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OM-THA2-U-Alarm

Temperature Humidity Alarm with Logging Capability

  • Audible and Visual Alarm
  • Digital Display Log Up to 170 Days of Data
  • Relay Contacts for Remote Alarm or Auto Dialer
  • Remote Sensor with USB Connection
OM-THA2-U-Alarm
From $ 572.28
Temperature Humidity Alarm with Logging Capability OM-THA2-U-Alarm OM-THA2-U-Alarm
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Product Overview
  • Additional Features 1 External Probe
  • Alarm Audible/visual/relay
  • Alarm Delay Up to 2 hrs, user-selectable
  • Base Unit Operating Humidity 0 to 90% RH
  • Battery life 25 hr
  • Battery Size and Type Alkaline 9V
  • Cable Length 4.6 m
  • Calibration User calibration for temperature and relative humidity
  • Data Interface USB
  • Display Type LCD
  • Height 11.4 cm
  • Length 14 cm
  • Measurement Type Relative Humidity, Temperature
  • Memory 8150
  • Memory Note 8150 samples for temperature, humidity and dew point
  • Number of Measurements 2
  • Operating Humidity 0 to 90% RH
  • Operating Temperature, Max 54 °C
  • Operating Temperature, Min 0 °C
  • Probe Diameter 2.79 cm
  • Probe Length 9.65 cm
  • Process Temperature, Max 60 °C
  • Process Temperature, Min -40 °C
  • Relative Humidity Accuracy ± 2% RH
  • Relay Output 5 A @ 250 Vac
  • Sampling Rate 1 Hz (1 update/second)
  • Sampling Rate Note 1 sec to 30 min, user-selectable
  • Sensor Probe Humidity Resolution 0.1 °C
  • Sensor Probe Temperature Resolution 0.1 °C
  • Sensor Probe Weight 25 g
  • Software Compatibility Windows XP/Vista/7/8/10 (32-bit and 64-bit)
  • Storage Temperature, Max 54 °C
  • Storage Temperature, Min -18 °C
  • Supply Power Type Battery
  • Temperature Accuracy ± 1 °C
  • Weight 245 g
  • Width 4.1 cm
The OM-THA2-U is a multi-function unit that monitors temperature, relative humidity and dew point. The OM-THA2-U records data and generates an alarm for any out-of-range conditions. 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 data into an internal non-volatile memory at a user specified interval. The recording is performed continuously after the unit is turned on. No computer set-up 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. Review logged data on a computer using the included Windows software while continuously recording new data.

All the operating settings of the OM-THA2-U can be changed from the front panel without the need for a computer. The two-line display provides an easy-to-read means of viewing or changing settings.
Rated 3 out of 5 by from Needs to be calibrated... Sent out for calibration to a third party because Omega E does not provide cal services for this particular unit. The unit was found out of +/-2% range. At 53.0 %RH read 49.1%RH. At 75.0 %RH read 70%RH.
Date published: 2018-11-29
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My company doesn't have access to a PC with a CD drive. Can I install the provided software online instead?

Asked by: C3PO
Thank you for your question. We will require more information to help on this question, please email the DAS team at DAS@OMEGA.COM
Answered by: Application Engineer PV
Date published: 2023-09-26

Is there a way to communicate with this device in c# or do you have to use your datalogging software to log device data

Asked by: Sparkthrower
Thank you for your question. Unfortunately, you have to use the provided software, there is no custom programming language support available.
Answered by: Application Engineer PV
Date published: 2021-07-01
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