Features

No moving parts
Can be used in any orientation
Built-in temperature and atmospheric pressure compensation
Short stabilization 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 five-step operation:
Connect sample train to the chek-mate
Press the only button to turn the chek-mate on
Wait for flow reading to stabilise to within 1-2 ml/min
Easily adjust the pump flow rate according to the necessity
Turn off chek-mate

Specifications

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 reading 20 to 50 ml/min: ±2.5% of reading	0.75 – 5.0 L/min: ±1% of reading 0.5 – 0.75 L/min: ±2.5% of reading	±1% of reading
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)
Certification	CE Marked Certified in accordance with ISO 17025