DFM Variable Area gas flowmeters are suitable for a wide variety of gases and are supplied pre-scaled to suit your application.

Suitable for vertical installation only, flow upwards.

DFM Range Features:

> 0.2-1500 NM3/Hr Air in 13 ranges
> 6 different overall lengths from 165-350mm
> Choice of tube materials depending upon operating temperature and pressure up to 100°C and 10 Bar
> Positive pipe 0-ring sealing requiring less tightening effort when installing
> Standard or magnetic floats (where alarms required) of identical mass ensure identical flow ranges when changing
> Optional bi-stable adjustable alarm on rear slide
> Optional 4-20 mA transmitter (ATEX EEx ia)

DFM Variable Area Gas Flow Meters

Sort by: SKU Product Price Default Result pages: 1 2 3   See details DFM165 3/8" 0.2 - 1 NM3/Hr (Air 1 Bar Abs 20 °C) SKU: 47516~GAS DFM165 3/8" 0.2 - 1 NM3/Hr (Air 1 Bar Abs 20 °C) Plastic Variable Area Meter 165mm Length See Options: Alarms / 4-20 mA Our price: UK£68.64 (excl. VAT) Quantity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Buy Now See details DFM165 3/8" 0.2 - 2.5 NM3/Hr (Air 1 Bar Abs 20 °C) SKU: 47517~GAS DFM165 3/8" 0.2 - 2.5 NM3/Hr (Air 1 Bar Abs 20 °C) Plastic Variable Area Meter 165mm Length See Options: Alarms / 4-20 mA Our price: UK£68.64 (excl. VAT) Quantity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Buy Now See details DFM165 3/8" 0.6 - 3.6 NM3/Hr (Air 1 Bar Abs 20 °C) SKU: 47518~GAS DFM165 3/8" 0.6 - 3.6 NM3/Hr (Air 1 Bar Abs 20 °C) Plastic Variable Area Meter 165mm Length See Options: Alarms / 4-20 mA Our price: UK£68.64 (excl. VAT) Quantity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Buy Now See details DFM165 3/8" 0.5 - 9 NM3/Hr (Air 1 Bar Abs 20 °C) SKU: 47519~GAS DFM165 3/8" 0.5 - 9 NM3/Hr (Air 1 Bar Abs 20 °C) Plastic Variable Area Meter 165mm Length See Options: Alarms / 4-20 mA Our price: UK£68.64 (excl. VAT) Quantity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Buy Now See details DFM170 1/2" 0.4 - 2.8 NM3/Hr (Air 1 Bar Abs 20 °C) SKU: 47520~GAS DFM170 1/2" 0.4 - 2.8 NM3/Hr (Air 1 Bar Abs 20 °C) Plastic Variable Area Meter 170mm Length See Options: Alarms / 4-20 mA Our price: UK£71.50 (excl. VAT) Quantity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Buy Now See details DFM170 1/2" 0.8 - 6.2 NM3/Hr (Air 1 Bar Abs 20 °C) SKU: 47521~GAS DFM170 1/2" 0.8 - 6.2 NM3/Hr (Air 1 Bar Abs 20 °C) Plastic Variable Area Meter 170mm Length See Options: Alarms / 4-20 mA Our price: UK£71.50 (excl. VAT) Quantity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Buy Now See details DFM170 1/2" 0.9 - 9.5 NM3/Hr (Air 1 Bar Abs 20 °C) SKU: 47522~GAS DFM170 1/2" 0.9 - 9.5 NM3/Hr (Air 1 Bar Abs 20 °C) Plastic Variable Area Meter 170mm Length See Options: Alarms / 4-20 mA Our price: UK£71.50 (excl. VAT) Quantity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Buy Now See details DFM170 1/2" 2 - 15 NM3/Hr (Air 1 Bar Abs 20 °C) SKU: 57523~GAS DFM170 1/2" 2 - 15 NM3/Hr (Air 1 Bar Abs 20 °C) Plastic Variable Area Meter 170mm Length See Options: Alarms / 4-20 mA Our price: UK£71.50 (excl. VAT) Quantity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Buy Now See details DFM185 3/4" 0.5 - 5 NM3/Hr (Air 1 Bar Abs 20 °C) SKU: 47524~GAS DFM185 3/4" 0.5 - 5 NM3/Hr (Air 1 Bar Abs 20 °C) Plastic Variable Area Meter 185mm Length See Options: Alarms / 4-20 mA Our price: UK£77.22 (excl. VAT) Quantity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Buy Now See details DFM185 3/4" 2 - 14 NM3/Hr (Air 1 Bar Abs 20 °C) SKU: 47525~GAS DFM185 3/4" 2 - 14 NM3/Hr (Air 1 Bar Abs 20 °C) Plastic Variable Area Meter 185mm Length See Options: Alarms / 4-20 mA Our price: UK£77.22 (excl. VAT) Quantity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Buy Now

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