Series DFM Digital Flow Meter
Multi-Parameter, Multi-Gas, Field Configurable
The Series DFM Digital Flow Meter is the industry leader in the measurement of mass and volumetric flow rates of process gases. Using the OLED/joystick interface, the flowmeter can measure up to 30 different gases. Simultaneous displays of mass flow, volumetric flow, pressure and temperature parameters promote applications in a variety of industries.
Product Applications
- Gas flow measurement
- Operating pumps and valves
- Process equipment
- Scientific and analytical
- Bioreactors and surface depositions
- Gas sampling
- General manufacturing
Models & Ordering
Specifications
- Service:
- Clean, non-corrosive gases compatible with wetted parts.
- Wetted Materials:
- 316 SS, 416 SS, high temperature polyamide, alumina ceramic, epoxy, silicone, glass, gold. FKM O-rings.
- Accuracy:
- ±(0.5% of reading + 0.2% FS).
- Repeatability:
- ±0.15% FS.
- Response Time:
- 10 ms.
- Output:
- 0-5 VDC, 0-10 VDC and 4-20 mA.
- Relay Rating:
- Programmable solid state relay.
- Max. Particulate Size:
- 20 microns.
- Temperature Limits:
- 14 to 140°F (-10 to 60°C).
- Power Supply:
- 9-26 VDC.
- Process Connections:
- 1/8" compression fitting for flow rates ≤ 10 L/min; 1/4" for ≤ 50 L/min; 3/8" for ≤ 100 L/min.
- Display:
- 2 x 16 character OLED (model selectable).
- Pressure Limits:
- 120 psig (8.27 bar).
- Leak Integrity:
- 1 x 10-9 sccs of helium.
- Weight:
- DFM-01/50: 0.85 lbs (0.4 kg); DFM-51/56: 1.15 lbs (0.52 kg).
- Agency Approvals:
- CE.
Features
- Quick (< 20ms) response time
- Multi-parameter functionality
- Multi-gas functionality
- Capable of storing up to 90 gases and 20 custom gas mixes
- Field configurable
- Modifiable outputs
- High, low or in-range alarms with preset action delay for mass flow, temperature and pressure
Accessories
Model Number | Description | Usually Ships* | Price | Code | Order | |
---|---|---|---|---|---|---|
GFM-110P | 110 V power supply. | Next Day | $59.50 | B | Order | |
GFM-220PE | 220 V power supply. | 3-4 Weeks | $95.50 | B | Order | |
GFM-CBL4 | 3 ft cable for 4-20 mA output. | 3-4 Weeks | $43.25 | B | Order | |
GFM-CBL5 | 3 ft cable for 0-5 VDC output. | 3-4 Weeks | $43.25 | B | Order |
Model Chart
DFM-XX-X-XXXX DFM DIGITAL MASS FLOWMETER 1ST SYMBOL (1ST X) RANGE 01 0-0.5 ML/MIN 02 0-1 ML/MIN 03 0-2 ML/MIN 04 0-2.5 ML/MIN 05 0-3 ML/MIN 06 0-4 ML/MIN 07 0-5 ML/MIN 08 0-6 ML/MIN 09 0-7 ML/MIN 10 0-8 ML/MIN 11 0-9 ML/MIN 12 0-10 ML/MIN 13 0-15 ML/MIN 14 0-20 ML/MIN 15 0-25 ML/MIN 16 0-30 ML/MIN 17 0-35 ML/MIN 18 0-40 ML/MIN 19 0-45 ML/MIN 20 0-50 ML/MIN 21 0-75 ML/MIN 22 0-100 ML/MIN 23 0-125 ML/MIN 24 0-150 ML/MIN 25 0-175 ML/MIN 26 0-200 ML/MIN 27 0-250 ML/MIN 28 0-300 ML/MIN 29 0-350 ML/MIN 30 0-400 ML/MIN 31 0-450 ML/MIN 32 0-500 ML/MIN 33 0-600 ML/MIN 34 0-700 ML/MIN 35 0-800 ML/MIN 36 0-900 ML/MIN 37 0-1000 ML/MIN 38 0-1.5 L/MIN 39 0-2 L/MIN 40 0-2.5 L/MIN 41 0-3 L/MIN 42 0-4 L/MIN 43 0-5 L/MIN 44 0-6 L/MIN 45 0-7 L/MIN 46 0-8 L/MIN 47 0-9 L/MIN 48 0-10 L/MIN 49 0-15 L/MIN 50 0-20 L/MIN 51 0-30 L/MIN 52 0-40 L/MIN 53 0-50 L/MIN 54 0-60 L/MIN 55 0-80 L/MIN 56 0-100 L/MIN 2ND SYMBOL (2ND X) BODY SIZE 005 VERY LOW FLOW 010 LOW FLOW 050 MEDIUM FLOW 100 HIGH FLOW 3RD SYMBOL (3RD X) SEAL MATERIAL V FLOUROELASTOMER (FKM) 4TH SYMBOL (4TH X) FITTINGS A 1/8" COMPRESSION (VERY LOW/LOW) B 1/4" COMPRESSION (MEDIUM) D 3/8" COMPRESSION (HIGH) 5TH SYMBOL (5TH X) DISPLAY N NO DISPLAY L LED DISPLAY 6TH SYMBOL (6TH X) OUTPUT SIGNAL A 0-5 VDC 7TH SYMBOL (7TH X) DIGITAL INTERFACE 2 RS232 (RS485 SELECTABLE) 3 RS232 WITH MODBUS (RS485 SELECTABLE)
Product Literature
Manuals
Catalog Pages
Product Data Sheet
Approvals
Drawings
Questions
- Question
- What is the k-factor?
- Answer
- The DFM/DFC have a built-in gas properties database for over 90 different gases and gas mixes. There is no need to use K-factors, which may have 5 to 10% error.
- Question
- What is the turndown ratio?
- Answer
- 200 to 1.
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