Ashcroft deadweight testers provide an easy means of precisely generating pressure an accuracy
Ashcroft deadweight
testers provide an easy means of precisely generating pressure to an
accuracy of 0.1% of reading. 1305 units are available for operating
ranges up to 10,000 psi. They are ideal in use of calibrating, setting,
testing, and repairing pressure measurement and control devices. Each
unit is traceable to the National Institute of Standards and Technology
assuring instrument accuracy.
These pressure systems are designed to be field portable. A single
carrying case holds the pressure generation pump as well as the
necessary tools and accessories. A second box contains the weights used
for pressure generation (10,000 units require 2 boxes of weights).
Ashcroft deadweight testers qualify as primary standards for pressure
calibration. The pump is a two-stage hydraulic pressure generator. A
built-in shuttle valve allows for rapid pressure increase at low
pressures. The rate of increase, at pump cycle, can be reduced at higher
pressures in order to minimize resistance. This is accomplished by
simply repositioning the two position shuttle valve. With the shuttle
valve in the high pressure position, increasing pressure even when near
the 10,000 psi upper limit can be quickly and easily accomplished.
Final, precise adjustment is accomplished through the use of an integral
vernier adjustment knob.
The unit is provided with two piston cylinder assemblies: A low pressure
piston for pressure ranges from 15 to 2000 psi and a high pressure unit
for pressures from 75 to 10,000 psi. The high pressure piston has an
area of 1/80th of a square inch while the low pressure piston has an
area of 1/16th of a square inch. Weights are provided for pressure
increments of 5, 10, 20, 25, 40, 50, 100, 200, and 500 psi (depending on
piston in use). An optional 1 psi incremental weight is also available.
Ashcroft testers can be used anywhere within their operational range
without any change in accuracy. The same weights are used with both
piston and cylinder assemblies.
The units are available for psi, bar, kg/cm2 and kPa ranges.
Each unit comes complete with a hand jack set (for removal of pointers
on gauges being calibrated), spare O-rings and all tools, accessories
and fittings required for normal use.
Features
Accuracy
of 0.1% of reading
Operating
pressure of 15 psi to 10,000 psi (100 kPa to 70,000 kPa)
Operating
media 1305D-SAE 20 weight automotive or machine oil 1305DH-
Phosphate based or glycol fluids
Traceable
to NIST
O-Ring
material 1305D-Buna-N (D series) 1305DH- Ethylene propylene
(DH series)
Stainless
steel piston and cylinder material
Non-metallic
die-cast zinc weight material
Reservoir
volume approximately 1.5 pints (0.7 liter)
CAT
NO.
MODEL
DEscRIPTION
AVAIL
PRICE
AS130200
1305D-10
PRECISION
DEAD WEIGHT TESTER
Yes
6,469,200
Low
Pressure Range:
15-200psi
High
Pressure Range:
75-1000psi
AS130201
1305D-20
PRECISION
DEAD WEIGHT TESTER
Yes
6,966,000
Low
Pressure Range:
15-400psi
High
Pressure Range:
75-2000psi
AS130202
1305D-30
PRECISION
DEAD WEIGHT TESTER
Yes
7,117,200
Low
Pressure Range:
15-600psi
High
Pressure Range:
75-3000psi
AS130203
1305D-50
PRECISION
DEAD WEIGHT TESTER
Yes
7,333,200
Low
Pressure Range:
15-1000psi
High
Pressure Range:
75-5000psi
AS130204
1305D-100
PRECISION
DEAD WEIGHT TESTER
Yes
8,985,600
Low
Pressure Range:
15-2000psi
High
Pressure Range:
75-10,000psi
번호
제목
작성자
작성일
평가점수
이 상품에 대한 사용후기가 아직 없습니다.
사용후기를 작성해 주시면 다른 분들께 많은 도움이 됩니다.
현재위치 : 
개
