Onicon System-10 BTU Manual do Utilizador descarregar pdf (Página 31)

11451 Belcher Road South, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax (727) 442-5699 • [email protected]

System-10 BTU Meter Manual 03/15 - 0651-16 / 18323 Page 31

SECTION 5.0: DIAGNOSTICS

5.1 DIAGNOSTICS

The ONICON System-10 BTU Meter uses a microprocessor

to calculate energy. Factory programmed settings provide

rate and total values in accordance with the customer’s

application data. Refer to the Btu meter certicate of

calibration for a complete listing of factory settings. These

settings may be reviewed and changed with assistance from

ONICON.

The System-10 BTU Meter is also equipped with diagnostic

indicator lights and self diagnostic test signals that conrm

the operation of the microprocessor and its input circuitry.

Please contact ONICON if any of the diagnostic lights or

test signals listed below indicates a potential problem with

the operation of the Btu meter.

5.1.1 Diagnostic Lights

Low Voltage Power Supply

Located on the power supply board inside the System-10 BTU Meter (refer to A-15),

is a single LEDs that will illuminat when +15 VDC is present.

Liquid Flow

Located in the center of the motherboard (refer to A-12) next to terminal block T5, the

LED will ash at a rate that is proportional to the liquid ow rate for frequency ow

signals. For 4 - 20 mA signals, the light will stay lit whenever the output is greater than

4 mA. An unlit LED indicates no ow signal.

5.1.2 Flow Test Signals

Flow Test

Located in the center of the motherboard (Refer to A-13) immediately above the power

supply board is a three position slide switch used to test the ow input. When the switch

is in the top position, the Btu meter input is connected to the ow meter. When the switch

is in the middle position, the Btu meter input is connected to two test terminals used to

apply a variable frequency to simulate ow. When the switch is in the bottom position,

the Btu meter input is connected to a 50/60 Hz signal that simulates a xed ow rate.

Refer to the Btu meter certicate of calibration to determine the correct display reading

when operating in the 50/60 Hz test mode.

INTEGRATED BTU METER

CERTIFICATE OF CALIBRATION

METER INFORMATION

Meter Tag:

BTU Meter Model: SYSTEM-30

Serial No: 134036

SPECIFIED INSTALLATION & OPERATING PARAMETERS

Pipe Information: 1 Inch Copper Tube

Design Maximum Flow Rate: 40.0 GPM

Design Supply Temperature: MODE 1: 45°F

Design Return Temperature: MODE 1: 55°F

Fluid: 25% Ethylene Glycol

Fluid Specific Heat: 0.885 BTU/lb°F

Fluid Density: 65.06 lb/ft³

CONFIGURATION DATA

Enclosure Type:

Input Supply Voltage: 24 AC/DC

Thermowell Type:

CALIBRATION AND PROGRAMMING DATA

Firmware Version: CFM4.6S30

Communications Protocol:

Device Network Address:

Flow Sensor MF Code: 547.500

Programmed Units & Multipliers:

Energy Total: BTU x 1K Energy Rate: BTU/HR x 1K

Flow Total: GAL x 10 Flow Rate: GPM x 1

Temperature: °F

Damping: 5

Pulse Duration: 500 ms

Supply Temperature Slope: 9.969 Offset: -0.870

Return Temperature Slope: 10.004 Offset: -0.130

OUTPUT SIGNAL SCALING

Energy Total(s): 1 Pulse = BTU x 1K

Flow Rate: NA

Energy Rate: NA

Supply T: NA

Return T: NA

Delta T: NA

Calibrated By: Date: 09/01/2004

1500 North Belcher Road, Clearwater, Florida 33765 Tel (727) 447-6140 Fax (727) 442-5699

ONICON Incorporated certifies that the flow and temperature sensors provided with this Btu meter have been individually calibrated based on the

lication s

ecific data

rovided above

;

usin

standards directl

traceable to the U.S. National Institute of Standards an

Technolo

gy (

N.I.S.T.

)

Shane Hamilton

IMPORTANT NOTE

The second line of the display will alternate between TEST MODE and the normal display of

engineering units and multipliers whenever the ow test switch is in the TEST or 60 Hz positions.

IMPORTANT NOTE

After operating for ve minutes in either the TEST or 60 Hz mode, the displayed ow and energy

rate will be disabled, and the meter will report a zero ow rate and a zero energy rate to the

network. The meter will remain in this state until the switch is set to RUN.

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