Basic Maintenance; Cleaning The Processmeter; Replacing The Batteries - Fluke ProcessMeter 789 Calibration Manual

789
Calibration Manual
Equipment
Calibration Source
Digital Process Meter or
Digital Process Calibrator
Digital Multimeter
Test Leads, low leakage,
RG-58/U type
1-kΩ shunt

Basic Maintenance

Cleaning the ProcessMeter

To avoid electrical shock or damage, never allow water inside the
case of the ProcessMeter.
If the ProcessMeter requires cleaning, wipe it down with a cloth that is lightly dampened
with water or a mild detergent.
Do not use aromatic hydrocarbons, chlorinated solvents, or methanol-
based fluids when wiping down the ProcessMeter. To avoid damaging
the case, never apply solvents to the case of the ProcessMeter.

Replacing the Batteries

To avoid electrical shock:
•
•
Replace the batteries as follows. Refer to Figure 1. Use four AA alkaline batteries.
1. Remove the test leads and turn the ProcessMeter OFF.
2. With a standard blade hand screwdriver, turn each battery compartment door screw
3. Lift off the battery compartment door.
4. Remove the ProcessMeter's batteries.
5. Replace with four new AA alkaline batteries.
6. Reinstall the battery compartment door and tighten screws.
8
Table 2. Required Equipment and Software
No Substitute
No Substitute
No Substitute
Leakage resistance > than 1.0 x 10
45 °C and 75 % relative humidity
1 kΩ, 1 %, 2 watts, Low TC is preferable
Remove test leads from the ProcessMeter before opening the
battery compartment door.
Close and latch the battery compartment door before using the
ProcessMeter.
counterclockwise so that the slot is parallel with the screw picture molded into the
case.
Minimum Specifications
 Warning
 Caution
 Warning
Recommended Model
Fluke Model 5500A
Fluke 787 ProcessMeter
741,743, or 744 Process
Calibrator
Agilent 3458A
13
Ω at
Fluke 5440A-7002 Low
Thermal Test Leads
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