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

Shipping Information

All shipping times are dependent on product availability at time of shipment.

Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability

COVID-19 Update: Due to high customer demand, lead time on some products may be up to two weeks. While this is a developing health situation, we are working continuously to take the necessary measures to ensure that the products you need are available with minimal interruption.

Build Your Custom Part. Use our Product Configurator

Model	Description	Usually Ships*	Price	Code	Order
DFM-22010-V-ALA2 Ships: Consult Factory Price: $1,145.00	Digital flow meter, 0-100 ml/min with LED display, 1/8" compression fittings, 0-5 VDC output, RS-232 digital interface, (RS-485)selectable.	Consult Factory*	$1,145.00	B	Order
DFM-26010-V-ALA2 Ships: Consult Factory Price: $1,145.00	Digital flow meter, 0-200 ml/min with LED display, 1/8" compression fittings, 0-5 VDC output, RS-232 digital interface, (RS-485)selectable.	Consult Factory*	$1,145.00	B	Order
DFM-32010-V-ALA2 Ships: Consult Factory Price: $1,145.00	Digital flow meter, 0-500 ml/min with LED display, 1/8" compression fittings, 0-5 VDC output, RS-232 digital interface, (RS-485)selectable.	Consult Factory*	$1,145.00	B	Order
DFM-37010-V-ALA2 Ships: Consult Factory Price: $1,145.00	Digital flow meter, 0-1000 ml/min with LED display, 1/8" compression fittings, 0-5 VDC output, RS-232 digital interface, (RS-485)selectable.	Consult Factory*	$1,145.00	B	Order
DFM-39010-V-ALA2 Ships: Consult Factory Price: $1,145.00	Digital flow meter, 0-2 l/min with LED display, 1/8" compression fittings, 0-5 VDC output, RS-232 digital interface, (RS-485)selectable.	Consult Factory*	$1,145.00	B	Order
DFM-43010-V-ALA2 Ships: Consult Factory Price: $1,145.00	Digital flow meter, 0-5 l/min with LED display, 1/8" compression fittings, 0-5 VDC output, RS-232 digital interface, (RS-485)selectable.	Consult Factory*	$1,145.00	B	Order
DFM-48010-V-ALA2 Ships: Same Day Price: $1,145.00	Digital flow meter, 0-10 l/min with LED display, 1/8" compression fittings, 0-5 VDC output, RS-232 digital interface, (RS-485)selectable.	Same Day*	$1,145.00	B	Order
DFM-56100-V-DLA2 Ships: Same Day Price: $1,456.00	Digital flow meter, 0-100 l/min with LED display, 3/8" compression fittings, 0-5 VDC output, RS-232 digital interface, (RS-485)selectable.	Same Day*	$1,456.00	B	Order

Can't find what you need? Build Your Custom Part. Use our Product Configurator

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.	Same 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

Instruction Manual

Catalog Pages

Series DFM Catalog Page

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.

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