chek-mate Flowmeter, 5 to 30 L/min, with NIST Standard Traceable Calibration Certificate

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Part Number: 375-50300N
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chek-mate Flowmeter, 5 to 30 L/min, with NIST Standard Traceable Calibration Overview

High Flow chek-mate Flowmeter with CalChek, 5 to 30 L/min, includes a 9-volt alkaline battery and NIST standard traceable calibration certificate

The Proof is in the Performance! With a volumetric accuracy of 1% of reading, chek-mate® is the smart choice for air sampling pump flow rate verification! Now available with CalChek capability for direct communication to CalChek-ready pumps to automatically verify flow at a single flow point or calibrate across a range of flows.

Performance Profile

Flow Measurement Range

Low Flow Chek-mate:
20 to 500 ml/min (volumetric)

Medium Flow Chek-mate:
500 to 5000 ml/min (volumetric)

High Flow Chek-mate:
5 to 30 L/min

Display Resolution 0.001 L/min

Low Flow Chek-mate:
20-50 ml/min ± 2.5% of reading
50-500 ml/min ± 1% of reading

Medium Flow Chek-mate:
500-750 ml/min ± 2.5% of reading
750 to 5000 ml/min ± 1% of reading

High Flow Chek-mate:
5 to 30 L/min ± 1% of reading


9-V alkaline primary (disposable) PP3 / 6LR61 / 1604A or equivalent, or
8.4V NiMH secondary (rechargeable) PP3 / 6HR61 / 8.4H5 or equivalent

Automatic power off timer – 15 minutes

Operating Temperature Range  32 to 104 F (0 to 40 C)
Operating Barometric Pressure 700 mbar to 1090 mbar (20.7 inch Hg to 32.2 inch Hg)
Operating Altitude Sea level to approximately 10,000 ft (3050 m) above sea level
IP Rating (enclosure)  IP40
Overall Dimensions
(including hose tail)
7 x 3.3 x 1.3 in (17.8 x 8.4 x 3.3 cm)
Weight Models below 9 ounces (255 grams)
Certification  CE Marked
  • Calibrator Type : Electronic
  • Calibrator Flow Measurement Range : 5 to 30 L/min
  • CE Marked : Yes
  • Automatic Calibration Compatible : Yes

Chek Mate Sample Train

How chek-mate Works
The SKC chek-mate calibrator is a highly reliable orifice-type airflow meter that incorporates sensors to measure pressure drop across a fixed orifice. Sensors automatically correct for changes in air temperature and atmospheric pressure to provide accurate volumetric flow rate readings. Volumetric accuracy is 1% of reading and highly repeatable.