Xylem 19 001 300 R2 Silent Storm VFD Pumping System OMRON Touch Screen Display Manual - Manual (Page 75)

© 2013 Flowtronex
How Do I? 71
1) With 20 ma applied to the correct channel on the PLC (+ port), view and average the raw data
value that is in Raw Data (:20 or :21), and enter that value in MaxIn (:80 or :81).
2) Enter the maximum value of the pressure transducer (normally 250 PSI) in MaxOut (:100 or
:101).
Calibrating the maximum pressure using pressure
1) Close the isolation valve underneath the DSR (ClaVal).
2) Close the ball valves for the heat exchanger tubing.
3) Close the station discharge isolation valve.
Warning:
If your station has an Amiad filter that does not have a bypass option allowing you
to isolate the filter, do not follow this step. Leave the DSR isolation valve open and
perform the rest of the calibration. Your pressure will be approximately 5 PSI
greater than your setpoint pressure
4) Manually start a main pump across the line, or start a VFD pump using the manual speed pot
(turn to 100%).
5) Once the pressure has settled at its maximum value, turn off the main pump.
6) Pressure should hold steady. If it bleeds off, determine where it is leaking and isolate if possible.
This a very good test to ensure that none of the silent check valves at the pump discharges leak.
Repeat steps 4 - 6 as required.
7) View and average the raw data value that is in Raw Data (:20 or :21), and enter that value in
MaxIn (:80 or :81).
8) Look at the appropriate pressure gage. Enter that value (in PSI) in MaxOut (:100 or :101).
9) Open the isolation valve underneath the DSR (ClaVal) first to lessen the system pressure.
10) Slowly open the station discharge valve, as well as any other valves that you closed in steps 2
and 6.
2.13.2 Calibrate Flow
Flowtronex® uses two main types of flow sensors: pulse and analog. The pulse type flow sensor used
by Flowtronex® is the 220B. It is a pulse device if wired to the high-speed counter (HSC) card on the
PLC. However, the 220B flow sensor can be an analog device if it is wired in conjunction with an
analog transmitter (Model 310 or similar device) to an Analog Input/Output card on the PLC. The
Krohne flow meter is one type of stand alone flow sensor.
Access the Register Access screen by pressing the Register Access key on the Main Menu .The
calibration screens are accessed from the Register Access screen by pressing the N Register Menu
touch key.