3500/42 Operation and Maintenance
Maintenance
131
Example 2:
Transducer scale factor = 7,874 mV/mm
Meter scale range = 1-0-1 mm
Zero Position Voltage = -10.16 Vdc
Full Scale Value
= (-10.16) + (7.874
×
1)
= -2.286 Vdc
Bottom Scale Value = (-10.16) - (7.874
×
1)
= -18.03 Vdc
If Upscale direction (Normal for Thrust, Long for Differential Expansion) is away
from the probe:
Full Scale =
(Zero Position Voltage) - (Transducer Scale Factor
×
Top Meter Scale)
Bottom Scale =
(Zero Position Voltage) + (Transducer Scale Factor
×
ABS(Bottom Meter
Scale)
Example 1:
Transducer scale factor = 200 mV/mil
Meter scale range = 25-0-25 mil
Zero Position Voltage = -9.75 Vdc
Full Scale Value
= (-9.75) - (0.200
×
25)
= -14.75 Vdc
Bottom Scale Value
= (-9.75) + (0.200
×
25 )
= -4.75 Vdc
Example 2:
Transducer scale factor = 7,874 mV/mm
Meter scale range = 1-0-1 mm
Zero Position Voltage = -10.16 Vdc
Full Scale Value
= (-10.16) - (7.874
×
1)
= -18.03 Vdc
Bottom Scale Value
= (-10.16) + (7.874
×
1)
= -2.286 Vdc
4. Adjust the power supply voltage to match the voltage displayed in the Z.P.
Volts box. The Direct bar graph display and the Current Value Box should
read 0 mil (0 mm) ±1 %.
5. Adjust the power supply voltage for the calculated full scale. Verify that the
Direct bar graph display and the Current Value Box is reading ±1 % of full
scale. If the recorder output is configured, refer to Section 5.1.10 (Verify
Recorder Outputs) for steps to verify the recorder output.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com