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Model: 5731
Hydraulic Power Unit
08/2016 | Rev. 08
Page | 59
12.0
CALIBRATION OF INSTRUMENTATION
(
continued
)
12.3
ANALOG PRESSURE GAUGE (Hand Pump Pressure-
Option M Only
)
12.3.1
Self Calibration
An accurate pressure calibration gauge is required for calibration of the Hand Pump Pressure gauge. Follow the necessary
steps below.
Shut off the HPU and disconnect it from the power source. Remove the
Hydraulic Panel
from the front instrument panel (four
screws). Disconnect the hose from the Hand Pump Pressure gauge (remove gauge from panel if necessary). Attach
calibration test equipment to the gauge and record gauge values at the designated increments.
12.4
ANALOG TEMPERATURE GAUGE
(Pyrometer)
12.4.1
Self Calibration
An accurate temperature calibration gauge is required for calibration of the Pyrometer. The pyrometer bulb is located in the
return manifold (rear of unit) and can be accessed by removal of the HPU top panel. See Section
9.7.2
Pyrometer
for
location. Follow the necessary steps below.
1. Remove the pyrometer bulb from the return manifold by removing the slotted brass nut that retains the bulb in the well.
2. Connect the temperature calibration gauge to the bulb of the pyrometer.
The Temperature Value Must Be:
Pyrometer Temperature Display
(
F)
Minimum Acceptable
(
F)
Maximum Acceptable
(
F)
Temperature
Calibration gauge
(
F)
160
158
162
HAND PUMP PRESSURE GAUGE (HC-2146)
Applied Pressure
(Hand Pump
Pressure Gauge)
(psig)
Minimum
Acceptable
(psig)
Maximum
Acceptable
(psig)
Gauge Movement
(Direction)
Indicated Pressure
(Calibration Gauge)
(psig)
1000
700
1300
Increasing
2000
1700
2300
Increasing
5000
4800
5200
Increasing
8000
7700
8300
Increasing
10,000
9700
10,300
Increasing
8000
5940
8300
Decreasing
5000
4800
5200
Decreasing
2000
1700
2300
Decreasing
1000
700
1300
Decreasing
Allowable operating tolerance:
+/- 3% of full scale (300 psig) at room temperature (70
F).
+/- 2% of full scale for middle third of scale (200 psig) at room temperature (70
F).
Содержание 5731
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