Wet Test Meters

Elster American Meter Wet Test Meters are precision, positive displacement meters typically

used to measure small volumes and low flow rates.

Elster American Meter Wet Test Meters are individually calibrated under controlled conditions.

The Hinman-type drums (low-differential) provide a high degree of accuracy. These meters

will maintain the original calibration for long periods due to the extensive use of corrosion

resistant material. Additionally, the grommet-type seal is designed for minimum friction to

give maximum meter sensitivity.

Features

§  Compact, stainless steel housing

§  Soldered stainless steel drum and internal parts

§  Easy to read index has large resettable sweep hand and four resettable totalizing hands-available in liters or cubic feet

§  High visibility gage glass permits accurate liquid level adjustment

§  Inlet & outlet connections adaptable to hose

§  Buna-N gaskets

§  Bulls eye level and leveling screws provide means for correct operational position of meter

§  The back of the meter is removable to ease maintenance and facilitate cleaning

Applications

§  Laboratories and Research/ Educational Institutions

§  R&D for Refinery Pilot plants

§  Calibrating small orifices

§  Determining proper fuel-air ratios for gas appliances

§  Finding gas volumes resulting from chemical reactions

§  Testing gas consumption in domestic-science cooking experiments

§  Calibrating atmospheric-emission sample meters

§  Gas appliance testing

§  Calibrating diaphragm-type reference meters

§  Any application where accurate measurement of small volumes and low flow rates of manufactured, natural or technical gases are required

Principle of Operation

Each Elster American Meter Wet Test meter contains a hollow drum with several compartments of

known volume. The drum is free to rotate inside the meter casing, which is sealed and filled with

liquid to a specific level. When gas passes through the meter the drum rotates. Each compartment

of the drum is successively filled and emptied as it rotates. The liquid inside the casing seals the drum

compartments as they transfer the gas from the inlet to the outlet of the meter. Since the volume of

each compartment is known, the rotation of the drum can be indexed to compute the total volume

of gas passed through the meter.