HD 778 TR1 4-20mA/20-4mA 2 wire Temperature Transmitter for K, J, T, N thermocouples, configurable
with minimum amplitude range 50°C, in a container for DIN B 43760 heads.
Standard configuration 0 - 1000°C, thermocouple type K. Configurable with HD778TCAL.
HD 978 TR1 4-20mA/20-4mA 2 wire Temperature Transmitter for K, J, T, N thermocouples, configurable
with minimum amplitude range 50°C, in a container for DIN bar connection,
dimension 1 module.
Standard configuration 0 - 1000°C, thermocouple type K.
Configurable with HD778TCAL.
HD 978 TR2 4-20mA/20-4mA 2 wire Temperature Transmitter for K, J, T, N thermocouples, configurable,
minimum amplitude range 50°C, in a container for DIN bar connection,
dimension 2 modules,
with 3 ½ digit display, figure height 10mm.
Standard configuration 0-1000°C, thermocouple type K. Configurable with HD778TCAL.
HD 778 TCAL Power generator in the range -60mV - +60mV, regulated by PC through RS232C serial port, DELTALOG-7 software for setting K, J, T and N thermocouple transmitters.
Temperature transmitter
| Model | Description |
|---|---|
| HD778 TR1 | 2 wire Temperature Transmitter for K, J, T, N |
| HD978 TR1 | 2 wire Temperature Transmitter for K, J, T, N - configurable |
| HD978 TR2 | 2 wire Temperature Transmitter for K, J, T, N with display |
| HD 778 TCAL | Power generator in the range -60mV - +60mV |
| DELTALOG-7 | Software for setting K, J, T and N thermocouple transmitters. |
HD 778TR1, HD 978TR1 and HD 978TR2 are 4
- 20mA two-wired passive transmitters with a microprocessor.
These can be configured for thermocouple sensors type K, J, T and N.
They convert the voltage value generated by the thermocouple into an electric linear signal
within the 4 - 20mA range.
The use of digital devices obtains excellent precision and stability in time.
The user can set the 4 - 20mA (or 20 - 4mA) output in any temperature range included in the measurement
range of the individual thermocouples
with a minimum range of 50 °C.
The range and type of thermocouple are simply set by using one button.
A led signals the alarm situation (out of order or unconnected sensor) and helps the user during the
programming phases. The transmitters are also protected against polarity inversion.
HD778TR1 is specifically designed to be installed on DIN B connection heads; are suitable for mounting on 35 mm DIN bars. In addition to the 4
- 20mA output,
HD978TR2 has a 31⁄2 digit display (height 10 mm) that allows the measured temperature to be displayed.