating Temperature Range: 0 to 54°C (32 to 132°F)
Storage Temperature: -18 to 54°C (0 to 130°F)
Operating Humidity: 0 to 90% RH, non-condensing
Power: 12 to 24 Vac/Vdc, 0.78W alarm active
Battery Backup: 9V alkaline battery for 25 hrs operation during power outage
Relay: 5A/250V NO/NC dry contact, resistive load
Dimensions: 14 L x 11.4 W x 4.1 cm dia (5.5 x 4.5 x 1.6")
Weight: 245 g (8.6 oz)
Alarm
Temperature/Relative Humidity Alarm: High/lowtemperature and humidity alarms, condensation alarm
Alarm Delay: Up to 2 hrs, user-selectable
Alarm Indication: Audible/visual/relay
Logging
Sample Rate: 1 sec to 30 min, user-selectable
Data History Storage: 2 hrs to 170 days, depending on sample rate
Memory Capacity: 8150 samples for temperature, humidity and dew point
Software Compatibility: Windows XP/Vista/7/8/10 (32-bit and 64-bit)

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