Mobile Meter Test Systems

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The Truck, Van or Trailer-Mounted Test System is designed to fit on a utility vehicle, pickup truck, van or on/in a trailer, supplied by the customer (unless specified). The test unit is based on comparison meter technology and is fully linearized and calibrated to avoid inherent test meter accuracy curves, providing clients with the ability to test meters in the field without removing them from service.

MARS Test Bench Systems are designed to meet / exceed American Water Works Association (AWWA) recommendations, National Institute for Standards and Technology (NIST) Handbook 44 Specifications, ISO Specifications and other standards and requirements.

Revenue Recovery

Understanding how your meters perform in the field will allow you to reduce unaccounted for water in your system.

Increase Confidence

Designed to operate using Volumetric technology and to meet/exceed AWWAand NIST specifications.

Simplify Operations

Automation is available with MARS M3 Meter Management Software integrations.


Typical Applications

Water utilities or water meter manufacturers requiring the testing of meters in the field.

Tests meters of all lengths and types

Where testing to a higher standard of accuracy and repeatability is required

Where improvements to revenue, manpower utilization, efficiency, and safety are needed

Tests meters without requiring the meter(s) to be taken off-site

Standard and Optional Features

Available on every Mobile Meter Test System configuration.
* Denotes Optional Items, contact MARS for details

Comparison meters are precision high accuracy turbine type meters. Meters to be installed in pipe manifold with correct up-stream and down-stream straight pipe in accordance with manufacturers specifications.

Corrosive Protection (polyester coated steel bench frame).

Supplemental Hardware, such as hoses or a MARS ThrustBuster, can be ordered along with a MARS Mobile Test System

MARS M3 Meter Management Software is required to operate MARS Mobile Test Systems.

This includes control over all line select valves and metering devices while providing data entry and collection using a controlled process.

Learn More about MARS M3 Enterprise Software

With MARS Certified, you can protect both MARS and selected third-party equipment with technical assistance, software upgrades, preventative maintenance, spares management and on-site maintenance.

Not only is the equipment upkeep essential, but ensuring all operators are fully trained on meter testing practices and procedures is critical.

Learn More about MARS Maintenance Calibration Certification (MCC)

Intrinsically Safe

  • Designed to minimize physical fatigue
  • Built to withstand any forces applied within the scope of its use
  • Easy to operate controls to minimize operator errors

Electronic Controls

  • Package is protected by a NEMA 4 enclosure
  • Designed to fold down when the unit is not being used and then covered to avoid the elements
  • Grey enamel finish
  • 120VAC designed to operate all test system functions
  • Equipped with computer and PLC designed to handle dual stage shut down and accept batch quantities as required by technicians
  • Meters are linearized through a ten-point linearization circuit designed to eliminate the normal error curve of the test meter
  • Powered by an on-board generator/inverter (provided by customer – must be fully protected from low or high voltage spikes)
  • Equipped with Emergency Stop and Power On switch
  • Industrial momentary and multi-position selector switches


  • A bronze z-plate strainer is installed on the supply end to filter out debris and polish the flow profile of the water for accuracy
  • Constructed of B-62 Bronze in accordance with AWWA C-701 standards


  • Constructed of 1-1/2” 14-gauge fabricated steel tube
  • Welded in accordance to standard industry practices and certifications
  • Pipe work is mounted to the frame at three points
  • Equipped with three lifting eyes, allowing the tester to be removed safely without damage to the test unit or the vehicle
  • Stainless steel load bearing surface at side rails


  • Polyester Coating in MARS Blue
  • Minimum of 20 years resistance to corrosion
  • High impact resistance
  • All steel is fully sandblasted and treated with Atochem rust proof primer before being coated for total bonding
  • Frame is not touched by human hands within at least 2 hours of drying
  • Coating is applied using the electrostatic method, then placed in an oven at 495 degrees F until fully bonded
  • The frame is electrostatically spark tested to detect defects


  • Main Piping (high flow line) consists of 4” diameter schedule 40 fitted steel pipe with 2 ½” fire hose inlet and outlet fittings
  • Piping is powder coated to prevent corrosion as outlined above
  • Low flow line is a ½” diameter brass pipe with a maximum flow rate of seven gallons per minute
  • Medium flow line is a 1” diameter brass pipe with a maximum flow rate of fifty gallons per minute
  • 4” line is supplied with a straightening vane in-line before comparison meter to ensure maximum accuracy

Comparison Meters

  • Comparison meters are precision high accuracy turbine type meters with correct up-stream and down-stream straight pipe
  • Meters constructed of 304 stainless steel body, 316 stainless steel hydraulically balanced rotor, stainless ball bearings
  • Meter designed for linearity: +- .5% over specified flow range, repeatability: +- .10% over specified flow range
  • High flow maximum pressure loss of 4 PSI at maximum flow range, suitable for operating pressure of 3000 PSI
  • 3/8” meter with flow range .75 to 7 GPM and male NPT end connections
  • 1” meter with flow range 7 to 50 GPM and male NPT end connections
  • 4” meter with flow range 50 to 1000 GPM and male NPT end connections

Ball Valves

  • Chrome plated ball with Teflon seat
  • Full port
  • 3-piece stainless steel body
  • 150 PSI rating

Butterfly Valves

  • Lug style butterfly valves with electric actuators
  • Valve body is cast or ductile iron with EPDM or Buna-N liner
  • Valve disc is stainless steel
  • Valves are operated by electric actuators

Electric Ball Valve Actuators

  • Nema-4x enclosures, zinc plated, two-part polyurethane Open/Closed Angle position indicator and 90-degree operation from full open to full close in 6-15 seconds (dependent on valve size)
  • Manual override hand wheel
  • Mechanical travel stops
  • Internal heater
  • Ball bearing 110 VAC motor with thermal protection
  • Temperature range –4 to 158 degrees F
  • Life cycle: 100,000 operations minimum

Brochures and Datasheets


Water Meter Test Bench Systems Brochure 3 MB 812 downloads

For over 30 years MARS Company has proven itself in the waterworks industry as the...

AWWA C715-22 Compliant Test Bench Upgrade Datasheet 2 MB 345 downloads

MARS Company, a global leader in water meter testing and technology solutions, offers...

Recirculation Systems Datasheet 464 KB 198 downloads

Designed for use with every MARS Test Bench System, the Recirculation provides the...

MCC Datasheet 1 MB 324 downloads

MARS Calibration, Maintenance and Support Program (MCC~MARS Calibration Certification)...

MARS VEROflow-10 (VF-10) Datasheet 182.65 KB 94 downloads


Press Releases

Is your Water Meter Test System ANSI/AWWA C715-18 Compliant?

MARS Company offers the first and only Test Bench Equipment Upgrade Program, enabling customers to upgrade their existing MARS test bench equipment to comply with the ANSI / AWWA C715-18 industry standard.

Is your Meter Shop Certified?

With MARS Maintenance Calibration Certification (MCC), you can protect both MARS and select third-party equipment with calibration, technical assistance, software upgrades, preventative maintenance, training, spares management, and on-site maintenance.