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OMEGA EWS-TX Indoor Wall-Mount Temperature and Humidity Transmitter - Indoor Wall-Mount Transmitters
OMEGAIndoor Wall-Mount Transmitters

OMEGA EWS-TX Indoor Wall-Mount Temperature and Humidity Transmitter

The OMEGA EWS-TX is an indoor wall-mount temperature and humidity transmitter with a 4 to 20mA/1 to 5V DC output. It uses a thin-film polymer capacitor sensing element and has no display. Humidity accuracy is ±3% RH…

SKU 3G-OTH-179247

Also listed as: EWSTX · EWS TX

Brand
OMEGA
Item
EWS-TX Indoor Wall-Mount Temperature and Humidity Transmitter
Category
Indoor Wall-Mount Transmitters
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

OMEGA
Manufacturer Part Number
EWS-TX
Type
Thin-Film Polymer Capacitor, EWS
Output
4 to 20mA/1 to 5V DC
Display Type
No Display
Humidity Accuracy
20 to 80% of ±3% RH
Temperature Range
-15 °C to 77 °F
Sensing Element Type
Thin-Film Polymer Capacitor
Temperature Accuracy
80 to 95% of ±4% RH

Technical Documents

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OMEGA Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OMEGA EWS-TX is an indoor wall-mount temperature and humidity transmitter with a 4 to 20mA/1 to 5V DC output. It uses a thin-film polymer capacitor sensing element and has no display. Humidity accuracy is ±3% RH from 20 to 80% RH and ±4% RH from 5 to 20% and 80 to 95% RH; temperature accuracy is ±4% RH from 80 to 95% RH. The temperature range is -15 °C to 77 °F.

Frequently Asked Questions

What is the OMEGA EWS-TX temperature and humidity transmitter used for?

The OMEGA EWS-TX is an indoor wall-mount transmitter used for monitoring temperature and humidity in HVAC, clean rooms, and environmental control applications. It provides a 4 to 20mA/1 to 5V DC output for integration with building management systems.

What are the specifications of the OMEGA EWS-TX transmitter?

The OMEGA EWS-TX uses a thin-film polymer capacitor sensing element with no display. Humidity accuracy is ±3% RH from 20 to 80% RH and ±4% RH from 5 to 20% and 80 to 95% RH. Temperature range is -15 °C to 77 °F. Output is 4 to 20mA/1 to 5V DC.

Where to buy the OMEGA EWS-TX worldwide?

You can source the OMEGA EWS-TX through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

How to install the OMEGA EWS-TX wall-mount transmitter?

Mount the OMEGA EWS-TX on an interior wall away from direct sunlight, drafts, and heat sources. Connect the 4 to 20mA/1 to 5V DC output to your controller per the wiring diagram. Ensure the sensing element is unobstructed for accurate readings.

Used in

Common applications for OMEGA
Process control — OMEGA PR-22-3-100-A-1/8-0600-M12 RTD probes for temperature monitoring in chemical reactors
HVAC systems — OMEGA DP32PT digital panel meters for displaying temperature and pressure in building management
Gas appliance testing — OMEGA 5SC-TT-K-36-36 Type K thermocouples for measuring flue gas temperatures
Surface temperature measurement — OMEGA SA1-RTD-120 surface RTDs for monitoring pipe or vessel walls
Laboratory instrumentation — OMEGA NHX-K-M thermocouple plugs for connecting sensors to data loggers
Energy management — OMEGA M12TXSS-PT100-13MM-1/8NPT transmitters for boiler temperature feedback

OMEGA Products

3G Electric supplies OMEGA indoor wall-mount transmitters. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
This indoor wall-mount transmitter measures temperature and humidity, providing a 4 to 20mA output for integration with building management systems. It covers a temperature range of -22 to 167°F with ±1.25°C accuracy and humidity accuracy of ±2.5% from 20 to 80% RH. The unit features screw terminals and no display, suitable for HVAC, clean rooms, and environmental chambers
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This indoor wall-mount transmitter measures temperature and humidity, providing a 4 to 20mA output for integration with building management systems. It covers a temperature range of -22 to 167°F with ±1.25°C accuracy and humidity accuracy of ±2.5% from 20 to 80% RH. The unit features screw terminals and no display, suitable for HVAC, clean rooms, and environmental chambers
Indoor wall-mount transmitter with thin-film polymer capacitor sensing element. Outputs 4 to 20 mA or 1 to 5 V DC via screw terminals. Humidity accuracy ±3% RH from 20 to 80% RH; temperature accuracy ±4% RH from 5 to 20% RH. Operating temperature range -15 °C to 77 °F. No display. Suitable for HVAC, clean rooms, and environmental monitoring
OMEGA RTD
Indoor wall-mount transmitter with thin-film polymer capacitor sensing element. Outputs 4 to 20 mA or 1 to 5 V DC via screw terminals. Humidity accuracy ±3% RH from 20 to 80% RH; temperature accuracy ±4% RH from 5 to 20% RH. Operating temperature range -15 °C to 77 °F. No display. Suitable for HVAC, clean rooms, and environmental monitoring
The OMEGA HX303AC is a standard temperature and humidity transmitter from the HX300A series. It features a 2.75-inch probe with an IEC 751 sensing element and operates on a 4 to 20 mA loop. The transmitter measures temperature from 0°C to 50°C with ±0.3°C accuracy and humidity with ±2.5% RH accuracy. Typical applications include monitoring and control in HVAC systems, clean rooms, and environmental chambers
OMEGA
The OMEGA HX303AC is a standard temperature and humidity transmitter from the HX300A series. It features a 2.75-inch probe with an IEC 751 sensing element and operates on a 4 to 20 mA loop. The transmitter measures temperature from 0°C to 50°C with ±0.3°C accuracy and humidity with ±2.5% RH accuracy. Typical applications include monitoring and control in HVAC systems, clean rooms, and environmental chambers
The OMEGA TX13 is a head-mount temperature transmitter from the TX series. It operates on a 4 to 20mA loop and measures temperatures from -40°C to 85°C with an accuracy of ±0.5°C. Typical applications include industrial temperature monitoring in HVAC, process control, and environmental chambers
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The OMEGA TX13 is a head-mount temperature transmitter from the TX series. It operates on a 4 to 20mA loop and measures temperatures from -40°C to 85°C with an accuracy of ±0.5°C. Typical applications include industrial temperature monitoring in HVAC, process control, and environmental chambers
The OMEGA HX94C is a standard temperature transmitter from the HX94 series, featuring a 254 mm probe and a temperature range of -20 °C to 85 °C with an accuracy of ±0.6°C. It requires a 4 to 20 mA power supply. This transmitter is suitable for temperature monitoring in HVAC, clean rooms, and environmental chambers
OMEGA
The OMEGA HX94C is a standard temperature transmitter from the HX94 series, featuring a 254 mm probe and a temperature range of -20 °C to 85 °C with an accuracy of ±0.6°C. It requires a 4 to 20 mA power supply. This transmitter is suitable for temperature monitoring in HVAC, clean rooms, and environmental chambers
The OMEGA HX200HD is a standard temperature transmitter with a 10.16 cm probe and 1/2 in NPT connection. It operates from 0°C to 200°C with an accuracy of ±3.0°C and requires a 4 to 20 mA power supply. This device is used for temperature measurement in industrial process control and environmental monitoring applications
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The OMEGA HX200HD is a standard temperature transmitter with a 10.16 cm probe and 1/2 in NPT connection. It operates from 0°C to 200°C with an accuracy of ±3.0°C and requires a 4 to 20 mA power supply. This device is used for temperature measurement in industrial process control and environmental monitoring applications

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This indoor wall-mount transmitter measures temperature from -22°F to 167°F with ±4% accuracy and relative humidity from 0 to 100% RH, achieving ±2.5% accuracy from 20 to 80% RH. It provides a 4 to 20mA output via screw terminals and has no display. Typical applications include building automation, HVAC control, and environmental monitoring in commercial or industrial facilities
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This indoor wall-mount transmitter measures temperature from -22°F to 167°F with ±4% accuracy and relative humidity from 0 to 100% RH, achieving ±2.5% accuracy from 20 to 80% RH. It provides a 4 to 20mA output via screw terminals and has no display. Typical applications include building automation, HVAC control, and environmental monitoring in commercial or industrial facilities
The OMEGA EWS-RH is an indoor wall-mount transmitter for temperature and humidity monitoring. It uses a thin-film polymer capacitor sensing element and provides a 4 to 20mA or 1 to 5V DC output. The device has no display and is suitable for HVAC, clean rooms, and environmental control systems
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The OMEGA EWS-RH is an indoor wall-mount transmitter for temperature and humidity monitoring. It uses a thin-film polymer capacitor sensing element and provides a 4 to 20mA or 1 to 5V DC output. The device has no display and is suitable for HVAC, clean rooms, and environmental control systems