Installation Instructions User guide

Bul. 937C Strain Gauge Converter Installation Instructions

Excitation, Sensitivity, Cell rating

• For the values of these parameters, please refer to the technical data of the sensor.

• The supply voltage exists between terminals 3 and 4.

• When connecting several measuring cells in parallel, the supply voltage and sensitivity must be

transferred, the cell data are to be totalled. Only cells of the same design and with identical cell

data may be connected in parallel.

• For a resulting total sensor resistance of R < 100 Ω the supply voltage 5V must not be selected.

The maximum permitted supply voltage is calculated as follows:

Supply voltage = 49 mA x total resistance of the measuring cells

•For th eCell data parameter, the maximum cell load must be set in kg (even if a different unit has

been selected).

The cell data can be set up without a measuring cell being connected. The Strain Gauge

Converter can then be connected

to the weighing cell and is basically ready for operation. The

voltage created by the weighing cell due to the load is converted linear into the corresponding

gross weight.

Please note that mechanical influences have not yet been taken into account (e. g. acting of forces on

the weighing cell other than perfectly vertically) so that the weighing device does not achieve its

optimum accuracy.

If you wa

nt to use the Strain Gauge Converter without calibration yet take into account

an existing empty weight (e. g. an empty tank or a weighing platform) when

measuring, do not use the function "Zero point" but the function "Tare".

To take into account mechanical influences a calibration of the fully

installed weighing

device using defined loads is unavoidable.

Note