Ametek Crystal Pressure WT Series Bedieningshandleiding - Pagina 4

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OPERATING INSTRUCTIONS

The WT Series is shipped with batteries installed, so it's ready to use. Press and hold the
(
)
ments. Release the
on/off
button when the WT Series indicates pressure.
The WT Series always resumes operation in the mode and the units of the pressure last used, and it does not automatically rezero when turned on.
Connect the WT Series to your system.
!
CAUTION: Never insert any object into the pressure connection! The sensor diaphragm is very thin and can be damaged or destroyed by solid or sharp
objects. Cleaning of the sensor must be done with appropriate solvents only.
!
WARNING: Severe injury or damage can occur through improper use of pressure instruments! Do not exceed recommended pressure limits of tubing
and fittings. Be certain all pressure connections are secured.
Most WT Series are intended for gauge pressure measurement. That is, they indicate the difference between applied pressure and ambient barometric pres-
(
)
sure. However, the
zero
button can be used to force a WT Series to read zero pressure at any applied pressure, up to the full scale rating of the gauge. The
factory default setting limits the maximum zero value to 20 PSI, but this limit can be changed with
Some WT Series are rated for absolute pressure. Absolute gauges indicate the difference between applied pressure and an internal vacuum reference. Abso-
lute pressure is always positive. For instance barometric pressure at sea level is on average about 14.7 PSI (approximately 100 kPa or 1 bar), so at sea level this
is the lowest expected pressure indication. However, absolute gauges can be "zeroed" (unless prevented by ConfigXP). After zeroing an absolute gauge it is
possible to indicate a negative or positive gauge pressure.
!
WARNING: This gauge can display zero pressure when connected to a source of pressure! Do not rely on the display indication before disconnecting—
it may not be indicating true pressure. Never disconnect pressure instrumentation without first relieving system pressure!
(
)
on/off
button. The WT Series will first test all LCD seg-
.
2
Overview
XP2i Operation Manual