Not all combinations are valid. Options compatible with previous selections will be in bold.
*Highlighted options are not compatible. Please select a different combination.
The TX401 and TX402 head mount temperature transmitters transform a temperature signal acquired from a Pt100, Pt1000 (TX401 only) or Ni100 RTD sensor or from a thermocouple (TX402 only) into a linearized 2-wire loop-powered 4 to 20 mA output. The characteristics of these converters ensure high precision on the reading scale with 16-bit conversion. The 4 to 20 mA output can be scaled based on the desired temperature input range.
The programming procedure uses an RFID (NFC) mode with the dedicated TX400-RFID programmer that allows the user to make all calibrations and settings quickly and without the need to power and connect up the transmitter. Simply connect the TX400-RFID programmer to the USB port of your PC, start the RF Programmer configuration software and place the transmitter on top of the TX400-RFID programmer to establish communications.
An additional programming tool is the Omega Brand Google App - "Direct Link" relying on RFID/NFC connectivity and allowing straightforward programming without wirings by Android devices.
These temperature transmitters are also provided with a data logging function for the input signal. Transmitters have a non-volatile memory (circular buffer) for data-logging with user-selectable sampling time. The user selects the sampling time (1 to 3600 seconds) and then each time the 4 to 20 mA loop powers the device, the input value is stored to nonvolatile memory.
Using the TX400-RFID programmer along with the RF Programmer configuration software (software is a free download from OMEGA) the user can:
• Completely configure the transmitter including scaling the 4 to 20 mA output to desired temperature input range
• Implement field calibration to compensate for gain and offset errors
• Download logged data to PC for visualization and printing
RTD Input Types and Ranges:
TX401, TX402: Pt100 (a = 0.00385), 2, 3, or 4-wire connection: TX401: -200 to 800°C (-328 to 1472°F), TX402: -200 to 600°C (-328 to 1112°F)
TX401 Only: Pt1000 (a = 0.00385), 2-wire connection; -200 to 800°C (-328 to 1472°F)
TX401, TX402: Ni100 (a = 0.00618), 2, 3, or 4-wire connection: TX401: -50 to 170°C (-58 to 338°F), TX402: -60 to 180°C (-76 to 356°F)
Thermocouple Input Types (TX402 Only): J/K/T/E/R/S/B/N/mV
Output Resolution: 1 µA
Over-Range Output: FS + 5°C
Under-Range Output: FS - 5°C
Output Error (Failure): Selectable: TX401: between 21.5 or 3.8 mA, TX402: between 21 or 3.8 mA
Current Output Protection: 30 mA approx
Rejection: 50 to 60 Hz
Maximum Transmission Error: 0.1% FS or 0.2°C whichever is greater
Sampling Time: 300 msec
Response Time (10 to 90%): 600 msec
Non-Volatile Memory (Circular Buffer) for Data Logging:
TX401: 3966 Data Points
TX402: 2546 Data Points
Cable Resistance: 20Ω max
Temperature Coefficient: <100 ppm
Power: 2-wire loop powered; operating range 6 to 32 Vdc
TX402: galvanic, 1 KVac input/output
Operating Environment: -40 to 85°C (-40 to 185°F), 30 to 90% RH (non condensing)
Storage Temperature: -40 to 85°C (-40 to 185°F)
Mounting: DIN/B head
Enclosure Material: Nylon (PA66)
Enclosure Rating: NEMA 1 (IP20) according to CE, EN 61000-6-4, EN 61000-6-2
Programming: Wireless with RFID technology (NFC)
Software: Windows® XP/7/8 (32-bit and 64-bit), Windows 10 (64-bit)
Connection: Screw terminals
Weight: 30 g (1.05 oz) approx
Dimensions: 23 H x 45 mm dia (0.9 x 1.77")