Panametrics PanaFlow MV80, User Manual, Page: 98 / 184

Chapter 3. Operating Instructions
86 PanaFlow™ MV80, MV82 & MV84 User’s Manual
3.5.9 The Energy Menu for EMS Energy Meters Only
There are several possibilities regarding the measurement of water or steam energy, given the location of the meter
and the use of a second RTD.
Table 3 below summarizes the possibilities:
Table 3: Configuration Options
Fluid Meter Location Second RTD Measurement
Water “Sent” Flow Line “Return” Flow Line Change in Energy
Water “Return” Flow Line “Sent” Flow Line Change in Energy
Water “Sent” Flow Line None Outgoing Energy
Steam “Sent” Flow Line “Return” Flow Line (condensate) Change in Energy
Steam “Sent” Flow Line None Outgoing Energy
To use the above options, you must properly configure the meter in the Energy Menu (see Figure 103 on page 87 ) by
completing these steps:
1. Loc in Sent Flow? Select Yes or No based on where the meter is located. Refer to Table 3 above.
2. Heating System? Select Yes for a hot water system used for heating. Select No for a chilled water system used for
cooling. Always select Yes for a steam system.
3. % Returned. Select a number between 0% and 100% . Estimate the amount of water that returns. It is usually 100%,
or can be less than 100% if historical data shows the amount of makeup water used. If a second RTD is not used,
set to 0%. When 0% is selected, the energy calculation represents the outgoing energy only (no return energy is
subtracted).
Note: The meter ships from the factory assuming 0% return and has a 1000 ohm resistor installed in the RTD #2
wiring location. This needs to be removed if the meter is to be used in a manner other than with 0% return
and with the customer-supplied RTD in its place.