Contents Handling Precautions・・・・・・・ 1.General・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ P1 2.Principle of Measurement ・・・・・・・・・・・・・・・・・・・・・・・・・・・ P2 3.Components and their Functions 3-1 Probe transmitter・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ P3 4.Mounting 4-1 Selection of the sampling position・・・・・・・・・・・・・・・・・・・・ P4 4-2 Selection of the mounting position of the panel・・・・・・・・・・・・・・ P4 4-3 Mounting of guide pipe・・・・・・・・・・・・・・・・・・・・・・・・・・ P5 4-4 Mounting of Probe Transmitter ・・・・・・・・・・・・・・・・・・・・・・...
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Handling Precautions Warning (1) When installing wiring around the terminal section of the analyzer or performing Maintenance inside the analyzer, take care to avoid electric shock. Turn the power off without fail when performing maintenance of electrical parts. (2) Be sure to connect the grounding cable to the grounding terminal to reduce the possibility of electric shock.
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1. General The Oxygen Analyzer LP-30H is a device with a sensor (sensor cell),fitted at the tip of a probe, heated to a high temperature by a heater, and inserted in the of a boiler or various types of furnace, to measure automatically the oxygen partial pressure in combustion exhaust gas.
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This solid electrolyte (sensor cell) is fitted at the tip of the probe transmitter of the LP-30H Oxygen Analyzer and heated to 650℃ Sample gas flows through a special filter, diffuses and contacts with the cell, and electromotive force, corresponding to the O₂...
3. Components and their Functions 3-1 Probe Transmitter C E L L K Specifications + - + - MODEL LP-30H Measurement principle Zirconia H E A T E R Response Less than 10sec.(90%F.S) Changing the Calibration gas Warm-up time Approx.20min. Approx.2 ...
4. Mounting Mounting, plumbing and wiring of LP-30H type Oxygen Analyzer will be shown. Wrong selection of mounting place, and inappropriate mounting work will cause unexpected trouble, deterioration in performance of the analyzer, and also damage in the equipment later, therefore sufficient understanding of the contents of the following articles before undertaking the work is necessary.
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7) Where the storing temperature of the standard gas cylinder is specifically less than 35℃, and there is no exposure to the direct rays of the sun and it is well ventilated. 8) Where the distance from the transmitter is shorter than 100m. (A shorter distance is preferable to save the cost of plumbing and wiring work and to reduce the plumbing resistance) 9) Where the door of the panel can be opened and still allow enough space for maintenance.
4-3 Mounting of guide pipe Horizontal mounting (on boiler wall, etc.) Note) ・Guide pipe and steel skin of the furnace wall shall be fixed by welding the whole periphery. ・Mounting angle of the guide pipe shall be 5~10 degrees downward to the horizontal axis. - 6 -...
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Vertical mounting (on ceiling of boiler, etc.) - 7 -...
4-4 Mounting of Probe Transmitter The probe transmitter is mounted according to the mounting drawing but the following conditions should be observed. 「Caution」 (1) Asbestos packing (accessories) should be mounted so as not to slip out. (2) Bolts and nuts (accessories) should be tightened uniformly so as to prevent uneven tightening.
6. Inspection and Maintenance 6-1 Precautions for inspection and maintenance 「Caution」 (1) Remove / install the probe transmitter while the plant is shut down. If you do remove / install the probe transmitter during plant operation, please pay attention to the following points. ①...
Calibration of indication (about once a month) ・ Carry out calibration of indication in accordance with DGO (Control Unit) Instruction Manual, and keep a record of (K) thermo-electromotive force and cell electromotive force and response time for ZERO gas and AIR. By this record, the frequency of sensor cell change can be determined.
・ Standard of exchanging time of the sensor cell The time to exchange the sensor cell is as follows. ① When the indication and calibration with the calibration gases ② When the response time becomes too much to handle in practical purpose. For example ・...
6-5 Periodic inspection(once a year, or according to circumstances) ・ Inspection and cleaning of filter unit (according to circumstances) When the movement of O₂ indication in the recorder chart becomes dull compared with the previous movement, it is probable that the filter unit will get clogged, so check the filter unit.
7. Exchange (removal) of filter unit Filter unit & sensor unit external view ・ Probe transmitter main body and filter unit are connected with screw joint. ・ Since the screw joint is tightened with a hex socket head bolt, use a hex wrench to remove 7-1 Replacing Filter Unit The filter unit consists of ④,⑤,⑥,⑦,⑧,⑨...
Fix the unit with hexagon socket head bolt ⑨. At this time, wrap and fix the tip of PT lead ⑩ on one of the bolts. Probe tip external view 7-2 Sensor Unit Replacement 1) Remove the filter unit according to paragraph 1. 2) Remove sensor unit ③...
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Measures when the boiler is stopped When the boiler is stopped, if you clean the inside of the boiler, or if there is a risk that a large amount of dust may fall during cleaning and inspection, product the probe transmitter according to the following procedure. (1) Turn off the O meter power supply.
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Repairs request slip for measuring apparatus ENERGY’s entry column Please Notice for customers following contents through facsimile or telephone. Measuring instrument repair request sheet (product send-back sheet) If the contents of the repair request are insufficient when sending your product back to ENERGY for repair, it takes a long time to perform the acceptance inspection, causing inconvenience in delivery.
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ENERGY SUPPORT CORPORATION Private description Industrial system Division : 0568-67-1842 ※ To customer Tel. : 0568-67-2743 ※ In terms of contents mentioned Address : 1,Aza Kamikobari,Inuyama, below please get in touch with us by means of FAX or Telephone. Aichi 484-8505...
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Description in this operation manual is subject to changes without prior notice. For advice or detail of our products and services, contact the Technical Service Team. Industrial System Division...
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