Installation Instructions Owner manual

Bul. 937C Universal Temperature Converter Installation Instructions

The following parameters can be set:

• Sensor (see Connection section):

− Resistance temperature detector: Pt10GOST etc.

− Thermocouple: TXK etc.

− Potentiometer

− Voltage

• Connection mode (for resistance temperature detectors only, see Connection section):

− 2-wire

− 3-wire

− 4-wire

• Unit:

− for resistance temperature detectors and thermocouples: °F, K or °C

− for potentiometers: fixed ratio

− for voltage (sources): fixed mV

The unit selected here will be used for all respective settings and displays in PACTware

• Cold junction compensation (for thermocouples only):

− external (Reference temperature)

− internal (Bul 937A-TCJC)

If you have selected Ext. ref. temp., you can enter the external reference temperature

(range of values: -100 °C to 320 °C)

For an internal Cold junction compensation, you require the Bul 937A-TCJC terminal block as

an accessory instead of the normal terminal 1 to 3 (see Connection section).

• Lead Resistance: When connecting an RTD with 2 wire connection the lead resistance of the

cabling can be entered numerically if known.

• 2-Wire Calibration: When connecting an RTD with 2-wire connection the lead resistance of the

cabling can be calibrated if the resistance is unknown. For calibration the sensor must be jumpered.

• Sensor-breakage monitoring (for all types of sensors)

• Sensor-short-circuit monitoring (for resistance temperature detectors only)

You activate or deactivate monitoring by clicking the respective checkbox

( = selected,  = deselected).