Panametrics XMT868i Transit Time Flow Meter

Panametrics XMT868i Transit Time Flowmeter

  • Complete Ultrasonic Flow Metering System Non-intrusive measurement of flow on a range of applications from pure liquids to difficult gas-solid-liquid mixtures
  • Simple Setup, Installation And Maintenance Requires minimal maintenance and provides long-term, drift-free operation
  • Dual Channel Measurement Has the option of a second channel which allows flow measurement in two pipes or flow measurement at two points in the same pipe
Product Options


The XMT868i flow transmitter is a Transit Time flow meter, making it perfect for measuring flow in a range of applications, from pure liquids to even difficult gas-solid-liquid mixtures, which previously could only be handled by Doppler flow meters.

The XMT868i transit time flow meter also has the option of a second channel which allows flow measurement in two pipes, or flow measurement at two points on the same pipe. The second channel can also be configured at one point, for dual path measurement, to offer maximum accuracy. The flow transmitter can be used with wetted or clamp-on transducers, to offer either maximum accuracy or flexibility and convenience for the user. A range of pipe sizes can be worked on from 1/2" to 200" diameter pipes, as the transducers, flowcells are available in standard and custom configurations.

Features and Benefits

  • Pipe range 1/2" to 200" (1.27cm to 5.1m)
  • Flow range -40 to 40ft/s (-12.2 to 12.2m/s)
  • Accuracy (wetted transducers) better than 1% of reading with +/-0.2% repeatability
  • Accuracy (clamp-on transducers) better than 2% of reading with +/-0.5% repeatability
  • Single and dual channel options available
  • Optional data logging capabilities
  • Weather / explosion proof housing
  • Low power consumption
  • Six button keypad
  • Large integral display
  • Simple meter and transducer installation and set up
  • Velocity, volumetric and totalised flow
  • Economical non-intrusive flow measurement
  • Suitable for use in hazardous locations

Manufactured by: GE Panametrics
Model: Panametrics XMT868i Transit Time Flowmeter

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Water and wastewater
Sewage treatment
Lubricating oils
Liquified natural gas (LNG)
Hydrocarbon liquids
Other liquids
Hazardous Area (ATEX)


Operation and Performance
Fluid Types Acoustically conductive fluids, including most clean liquids, and many liquids with entrained solids or gas bubbles. Maximum void fraction depends on transducer, interrogation carrier frequency, path length and pipe configuration.
Pipe Sizes - Clamp-on transducers: 0.5 in to 300 in (12.7 mm to 7.6 m) and larger
- Wetted transducers: 1 in to 200 in (25.4 mm to 5 m) and larger
Pipe Wall Thickness All metals and most plastics. Consult RS Hydro for concrete, composite materials, and highly corroded or lined pipes.
Flow Accuracy (Velocity) ±0.5% of reading (achievable with process calibration)
Typical Clamp-On Flow Accuracy (Velocity) - 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 (Velocity) ±1% of reading
Accuracy depends on pipe size, installation and whether measurement is one-path or two-path.
Repeatability ±0.1% to 0.3% of reading
Range (Bidirectional) -40 to 40 ft/s (-12.2 to 12.2 m/s)
Rangeability (Overall) 400:1
Specifications assume a fully developed flow profile (typically 10 diameters upstream and 5 diameters downstream of straight pipe run) and flow velocity greater than 1 ft/s (0.3 m/s).
Flow Measurement Patented Correlation Transit-Time™ mode
Enclosures - Standard: Epoxy-coated aluminum weatherproof Type 4X/IP66 Class I, Divison 1, Groups B, C & D; Class II, Groups E, F & G; Class III Flameproof II 2 GD EEx d IIC T5/T6
- Optional: Stainless steel
Dimensions Standard: Weight 10 lb (4.5 kg), size (h x d) 8.2 in x 6.6 in (208 mm x 168 mm)
Channels - Standard: One channel
- Optional: Two channels (for two pipes or two-path averaging)
Display Optional: two-line x 16-character backlit LCD display, configurable to display up to four measurement parameters in sequence
Keypad Built-in infrared, six-button keypad, for full functionality operation
Power Supplies - Standard: 90-260 VAC
- Optional: 12 to 28 VDC, ± 5%
Power Consumption 20W maximum
Operating Temperature -40°F to 140°F (-40°C to +60°C)
Storage Temperature -67°F to 167°F (-55°C to 75°C)
Standard Inputs/Outputs Two 0/4 to 20 mA isolated outputs, 600 S maximum load Namur NE043 compliant
Optional Inputs/Outputs All analog and digital I/O are available in specific combinations. Consult GE for available option cards.
- Two additional 0/4 to 20 mA isolated outputs, 1000 W maximum load
- Two 4 to 20 mA isolated inputs, 24-VDC loop power
- Two or four isolated, three-wire RTD (temperature) inputs, -148°F to 662°F (-100°C to 350°C), 100 S platinum
- Two or four pulse or frequency outputs, optically isolated, 3A maximum, 100 VDC maximum, 1W maximum, from DC to 10 kHz maximum
- Alarm relays
Digital Interfaces - Standard: RS232
- Optional: RS485 (multiuser)
- Optional: HART® protocol
- Optional: Modbus® protocol
- Optional: Foundation Fieldbus®
- Optional: OPC server
- Optional: Ethernet
Data Logging - Standard: None
- Optional: Memory capacity (linear and/or circular type) to log up to 150,000 flow data points
European Compliance System complies with EMC Directive 89/336/EEC, 73/23/ EEC LVD (Installation Category II, Pollution Degree 2) and transducers comply with PED 97/23/EC for DN<25



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.