Monitoring Our Precious Resource


Control Electronics model CPS-460DH Ultrasonic Doppler Flowmeter is a non-contacting, non-intrusive system that continuously monitors the flow in full pipes with at least 70 ppm suspended solids or air bubbles, indicating flow rate, totalized flow and many other variables. The system has 2 independent 4-20 mA analog outputs, 4 control relays and 1 sampler pulse relay, all programmable. The sensors may be mounted on any pipe size from 1.0” to 50”.  A 200 day time stamped data logging provides 24 hour summary of flow rate, total flow for day, number of pump cycles with run time and more.

CPS-460DH / 460DX Ultrasonic Doppler Flowmeter

Note: Fiberglass enclosure shown has been updated to an ABS plastic enclosure.

The US460DH Sensor is a dual-head arrangement with 25 feet of coaxial cable.  The PVC sensors are easily mounted to the outside of the pipe using the supplied Silicone grease ( coupling paste ) and user supplied stainless steel hose clamp.  

Typical sensor mounting

The Model CPS-460R allows for remote monitoring of up to 1000 feet using an inexpensive two twisted pair shielded interconnect cable.  The Ultrasonic transmit and receiver card is located at the measuring site in a NEMA 4X enclosure.

Variables Displayed On Backlit Digital LCD Display

 ( User Selectable )

1]  GPM / Totalizer  2]  MGD / Totalizer  3] Velocity in FPS / GPM 

 4] Measured Average Frequency / Noise Filter Setting

5]   Flow % / Signal Strength

Metric Equivalents

6]  LPM / Total liters  7] Cm/h / Total Liters  8]   Velocity m/s / LPM   9] Velocity m/s / Cm/h; 


Monitoring and Controlling:

 - Wet Well Pump Stations

 - Influent in Sewage Treatment Plants


 - Belt Press Feeds

 - Waste Activated Sludge

 - Valve Positioning

 - Pump Speeds

 - Industrial Process



 - Quick, Easy, Menu Driven Programming

 - Four Control Relays for Alarms, Pumps etc.

 - One Pulse Relay for Sampler or Remote Counter

 - 200 Day Data Logging of Daily Totals and Flow  


 - Programmable noise filter

 - Two programmable 4-20 Ma outputs

 - NEMA 4X, IP65 Rated ABS Plastic Enclosure With

   Clear Hinged cover

Data Logging

The CPS-460 automatically logs daily flow for the past 200 days with auto wrap around. It will record the date, daily average GPM flow rate with the min / max rate, time stamped.  Total flows for the day and pump cycles will also be logged.  The logging sample rate is programmable from 0-99 minutes in 1 minute increments.  All data may be viewed at the meter or downloaded using any standard communication package.  

A time stamped EVENT list is also provided to record actions the flowmeter has made such as power lost, power ON, unit programmed, relays ON/OFF etc.  All data is preformatted and can be downloaded to a PC.

For Programming Meter, RESETing Meter and Trouble Shooting go to SUPPORT.


Power:              120/220 VAC, ±15%, 50/60 Hz @ 15 watts max. 

Temperature:    30°F to 120°F

Display:             2 x 20 character, alphanumeric LCD with LED backlight

Totalizer:           8 digit accumulative with programmable multiplier;         

                         x1, x10, x100, x1000

Outputs:           Two independent 4-20 mA isolated into 1000 ohm load      

                         each, ±1.0% of full scale.  

                         RS-232 terminal ( USB with adapter ), RJ-11 modular jack,

                         4  alarm control relays and 1 Sample Pulse relay, all

                         programmable. Relay contacts SPDT 5A/250 VAC

Flow Range*:    0.5 to 25.0 feet per second (FPS)

Sensitivity**:     Minimum 70 ppm suspended solids and/or entrained gas 

                         or air bubbles

Resolution:      0.01 FPS, 0.01 GPM

Accuracy***:    ± 0.5% of received signal

Memory:           Flash and non-volatile RAM ( 3 V battery backup )

Data Log:         200 day flow summary of date, daily avg. GPM, Total 

                        pump run time, Total pump cycles, total gallons pumped    

                        Time Stamped avg. GPM flow rate with programmable log

                        rate of 00-99 minutes  

                        EVENT list time stamped ( view by down load only ) using 

                        any standard communication software

*     Flow velocities of approximately less than 1.0 FPS (±0.5) not 

       recommended ( This is transition from turbulent to laminar flow - 

       calibrations different )

**   Application dependent - velocity / pipe may necessitate higher ppm

***  Received signal is application dependent.  Field / application conditions     

      may affect apparent accuracy

Note: CPS-460DX system does not come with relay outputs or data logging

CPS-460DH / 460DX Doppler Flowmeter Specifications          12/22

Sensor ( Dual-Head )

Material:             PVC Housing, Epoxy

Fréquence.:       640 kHz.

Temperature:    -40°F to 160°F exposure

Cable:                25 foot corrosion resistant coax, 50 feet max.

Dimensions:       1.5”W x 2.0”L x 1.0”H ( sensor heads only )

Mounting:           Recommend stainless steel hose clamp with silicone grease

Rating:               Sensor is explosion proof, corrosion resistant, immersible

Type Pipes:        Steel, PVC, Cast Iron, Most FRP and some lined pipes


Material:            ABS Plastic with clear hinged Polycarbonate cover, stainless steel hinges  

                          and  mounting hardware

Rating:              NEMA 4X, IP65, Dust-Tight, Water-Tight, Corrosion Resistant, CSA / UL 


Dimensions:      10.65” H x 6.85” W x5.55” D

Mounting:          6.1” x 11.6”


Additional Manuals; 120 VAC, 6 foot power cord installed; additional 4 oz. tube Silicone grease


The CPS-460DH and 460DX units are pretested and inspected before shipping.  Warranty is against defects in parts and workmanship for a period of one (1) year from ship date.

Specifications and Design are subject to change without notice.  

These specifications supersede all other published specifications.

Made in USA

© Control Electronics Inc., 2020

   Designing / Manufacturing Since 1980