LTH type trolley prover is a small movable flow standard device which uses the gas rotary flowmeter as the master meters. It could be used to do indoor or field calibration for the Roots flowmeter, industrial diaphragm flowmeter as well as turbine flowmeter, etc. This product adopts the dual timing technology and PID technology with stable flow, showing features like: a high level automation, quick efficiency, easy operation etc. It is suitable for delivery and periodic calibrations of the displacement and velocity-type flowmeters.
Components:
Two Roots meters as the master meters
Temperature and pressure transducers
Hose and quick coupler
Blower
Controller that regulates blower flow and collects filed data
Computer system that could calculate and display testing data
Buffer tank
Junction box and accessory box
Performance index:
Flow range: 0.5m³/h ~ 400m³ /h .
System uncertainty: better than 0.5%
System repeatability: 0.1 %
Ambient temperature: 0ºC ~+40ºC
Humidity ≤ 95 %
Working power: 220V d.c
Testing medium: Air
Dimension of the prover: 1100x550x600mm
Applications:
It could be used for both indoor and field calibrations
Instruments that could be calibrated include: Roots flowmeter, turbine flowmeter, industrial diaphragm meter. When calibrating the velocity-type flowmeter, a flow straightener and a buffer tank shall be mounted