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CDI 5400 Compressed Air Flow Meter

CDI 5400 Compressed Air Flow Meter

Quick Overview

The CDI 5400 series of compressed air flow meter are suitable for larger pipe diameters from 2" up to 8". The flow meters provide a local display of compressed air flows with 4-20mA and pulse outputs, plus the option of Modbus RTU outputs. The CDI 5400 flow meter clamps onto the pipe using a single mounting ring that contains both flow-sensing probe projecting into the pipe through 3/16-in. drilled holes. The meter seals directly to the pipe and therefore required no cutting or welding for installation. Each flow meter is made and calibrated for the specific size of pipe and does not require any setup or adjustment.
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The CDI 5400 is similar to the CDI 5200, except that it has its probes mounted side-by-side in a single ring, its display can rotate to accommodate pipe orientation, and it is built for larger pipe diameters. Like the 5200, it is a thermal mass flow meter in which one probe senses the air temperature and the other is maintained ten degrees above the air temperature. It has the same milliamp and pulse outputs, the same large, bright display, and optional wired and wireless outputs. The new wireless output makes central monitoring practical where it might not otherwise be considered.

The CDI 5400 is commonly used for monitoring of compressor-room output and distribution lines in medium to large-sized facilities. It is also used for point-of-use monitoring in industrial processes that use large amounts of compressed air.


  • Easy to install
  • No moving parts
  • Weather resistant and surge protected
  • Integral digital display for flow rate
  • 4-20mA and pulse outputs
  • No calibration or setup required
  • User-configurable scaling, filtering and units of measure.
  • Optional RS485 Modbus RTU comms for networking

Optional summing remote display unit with three modes:

a) Remote display with instantaneous flow rate
b) Summing display with reseting 24 hour flow total
c) Summing display for flow total with manual reset


Accuracy: 5% of RDG + 1% FSD at air temperatures from -7 to 49°C
Medias: Compressed air and nitrogen
Operating pressure: 200 psig maximum on Sch. 40 steel and Type L copper
Input power: 250mA at 24vDC
Materials exposed to measured fluid: Aluminium, Stainless steel, gold, thermal epoxy and Viton (seal)
Display: Four-digit LED display
Response time: One second to 63 percent of final value


Model Pipe Diameter Pipe Material SCFM Nm³/min (20°C) Nm³/Hr (20°C)
CDI-5400-20S 2" Sch. 40 Steel 600 16.99 1,019
CDI-5400-20C 2" Type L Copper 600 16.99 1,019
CDI-5400-25S 2½" Sch. 40 Steel 800 22.65 1,359
CDI-5400-25C 2½" Type L Copper 800 22.65 1,359
CDI-5400-30S 3" Sch. 40 Steel 1,200 33.98 2,039
CDI-5400-30C 3" Type L Copper 1,000 28.32 1,699
CDI-5400-40S 4" Sch. 40 Steel 2,000 56.63 3,398
CDI-5400-40C 4" Type L Copper 2,000 56.63 3,398
CDI-5400-50S 5" Sch. 40 Steel 3,000 84.95 5,097
CDI-5400-60S 6" Sch. 40 Steel 5,000 141.6 8,495
CDI-5400-60C 6" Type L Copper 4,000 113.3 6,796
CDI-5400-80S 8" Sch. 40 Steel 6,000 169.9 10,190
CDI-5400-50M 50mm Aluminium 600 16.99 1,019
CDI-5400-63M 63mm Aluminium 800 22.65 1,359
CDI-5400-76M 76mm Aluminium 1,000 28.32 1,699
CDI-5400-85M 85mm Aluminium 1,000 28.32 1,699
CDI-5400-101M 101mm Aluminium 2,000 56.63 3,398


Pressure Sensing OptionCDI 5400 PSO

The pressure-sensing (-PSO) option for the CDI 5200 flow meter allows plant managers to monitor pressure throughout an air distribution system along with flow. The pressure sensor is mounted next to the flow-sensing probes. It accesses pipe pressure through a cutout in the gasket that seals the ring to the pipe and there are no additional steps during installation. The pressure signal is provided as a second milliamp output. With this option, both milliamp outputs are non-isolated; they source current to be returned to the meter’s dc-connection. The display can be configured to show the pressure signal, and the pressure signal is also available through the optional wired and wireless serial outputs.


Accuracy: ±2psig Max, ±0.5psig @ 68F
Pressure Range: 0 to 145 psi Operating Range
Scaled 0-145psi = 4-20mA

Availability: In stock

Price range : £808.48 - £3,081.36

Price as configured: £808.48

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Price as configured: £808.48


Part Builder

Description       CDI 5400 Compressed Air Flow Meter, suitable for compressed air and Nitrogen. Unit comes with two Aluminium fixing rings, 4 digit LED digital display. Accuracy 5% of RDG +1% FSD, operating temperature .-7 to +49°C. Meters include a 24vDC mains supplied power supply with prongs suitable for UK, EU, USA and Australian sockets.

Components / Downloads

For further information, technical advice, or a quotation please call or email us. If you are not sure which product you need one of our technical sales advisors will be happy to discuss your application. We also accept company purchase orders by fax or post. Credit card orders can also be placed over the phone for any product.

CDI Ruggedised Compressed Air Flow Meter
CDI 5400
CDI 5400
Compressed air flow meter, for pipe sizes 2 inch to 6 inch , clamp on type, accuracy 5% of RDG +1% FSD, operating temperature 4-49 C. With 4-20mA, pulse outputs. Optional MODBUS RTU RS485 O/P
View FileDatasheet
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Calibration Certificate
Printed Manufacturers Calibration Certificate for CDI flow meters. Traceable to NIST standards.
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Drill guide for all 5200 and 6200 series flow meters.
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