ONICON System-30 MODBUS BTU - Manual (Page 17)

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System-30 BTU Measurement System MODBUS RTU RS485 04/14 - 0583-1 / 18345
Page 17
SECTION 4.0: START UP AND COMMISSIONING
4.1 DISPLAY AND USER INTERFACE (If display ordered)
The System 30 may be ordered from the factory with an optional display and user interface.
The display consists of 2 lines of alphanumeric characters. Line 1 indicates the current value
while the bottom line identifies the engineering units and multiplier values that apply to the
current value displayed on line 1. In the example shown the current value is 3864, the
engineering units are Btu’s and the multiplier is 10,000. This would be read as 38,640,000 Btu’s.
The user interface consists of 3 pushbutton switches. These 3 switches allow the user to operate
the display and program the meter.
When operating in the run mode, the scroll button
advances the display from one parameter to the next.
A total of up to 11 different operating parameters may
be available for display depending on whether the
meter is being used in a single mode or dual mode
application.
When operating in the run mode, the reset button (if
enabled) allows the user to reset volume and energy
totals.
The program button is not functional in the run mode.
4.2 PROCESSOR START-UP
When power is applied to the BTU Meter alphanumeric characters appear on the two lines of
the display, indicating the meter is operating. Press and release the SCROLL button on the front
panel. Observe the display cycle to the next display page.
Select the SUPPLY TEMP Page. Note the displayed temperature. Confirm that it is in the
expected range. Now select the RETURN TEMP page. Again note the displayed temperature.
Confirm that it is also in the correct range.
Select the FLOW RATE page. Note the displayed flow rate. Confirm that the flow rate value is in
the correct range.
Successively pressing the SCROLL button will cycle the display through the run mode pages
summarized in the tables on the next page.