TXDIN400-Series-Tx

Supported Applications

The Omega TXDIN400 Series comprises DIN rail mount transmitters with RFID communications, designed for signal conditioning in industrial environments. The series includes two distinct models: the TXDIN401, a temperature transmitter accepting RTDs and thermocouples, and the TXDIN402, configured for process inputs including voltage, current, and resistance.

Both units are 2-wire loop-powered devices featuring a 4 to 20 mA output. Configuration is performed wirelessly using the TX400-RFID programmer connected via USB to a PC running free downloadable configuration software from Omega. The transmitters include non-volatile memory for data logging with user-selectable sampling times ranging from 1 to 3600 seconds.

Operating Conditions & Performance

The TXDIN400 Series operates within an ambient temperature range of -40 to 85°C (-40 to 185°F) and a storage temperature of -40 to 85°C (-40 to 185°F). Humidity ratings are specified as 30 to 90% RH (non condensing).

Performance specifications include a maximum transmission error of 0.1% FS or 0.2 °C whichever is greater, with a resolution of 2 μA and a response time of 600 msec (10 to 90%). The enclosure rating is NEMA 1 (IP20) according to CE, EN 61000-6-4, and EN 61000-6-2. Power supply requirements are met via a 2-wire loop-powered design with an operating range of 6 to 32 Vdc.

Configuration Options

The series supports multiple sensor types and process inputs across its two models, configurable for specific measurement needs:

• TXDIN401 Temperature Inputs:
• Pt100 RTD: α = 0.00385; 2, 3, or 4-wire connection; -200 to 600°C (-328 to 1112°F)
• Ni100 RTD: α = 0.00618; 2, 3, or 4-wire connection; -60 to 180°C (-76 to 356°F)
• Thermocouple J: -200 to 1200°C (-328 to 2192°F)
• Thermocouple K: -260 to 1360°C (-436 to 2480°F)
• Thermocouple T: -260 to 400°C (-436 to 752°F)
• Thermocouple E: -260 to 940°C (-436 to 1724°F)
• Thermocouple R: -40 to 1760°C (-40 to 3200°F)
• Thermocouple S: -40 to 1760°C (-40 to 3200°F)
• Thermocouple B: 40 to 1820°C (104 to 3308°F)
• Thermocouple N: -260 to 1280°C (-436 to 2336°F)
• mV Input: -10 to 70 mV
• TXDIN402 Process Inputs:
• Voltage: 0 to 10 V
• Current: 0 to 20 mA (4 to 20 mA default)
• Resistance: 0 to 4000 Ω

The enclosure is constructed of polycarbonate with a silicone front panel. Electrical connections are made via screw terminals. The device dimensions are 90 H x 18 W x 64 mm D (3.54 x 0.71 x 2.52") and weigh approximately 30 g (1.05 oz).

Key Product Differences

The TXDIN400 Series is differentiated by input type:

• TXDIN401: DIN rail mount RFID temperature transmitter supporting Pt100, Ni100 RTDs, and thermocouples J/K/T/E/R/S/B/N.
• TXDIN402: DIN rail mount RFID voltage, current, and resistance input transmitter.

Both models share the same physical housing, output signal (4 to 20 mA loop-powered), power requirements, memory capabilities for data logging, and wireless programming interface via the TX400-RFID programmer. Accessories include the TX400-RFID programmer supplied with a User Guide and USB interface cable, as well as DIN rails RAIL-35-1 (1 m length) and RAIL-35-2 (2 m length).