Page 19 - Pressure Calibration Brochure

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2000 PSI 148 BAR
TECH

TIPS

• Use a reference gauge with

better accuracy to meet test
uncertainty ratios over a

wider range of pressures.

• Forgo wrenches or PTFE
tape by using adapters to

it multiple sizes and types
of devices with leak tight

seals to 20,000 psi.

• Safety irst! Always use
ittings, tubing, and seals

with pressure ratings above
full scale of the instrument.
To perform the test:
• If possible use oil for better

lubrication.
STEP
The pressure gauge should be mounted in the same orientation
(vertical or horizontal) as in the process. An angle adapter such as the 1
• Use gas to improve

P5543 may be used.
cleanliness or a liquid-to-
liquid separator available

The reference pressure gauge (2700G) should be mounted such that the STEP
from Fluke.

display is easily seen.
2
• Hydraulic systems are
preferable to gas systems

for pressures above
For hydraulic comparators prime the luid with the priming pump, STEP
2000 psi due to safety
to remove any bubbles.
3
and ease of use.

Measurement points should be distributed uniformly over the calibration STEP
range. Conveniently source pressure with a manual pump up to 300 psi, 4

after that use an external pressure supply.

For gas comparators use the ine needle valve or ine adjustment screw STEP
press to precisely meter the pressure.
5

With hydraulic models use the screw press to source and ine adjust STEP
6
the pressure.

The source pressure can be adjusted until the device under test is
STEP
reading a nominal pressure or until the reference gauge reads the 7
nominal pressure.

Additional resources
Check out the 700G videos.
For more in depth information about

this application check out these videos
and application notes from Fluke.
700G Data Sheet.
Interpreting Speciications for Process Calibrators, Application Note

19