UWTC-2A-NEMA-Series

Supported Applications

The Omega UW Series Wireless NEMA 4X Dual Thermocouple Transmitter is a weather-resistant, battery-powered industrial transmitter designed to measure temperature using thermocouples and transmit data wirelessly. The series supports permanent installation in industrial environments where remote monitoring of process or ambient conditions is required without wired infrastructure.

Documented applications include transmitting measured temperatures along with RF signal strength and battery condition to a host receiver, such as the UWTC-REC Series. Data received by compatible receivers can be displayed on a computer using TC Central software. The device operates at 2.4 GHz ISM band frequencies and is intended for use in regions including the US, Canada, Europe, and China.

Important usage constraints documented in the source include:

• The device must not be used in medical or nuclear applications.
• Operation in flammable or explosive environments is prohibited.
• No co-location with other radio transmitters within 20 cm is allowed.
• Installation closer than 20 cm to nearby persons is restricted.

Operating Conditions & Performance

The UWTC-2A-NEMA series supports nine thermocouple input types: J, K, T, E, R, S, B, C, and N. Measurement ranges vary by type:

• J: -100 to 760°C (-148 to 1400°F)
• K: -100 to 1260°C (-148 to 2300°F)
• T: -200 to 400°C (-328 to 752°F)
• E: -200 to 1000°C (-328 to 1832°F)
• R: 260 to 1760°C (500 to 3200°F)
• S: 260 to 1760°C (500 to 3200°F)
• B: 870 to 1820°C (1598 to 3308°F)
• C: 0 to 2315°C (32 to 4200°F)
• N: -100 to 1260°C (-148 to 2300°F)

Accuracy specifications are defined by thermocouple type:

• J, K: ±0.5% of reading or ±1.0°C (1.8°F), whichever is greater
• T, E, N: ±0.5% of reading or ±2.0°C (3.6°F), whichever is greater
• R, S, B, C: ±0.5% of full scale

The resolution is 1°C/1°F with automatic cold junction compensation from -10 to 70°C (14 to 158°F). The operating environment range for the transmitter enclosure is -10 to 70°C (14 to 158°F).

Configuration Options

The series features a NEMA 4X (IP65) polycarbonate enclosure with dimensions of 145.8 L x 94.7 W x 50.8 mm H (5.74 x 3.73 x 2"). Power is supplied by one included 3.6V lithium “C” cell battery, providing a typical life of 3 years at a sample rate of 1 per minute @ 25°C.

Wireless transmission utilizes ISM 2.4 GHz direct sequence spread spectrum with an RF output power of 10 dBm (10 mW). The communication standard is IEEE 802.15.4, open architecture. Range capabilities are:

• Outdoor Line of Sight: Up to 120 m (400')
• Indoor/urban: Up to 40 m (130')

The transmit sample rate is programmable from 2 sec to 2 min. Sensor connection is via an internal connection block.

Compatible Receivers and Accessories

• UWTC-REC1: USB powered 48-channel transmitter receiver
• UWTC-REC2-(*): 48-channel receiver with analog output (specify V1 for 0 to 5 Vdc, V2 for 0 to 10 Vdc, or MA for 4 to 20 mA)
• UWTC-REC2-D-(*): 48-channel receiver with analog output and display
• UWTC-REC3: 32-channel wireless receiver with ethernet
• UWTC-REC4-(*): 48-channel DIN rail receiver with 4 analog outputs, 48 alarms
• UWTC-REC6-(*): 1-channel transceiver with analog output
• UWTC-CABLE: Spare USB programming/communication cable
• UWM-DINRAIL: DIN rail mounting bracket assembly
• BATT-C-3.6V: Replacement 3V C cell Li battery

Key Product Differences

The series is identified by the model number UWTC-2A-NEMA, described as a weather-resistant thermocouple-to-wireless transmitter with NEMA enclosure. The product overview notes that units can be programmed for any of 9 thermocouple calibrations.

Receivers in the compatible ecosystem offer variations in channel count (1 to 48), output types, and mounting styles:

• Analog outputs on receivers are configurable as 0 to 5 Vdc, 0 to 10 Vdc, or 4 to 20 mA.
• Some receiver models include a display (e.g., UWTC-REC2-D).
• DIN rail mounting is supported via the UWM-DINRAIL accessory for specific receiver configurations.