Dwyer GFM Series Gas Mass Flow Meter & Controllers combine a straight tube sensor with a restrictor flow element to provide high accuracy and repeatability. Flow rates are virtually unaffected by temperature and pressure variations. Actual gas flow is displayed in engineering units on a 3-1/2 digit, 90° tiltable LCD readout. Units can be used with Series GFT Flow Totalizer for applications requiring totalization. Series GFM includes a NIST traceable certificate. Flow Range Up to 1000 L/min, Pressures Up to 1000 psi, NIST Traceable.
Note: These units require a cable, see GFM-CBL4 or GFM-CBL5, depending on your needs.
Dwyer GFM Series Features
- LCD Display
- Flow Range Up to 1000 L/min, Pressures Up to 1000 psi, NIST Traceable
- Actual gas flow is displayed in engineering units on a 3-1/2 digit, 90° tiltable LCD readout
|Service||Clean gases compatible with wetted parts.|
|Wetted Materials||GFM-1XXX: anodized aluminum, brass, 316 SS and fluoroelastomer o-rings; GFM-2XXX: 316 SS and fluoroelastomer o-rings.|
|Accuracy||±1% FS including linearity over 59 to 77°F (5 to 25°C) and 5 to 60 psia (0.34 to 4 bar); Series X143, X144, X145, ±1.5% FS.|
|Repeatability||±0.25% of FS.|
|Response Time||2 seconds to within ±2% of actual flow.|
|Output||Linear 0-5 VDC and 4-20 mA.|
|Maximum Particulate Size||5 microns.|
|Temperature Limits||32 to 122°F (0 to 50°C).|
|Power Supply||±12 VDC.|
|Process Connections||1/4″ compression fitting for flow rates ≤50 L/m; 3/8″ for 100 and 200 L/m; 1/2″ for 500 L/min; 3/4″ for 1000 L/min.|
|Pressure Limits||1000 psig (68.9 bar); Series GFM-X143, X144, X145, 500 psig (34.5 bar).|
|Leak Integrity||1 x 10-9 sccs of Helium.|
|Display||90° tiltable, 3-1/2 digit.|
Download Data Sheet: Series GFM Gas Mass Flow Meter & Controllers
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