MM850402-06 Gas Analysers 3000-4000 - om.gr

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Instruction Manual MM850402 ed. 066 CONNECTIONS6.1 Electro-Pneumatic ConnectionsTo prepare the instrument for operation connect the sampling probe to the instrument:• Plug the pneumatic connector of the probe to the GAS INLET connector. If you are using the gas samplingprobe with Draft option, connect also its connector to the instrument Pressure/Draft inlet.• Plug the probe temperature sensor plug to the pertinent connector.• For more accurate readings and efficiency calculations, plug the remote air temperature Pt100 sensor tothe 3 pin connector on the left side of the instrument.Tgas inputINLET – gas inputP1 – Draft/PressureinputP2 – differentialpressure inputBattery chargerpneumatic portsRS232 – Externalprobes inputPt100 Tair inputRight sideCAUTIONWHEN YOU PERFORM THE COMBUSTION TEST BE SURE THAT:BOTH THE DRAFT/PRESSURE INPUT (P1) AND THE GAS INPUT (INLET) ARE CONNECTED TO THE INSTRUMENT;THE CAP OF CONDENSATION DRAINAGE MUST BE FIRMLY ON SEAT;THE AIR FILTER MUST BE CLEAR.6.2 Gas Probe PositioningThe measurement site should be arranged at a distance of 2xD behind the exhaust gas connection pipe, where D= diameter of the exhaust gas connection pipe.To position the sampling probe in the exhaust gas pathway a hole of 11/16mm should be drilled and the retainingcone of the sampling probe firmly screwed in it.The retaining screw in the cone enables the probe to be easily moved in order to locate the core flow, normallycorrespondent to the centre of the section of the stack.The flue gas and exhaust gas pathways, must be checked for gas-tightness before carrying out a measurementand, if necessary, non gas-tight points should be sealed.To locate the gas core flow, insert progressively the sampling probe and read the maximum value of temperature.22
Instruction Manual MM850402 ed. 06Tair probeCAUTIONFOR A CORRECT GAS ANALYSIS, NO AIR MUST REACH THE FLUE GAS AS A RESULT OF NON-GAS-TIGHT CONNECTION POINTSBETWEEN THE HEAT PRODUCER AND THE MEASUREMENT SITE (PROBE).THE FLUE GAS AND EXHAUST GAS PATHWAYS MUST BE CHECKED FOR GAS-TIGHTNESS BEFORE CARRYING OUT AMEASUREMENT, AND IF NECESSARY NON-GAS-TIGHT POINTS SHOULD BE SEALED.6.3 Connecting to a PCThe instrument can operate with a personal computer through the RS232 serial port. For this, you must use theRS232/USB adapter supplied.RS232/USB AdapterBB5302116.3.1 RS232/USB adapter installationThe RS232/USB adaptor can be used to directly connect the instrument to a computer without the RS232 serialport, but with the USB port only. The adaptor can be used with PCs under the operating systems WindowsXPand Windows 95/98. Depending on the configuration of the computer, the adaptor could be automaticallyidentified or not. If the adaptor isn’t properly identified you’ll need to manually install its driver, that you can find onthe instrument’s software CD.23
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