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Ultra-low Pressure Calibration Pumps

Ultra-low pressure calibration pumps from Additel, including hand-held and portable pressure calibrators, and low pressure test pumps, provide an
accurate, reliable, and economic solution for a wide range of pressure applications.

Additel ADT 760-LLP - Automatic Handheld Pressure Calibrator

Additel ADT 760-LLP Automatic Handheld Pressure Calibrator is designed for low pressure calibration and comes with a built-in pressure module to ±30 inH2O (±75 mbar) and provides an accuracy to 0.05%FS (see ordering information for configurations with the option of the ADT760 and a module of your choice). Additional internal pressure modules (ADT 155 series) are available and provide a variety of ranges down to ±0.25 inH2O (±0.62 mbar). The accuracy of 0.05%FS and control stability 0.005%FS is based on the internal module’s span. Measurements can be made in gauge or differential mode.

  • Fully automatic calibrator with built-in pump and controller
  • Switchable internal pressure modules for expandable ranges
  • Accuracy (1 year) of 0.02%FS
  • External pressure modules available (measure only)
  • Less than 4 lbs (1.8 kg) for handheld operation
  • Source pressure, measure pressure and electrical
  • 4 channels
  • Optional HART communications
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Additel ADT 761A -LLP - Fully Automated Portable Calibrator

Additel ADT 761A-LLP Fully Automated Portable Calibrator with a built-in high performance electronic pump and precision pressure controller, provides a turn-key solution for calibration of gauges, transmitters, and switches both in the field and in the laboratory.

  • Pressure ranges as low as ±0.62 mbar to 2.5 bar
  • Pressure control to 0.003%
  • Accuracy 0.02 to 0.05% FS
  • Integral pressure generator/controller
  • Dual range pressure modules
  • Built-in filter and liquid trap with venting system
  • Measures and sources electrical signals
  • Automated switch test
  • 24 Vdc power supply
  • HART communications
  • Documenting and logging
  • External pressure modules and manifold available
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Additel ADT 901 - Low Pressure Calibration Test Pump

Additel ADT 901 Low Pressure Calibration 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 901 is a very stable low pressure calibrator.

  • Generated pressure range -0.4 bar to +0.4 bar
  • Insulated isothermal chamber for greater stability
  • Specially designed screw for fine adjustment
  • Hand-tight quick connectors (no need for PTFE tape or spanners required)
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Additel ADT 912 - Low Pressure Calibration Test Pump

Additel ADT 912 Pneumatic Pressure Calibration Test Pump is a hand operated pressure pump designed to generate pressure from 95% vacuum to 60psi (4bar). A high-quality screw press is designed for fine pressure adjustment, with an adjustment resolution up to 0.1 Pa (0.001 mbar).

  • Generated pressure range -0.95 bar to +4 bar
  • Portable only 6.2 kg
  • Insulated isothermal chamber for greater stability
  • Minimal maintenance
  • Hand-tight quick connectors (no need for PTFE tape or spanners)
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Contact Chamois Metrology

Registered Office
Chamois Metrology Ltd,
Unit 8, The Centre, Holywell Business Park,
Northfield Road, Southam, Warwickshire CV47 0FP
Telephone +44 (0)1926 812066
Email info@chamois.net


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