The 4146 Primary Flow Calibrator is a small, portable unit that runs on alkaline batteries for checking the flow of sampling pumps and other devices. It has a temperature compensation and pressure correction system to calculate the volumetric flow rate accurately within 2% of the reading. Volumetric flow rate is displayed continuously, making real-time pump adjustment, calibration, and periodic flow checks quick and easy. The 4146 calibrator is an ideal high precision element to verify volumetric flows in the range of 0.01-20 L/min. The Primary Calibrator 4146 comes with a NIST traceable calibration certificate and is available as a complete kit that includes a battery pack, tubing kit, carry case and user guide. It is ideal for indoor air quality, epidemiology health studies, and field services.

  • NIST traceable 0.01-20 L/min volumetric flow rate primary calibrator
  • Accuracy of +/- 2% of reading or 0.005 LPM
  • LCD screen that shows in real time the volumetric flow in real time
  • Compact and lightweight
  • Operation by alkaline batteries