Digital multi-input dual channel transmitter
Transmitters in the OPTITEMP TT 31 R series are universal, separate 1 & 2 channel two-wire transmitters, available for both ex and non-ex applications.
For hazardous (Ex) applications, no zener barriers or intrinsically safe power supply units are necessary, considerably reducing the costs for purchase and servicing.
The TT 31 R is designed to be mounted on DIN rails.
Output: 0/4 … 20 mA, 0/1 … 5 V, 0/2 .. 10 V
Intrinsically safe version with 1 or 2 channels. 
Non-intrinsically safe version with 1 or 2 channels.
Features
- Extremely cost-efficient solution for hazardous (Ex) applications
 
- Completely universal, linearized and isolated
 
- Input: Resistance thermometers, Thermocouples, mV and Ω
 
- Sensor and system error correction (sensor/transmitter) for maximum accuracy
 
- Complete access to all functions during operation
 
- Constant sensor break function
 
- Simple loop checking with calibrated output
 
- User-friendly Windows configuration software
 
- Only 11 mm per channel (2-channel version)
 
- Permanent or removable connections
 
Industries
- Chemicals
 
- Oil & Gas
 
- Power industry
 
- Iron, Steel & Metal
 
- Pulp & Paper
 
- Food & Beverage
 
- Pharmaceutical