Panametrics PT878GC

  • Versatile The PT878GC is suitable for a wide range of applications, pipe sizes and pipe (materials)
  • Ideal for Natural Gas, Compressed Air, Nitrogen, Steam and more... Installed within 15 minutes
  • Available to Rent Next Day Next day delivery on the PT878GC is available to mainland UK when rental paperwork is received by 12 midday (stock permitting).
  • Supported by engineers with proven field experience.
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The Panametrics PT878GC clamp-on ultrasonic gas flow meter is a portable flow meter used to measure natural gas, compressed air, inert gas or any compressed gas application. The PT878GC can not only measure gas flow rates, but can also record and log data internally and then download it to a PC.

  • For pipes 6 in (150 mm) and smaller: ±2% to 5% of reading typical; For pipes over 6 in (150 mm): ±1% to 2% of reading typical
  • Pipe Sizes: 20-610mm
  • 8-hour battery life
  • -20°C to 55°C (-4°F to 131°F) operating temperature range

The PT878GC gas flowmeter is a compact transit time (time of flight) portable flow meter suitable for a wide range of non-invasive gas flow measurement applications. The portable gas flow meter is extremely compact, contains a rechargeable battery and has a universal power adaptor. Prior to the PT878GC, clamp on flowmeters could not measure gas within metal pipes. However, the sophisticated signal processing and technology of the PT878GC means that clamp on flow metering can be used to measure gases at low and high pressure in metal, non-ferrous and plastic pipes.

The Panametrics PT878GC gas flowmeter can be used to measure the flow of almost any gas including natural gas, oxygen, argon, hydrogen, nitrogen, CO2, methane, ambient air and compressed air. The greatest advantage of the PT878GC is that it can be used in without any modification to the existing pipework. Measuring erosive, corrosive, toxic, high-purity or sterile gases with a non-invasive flow meter is an obvious advantage as no modifications are required and installation costs are significantly reduced. The meter could even be moved to another location at a later date to measure a completely different pipe size and gas!

The PT878GC can log 100,000 data points and download them via its infrared port (no cables involved).

The meter housing weighs in at 1.36kg and is IP67 rated. A wide range of transducers and clamping fixtures are available for sale or hire.

Manufactured by: Panametrics
Model: Panametrics PT878GC

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Natural gas
Compressed air
Fuel gases
Corrosive gases
Erosive gases
Toxic gases
High-purity gases
Air separation gases


Operation and performance
Fluid types Acoustically conductive gases with minimum pressure requirements. See installation requirements table.
Pipe size ranges
  • 0.75 in to 12 in (20 mm to 300 mm) with TransPort PT878GC-01 electronics
  • 4 in to 24 in (100 mm to 610 mm) and larger with TransPort PT878GC-02 electronics
Pipe wall thickness Thicker walled pipes require greater gas density. See Installation Requirements Table.
Pipe materials All metals and plastics. No lined pipes
Flow accuracy (velocity)
  • For pipes 6 in (150 mm) and smaller: ±2% to 5% of reading typical
  • For pipes over 6 in (150 mm): ±1% to 2% of reading typical

Accuracy depends on pipe size and other factors.

Repeatability ±0.2% to 0.5% of reading
Range (bidirectional) See Installation Requirements Table
Rangeability (overall) 150:1
  Specifications assume a fully developed flow profile (typically 20 diameters upstream and 10 diameters downstream of straight pipe run) and flow velocity greater than 5 ft/s (1.5 m/s). Pipes 2 inches (50 mm) or less require a minimum of 10 ft (3 m) of continuous straight run without flanges, welds or coupling joints.
Measurement parameters Standard and actual volumetric flow, flow velocity and mass flow
Flow measurement Patented correlation Transit-Time™ mode
Enclosure Submersible IP67
Dimensions Weight 3 lb (1.36 kg), size (h x w x d) 9.4 in x 5.5 in x 1.5 in (238 mm x 138 mm x 38 mm)
Display 240 x 200 pixel backlit LCD graphic display
Keypad 25-key, rubberized tactile membrane keypad
Internal battery Rechargeable battery: 8 hours of continuous operation
Battery charger input 100 to 250 VAC, 50/60 Hz, 0.38 A
Memory FLASH memory, field-upgradeable
Operating temperature –4°F to 131°F (–20°C to 55°C)
Storage temperature

–40°F to 158°F (–40°C to 70°C)

To ensure maximum battery life, storage temperature exceeding 95°F (35°C) is not recommended for more than one month.

Standard inputs/outputs
  • One 0/4 to 20 mA current output
  • One user-selectable pulse (solid state, 5 V maximum) or frequency (5 V square wave, 100 to 10,000 Hz)
  • Two 4 to 20 mA analog inputs with switchable power supply for loop-powered temperature or pressure transmitter
Digital interface Infrared communication port for printer or PC interface
Site-parameter programming
  • Menu-driven operator interface using keypad and “soft” function keys
  • Online help functions including pipe tables
  • Storage for saving site parameters
Data logging
  • Memory capacity to log over 100,000 flow data points
  • Keypad programmable for log units, update times, and start and stop time
Display functions
  • Graphic display shows flow in numerical or graphic format
  • Displays logged data
  • Extensive diagnostic parameters
European compliance Battery-powered system complies with EMC directive 89/336/EEC
Clamp-on ultrasonic flow transducers
Temperature ranges
  • Standard: -40°F to 266°F (-40°C to 130°C)
  • Optional (overall range): -40°F to 446°F (-40°C to 230°C)
Transducer materials Stainless steel and plastic
Mountings Portable gas-transducer clamping fixtures in polycarbonate carrying cases:
  • PCFG-1 for pipes smaller than 12 in (300 mm) in diameter
  • PCFG-2 for pipes larger than 12 in (300 mm) in diameter
Mounting couplant CPL-16
Area classifications
  • Standard: general purpose
  • Optional: weatherproof Type 4 IP65
  • Optional: explosion-proof Class I, Division 1, Groups C and D
  • Optional: flameproof EX II 2 G EEx md IIC T6–T3 (certification pending)

TransPort PT878GC electronics are designed for general purpose areas.


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