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Large water meter test system

Test systems for large and combination water meters up to DN 300 – with volumetric or gravimetric reference and test points up to 1,000 m³/h.

Test rig for large water meters with reference section
FLOW RATE
5 – 1,000 m³/h
MEASUREMENT UNCERTAINTY
≤ 0.2 %
NOMINAL SIZES
DN 50 – DN 300
TEST POSITIONS
1 – 4

What the system delivers

For large flow rates the system works with a volumetric reference via verified vessels or with gravimetric weighing. Pumps and control valves keep the test points stable throughout the measurement.

Meters are changed using hydraulic clamping systems with seal set change, so even meters up to DN 300 can be changed at the test position without a crane. Test programmes and reports are identical to the domestic systems.

The systems are used by water utilities, verification bodies and accredited calibration laboratories.

Scope of supply

Test section with hydraulic meter clamping
Volumetric or gravimetric reference
Pump and control valve station with frequency control
Pressure, temperature and venting control
Operator station with inotech test software and database
Reference section of the large water meter test rig
REFERENCE SECTION OF THE TEST RIG
Valve of the test section
VALVE OF THE TEST SECTION
Operator station with inotech test software
OPERATOR STATION WITH TEST SOFTWARE

Large nominal sizes, stable test points

Up to 1,000 m³/h

Test points across the entire range of large and combination meters.

Two reference principles

Volumetric via verified vessels or gravimetric via weighing.

Fast meter change

Hydraulic clamping with seal set change up to DN 300.

Combination meters

Testing the changeover points of combination meters in one sequence.

Stable test points

Frequency-controlled pumps keep flow rate and pressure constant.

Testing to MID

Test point sequences and error limits to MID and OIML R49.

Technical specification

VALUES DEPEND ON CONFIGURATION · BINDING IN THE PROJECT DATA SHEET
Flow rate
5 m³/h to 1,000 m³/h
Measurement uncertainty
≤ 0.2 %
Nominal sizes
DN 50 to DN 300
Test positions
1 to 4
Reference system
Volumetric (verified vessels) or gravimetric
Test medium
Water, temperature-controlled
Meter types
Woltmann, combination, ultrasonic and electromagnetic meters
Clamping system
Hydraulic, with seal set change
Standards
MID, OIML R49, national test regulations
Software
inotech standard user interface, identical across all system types
Interfaces
ERP/MES integration, network, database and CSV export
Documentation
Test reports, calibration certificates, ISO 17025-capable traceability

Configuration and expansion

Temperature control

Control of water temperature for tests at defined operating points.

Pressure test

Integrated tightness and pressure resistance test in the same cycle.

Automated handling

Feeding and removal of meters via conveyor belts.

Retrofit

Modernisation of existing test rigs to current controls and software.

Do you have specific technical requirements?

Send us your specification – meter types, flow ranges, number of test positions and the required degree of automation.