Additel Low Pressure Calibration Pumps

Additel low pressure test pumps are hand operated pneumatic test pumps that can generate pressures from -0.4 bar to 0.4 bar (ADT 901) or 95% vacuum to 4 bar (ADT 912A) . Fine pressure adjustments, with a resolution of up to 0.001 mbar, can be made with the precision screw press. The ADT 901 and ADT 912A are ideal comparison test pumps for low pressure applications. The ADT 901 and ADT 912A maintain remarkable stability by mitigating the effects of temperature changes via an isothermal bellows chamber and by not including a check valve. 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.