Temperature Humidity Alarm with Logging Capability - Discontinued
Temperature Humidity Alarm with Logging Capability
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Audible and Visual Alarm
Log Up To 170 Days of Data
Relay Contacts For Remote Alarm or Auto Dialer
The OM-THA2 has been discontinued. Please see the OM-THA2-U as a possible alternative or contact our Data Acquisition Engineering department.
The OM-THA2 is a multi-function unit that monitors temperature,
relative humidity and dew point, provides for out-of-range conditions
and continuously logs data. It consists of a base unit with an easy
to read display and a 4.6 m (15') remote sensor probe.
The alarm function monitors temperature, relative humidity
and dew point once every second. If any of the readings reach an
alarm threshold, the unit generates an alarm by turning on a beeper
and a dry relay contact. The relay can be connected to a telephone
dialer, light or bell. The delayed alarm feature can reduce false
alarms by ignoring short duration alarm conditions. The unit will also
generate an alarm on probe failure.
The logger function records the temperature, relative humidity and dew point into internal non-volatile
memory at a user specified interval. The recording is performed
continuously after the unit is turned on. No computer setup is necessary
to start logging, and all logging settings can be viewed or changed
through the front panel functions. When the internal memory becomes
full the recording rolls over, overwriting the oldest recorded data.
Logged data can be reviewed on a computer using the included
Windows software while continuously recording new data.
All the operating settings of the OM-THA2 can be changed from
the front panel, without the need for a computer. The two line display
provides and easy to read means of viewing or changing settings.
SENSOR PROBE Operating Temperature Range: -40 to 140°F (-40 to 60°C) Operating Humidity Range: 0 to 95 %RH non-condensing Temperature Accuracy: ±2°F (±1°C) Temperature Resolution: 0.1°F (0.1°C) Humidity Sensor: Polymer capacitive Humidity Accuracy: ±2%RH Humidity Resolution: 0.1%RH Temerature Sensor: Solid state Calibration: User calibration for temperature
and relative humidity Dimensions:
9.65 cm L x 2.79 cm dia (3.8 L x 1.1 dia) Weight: 25 g (0.9 oz) Cable Length: 4.6 m (15')
BASE UNIT Operating Temperature Range: 32 to 132°F (0 to 54°C) Storage Temperature: 0 to 130°F (-18 to 54°C) Operating Humidity: 0 to 95% RH non-condensing Power: 12 to 24 Vac/Vdc, 0.78W alarm active Battery Backup: 9V alkaline battery for 35 hrs operation during
power outage Relay: 5A/250V NO/NC
14 cm L x 11.4 cm H x 4.1” D
(5.5 L x 4.5 H x 1.6 D) Weight: 245 g (8.6 oz)
ALARM Temperature/Relative Humidity Alarm: High/low temperature
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 for temperature, humidity and dew point
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