Panametrics DF868 Ultrasonic Transit-Time Flow Meter

Panametrics DF868 Liquid Flowmeter

  • World's No.1 Clamp On Flow Meter Wide range of applications, pipe sizes & pipe materials. Supported by professionals.
  • Dual Channel Version Available Used for measurements in two separate pipes using one meter or for two path averaging on one pipe for maximum accuracy
  • MCERTS Certification Ideally suited to Wastewater applications
  • IN STOCK Next Day Delivery
Product Options


The DF868 is a Transit-Time flowmeter with MCERTS-certification and provides a non-invasive flow monitoring solution for permanent applications, with drift-free measurement in ultraclean and most "dirty" fluids. Fluids with some gas bubbles can be measured, along with entrained solids that previously required Doppler-style meters.

The DF868 ultrasonic liquid flowmeter uses economical non-intrusive flow measurement with hazardous area certification. Set up is simple, and suitable on a wide variety of pipe sizes or materials (including metal, plastic and concrete-lined pipes). There is a large, LCD backlit display which illustrates velocity, volumetric and energy flow rates, as well as totalized flow or trend data.

As an option, the DF868 can also come as dual-channel or dual-path models that can be user-configured. This means that it can be set up to measure flow in two separate pipes with one meter - making the DF868 practical, versatile and cost-effective. The DF868 is also highly accurate, particularly as two sets of transducers can be installed onto the same pipe. This has the effect of reducing flow profile distortions, flow swirl and cross flow. Special small-pipe clamping fixtures can be used, with miniature transducers, to facilitate flow measurements on pipes from 0.5-2 inches. You can also add up to 12 isolated 4-20mA outputs, up to 6 hermetically sealed or standard alarm relays, and up to 12 frequency / totalizer outputs.


The Panametrics DF868 Liquid Flowmeter is now MCERTS certified meeting the Environment Agency's performance requirements. View downloads for certificate.

Manufactured by: GE Panametrics
Model: Panametrics DF868 Liquid Flowmeter

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Water and wastewater (MCERTS)
Ultrapure water and liquids
Cooling and heating water
Petroleum products
Other liquids


Flow Range -40 to 40 ft/s (-12.2 to 12.2 m/s)
Typical Clamp-On Flow Accuracy - Pipe ID>6 in (150 mm): ±1% to 2% of reading
- Pipe ID<6 in (150 mm): ±2% to 5% of reading
Typical Wetted Flow Accuracy ±1% of reading
Typical Wetted Flow Accuracy

- 0.75 to 12 in (20 to 300 mm) with
TransPort PT878GC-01 electronics
- 4 to 24 in (100 to 610 mm) and larger with TransPort PT878GC-02 electronics

Pipe Sizes - Using clamp-on transducers: 0.5 to 300 in (12.7 mm to 7.6 m) and larger
- Using wetted transducers: 1 to 200 in (25.4 mm to 5 m) and larger
Pipe Wall Thickness

Up to 3 in (76.2 mm)

Pipe Materials

All metals and most plastics. Consult RS Hydro for concrete, composite materials, and highly corroded or lined pipes

Operating Temperature
-4°F to 131°F (-20°C to 55°C)
Clamp-On Transducers
Operating Temperature
Standard: -40°F to 302°F (-40°C to 150°C)
Optional: -328°F to 752°F (-200°C to 400°C)
Channels Standard: One channel
Optional: Two channels (for two pipes or two-path averaging)
Standard Inputs/ Outputs Two 0/4 to 20 mA isolated outputs, 550 W maximum load
Namur NE043 compliant
Power Supplies Standard: 100 to 130 VAC, 50/60 Hz or 200 to 265 VAC, 50/60 Hz
Optional: 12 to 28 VDC, ±5
Dimensions (h x w x d) 14.24 in x 11.4 in x 5.1 in
(362 mm x 290 mm x 130 mm)
Weight 11 lb (5 kg)


Related products



Yes, the ordering process is very easy. Orders can be made via purchase order or by credit/debit card. Once we have the paperwork we can delivery next day to any location in Europe. Provided with the equipment is a quick start guide, and if you need extra support, the technical support engineers can be contacted via phone call.
No, all of our flowmeters are competitively priced and rental is an ideal option for cutting costs to a fraction of a full priced new flowmeter.
No problem. The quick start guide is designed to make installing the flow meters a simple task. Everything you require for set up will be found in the peli-box supplied with the flowmeter.
Every flow meter is tested upon shipping and return as part of our ISO9001 procedure. Also, as part of this procedure, the flow meter is calibrated once a year. If a copy of the calibration certificate is needed let us know.
The flow meters typically provide an accuracy of ±1 to 2% of rate, so if you are measuring 100l/sec then the accuracy is between 98-102l/sec.
We are here to help. If the self-help and quick start guides do not help, then call one of our technical support engineers on +44 (0) 1527 882060. We have supplied and supported many clamp on rental installations throughout Europe.
First, contact us for a quote. If you are happy with the quote then send us a purchase order. Or alternatively call us with credit card details and fill out and send us a rental agreement form.
If the stock is permitting, and all paperwork is received by 12pm then flow meters can usually be available the next day.
The minimum hire period for flow meters is one week.
Once you have the meter you can rent it for as long as you need it. However, it would help if you can let us know that you wish to extend the rental period. Upon return the meter is off-hired and once checked and tested, an invoice will be issued to you. Also, if you extend your rental past a 4, 8 or 12 week rental threshold, then you are entitled to a discount.
You are only charged for the period of time for which you have the flowmeter. So, if a flowmeter is returned 3 days late you are only charged for 3 extra days, and each of these days is charged at one fifth of the weeks hire cost.
Normally, you will use your own courier but if you have any problems let us know and we can arrange a pick up the day after you notify us, but you will be charged for the carriage and this cost will be added to the invoice.
Without exception, all our flow meters are tested. If you need a 110v plug instead of the standard 230v plug let us know.
All of our standard transducers will do -40degC to +150degC, but this will depend on your application.
  • Liquid: below 50mm CFLP transducers are required, 50-1000mm CRS-402 transducers and 150-8000mm CRS-401 transducers. All the bits you need can be supplied, and delivered with the meter.
  • Gas: below 80mm CRS-402 is required, for 80-300mm the CRS-401/CRV-310 and for above 300mm the CRW-312 transducers are required.
  • High temperatures: For liquid we can measure +450degC for liquid and for gas/steam +250degC. But please consult RS Hydro.
Of course, we make a small surcharge for each set of transducers. Most applications only require one set, but on occasion some people may require two, for more diverse pipe sizes and applications.
As long as the pipe is relatively clean, coatings or paint is usually not a problem for clamp on flow meters but if the pipe is corroded or the paintwork has bubbled then a quick sanding down with sandpaper or a wire brush is recommended.
An ultrasonic wall thickness gauge, that measures to within 0.05mm, is provided as standard with all flow meter rental packages.
The screendump facility on the integrated dataloggers on all our flow meters, allows you to photograph any screen and download it to your pc.
After the equipment has been shipped, it is the responsibility of the hirer. However, in our experience it is rare that any of our flow meters are damaged. Our flow meters are tough, as well as accurate, and reliable.
We have hired more ultrasonic clamp on flow meters than any other company in Europe. We are now one of the world's largest distributors of GE Panametrics flow meters. We always review your application before hire so no unwanted surprises are encountered. Every effort has been made to make your flow meter hire and enjoyable experience: quick start guides to help you set up with ease, online videos for further help, rugged packaging for extra durability anywhere, and real flow engineers available for online/telephone support.