Thermocouple Temperature

Posted on Posted in Transducers

Description

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

 

Application

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

Selection Guide

M100-TJ1 Type J thermocouple
M100-TK1 Type K thermocouple

Typical Applications

The M100-TJ1 and TK1 measure the millivolt drop of J and K  type thermocouples respectively. Thermocouples are made from two dissimilar metals and as the temperature rises, the mV accross the thermocouple increases. The millivolts voltage developed corresponds to the change in  temperature, thermocouple manufacturers provide tables showing temperature versus voltage drop.

The M100 TJ1 / TK1 measures this voltage change and converts it to an output signal that corresponds to the temperature being monitored. The output from the M100-TJ1 / TK1 is not linearised.

Thermocouple temperature measurement is used in a variety of applications, including monitoring of  temperature of furnaces etc. The M100 thermocouple transducer is provided with automatic cold junction temperature compensation over the range 0-50ºC. Also provided is thermocouple break protection should the thermocouple leads break, the output from the transducer will go to its maximum or minimum output value, depending on which option is chosen at the time of ordering.

Technical Specifications

INPUT
Type J Fe/Const Min range 0-185ºC (min. span 10mV)
Max range 0-870ºC (max. spam 50mV)
Type K NiCr/NiAl Min range 0-245ºC (min. span 10mV)
Max range 0-1230ºC (max span 50mV)
Impedance >10kOhm
Thermocouple Break Prot Upscale or downscale optional
Cold junction compensation Automatic over the range 0-50ºC
Overload 10 x input continuous
OUTPUT
Rated value mA 0-1/5/10/20 & 4-20mA
Load Resistance 12/2.4/1.2/0.6 kOhm
Rated value volts 0-5 / 10 & 1-5V
ADJUSTMENT
Zero ±2%
Span ±10%
AUXILIARY
A.C. Voltage 115 / 230 / 400V (±25% / 45-65Hz / < 2VA)
D.C. Voltage 24 / 48/ 110V (±20% /
galvanically isolated / <3W)
WEIGHT&CASE SIZE
Approx 0.4kg. case 55mm

Ordering Information

Product Code Temp O/p Aux Freq Options
M100-TK1 0-500ºC 1mA 120V 60Hz Up Scale

Options

1 Non standard inputs/outputs where technically viable
2 A.C. Auxiliary in range 57.7 to 450 volts
3 Calibration at temperature other than 23ºC
4 Up or down scale break protetion

A.C. Current Connection Diagrams

THERMCON