Temperature head transmitter for Pt100 signal conversion

Transcont KTM / ExKTM

Temperature head transmitter for Pt100 signal conversion from -100°C to +600°C, with 4…20mA or 0…10V output, 2- or 3-wire Pt100 connection, 12 standard ranges and optional ExKTM ATEX version.

Introduction

Accurate Pt100 temperature signals become easier to use in control and evaluation systems when they are linearized directly at the measuring point. Transcont KTM / ExKTM converts Pt100 signals from -100°C to +600°C into standard 4…20mA or 0…10V outputs, with measuring spans up to 700 Kelvin.
 
The transmitter supports Pt100 sensors in 2- or 3-wire connection. For higher measurement quality, the 3-wire connection can eliminate the influence of lead resistance. Sensor breakage and short circuit supervision add clear fault behavior at the output, with defined values such as 21.7 mA or 10.85 V for wire break.
 
Installation is compact and practical in a connection head style B according to DIN 43729 or in a field housing. The family offers 12 standard measuring ranges or customer-specific adjustment, while the ExKTM version adds ATEX II 1 G Ex ia IIC T4 certification for use in explosion hazardous areas.

Pt100 made usable
Pt100 made usable
Linearizes Pt100 signals from -100°C to +600°C for standard outputs.
Flexible output
Flexible output
Select 4…20mA, 0…10V or 4…20mA with optional PNP switching output.
Lead error control
Lead error control
3-wire Pt100 connection can eliminate the influence of lead resistance.
Fault supervision
Fault supervision
Wire break and short circuit generate defined output fault signals.
Ex area option
Ex area option
ExKTM is certified ATEX II 1 G Ex ia IIC T4 for hazardous areas.

Features

Pt100 input

The transmitter connects to Pt100 temperature resistors in 2- or 3-wire technology and uses a constant measuring current.

Standard signal conversion

The measured Pt100 voltage signal is linearized and converted into a 4…20mA current signal or 0…10V voltage signal.

Measuring range selection

The product family includes 12 standard measuring ranges, with a special measuring range available by separate specification.

PNP switching output

The AS version integrates a freely adjustable PNP switching output with working current principle, overload protection and short circuit protection.

Connection head mounting

The housing is suitable for installation in connection head style B according to DIN 43729 and can also be installed in a field housing.

Maintenance-free design

The device is free of maintenance and, due to its construction, is not intended for repair.