Description
The RF1 is a compact residential gas meter designed to accurately measure volumes of natural gas, LPG and all non-corrosive gases. Several versions and options are available to meet various application requirements. Its design minimizes installation costs and enables future field upgrades.
Application :
The RF1 long term meterology stability makes in the right choice for demanding high consumption residential gas markets.
Metrology :
The RF1 gas meter meets strict metrological requirements such as MID, O.I.M.L and EN1359 as wll a different national requirements and standards (such as PTB, DVGW and KVGN). The RFL is a combination of proven and reliable gas meter concepts and includes ;
- A reciprocating synthetic diapgragm
- Crank controlled and oscillating slides
- Robust and tight connections between components
- The use of precise, light-weight and noise free plastic parts
During the preliminary test controls on sonic nozzle test benches all meters are tested at Qmin, 0.2 Qmax and Qmax. In accordance with EC regulations, the maximum permissible error is +/-3% from Qmin to 0.2 Qmax and +/-1.5% from 0.2 Qmax to Qmax.
Operating Principle
The RF1 is a positive displacement diaphragm gas meter with a stand alone twin chamber measuring unit The twin chambers are each fitted with a flexible and gas tight diaphragm which is moved by the differential the inlet and outlet pressure. The gas enters one side of the diaphragm plate, and comes on side is full, the sliding valve moves on to the next position, allowing the gas file the empty side.
A transmission gear and either a magnetic coupling of stuffing box transfer the reciprocating motion to the mechanical or electronical index.