Signal converters, C3-25

The C3-25 series is designed to measure temperature, voltage and current signals or resistive values from potentiometers or resistors. The signals will be transformed to 4-20mA signals with a 16 bit resolution.

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Product variants

Article Number Product Name
440301.1 + C3-25 TC + Request quote
Input J, K, R, S, T, B, E, N, thermo couple - output 4-20mA, 16 bit resolution
44310.1 + C3-25 I + Request quote
Input 0-24mA - output 4-20mA, 16 Bit resolution (current loop isolator)
440320.1 + C3-25 V + Request quote
Input 0-30mV, output 4-20mA, 16 bir resolution
440330.1 + C3-25 TR + Request quote
Input: PT100, PT500, PT1000, Ni100, 2-3-4 wire connection, output 4-20mA, 16 bit resolution
440340.1 + C3-25 R + Request quote
Input potentiometer or resistor, output 4-20mA, 16 bit resolution


The C3-25 is designed to measure the temperature, the voltage signals, current and resistive values from the potentiometer and resistance.
As temperature input is possible to connect all standard thermocouples J, K, R, S, T, B, E, N (EN 60584) and Pt100 resistance thermometer, Pt1000, Pt500 and Ni100 connected to 2, 3 and 4-wire. The models for acquiring the current (0-24mA) and voltage (0-30V) have a fast response time to changes of the variable (<250ms). The supply current is modulated by the converters of the measurement of the variable in the 4-20mA field C3-25 series making available immediately, while the operation with the power supply between 30Vdc 7Vdc and allows the use of converters in different applications.
The acquisition management system of measurement and current loop control guarantee the galvanic isolation of 1KVrms.


Power supply:
7 - 30VDC or current loop 4-20mA
Max. current absorbed:
1 input, 1 output
16 bit
Precision class:
0,1% (model C3-25 TC 0,2% )
Termal drift:
Degree of protection:
DIN-rail EN60715
WxHxD 10x90x100mm
C3-25 TC:
  • Input: J, K, R, S, T, B, E, N, impedance 10MΩ joint compensation -30°C to 60°C
  • Output: 4-20mA
C3-25 I
  • Input: 0-24mA, impedance 40Ω
  • Output: 4-20mA
C3-25 V
  • Input: 0-30mV
  • Output: 4-20mA
C3-25 TR
  • Input: PT100, PT500, PT1000, Ni100, 2-3-4 wire connection
  • Output: 4-20mA
C3-25 R
  • Input: potentiometer 500-10.000Ω Impedance 10MΩ, resistor ≤ 1700Ω
  • Output 4-20mA

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