Siemens SITRANS WW200 Panduan Petunjuk Pengoperasian - Halaman 24

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Commissioning

7.9 Load cell replacement

5. Route the load cell cable to the junction box and connect the load cell according to the

supplied interwiring diagram.

Repeat steps for other load cells if necessary.

Note

Once the load cell has been replaced, check the weigh deck alignment with the approach

and retreat slider bars.

Alignment should be +1/32" (+0.8 mm) to 0" (0 mm).

Please consider the max. tightening torque of the fixing screws :

● 10 Nm for stainless steel loadcells

● 30 Nm for nickel plated loadcells

Both load cells should be within 1 mV of each other when compared, otherwise mechanical

interference is affecting the output signal. Check load cells to ensure they are level and

parallel to each other and the frame.

6. Perform a load cell balancing procedure as described in the integrator instruction manual.

7.9.3

Recalibration

1. Power up the integrator and using the appropriate integrator menu, verify that the new load

cell(s) are operating correctly.

2. Zero calibrate the unit using the integrator manual for reference. Record zero calibration

procedure results.

3. Span calibrate the unit using the integrator manual for reference. Record span calibration

procedure results.

4. Re-check zero calibration. Run another zero calibration and record the results. Verify that

the zero repeated to the same value recorded in step 2.

5. Confirm calibration with material test as described in the integrator manual, if possible,

before placing the weighfeeder back in operation.

Operating Instructions, 06/2018, A5E33560654-AC

SITRANS WW200