| 摘要 |
PURPOSE:To make accurate and stable measurement by flowing pressurized fluid to be tested flowing in an existing pipe line such as water supply a residual chlorine sensor, and thereby measuring residual chlorine concentration. CONSTITUTION:Fluid to be tested flowing in a residual chlorine sensor 1 through a Teflon tube 2 out of a fire hydrant or a faucet 3 and the like provided for an existing pipe conduit. Water pressure within the sensor 1 is still under a high pressure as it comes out of the fire hydrant and the faucet 3 and the like because a constant differential pressure valve 4 and a needle valve 5 are located on the downstream side from the sensor 1. This is the reason why no bubble due to decompression will be caused within the sensor 1, so that the residual chlorine concentration of the fluid to be tested can thereby be accurately and stably measured. In thid case, the fluid to be tested measured within the sensor 1 is then discharged out of the constant differential pressure valve 4 and the valve 5. |
