The TE-PRO-CAL is an advanced low volume calibrator that can be used to calibrate low-volume air sampling equipment such as the TE-Wilbur low volume sampler, the BGI PQ200, Thermo Partisol and other low-volume instruments that operate at 16.67 lpm. The system utilizes a precision-machined venturi to generate a differential pressure proportional to the flow rate that is not affected by temperature variations or humidity. The calibrator is mounted directly to the sampler’s inlet downtube for easy use and quick calibration of field instrumentation. The calibrator is powered by 4 AA batteries. It is shipped with the calibrator, a NIST traceable calibration certificate, 4 batteries, filter temperature probe and rugged carrying case.
Low Volume Calibration System

Flow Rate Units: LPM or SLPM
Ambient Temperature Units: Celsius
Flow Rate: 5 – 20 SLPM
Ambient Temperature Range: -40 – 55°
Flow Rate Accuracy: 0.75%
Ambient Temperature Accuracy: ± 0.1 C
Barometric Pressure Units: mmHg
Temperature Probe Units: Celsius
Barometric Pressure Range: 400 – 800 mmHg
Temperature Probe Range: -40 – 55°
Barometric Pressure Accuracy: ± 3 mmHg
Temperature Probe Accuracy: ± 0.1 C
Relative Humidity Range: 0 – 100%
Operating Temperature Range -20 – 55°
Relative Humidity Accuracy: ± 1.5%