RTD Temperature Transducers

DIN rail mounting transducers available in 55mm x 112mm or 100 x 112mm DIN  rail cases.

Used to convert various inputs into standard DC signals for driving panel meters and for use in control devices.

M100-RTD RTD temperature measurement

The M100-RTD monitors the resistance of either 100 Ohm platinum or 120 Ohm Nickel. The RTDs resistance increase as the temperature rises, this resistance change is detected by the M100-RTD, which provides an output corresponding to the temperature being measured. The temperature versus resistance values are provided by the supplier of the RTD used.

RTD measurement of temperature is used in large transformers and large motors to ensure winding temperatures do not rise to a level that would change the winding.

2 or 3 wire input
Platinum Pt 100 Ohm RTD min. span 20 Ohms...max
span 200 Ohms
Nickel Ni 120 Ohm RTD min. span 24 Ohms...max
span 240 Ohms
Rated value mA 0-1 / 5 / 10 / 20 & 4-20mA
Rated value volts 0-5 / 10 & 1-5V
ACCURACY Class ±0.5%
Zero ±2%
Span ±10%
A.C. Voltage 115 / 230 / 400V(±25% / 45-65
Hz / <2VA)
D.C. Voltage 24/48/110V(±20% /
galvanically isolated / <3W)
Approx 0.3kg. 55mm case
Product Code RTD Temp O/p Aux Freq Options
M100-RTD Pt100 0-250ºC 5mA 230v 50Hz


1 Non standard inputs/outputs as far as technically viable
2 A.C. Auxiliary in range 57.7 to 450 volts
3 Calibration at temperature other than 23ºC