chek-mate Calibrator, 20 to 500 ml/min, with NIST Certification

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Part Number: 375-00205N

chek-mate Calibrator, 20 to 500 ml/min

chek-mate Calibrator, 20 to 500 ml/min, includes 9-volt alkaline battery and NIST 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 calibration.


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
Accuracy 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)


Overall Dimensions
(including hose tail)

7 x 3.3 x 1.3 in (17.8 x 8.4 x 3.3 cm)


Models below 9 ounces (255 grams)


CE Marked



  • Calibrator Type : Electronic
  • Calibrator Flow Measurement Range : 20 to 500 ml/min
  • CE Marked : Yes
  • Automatic Calibration Compatible : No

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.