User Manual
TRAQC-8
TRAQC-8 04/2017 EN Rev.4
page : 11
2.
Operating Instructions
2.1
Set up
Place the unit on a stable table.
•
Open the 4 (four) locks and take the lid of the case.
•
Check the calibrator for damages.
•
Plug the power supply cable in the right side of the unit.
•
Control the power supply indication before plug in.
2.2
Operating Instructions
The TRAQC-8 is a pressure calibrator with a maximum of 200 bar and is design for a so-called
"dead end" system. The calibrator includes a high pressure reducer which has to be fed by an
external pressure source of maximal 200 bar or by the internal gas bottles. Depending on the
range of the pressure sensor which is mentioned on the front side of the TRAQC-8, the range of
the reducer is selected. On the pressure outlet of the reducer are a pressure shut off valve and
a bleed valve for fine adjustment of the test pressure.
•
Close the “bottle shut off valve” by turning it fully clockwise.
•
Decrease the “reducer” by turning it fully counterclockwise.
•
Close the “pressure shut off valve” by turning it fully clockwise.
•
Open the “bleed valve” by turning it fully counterclockwi
se.
•
Connect the “test” coupling to the unit to be calibrated.
•
Close the “bleed valve” and open both the “pressure shut off valve” and “bottle shut off
valve”.
•
Slowly increase the pressure with the “reducer” until the maximum admissible pressure
for the unit under test is reached.
•
Close the “pressure shut off valve”, close the “bottle shut off valve” and decrease the
“reducer” to minimum.
•
Check with the TRAQC-8 if there is any leakage; this becomes apparent by an extreme
change of the test pressure.
•
Remove
the pressure from the system by opening the “bleed valve”(1).
•
Eliminate any leaks and repeat the test as described above until all leaks are eliminated.
•
Close the “bleed valve”.
•
Open both the “bottle shut off valve” and “pressure shut off valve”.
•
Increas
e the “reducer” to circa 110% of the desired test pressure. Than close the
“pressure shut off valve”.
•
For regulating the test pressure:
-
Slowly opening and closing the “pressure shut off valve” will result in a pressure
increase.
-Slowly opening and closin
g the “bleed valve” will result in a pressure decrease.
•
A measurement can be performed when the “bottle shut of valve”, “pressure shut off
valve”, the “bleed valve” are all closed.
•
Repeat the procedure as often as a new test pressure is desired. When all test pressures
have been generated repeat the following sequence for getting the system back to
atmospheric pressure:
-
Close the “bottle shut off valve”
-
Open the “bleed valve”
-
Decrease the “reducer” to the minimum.
-Open
the “pressure shut off
valve”.
-Disconnect the test hoses
The valves have a soft seat and a tight shut-off. It is not necessary to close them with
excess force.
