Small Meter (up to 2") Test Systems

Series 3-500
Series 5-1000
Series 6-1200
Series 100
Series 300
Series 500
Series 1200
Series 2400
Series 5000
Series 10000
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The Small Meter Test System developed by MARS Company employs the latest in design and process control technology, setting the worldwide standard for the small meter testing and management industry. This versatile system can be configured to meet the testing needs of virtually any small meter management organization.

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 or Gravimetric (optional) technology and to meet/exceed AWWA, ISO and NIST specifications.

Simplify Operations

Automation is available with optional Gravimetric and MARS M3 Meter Management Software integrations.

Typical Applications

Water utilities or water meter manufacturers requiring the testing of meters from 5/8” to 2” sizes (larger sizes available)

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

In retrofits and additions where existing test equipment alone is no longer able to meet the needs of the utility or manufacturer

Where software and controls only are needed to be retrofitted into already existing sufficiently operational testing equipment

Standard and Optional Features

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

10 Gal./1 Cu.Ft. and 100 Gal./10 Cu.Ft. Stainless Steel Duplex Tank.

Optional larger sizes, including 300 Gal., 500 Gal., and others are available.

Learn More about MARS Test Tanks

Two (2) precision rotameters that cover a flow range from .1 – 60 GPM (optional third rotameter up to 160 GPM if high flow on 2” meters are specified).

Corrosive Protection (polyester coated steel bench frame).

All meter adapters, meter and adapter gaskets, manual flow control valves, document station, electric actuated clamping device, carrier bars and spacer spools.

The MUN-200 is an automated shutdown feature, which provides a consistent shut off for each and every test. This provides a more accurate test and further eliminates the element of human error.

In addition, the MUN-200 prevents accidental overflow as well, which is specified in the AWWA’s M-6 Manual as a recommended safety element.

  • 2-stage test quantity control complete with control panel
  • Utilizes level probes in 10 and 100 Gal tanks
  • One set of low and mid flow probes in 10 and 100 tank shuts system off via solenoid valve at full quantity
  • Level probe shutdown system is an intrinsically safe 12VDC system
  • Valves partially close when level meets 97% of full test quantity, then fully closes at 100% (On high flow tests) via an actuated ball valve
  • All 110 VAC connections are enclosed in water tight conduit and boxes
  • Level probes are mounted to the top of the tanks and are fully adjustable

The MARS Company Gravimetric System includes a scale, console, computer, printer, display and the MARS M3 Meter Management Software.

The Test Bench, with the Gravimetric System, is traceable to NIST (National Institute for Standards and Technology) Handbook 44 specifications, providing 1/10% repeatable accuracy.

  • Motion detection range setting unit
  • Alarm to prevent over-flow
  • Run test sequence by time or volume
  • Five selectable units of measure (gallons, cu. ft., cu. meters, imperial gallons and pounds)
  • Units can be modified per customer request
  • User selectable test names or line names (example: Q-Min or .5” line)
  • Auto drains the tanks after the test or holds the water in the tank in order to stack test (scale automatically zeros after each test)
  • Built in leak detection on scale, after the test with a variable leak check
  • Selectable purge of one line or all lines based on a time which is operator adjustable
  • Emergency stop or test abort in all phases
  • Auto compensating free-fall adjustment (PRE-ACT) to stop test on target value
  • Units are set up for computer and or printer interface
  • Control software is upgradeable
  • The scales are a NIST approved class III weighing device
  • The weighing devices are traceable to Handbook 44 specifications
  • System accuracy is ¼ of one percent and repeatable to 1/10 of one percent

Learn More about MARS M3 Enterprise Software

With the introduction of ultrasonic and electromagnetic meters under ANSI/AWWA C715-18, additional test requirements were introduced. 

MARS has incorporated many of these into Small Meter Test Bench Systems as an optional upgrade to new and existing equipment.

Learn More about C715 Upgrades

The Recirculation System recycles the test water used on the MARS Test Bench, maintaining volume and pressure to test the meters at the recommended AWWA Specifications, per Table 5-3 of the current AWWA M6 Manual.

Benefits include but are not limited to: compliance with local, state and/or Federal laws and regulations as it reduces the chemicals released into the environment; an immediate reduction in consumption and water dumped to waste after each test; Improved customer perception as the Water District sets an example for water conservation practices.

Learn More about MARS Recirculation Systems

  • Utilizes municipal (public) service to supply the needed water to the test system
  • The water is drained from the measurement tank and then directed to the storm drain, municipal sewer, or wherever the user sees fit
  • The water service must be able to provide a pre-determined flow at a specific pressure (requirement depends on bench size and specifications) in order to achieve proper test results
  • Not recommended in situations where the cost of water is high or water conservation is desired

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

  • Eliminates shock and explosive hazards from hydraulic conditions
  • 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

Control Panel

  • Nema-4 or 12 enclosure
  • Grey enamel finish
  • Completely pre-wired to operate all test system functions
  • Equipped with Emergency Stop and Power On switch
  • Industrial momentary and multi-position selector switches

Meter Clamping

  • Utilizes hydraulic driven cylinder to compress meters and the spool spacers
  • Meters are held in place by carrier bars sliding on stainless steel rails along the length of the bench
  • UHMW polyethylene outboards and glides are mounted to the solid brass center carrier bar for minimal friction
  • Uses inter-changeable adapters to hold various meter thread sizes
  • Meter adapters are set up with 90 durometer polyurethane gaskets for longevity
  • Carrier bars are equipped with locator pins to align meters and prevent accidental misalignment and blowouts
  • Utilizes 1/4” O-rings and square groove technology on 1-1/2” and 2” carrier bars
  • All wet parts are brass
  • Designed to hold pressures to 150 PSI


  • Fabricated steel
  • Welded in accordance to standard industry practices and certifications
  • Capable of compressive and hydraulic forces equal to fifteen thousand pounds of pressure
  • Total weight rating of ten thousand pounds without distortion or misalignment
  • 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

Splash Pans

  • Stainless steel construction
  • Extends full width and length of test bench
  • Built in panels of 10 feet or less to facilitate removal and cleaning
  • Drip free
  • 1 inch in 10 feet slope to lowest point where a stainless-steel nipple will be welded for drain tie-in

Document Station

  • Designed to cover motion operators and hold forms, pencils, etc.
  • Hinged lid
  • Angled writing surface with lip
  • Durable Formica construction
  • Stainless steel hardware


  • Provided in all sizes relevant to test bench size parameters
  • Quantity provided allowing the ability to test one meter
  • 1-1/2” and 2” spools set up with bronze oval flanged spaces
  • Constructed of Sch. 80 PVC pipe

Three Precision Rotameters

  • Low flow measurement of .1 to 1.5 GPM
  • Medium flow measurement of 1.5 to 15 GPM
  • High flow measurement of 15 to 60 GPM or 6 to 160 GPM

Low Flow Measurement Tanks

  • One set of 10/100 Gallon Stainless Steel Duplex Tanks STANDARD for all test bench sizes
  • Tank volumes of 10 Cu.Ft. / 100 US gallons and 1 Cu.Ft. / 10 US gallons
  • Tank option: one duplex tank 10/100 or one (1) 10 Gallon Tank and one (1) 100 Gallon Tank
  • Based on standard dimensions, custom tanks can be fabricated upon request
  • Stainless steel construction
  • Built in accordance with industry safety and seismic standards

High Flow Measurement Tanks (Up to 2″ Meters)*

  • Size of tanks depend upon the test bench parameters and output requirements
  • Standard sizes are as follows: 300 US gallons, 500 US gallons, 1000 US gallons
  • All standard sizes are based on standard dimensions, custom tanks are fabricated upon request
  • Stainless steel construction
  • All tanks are built in accordance with industry safety and seismic standards

Ball Valves

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

Electric Ball Valve Actuators (Configuration Dependent)

  • Nema-4x enclosures, zinc plated, two-part polyurethane Open/Closed Angle position indicator and
    90-degree operation from full open to full close in 7 seconds
  • Manual override hand wheel
  • Torque switches
  • 30% duty cycle
  • 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

Small Meter Test Bench System Model Selection

Brochures and Datasheets


Water Meter Test Bench Systems Brochure 3 MB 811 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 343 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.