BC 7687 Universal controller - transmitter

The instrument is used when there is a need to add display

functions, control, alarm, and / or automatic cleaning of the

sensor to a transmitter capable of performing any type of

measurement.

The instrument provides:

- measuring display in the selectable range from -9999 to 9999, corresponding to the 0-20 mA or 4-20 mA input;

- Vdc power to power the 4-20 mA loop of the transmitter;

- automatic measurement control function

- alarm from the low/high measurement, the set point overtime operation and the logic input;

- programmable dual analog output for recording and acquisition of the measurement values or PID regulation;

- hold / alarm function activated by two external volt free contacts

- automatic /manual autoclean function.

This unit allows a differential measurement, by using two 0-20 mA or 4-20 mA transmitters featuring the same measurement scale.

Specifications

Display: multi-line graphic
Input from: 0-20 or 4-20 mA single or differential
- Scale: - 9999 / +9999 with selectable decimal point
- Measuring unit: selectable and 4 digit configurable
2 set-point with min/max function, hysteresys and delay time programmable
Analog output: 0-20 or 4-20 mA isolated for PID regulation or measure transmission
Min/max alarm relay, activate/deactivate function selectable
Parameters configuration on two levels with access code selected by the operator
Two logic digital input for hold or alarm function, selectable