Question: Do you have some short instructions for using this indicator?
Answer: Short Instructions for Reading Twin-Tube Piezometer
- Before leaving office, check that the indicator has enough gas.
- At the site, turn flow control valve to Vent and zero the pressure gauge.
- Turn flow control valve Off.
- Wipe off all dirt and moisture from the transducer tubing and connectors.
- Connect the quick connect plug to Transducer socket and vent tube to the return flow indicator.
- Turn tank control valve On, then turn the regulator knob clockwise until pressure reaches the rating of the gauge. 7. Turn flow control valve On.
- Adjust the flow rate knob so that the pressure reading on the main gauge rises at about 1 PSI per second.
- Wait until ball in return flow indicator shows a return flow of gas from the transducer, then turn flow control valve Off.
- Wait until pressure reading stabilizes, then tap gauge and write down reading.
- To verify, briefly turn flow control valve to Vent, then return to On. This changes the pressure reading. Now take a second, verification reading.
Question: The supply pressure doesn’t stay constant. Is something wrong with my indicator?
Answer: Try these diagnostic steps.
- Make sure the internal tank has adequate pressure and the tank control valve is ON.
- With no piezometer attached, set the supply pressure regulator to 100 psi.
- Turn the flow control valve ON, and open the flow rate valve until the digital gauge reaches 100 psi.
- Turn the flow control valve OFF. The digital gauge should settle around 100 psi. (Supply regulated pressure).
- If the the pressure drops below 100 psi, there is indeed a problem with the indicator. If the pressure is maintained at 100 psi, there is probably a problem with the piezometer connection, the piezometer tubing, or the piezometer itself.
Question: I lost the manual for my Meriam Smart Manometer, which is the digital gauge used in the 256 Indicator. Do you have a replacement manual?
Answer: Yes. Follow this link: Download the Meriam manual.