Need assistance? Call us: 1-800-663-4209
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
$
671.76
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
- Series ID OM-THA2-U-Alarm
- 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
Supported Applications
The Omega OM-THA2-U is a multi-function unit that monitors temperature, relative humidity, and dew point. It records data and generates an alarm for any out-of-range conditions. Documented applications include supermarkets, food markets, convenience stores, restaurants, florists, greenhouses, laboratories, pharmaceutical storage facilities, refrigerated transport, cold chain facilities, and computer rooms.
Operating Conditions & Performance
The sensor probe operates within a temperature range of -40 to 60°C (-40 to 140°F) and an operating humidity range of 0 to 90% RH non-condensing. The base unit has an operating temperature range of 0 to 54°C (32 to 132°F) and a storage temperature range of -18 to 54°C (0 to 130°F). Performance specifications include ±1°C (±2°F) accuracy for temperature with 0.1°C (0.1°F) resolution, and ±2% RH accuracy for humidity with 0.1% RH resolution.
The unit features a user-selectable sample rate from 1 sec to 30 min. Memory capacity is rated at 8150 samples for temperature, humidity, and dew point, supporting data history storage of 2 hrs to 170 days depending on the sample rate. The system includes a battery backup using a 9V alkaline battery providing 25 hrs operation during power outage.
Alarm & Relay Specifications
- Alarms: High/low temperature and humidity alarms, condensation alarm with audible/visual indication.
- Relay Output: 5A/250V NO/NC dry contact for resistive load.
- Alarm Delay: Up to 2 hrs, user-selectable.
Power & Connectivity
- Power Supply: 12 to 24 Vac/Vdc (0.78W alarm active).
- Interface: USB connection with free Windows software compatible with XP, Vista, 7, 8/10 (32-bit and 64-bit).
Configuration Options
The series consists of a base unit with an easy-to-read display and a remote sensor probe. The standard configuration includes a cable length of 4.6 m (15'). The sensor probe dimensions are 9.65 L x 2.79 cm dia (3.8 x 1.1") with a weight of 25 g (0.9 oz). The base unit measures 14 L x 11.4 W x 4.1 cm dia (5.5 x 4.5 x 1.6").
Configuration options and accessories include:
- NIST Calibration Certificate: Available as an optional add-on.
- Replacement Parts: Remote sensor probe (OM-THA2P), 115 Vac power adaptor (OM-THA2-ADAP), and 220 Vac power adaptor (OM-THA2-ADAP-220V).
- Warranty: OMEGACARE extended warranty program available.
The unit supports user calibration for temperature and relative humidity. It comes complete with a user guide, Windows software on CD, USB interface cable, and 115 Vac power adaptor.
Key Product Differences
The series offers specific model variations based on included documentation or accessories:
- OM-THA2-U: Standard temperature/humidity alarm unit.
- OM-THA2-U-CAL-3-HU: Temperature/humidity alarm with NIST calibration certificate.
PDFs & Manuals
Show Ratings & Reviews
Rated 3 out of
5
by
Edward 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
My company doesn't have access to a PC with a CD drive. Can I install the provided software online instead?
Thank you for your question. We will require more information to help on this question, please email the DAS team at DAS@OMEGA.COM
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
Thank you for your question. Unfortunately, you have to use the provided software, there is no custom programming language support available.
Date published: 2021-07-01