Additel 901B Low Pressure Test Pump
-6 to 6 psi (-0.4 to 0.4 bar)
Portable, only 3.5 lb
Isothermal bellows chamber for exceptional stability
Screw press resolution to 0.1 Pa (0.001 mbar)
Dual pressure module design
Hand-tight quick connectors, minimal maintenance
Overview
The Additel 901B is built for stable low pressure calibration. Instead of the usual check valve, it uses an isothermal bellows chamber that shields the trapped volume from ambient temperature changes, so the pressure does not wander when the room shifts or the pump is touched. The screw press adjusts with a resolution of 0.1 Pa (0.001 mbar), fine enough for draft range and low differential work. Hand-tight quick connectors keep gauge changes quick.
Available configurations. Process Connection: 1/4 BSP, 1/2 BSP, M20x1.5, 1/4 NPT, 1/2 NPT. Configuration: Pump only, Set (with accessories).
Base model ADT901B. Each configuration has its own Additel part number, shown as the SKU on your order.
Accessories
O-ring
Manual
Carrying case (901B-X-SETmodels only)
Additel 901B Low Pressure Test Pump
-6 to 6 psi (-0.4 to 0.4 bar)
Portable, only 3.5 lb
Isothermal bellows chamber for exceptional stability
Screw press resolution to 0.1 Pa (0.001 mbar)
Dual pressure module design
Hand-tight quick connectors, minimal maintenance
Overview
The Additel 901B is built for stable low pressure calibration. Instead of the usual check valve, it uses an isothermal bellows chamber that shields the trapped volume from ambient temperature changes, so the pressure does not wander when the room shifts or the pump is touched. The screw press adjusts with a resolution of 0.1 Pa (0.001 mbar), fine enough for draft range and low differential work. Hand-tight quick connectors keep gauge changes quick.
Available configurations. Process Connection: 1/4 BSP, 1/2 BSP, M20x1.5, 1/4 NPT, 1/2 NPT. Configuration: Pump only, Set (with accessories).
Base model ADT901B. Each configuration has its own Additel part number, shown as the SKU on your order.
Accessories
O-ring
Manual
Carrying case (901B-X-SETmodels only)
