SKC chek-mate 375 series Operating Instructions Manual
Flowmeter
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Also See for chek-mate 375 series:
- Operating instructions manual (12 pages) ,
- Quick manual (2 pages)
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Inlet
Low battery
indicator
LCD screen
On/off
button
Introduction
Description
The chek-mate
®
Flowmeter (Figure 1) is designed specifi cally for use with air sample pumps and is available in medium fl ow and
low fl ow models:
• Medium flow chek-mate Flowmeters with CalChek Cat. Nos. 375-0550N and 375-0550 have a flow measurement range of
0.5 to 5 L/min and provides CalChek capability. Volumetric accuracy is 1% of reading for 0.75 to 5 L/min and 2.5% of reading for
0.5 to 0.75 L/min. This model has a CalChek serial interface that enables direct communication with CalChek-ready pumps in the
chek-mate flow range for single-point (Single) and multiple-point (Full) automatic flow calibration.
• Low Flow chek-mate Flowmeters Cat. Nos. 375-00205N and 375-00205 have a flow measurement range of 20 to 500 ml/min.
Volumetric accuracy is 1% of reading for 50 to 500 ml/min and 2.5% of reading for 20 to 50 ml/min.
Checking Package Contents
See below to verify that you received all items associated with the Cat. No. ordered. If you are missing items, contact SKC
at 800-752-8472 (U.S. only) or 724-941-9701.
If You Ordered Cat. No.
Your Package Should Contain
375-0550N
Flowmeter with 9-volt alkaline battery and NIST-traceable calibration certifi cate
375-0550
Flowmeter with 9-volt alkaline battery and UKAS-traceable calibration certifi cate
375-00205N
Flowmeter with 9-volt alkaline battery and NIST-traceable calibration certifi cate
375-00205
Flowmeter with 9-volt alkaline battery and UKAS-traceable calibration certifi cate
Required Equipment
1/4-inch ID tubing
863 Valley View Road, Eighty Four, PA 15330 USA • Tel: 724-941-9701 • www.skcinc.com
Outlet
CalChek interface socket
(Cat. Nos. 375-0550N and
375-0550 only)
Front View
Figure 1. chek-mate Flowmeter Overview
www.skcinc.com
chek-mate Flowmeter
Operating Instructions
Battery
compartment
cover
Battery
Back View
Cat. No. 375 Series
Form 39013 Rev 1905
Page 1 of 6
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Table of Contents
Related Manuals for SKC chek-mate 375 series
Summary of Contents for SKC chek-mate 375 series
-
Page 1: Operating Instructions
Volumetric accuracy is 1% of reading for 50 to 500 ml/min and 2.5% of reading for 20 to 50 ml/min. Checking Package Contents See below to verify that you received all items associated with the Cat. No. ordered. If you are missing items, contact SKC at 800-752-8472 (U.S. only) or 724-941-9701. -
Page 2: Getting Started
• Avoid extended use of the chek-mate in areas with high levels of airborne particulates. If this cannot be avoided, use an external inlet fi lter with high collection effi ciency (i.e., one that collects the majority of all dust particles) and low back pressure. SKC does not supply this. - Page 3 Start the sample pump and observe the LCD on the fl owmeter until it achieves a steady value. The reading may vary around the steady value by up to ± 0.005 L/min on the medium fl ow model and ± 0.5 ml/min on the low fl ow model. If the fl ow is fl uctuating, there are two options for determining the average fl...
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Page 4: Maintenance
Replace the Battery • SKC recommends using quality alkaline batteries to ensure long battery life and prevent damage due to leaking battery electrolyte. A quality battery such as the Duracell Industrial model supplied with the chek-mate should provide as many as 30 hours of operation. -
Page 5: Accessories/Replacement Parts
To ensure that the SKC factory fl ow calibration is representative of how the chek-mate is actually used, the fl ow calibration is performed under vacuum. - Page 6 Appendix Performance Profi le Flow Measurement Medium fl ow: 0.5 to 5 L/min Range Low fl ow: 20 to 500 ml/min Airfl ow Display Medium fl ow: 0.001 L/min Resolution Low fl ow: 0.01 up to 100 ml/min and 0.1 above 100 ml/min Airfl...
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