Atec Tierman-65, Tierman-120 User Manual
AN EXTRA MEASURE OF ACCURACY
All W&T Portable Pneumatic
Calibrators are subjected to rigorous and extensive testing. Each
has to perform at bet
ter than the
rated accurac
y to be accepted.
It’s accurate enough to double
as a shop standard.
Calibration traceable to NBS
Calibration is with primary standards
which are directly traceable 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, capsule-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 mechanism is built to withstand the handling normally associated with on-site calibration of pneumatic instrumentation.
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 femalepipe-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 connections, 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
Features
2
Clear, Accurate Readout
Sharply defined graduations, a 45-inch (1140 mm) scale length
over two pointer revolutions, and a knife-edge pointer facilitate
precise readouts. All scale calibrations are individually plotted
and hand marked to produce a dial custom fitted to the pressure element and mechanism of that gauge.
Connections for different Pressure readouts
For gauge pressure:
test pressure is applied to the capsule through the appropriate
P connection; the case is open to atmosphere through S.
For differential pressure:
high test pressure is applied to the capsule through the appropriate P connection. Low test pressure is applied to the case
through S.
For absolute pressure:
test pressure is applied to the capsule through the appropriate
P connection and the case is continuously subjected to full
vacuum through S.
For vacuum:
the capsule is open to atmosphere through connection P; the
case is connected to test vacuum at S.
For positive and negative pressures:
test pressure is applied to the capsule through the appropriate
P connection and the case is open to atmosphere through S.
Engineered for perfomance
The gauge housing is heavy cast aluminum with a tempered
glass dial cover. A built-in pressure-relief valve has a dumping
capacity which protects the case against overpressures to 10
times the maximum pressure rating. A separate pressure-relief
valve protects the capsule mechanism. The gauge is mounted
inside the carrying case on rubber-padded shock mounts. The
carrying case is constructed of strong but lightweight molded
ABS that flexes to absorb shock from impact.
Compact, built for on-site service
The W&T Portable Pneumatic Calibrator weights only 20 lb
(9 kg) and is only slightly larger than a attache case. The easy
portability, simple set-up, and the versatile capabilities of this
unit extends its usefulness for service in the field. Its portability
saves the time and expense of shop calibration.
W&T (top) and competitive scales of the same range.
Diff
Input
Input
to be
Read
Regulated
Output 2
Regulated
Output 1
Air
supply
Filter
Reg. Reg
.
P1P2P3S
P
1
P
2
P
3
Vent
1
2
3
4
5
6
7
8
9
10
1 Compartment for accessories
2 Differential Input
3 Input to be read
4 Regulated output no. 2
5 Regulated output no. 1
6 Air supply connection
7 Regulators
8 Selector Valve
9 Schematic flow diagram
10 Shock-mounted gauge
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