SERIES 8159 SIGNAL CONDITIONER MANUAL
12
REMOTE TARE (ZERO)
Remote zero will tare out any residual value, such as that caused by fixturing a load cell into a
test stand. It is activated by momentarily connecting pin 14 to pin 5 on the 15-pin I/O connector
J8.
REMOTE REBOOT
This feature is used to clear the high or low set points if required. It is activated by momentarily
connecting pin 8 to pin 5 on the 15-pin I/O connector J2.
7.0
CALIBRATION INSTRUCTIONS
The Series 8159 can be calibrated using (2) different methods. The first method uses actual or
simulated ZERO and FULL SCALE (FS) inputs. Actual inputs may come from a strain gage
transducer loaded with calibrated weights. Simulated inputs may come from a strain gage bridge
simulator. The second method utilizes an RCAL resistor to simulate a load on a strain gage
bridge. The RCAL resistor is activated when the RCAL (S5) switch is depressed. Reference
Figure 10 for location of S5.
ACTUAL LOAD OR BRIDGE SIMULATED METHOD
1.
Connect the strain gage transducer to the instrument using Figure 4 as a reference. Do
not apply any load to the transducer.
2.
Apply power to the instrument.
NOTE: If the instrument was previously calibrated and no new calibration is required, do
not proceed any further. All previous calibration information is stored in non-volatile
EEPROM and is ready for use when power to the instrument is reapplied.
3.
Calculate the CAL NUMBER by verifying the load that will be used to calibrate the full
scale of the Series 8159.
Example: If a 500-pound load is used to calibrate full scale and the desired readout is
500.0, the CAL NUMBER will be 5000. The decimal point can be selected later. If the
desired readout is 500 then the CAL NUMBER will be 500.
4.
Program in the CAL NUMBER. Reference PROGRAM INSTRUCTIONS, Step 7. If
the CAL NUMBER was previously programmed, skip this step.
5.
The TARE and CAL LED's on the front panel should be illuminated.
6.
Depress the INCREMENT (S2) switch and hold until the TARE LED extinguishes. The
instrument should now display the UNTARED reading.
7.
Depress the DECREMENT (S3) switch and hold until the CAL LED extinguishes. The
instrument should now display the UNCALIBRATED reading.
