Head Mounting Universal Input 4~20mA Transmitter

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Code
TXHU.

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Low-cost, loop powered, microprocessor based linearised head mounting transmitters with universal input that accepts RTD (Pt100 or Pt1000) and Thermocouple (Types K, J, T, N, E, R, S, B) inputs.

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The TXHU range of low-cost, loop powered, microprocessor based linearised transmitters have, as standard, a universal input that accepts RTD (Pt100 or Pt1000) and Thermocouple (Types K, J, T, N, E, R, S, B) inputs.

Factory set as 3-wire Pt100 input, range 0...100°C.

The transmitters can be supplied pre-ranged to suit your application requirements (simply enter your configuration requirements above) or can be easily configured using the TX-USB configuration kit. 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.

Features

  • Microprocessor based and fully linearised
  • Accepts RTD (Pt100 or Pt1000) and Thermocouple (K, J, T, N, E, R, S, B) inputs
  • 2-wire, 4~20mA output (loop powered)
  • Factory set as 3-wire Pt100 input, 0...100°C (can be easily configured)

Pre-ranged Options (if required)

Note: requested temperature range must fall within minimum/maximum range for an input.

Input Type Minimum Temperature Maximum 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 B 0°C +1820°C
Pt100 3-wire -200°C +850°C
Pt1000 3-wire -200°C +850°C
More Information
Product Extra Information

Specification (Common)

Output 2-wire, 4~20mA (loop powered)
Power Supply 9.5-36V DC
Supply Voltage Sensitivity < ±0.005%/V FSO
Output Load Resistance 700 Ω at 24V DC (50 Ω/V above 9.5V DC)
Maximum Output Currrent Limited to < 28mA (emission & immunity)
Accuracy < ±0.03% FSO typical
Ambient Drift < ±0.003%/°C FSO typical
Noise Immunity 125dB CMRR average (2.0kV DC limit)
R.F. Immunity <1% effect FSO typical
Reponse Time 400ms typical (10-90% 300ms typical)
Sensor Break Output Drive Function high upscale/low downscale
USB Programmable Zero 0 to ±99% of the span
Operating Temperature -20°C to +65°C (-4°F to +149°F)
Storage Temperature -20°C to +100°C (-4°F to +212°F)
Operating Humidity 5-85% RH max (non-condensing)
Dimensions 44mm (W) x 23mm (H) x 44mm (D)
EMC Compliance Emissions (EN 61326), Immunity (EN 61326), Safety (EN 61010-1)

RTD Input Specification

Input Pt100 or Pt1000 DIN 3-wire type (2-wire can be used with offset calibration)
Sensor Current 0.15mA nominal
Lead Wire Resistance Pt100: 10Ω/wire max.
Pt1000: 5Ω/wire max.
0.02% FSO offset error per Ω of lead resistance
Accuracy ≤ 0.3°C
USB Programmable Span -200°C to +850°C (-328°F to +1562°F)
Linearity (Pt100) 0.02% FSO for span inputs ≤ +200°C (+392°F)
0.1% FSO for span inputs ≤ +850°C (+1562°F)
Linearity (Pt1000) 0.02% FSO for span inputs ≤ +200°C (+392°F)
0.2% FSO for span inputs ≤ +520°C (+968°F)

Thermocouple Input Specification

Thermocouple Types K, J, T, N, E, R, S, B
Input Impedance 1MΩ min
Thermocouple Lead Resistance 100Ω max
Cold Junction Compensation -20°C to +65°C (-4°F to +149°F)
CJC Error < ±2°C
Accuracy Types K, J, T, N, E: < ±2°C
Types R, S, B: < ±3°C
Temperature Drift Types K, J, T, N, E: < ±0.05°C
Types R, S, B: < ±0.2°C
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