Atec Wallace-Tierman-65-120 - Manual

AN EXTRA MEASURE OF ACCURACY
All W&T Portable Pneumatic
Calibrators are subjected to rigo-
rous and extensive testing. Each
has to perform at better than the
rated accuracy to be accepted.
It’s accurate enough to double
as a shop standard.
Calibration traceable to NBS
Calibration is with primary stan-
dards which are directly trace-
able to the German National
Bureau of Standards (PTB).
DESIGN AND CONSTRUCTION
The Series 65-120 Portable Pneumatic Calibrator is a
pressure-vacuum test stand wholly contained in a
carrying case. The front panel accommodates the
precision pressure gauge, all pressure connections,
two air-regulator controls, and a selector valve. With
the selector valve, three different test pressures can
be applied individually to the gauge. A fourth selector
setting vents the gauge to atmosphere.
The precision pressure gauge has a Ni-Span C, cap-
sule-type pressure element which gives excellent
temperature stability and speed of response. An
almost frictionless mechanical linkage amplifies
capsule movement and transmits it to the pointer.
Although highly sensitive and accurate, the mecha-
nism is built to withstand the handling normally as-
sociated with on-site calibration of pneumatic instru-
mentation.
A filter on the air supply keeps oil and moisture out.
Two regulators apply known pressures to the devices
under test. The connection block has
1 /
8
-inch female-
pipe-threaded connections. Small gauges can be
threaded directly into the block; or as with larger
instruments, connected by flexible tubing.
The standard scale contains two sets of calibrations:
–100 to 0 to 850 inches of water and –3.6 to 0 to
30.6 psi.
Other ranges and units of calibration (from min.
0–4,5 psi to max. 0–100 psi) are available.
The Series 65-120 Pneumatic Calibrator provides high-degree accuracy
for on-site testing and calibration service. This versatile portable test
stand combines precision measurement and durable construction in a
compact unit that is capable of simulating, applying, holding, regulating
and measuring both pressures and vacuum. The dial, all pressure connec-
tions, and the controls are panel-mounted for easy access.
Technical Information
FEATURES:
• Accuracy 0.066% FS
• Scale length 45 inches
(1140 mm)
• Clear readout
• Versatile capabilities
• Calibration traceable to NBS
• Easy to use
• DKD calibration on request
• Dual scale calibration for
standard range
PUBLICATION
TI 650.504DE
1
Portable Pneumatic
Calibrator
Series 65-120
Wallace & Tiernan GmbH
Postfach 1563, D-89305 Günzburg, GERMANY
Street address: Auf der Weide 10,
D-89312 Günzburg, GERMANY
Tel.: (49) 8221-9040, Fax: (49) 8221-904203
a U.S. Filter Company
DIN EN ISO 9001 certificated
DKD-Calibrations
(German Calibration Service)
NEW ACCURACY
AND
EXTENTED RANGES
WITH SERIES 1500
HIGH PERFORMANCE
GAUGE LINE