Dwyer Instruments GFM2 | Gas flow meter - generaltechuae

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Dwyer GFM2 | Gas Mass Flow Meter | 2 relays, totalizer, 0-5 VDC or 4-20 mA

Name: Dwyer GFM2 | Gas Mass Flow Meter | 2 relays, totalizer, 0-5 VDC or 4-20 mA
Brand: Dwyer
SKU: GFM2
Availability: InStock

Part Number : GFM2

The Dwyer GFM2 is a gas mass flow meter for measuring flow rates of a wide range of gases, and it can be calibrated for different gases. It adds two relay outputs, a programmable totalizer showing the total gas quantity, and a user-selectable 0-5 VDC or 4-20 mA signal.

GFM2 accuracy ±1% FS with ±0.25% FS repeatability
Response of 2 seconds to within ±2% of actual flow
Compression fittings: 1/8" up to 10 L/min, 1/4" up to 50 L/min, 3/8" up to 100 L/min
Relays rated 1 A at 24 VDC; 11 to 26 VDC power supply
Rated to 500 psig (34.5 bar) and 0 to 50°C; optional 2 x 16 character LCD

Availability: low stock

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Specifications
Features
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Part Number	GFM2
Brand	Dwyer
Accuracy	±1% FS
Repeatability	±0.25% FS
Response Time	2 s to within ±2% of actual flow
Output	0-5 VDC (3000 Ω min. load) or 4-20 mA (500 Ω max. loop), user selectable
Relays	2, rated 1 A @ 24 VDC
Power Supply	11 to 26 VDC
Display	2 x 16 character LCD (optional)
Process Connection	1/8" compression ≤10 L/min; 1/4" ≤50 L/min; 3/8" ≤100 L/min
Wetted Materials	GFM2-X-X-A: anodized aluminium, brass, 316 SS, FKM O-rings; GFM2-X-X-S: 316 SS, FKM O-rings
Max Operating Pressure	500 psig (34.5 bar)
Operating Temperature	32 to 122°F (0 to 50°C)
Weight	1.05 lb (0.48 kg)

Uses a restrictor flow element in conjunction with a straight tube sensor to offer high repeatability of ±0.25% FS and accuracy of ±1% FS.
An optional 2x16 character LCD panel with internal conversion factors for up to 32 gases can show gas flow in 23 different technical units.
Simple communication and multi-drop capability of up to 256 units are made possible via digital RS-232 or RS-485 interfaces (RS-485 only).
Two user-programmable electromechanical SPDT relays with latch options and high and low gas flow alarms can be programmed using an easy-to-use interface.
Keeps track of internal or user-specific K-factors and calibration data for up to ten distinct gases.
Adjustment of the sensor zero offset automatically (by means of a local push button or digital interface).
Includes a traceable NIST certificate.
Tests for self-diagnosis.