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DIN Rail Mounting Temperature Transmitters

Isolated DIN Rail Mounting Universal Input 4~20mA Transmitter

Product Code: TXDU2

(146.00 exc. VAT)
(138.00 exc. VAT)
(132.00 exc. VAT)
Please enter your configuration requirements below (see table for options). Enter "Not Required" if configuration is not required. Examples: Thermocouple Type K, 0 to 180 and Pt100 3-wire, -50 to 300

Configuration requirements:  

The TXDU2 DIN rail mounting isolated transmitters are microprocessor based and fully linearised. As standard they feature a universal 2-wire, 4~20mA output (loop power) and universal input which accepts the following:

• RTD (Pt100 or Pt1000)
• Thermocouple (Types K, J, T, N, E, R, S, B)
• Millivolts (mV)
• Milliamps (mA)
• Voltage (V)
• Potentiometer

We can offer the following pre-configuration options (note: temperature range must fall within minimum/maximum range for an input)

Input TypeMinimum TemperatureMaximum Temperature
Thermocouple Type K-200°C+1372°C
Thermocouple Type J-100°C+1200°C
Thermocouple Type T-200°C+400°C
Thermocouple Type N-180°C+1300°C
Thermocouple Type E-100°C+1000°C
Thermocouple Type R-50°C+1760°C
Thermocouple Type S-50°C+1760°C
Thermocouple Type B0°C+1820°C
Pt100 3-wire-200°C+850°C
Pt1000 3-wire-200°C+850°C

The units are loop powered, 10-36 V DC and can be supplied configured to suit your application requirements (simply enter your configuration requirements above) or can be easily configured yourself using the TX-USB Configuration Kit which is available separately. Simply install the software (which is available for free download from our website), connect the USB configuration module and plug the lead into the transmitter. The software will then provide the necessary prompts.

Technical Details (Common)
Output4~20mA, 2-wire (loop powered)
Power Supply10-36V DC
Isolation Test VoltagesBetween input/output: 3750V AC for 1 minute
Output Load Resistance700Ω at 24V DC (50Ω/V above 10V DC)
Maximum Output CurrrentLimited to < 28mA (emission & immunity)
Accuracy< ±0.03% FSO typical
Ambient Drift< ±0.003%/°C FSO typical
Noise Immunity125dB CMRR average (2.0kV DC limit)
R.F. Immunity<1% effect FSO typical
Reponse Time400ms typical (10-90% 300ms typical)
USB Programmable Zero0 to ±99% of the span (Potentiometer input N/A)
Operating Temperature-20°C to +85°C
Storage Temperature-20°C to +85°C
Operating Humidity5-85% RH max (non-condensing)
Mounting35mm symmetrical DIN rail
Dimensions20mm (W) x 79mm (H) x 68mm (D)
EMC ComplianceEmissions (EN 61326)
Immunity (EN 61326)
Safety (EN 61010-1)


RTD Input Specifications
InputPt100 or Pt1000 DIN 3-wire type (2-wire can be used with offset calibration)
Sensor Current0.15mA nominal
Lead Wire ResistancePt100: 10Ω/wire max.
Pt1000: 5Ω/wire max.
0.02% FSO offset error per Ω of lead resistance
Accuracy≤ 0.1°C (0°C to +100°C)
≤0.3°C (-200°C to 0°C; +100°C to +850°C)
USB Programmable Span-200°C to +850°C
Sensor Break Output DriveFunction high upscale/low downscale
Linearity (Pt100)0.02% FSO for span inputs ≤ +200°C
0.1% FSO for span inputs ≤ +850°C
Linearity (Pt1000)0.02% FSO for span inputs ≤ +200°C
0.2% FSO for span inputs ≤ +520°C


Thermocouple Input Specifications
Thermocouple TypesK, J, T, N, E, R, S, B
Input Impedance1MΩ min
Thermocouple Lead Resistance100Ω max
Cold Junction Compensation-20°C to +90°C
AccuracyTypes K, J, T, N, E: < ±1°C
Types R, S, B: < ±2°C
Temperature DriftTypes K, J, T, N, E: < ±0.05°C
Types R, S, B: < ±0.2°C
Sensor Break Output DriveFunction high upscale/low downscale
CJC Error< ±1°C


Current Input Specifications
Field Programmable Span1μA-24mA DC
Input Resistance10Ω
Maximum Over-Range50mA DC continuous
Linearity and Repeatability< ±0.02% FSO typical


Voltage Input Specifications
USB Programmable Span100mV to ±10V DC (bipolar)
Input Resistance300kΩ min
Maximum Over-Range60V DC continuous
Linearity and Repeatability< ±0.02% FSO typical


Potentiometer Input Specifications
Potentiometer Input3-wire potentiometer
Excitation Voltage1.2V DC
Potentiometer Resistance0-2KΩ low pot, 0-1MΩ high pot
Field Programmable Zero0-90% of the span
Field Programmable Span0.1-100%
Linearity and Repeatability< ±0.02% FSO typical

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