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Additel 901B

Key Features

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The 901B Low Pressure Test Pump is a hand operated pressure pump designed to generate pressures from -6 psi (-0.4 bar) to 6 psi (0.4 bar). A high-quality screw press is designed for fine pressure adjustment, with an adjustment resolution up to 0.1 Pa (0.001 mbar). The 901B is a very stable low pressure calibrator. It makes use of an isothermal bellows chamber which is designed for reducing the possible effects of environmental temperature change. Most pumps make use of a check valve (non-returning valve) and are not well insulated which will cause large fluctuations in pressure with a change in ambient temperature or when the unit is touched. The 901B does not use a check valve and is remarkably stable. Two hand-tight connectors installed on the pump allow easy connecting and disconnecting to the test pump without the need for PTFE tape or wrenches. The 901B is an ideal comparison test pump for low pressure applications.

Portable: Only 3.5 lb (1.6 kg)


Adjustment Resolution
0.1Pa (0.001 mbar); Specially designed screw press
for fine pressure adjustment.


Great Stability
Isothermal chamber: the pressure chamber is
insulated to reduce the influence from environmental
temperature changes.
Specially designed bellows minimize leakage to
guarantee excellent stability.


Durable and Minimal Maintenance
Without non-returning valve that is usually used on
troublesome hand pump.


Easy-to-use
Pressure could be set and adjusted precisely and
quickly through a simple turn of the handle.


Hand-tight Quick Connectors
Allows easy connecting and disconnecting to the test
pump without the need for PTFE tape or wrenches.

Specifications
Media Air
Generated Pressure Range 6 psi (0.4 bar) vacuum to 6 psi (0.4 bar) positive pressure.
Adjustment Resolution 0.1 Pa (0.001 mbar).
Material Ram/adapters: SS
Body: SS/aluminum
Seals: Buna-N
Connection Hand-tight connectors for both test gauge and reference gauge.
Test Gauge Connection: 1/4NPT female, 1/4BSP female, or M20X1.5 female
Reference Gauge Connection: 1/4NPT female, 1/4BSP female, or M20X1.5 female
Dimensions Height: 5.7'' (145mm)
Base: 9.65'' (245 mm) x 6.50'' (165mm)
Weight 3.5 lb (1.6 kg)
Warranty 1 year

Accessories Included
O-ring: 20 pcs
Manual: 1 pc
Carrying Case (901B-X-SET models only)

 

Optional Accessories
Model Number Description
ADT901B-X-KIT Test kit for ADT901B (barb fitting, connection hoses, and adapters). X=connection type e.g. N-1/4NPTM, N2-1/2NPTM, B-1/4BSPM, B2-1/2BSPM, M-M20X1.5M.
ADT102 Adapters and fittings, 1/4NPT male to various male and female connection (25 pcs).
ADT103 Adapters and fittings, 1/4NPT (1/2NPT, 1/4BSP, 1/2BSP, or M20X1.5) male to various female hand-tight quick connectors (10 pcs).
9901-901 Carrying Case for one ADT901B pump and two ADT681 gauges or ADT672 calibrators
ADT901B-MK Maintenance kit for Additel 901B pump
9240 Differential pressure gauge holder
 

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Additel 901B