Operating Temperature/Pressure Graphs: Flow Sensors

Transcription

1 Operating Temperature/Pressure Graphs: Sensors Model 1 Model & 7* PVDF PVDF 1 Polypropylene Polypropylene 1 1 ( F) ( C) 1 1 ( F) ( C) *7 Only: Graph applies to wetted materials (sensor) only. Maximum ambient temperature is C. Model 19 WetTap ( F) ( C) Model 17 & Model tee or mini-tap fitting saddle fitting ( F) ( C) FPM O-ring EPDM O-ring ( F) ( C)

2 Operating Temperature/Pressure Graphs: Sensors Model 1 Model bar psi Choosing Multi-Parameter Instrument 1 Acceptable Media Range ph/orp F C C 1 F Conductivity/ Resistivity Model 7/71 Model PVC ( F) ( C) Model Temperature PVDF ( F) ( C) Temperature, Pressure, Level Other Wiring & Installation Technical Reference Temperature/ Pressure Graphs ( F) ( C) Glossary Part No. of Terms Reference Index

3 Pressure Drop Graphs: Sensors Model Model 1 Pressure Drop - High Pressure Drop - High GPM LPM..7.. Pressure Drop GPM LPM..7.. Pressure Drop Pressure Drop - Low GPM LPM Pressure Drop Pressure Drop - Low GPM LPM Pressure Drop Model V -V -V -V rate (%) of full scale

4 Backpressure Calculation: Minimum downstream pipe backpressure levels (full pipes) are required to prevent cavitation within the sensor. The minimum back pressure is calculated by the following formula:.7 x ΔP + 1. x Pv ΔP = Pressure drop across sensor Pv = Liquid vapor pressure at operating temperature. Backpressure Drop Graphs: Sensors Model 7-71 (bar) 1..1 (psi). 1. Pressure Drop (ΔP) Sensor size: d d d d d d Rate (V). gpm lpm Liquid Vapor Pressures at Operation Temperatures C F Pv (bar) Pv (psig) Medium: C ( F) Choosing Multi-Parameter Instrument ph/orp Conductivity/ Resistivity Temperature, Pressure, Level Other Wiring & Installation Technical Reference Temperature/ Pressure Graphs Glossary Part No. of Terms Reference Index

5 Operating Temperature/Pressure Graphs: Sensor and ph Electrode Fittings PVC and CPVC Tees and Saddles PVC to in. PVC 1 to 1 in. CPVC. to 1. in. PVC. to 1. in ( F) ( C) Fiberglass Tees and Saddles Fiberglass in. Fiberglass 1., in. Fiberglass,, in. (PVDF Insert) Fiberglass 1, 1 in. (PVC Insert) ( F) ( C) Note: The pressure/temperature graphs are specifically for the Signet sensor. During system design the specifications of all components must be considered. In the case of a metal piping system, a plastic sensor will reduce the system specification. When using a PVDF sensor in a PVC piping system, the fitting will reduce the system specification. PP and PVDF Tees Saddles 1. Metal Weld-o-lets and Saddle Fittings For 1, & 7 Sensor PP to 1 in. PVDF Polypropylene ( F) ( C).. 7 Metal Weld-o-lets and Iron Saddles 1 in.- up Metal Weld-o-lets. to in ( F) ( C) Iron Saddles to in. Metal Tees Bronze Tees. 1 Metal Tees. to in ( F) ( C) 1 1 ( F) ( C)

6 Operating Temperature/Pressure Graphs: ph/orp Electrodes Model & Model Choosing Multi-Parameter Instrument 7 7 min. 7-HF max ( F) 1 7 ( C) Models 7-77 Models ( F) ( C) min. 7-HF max ( F) 1 7 ( C) ph/orp Conductivity/ Resistivity Temperature, Pressure, Level Other ( F) ( C) Model 719 psi bar 7 1 in. PP Saddle in. PP Saddle ½,,, 1 & 1 in. PP Saddles Custom fittings required to operate in this range! Consult Factory C F Wiring & Installation Technical Reference Temperature/ Pressure Graphs Glossary Part No. of Terms Reference Index 7

7 Operating Temperature/Pressure Graphs: Conductivity Electrodes Models 19- Models 19-1, -1, 1-1 Models optional 1/ in. NPT standard fitting ( F) ( F) ( C) ( C) Models ( F) ( C) Models ( F) ( C) Models ( F) ( C)

8 Operating Temperature/Pressure Graphs: Temperature/Pressure Sensors Model ( F) ( C) Model (bar) (psi) XL -XU -XH ( F) 1 7 ( C) Choosing Multi-Parameter Instrument ph/orp Conductivity/ Resistivity Temperature, Pressure, Level Other Wiring & Installation Technical Reference Temperature/ Pressure Graphs Glossary Part No. of Terms Reference Index 9