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chek-mate Flowmeter

The SKC chek-mate Flowmeter is our easy to use differential pressure flowmeter for calibrating air flow sample pumps at flow ranges between 0.50-5.0 L/min, 20-500 ml/min and 5.0-30.0 L/min. The chek-mate meets the accuracy requirements of MDHS 14/4, and other HSE sampling methods.

chek-mate is portable and can be used in any orientation
chek-mate is simple to use
chek-mate with AirChek 3000 sampling train
chek-mate with AirChek Touch sampling train
  • No moving parts
  • Can be used in any orientation
  • Built-in temperature and atmospheric pressure compensation
  • Short stabilisation time
  • Accuracy to 1% over the vast majority of the measuring range
  • Auto-shutoff to conserve battery
  • Compact, portable and lightweight
  • Available in medium flow, low flow and high flow models:
    • 0.5 to 5.0 L/min
    • 20 to 500 ml/min
    • 5.0 to 30.0 L/min
  • CalChek automatic flow calibration with specific SKC sample pumps (375-0550 and 375-50300 models only)
  • Easy to use:
    1. Connect sample train to the chek-mate
    2. Press the only button to turn the chek-mate on
    3. Wait for flow reading to stabilise to within 1-2 ml/min
    4. Adjust pump flow if necessary
    5. Turn off chek-mate

CalChek Interface

The 375-0550 incorporates a CalChek communication interface which enables automatic flow calibration of AirChek 3000 and AirChek TOUCH pumps. A CalChek communication cable, part number 375-200, is plugged into the CalChek socket on the side of the chek-mate, and the DataTrac interface socket on the AirChek 3000 pump or the charging cradle for AirChek TOUCH pumps. The CalChek function enables single point flow calibration of complete sample trains, and also full CalChek calibration, calibrating the pump across its entire operating range with no sample train connected. When performing a full CalChek calibration a pulsation dampener, part number 375-100, is required to be fitted between the chek-mate outlet and pump inlet ports.

High Flow chek-mate

Due to the nature of high flow diaphragm type sampling pumps the flow pulsation that they exhibit may affect the accuracy of the 375-50300 chek-mate. We are therefore recommending that the 375-50300 chek-mate is always used with a pulsation dampener (part number 375-150).

Model   375-00205    375-0550    375-50300
Flow Range    20 - 500 ml/min    0.5 - 5.0 L/min    5.0 - 30.0 L/min
Display Resolution    0 - 99.99 ml/min:   0.01 ml/min
100 to 500 ml/min: 0.1 ml/min
   0.001 L/min    0.01 L/min
Accuracy    50 to 500 ml/min: ±1% of
20 to 50 ml/min:  ±2.5% of reading
   0.75 - 5.0 L/min: ±1% of
0.5 - 0.75 L/min: ±2.5% of reading
   ±1% of
CalChek Interface Socket   No    Yes    Yes
Power Supply   
  • 9V alkaline battery (included)
  • Provides approximately 30 hours of operation
  • Automatic 15 minute power off timer
  • Low battery indication
Operating Temperature    0 to 40°C (32 to 104°F)
Operating Barometric Pressure    700 mbar to 1090 mbar (20.7" Hg to 32.2" Hg)
Operating Altitude    Sea level to approximately 3050m (10,000ft) above sea level
Overall Dimensions
(including hose tail)
   18 x 8.3 x 3.3 cm (7.1 x 3.3 x 1.3 ")
IP Rating    IP40
Weight    232 g (8.2 ounces)    236 g (8.3 ounces)    236 g (8.3 ounces)

CE Marked

Certified in accordance with ISO 17025

Description Part Number
chek-mate Flowmeter, 20 to 500 ml/min flow range, battery included 375-00205
chek-mate Flowmeter, 0.50 to 5 L/min flow range, battery included 375-0550
chek-mate Flowmeter, 5.0 to 30.0 L/min flow range, battery included 375-50300
chek-mate Accessories
Description Part Number
Pulsation Dampener, for use with 375-0550 375-100
Pulsation Dampener, for use with 375-50300 375-150
CalChek Interface Cable, for use with 375-0550 and 375-50300 375-200
Replacement 9V MN1604 Alkaline Battery P37500
chek-mate Flowmeter Brochure


chek-mate Manual