User's Manual for CM6G - Yokogawa

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2-52.2.4 OptionName Part no. DescriptionProbe H7800HA Insertion length 650 mmProbe H7800HB Insertion length 1150 mmProbe H7800HC Insertion length 1650 mmFulflo filter G7043XJ Element material: PolypropylenePore size: 50 μmBody: SUS 316Connection: Rc 1/2Pressure reducing valve G7008XF Primary pressure: 15 MPa max.Secondary pressure: 0 to 200 kPaMaterial: Brass2.3 Standard Systems for Each Application2.3.1 Standard Systems for Each ApplicationApplication Measurement System specification Suffix code*Town Gas WI WithoutdensitymeterCalorific valueMJ/Nm 3WithdensitymeterSteel Mill WI WithoutdensitymeterCalorific valueMJ/Nm 3WithdensitymeterGas pressure 10 to 20 kPa: StandardGas pressure 10 kPa or under: With pumpGas pressure 100 to 600 kPa: With pressurereducing valueGas pressure 10 to 20 kPa: Quake-proofGas pressure 10 to 20 kPa: StandardGas pressure 10 kPa or under: With pumpGas pressure 100 to 600 kPa: With pressurereducing valueGas pressure 8 to 15 kPa: Without preheatingGas pressure 8 to 15 kPa: With preheatingGas pressure 8 kPa or under: Without preheatingGas pressure 8 kPa or under: With preheatingGas pressure 8 to 15 kPa: Without preheatingGas pressure 8 to 15 kPa: With preheatingGas pressure 8 kPa or under: Without preheatingGas pressure 8 kPa or under: With preheating-S6200-S6300-S6400-S6110-S6210-S6310-S6410-S6500-S6600-S6700-S6800-S6510-S6610-S6710-S6810 Corresponding Suffix Code of “-S6”, gas pressure and measurement.Note: A wet sample gas in the town gas application is outside the scope of the standard specifications. Consult with Yokogawa.2.3.2 Instructions for System Selection(1) The quake-proof type gas calorimeter is always equipped with the density meter.(2) The CM6G Gas Calorimeter controls the flow rate under a constant differential pressure. Inthe calorific value measurement, if the density of a sample gas changes, a flow rate errorproportional to the reciprocal of the square root of the density of the sample gas, 1/ √ρg , will begenerated, which directly affects the calorific value. Therefore, density compensation is requiredusing a density meter.For the WI measurement, a density meter is not required since the WI is a value proportional to1/ √ρg .IM 11R02A01-02E
5-25.1 Notes on WiringWARNING• Cables and wires must be connected after all power supplies are turned off.• An electrical wiring duct must not be used for the simultaneous connection of a large capacityconverter, motor, or power supply.• When cables are connected in a place with high or low ambient temperatures, use cablessuitable for the place where they are used.• When cables are used in an atmosphere where harmful gases, liquids, oil, or solvents arepresent, use cables made of materials capable of withstanding those things.• Use crimp terminals with insulated sleeve (M4 screws) for the wire ends.5.2 Wiring to Peripheral Equipment5.2.1 Power SupplyUse a 600 V insulated vinyl cabtyre cable (JIS C3312) with a cross-section area of 2 mm 2 or more, ora wire or cable that is the equivalent or better.5.2.2 GroundingConnect a grounding wire to the grounding terminal inside the panel. A grounding wire must beconnected so that the grounding resistance becomes 100 Ω or less (equivalent to JIS Class D).5.2.3 Analog Output (4 to 20 mA DC)Use a shielded twisted pair cable with a cross-section area of 0.5 mm 2 or more, or a cable that isthe equivalent or better, and install it separately from the power supply and alarm output cables andsources of electromagnetic interference. A shielded cable must be connected to the frame ground(FG) beside each of the output terminals. The load resistance from the perspective of this equipmentmust be 750 Ω or less.5.2.4 Contact OutputUse a 600 V insulated vinyl cabtyre cable (JIS C3312) with a cross-section area of 2 mm 2 or more, ora wire or cable that is the equivalent or better.The flame extinction alarm contact and orifice chamber temperature drop alarm contact must be nonvoltagedry contacts and the contact rating must be as follows.(when contact is opened, the leakagecurrent is 2 mA or less (100V AC))ContactFlame distinction alarm contactOrifice chamber temperature drop alarm contactRating100 V AC 5 A100 V AC 3 A5.2.5 Contact Input (Remote Ignition: Custom Order)A non-voltage contact must be input as a contact input signal. The contact rating is 24 V DC 1 A.The open or closed state of the input is determined by the resistance value from the perspective of thisequipment. The resistance value also includes the wiring resistance.Contact closed: 200 Ω or less. Contact open: 100 kΩ or more.IM 11R02A01-02E
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User’sManualModel CM6GGas Calorim
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iiTIPThis symbol gives information
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iModel CM6GGas CalorimeterIM 11R02A
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iii9.4 Calibration of the Density M
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1. Outline 1-1Model CM6G Gas calori
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2. Specifications 2-12.1 Standard S
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2-3Utility : Water : Approx. 0.2 l/
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2-52.2.4 OptionName Part no. Descri
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2-72.4.2 For Town Gas Application (
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2-92.4.4 Dimensions of Options1. Pr
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3-13. InstallationsObserve the foll
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4-14. Outside PipingsThe connection
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5-15. External WiringsExternal wire
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6. Construction and FunctionTypical
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6-3Standard Flow Sheet1. Town Gas A
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6.3 Differential Pressure Detection
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User's Manual for CM6G - Yokogawa

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