Idex Hale Sam, Техническое руководство

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Figure 146. Span Pressure Sensor Screen
5.3. Flowmeter Calibration Procedures
The following subparagraphs provide flowmeter calibration and reset procedures.
5.3.1
Set Flow To Factory Defaults
NOTES
This procedure is only required if a valves flow calibration errors/fails (becomes unre-
sponsive or gives obviously abnormal values). (All flows readings are displayed using
m
3
/hr units.)
An OEM/Technician password is required to access the screens to perform this proce-
dure. Contact the AHJ for applicable OEM/Technician information.
The value size should be verified by checking the physical valve marking and then
checking the Diameter (2.5, 4, 6) text box. (Located on bottom of the EDIT VALVE
screen in the SELECT DEVICE MENU).
Refer to FSG-MNL-00211 for passwords, screen navigation, and detailed instructions.
Use this procedure to assign (or reset to) the default flow value for the desire discharge valve.
Default flow values represent expected/known flow rates based on valve diameter/size (under
typically good flow design conditions).
5.3.2
Flow Calibration
DO NOT EXCEED OPERATING PRESSURE LIMITS OF PUMP, INSTALLED PLUMBING,
HOSE(S), OR EQUIPMENT IN USE DURING CALIBRATION.
AN ACCURATE FLOW MEASURING DEVICE MUST BE USED TO MEASURE THE WATER
FLOW WHEN CALIBRATING THE FLOW SENSOR. USE A SUITABLE SIZE, SMOOTH BORE
NOZZLE AND AN ACCURATE AND CALIBRATED PITOT GAUGE INSTRUMENT OR MASTER
FLOW METER. HAND HELD PITOT GAUGES ARE USUALLY NOT VERY ACCURATE. MAKE
SURE THE SYSTEM IS CALIBRATED WITH AN ACCURATE FLOW MEASURING DEVICE.