Nexen SC100 964420 User Manual

Page 13

FORM NO. L-21163-C-0808

CALIBRATION

NOTE: Prior to calibration, make sure the Span and Zero Potentiometers are fully counterclockwise and the Output
Selector switches are set to Individual and voltage output for both Channel 1 and Channel 2.

This procedure refers to the 0–10 VDC output, however the 4-20 mA will also change automatically in proportion
to the voltage output.

When calibration procedure is complete, place the Output selector switches to the setting required for the
application, Refer to SWITCH SETTINGS.

TENSION SENSORS

ERO

DJUSTMENT

1. Apply Power to the SC100.

2. Unload the sensor or sensors making sure their

outputs represent the minimum value or at rest
condition.

3. Connect a voltmeter to terminals 5 (+) and 6 (-).

4. Rotate Z1 until the voltmeter reads 0.025 VDC.

5. Connect a voltmeter to terminals 7 (+) and 8 (-).

6. Rotate Z2 until the voltmeter reads 0.025 VDC.

PAN

DJUSTMENT

1. Apply a known load to the sensor 1 (See Figure 19).

2. Connect a voltmeter to terminals 5 (+) and 6 (-).

3. Rotate S1 clockwise to increase the reading to the

desired voltage level. Example: Maximum Load =
100 lbs, with a 50 lb known load adjust the output
for 5.0 VDC to achieve a 10V output at maximum
load.

NOTE: If using one sensor, skip steps 4 through 6.

4. Connect a voltmeter to terminals 7 (+) and 8 (-).

5. Rotate S2 clockwise to increase the reading to the

desired voltage level.

6. Repeat

the

Zero Adjustment and Span Adjustment

procedures detailed above.

NOTE: Span Adjustments procedures may offset
the Zero Adjustment settings. Repeating both
procedures will ensure that settings are accurate.

7. Set the Output Mode switch to the desired setting,

either Individual or Summed (See Switch Settings in
SETUP section).

Figure 19

Thread rope through the

center and secure this end.

Hang a known

weight from

this end.