Moore Industries IPF, Руководство пользователя

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IPF
Page 7
Table 3 lists the values to be used during calibration.
Refer to the table when performing the following:
1. Check unit zero setting. Monitor reading of
pressure gauge #2 (output), and turn zero adjust
screw counterclockwise to lower output, clock-
wise to raise output. Set zero adjust screw so
that pressure output is at 0% of appropriate
range (±3%) when 0% input is applied.
2. Check unit span setting. Increase input to 100%
of rated span; 20 mA for 4-20 mA units, or 50 mA
for 10-50 mA units.
3. Monitor reading of pressure gauge #2 (output),
and adjust span pot so that reading is at 100% of
appropriate pressure range for your unit.
Check the values listed in Table 3.
8. Set span pot to approximate mid-scale (22 turns
in either direction, then approximately 11 turns in
the opposite direction).
9. Set zero adjustment screw fully clockwise, then
five turns counterclockwise.
10. Allow approximately 5 minutes for calibration
setup to stabilize.
Calibration Procedure
To perform the recommended bench check for the
IPF, first perform the setup as described in the
preceding section. The calibration procedure con-
sists of a basic check and adjustment of unit zero
and span, based on the reading of pressure gauge
#2 (accuracy of ±0.1%).
IPF Output
At
0% of
Rated Input
Range*
(4 or 10 mA)
At
100% of
Rated Input
Range*
(20 or 50 mA)
Verify by
Applying
25% of
Rated Input
Range*
Verify by
Applying
50% of
Rated Input
Range*
Verify by
Applying
75% of
Rated Input
Range*
Configuration*
Adjust Zero
until Gauge
#2 Reads:
Adjust Span
until Gauge
#2 Reads:
Gauge #2 will Read:
3-15 psig 3 psi 15 psi 6 psi 9 psi 12 psi
15-3 psig 15 psi 3 psi 12 psi 9 psi 6 psi
0.2-1 bar 0.2 bar 1 bar 0.4 bar 0.6 bar 0.8 bar
1-0.2 bar 1 bar 0.2 bar 0.8 bar 0.6 bar 0.4 bar
3-27 psig 3 psi 27 psi 9 psi 15 psi 21 psi
3-16.6 psig 3 psi 16.6 psi 6.4 psi 9.8 psi 13.2 psi
20-100 kPa 20 kPa 100 kPa 40 kPa 60 kPa 80 kPa
100-20 kPa 100 kPa 20 kPa 80 kPa 60 kPa 40 kPa
* Verify appropriate output configuration and percentage of rated input range against unit model number.
Table 3.
IPF Calibration Values