CDI 5400 for 2″ – 8″ pipes

Price Range: $675 – $2,305

The CDI 5400 clamps onto a pipe, with two flow-sensing probes projecting into the pipe through 3/16-in. drilled holes. It seals directly to the pipe; no cutting or welding is required for installation. Because each flowmeter is made and calibrated for a specific size of pipe, the digital display indicates flow directly, with no setup or adjustment.





  • Easy to install
  • Display rotates to facilitate use on horizontal or vertical pipes
  • No moving parts
  • Weather resistant and surge protected
  • Milliamp output
  • Pulse output convertible to threshold output
  • User-configurable scaling, filtering and units of measure
  • Optional wired and wireless outputs for networking

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 sizes. 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.

Additional information

Number of Rings

1 Ring

Material Type

, ,

Nominal Pipe Sizes

2 in. – 8 in., 50 mm – 101 mm, DN50 – DN200


5 percent of reading plus 1 percent of range for flows from 10 percent to 100 percent of indicated range at air temperatures between 20 and 120 degrees Fahrenheit


Compressed Air, Nitrogen

Operating Pressure

200 psig maximum on Sch. 40 steel and on Type L Copper; consult CDI for other materials and higher pressures.

Input Power

250 mA at 24 Vdc

Output Resistance

600 Ohms max.

Exposed Materials

Stainless steel, gold, thermal epoxy and Viton (seal)

Ring Material



Four digit LED display

Response Time

One second to 63 percent of change in value at flows above 30 percent of range.


Model No Nominal Pipe Size Range (scfm) Price
5400-20C, 5400-20S 2 in. (DN50) 600 $675
5400-25C, 5400-25S 2.5 in. (DN65) 800 $885
5400-30C, 5400-30S 3.0 in. (DN80) 1200 $1045
5400-40C, 5400-40S 4.0 in. (DN100) 2000 $1,355
5400-50S 5.0 in. (DN125) 3000 $1,885
5400-60S 6.0 in. (DN150) 5000 $1,885
5400-80S 8.0 in. (DN200) 6000 $2,305
5400-50M 50 mm 600 $675
5400-63M 63 mm 800 $855
5400-76M 76 mm 1000 $1,045
5400-101M 101 mm 2000 $1,355

Note: Flowmeters for 3″ and 4″ copper have lower flow ranges and full scales than their steel counterparts.


Click the files below to download.

CDI 5000 Series Quickstart Guide

CDI 5400 Datasheet

CDI 5400 Instructions

CDI Flowmeter Ranges

CDI 5000 Series Wiring

CDI Rev3 Customization

CDI Units of Measure Explanation

View CDI 5400 Installation Video

Pressure Sensing Option


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