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Operation manual of DMP305X series

Operation manual of DMP305X series
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Pressure/ differential pressure transmitter quick installation manual Safety precautions ! Pressure / differential pressure transmitter should be installed by professional engineers or qualified technical personnel, product specifications and important information provided on the label should be carefully read before installation and wiring operations. ! Pressure / differential pressure transmitter is powered by an external power supply, the power supply circuit should comply with energy-limiting circuit by relevant standards, and pay attention to the high voltage circuits there may exist. ! The maximum static pressure overload has been stated on the product label, the process maximum pressure should not exceed the full span of sensor. ! Using pressure / differential pressure transmitter in hazardous areas, installation, use and maintenance should also comply with the operation manual and relevant requirements of national standards. ! Attention please! Disassemble the instruments under the condition of normal atmospheric pressure only. Air flow measurement Guiding pressure tube uptilt 45°, the installation location should be lower than the process pipeline. Isolation tank and multiple shut-off valves should be increased, open the drain/vent valve periodically, clear the residual gas and liquid in the guiding pressure tube to ensure accuracy. Sealed container level measurement Product usage Pipeline pressure measurement-pressure transmitter For sealed container level measurement, isolation tank and multiple shut-off valves should be increased, open the drain/vent valve periodically, clear the residual gas and liquid in the guiding pressure tube to ensure accuracy. For high-temperature steam measuring, more than half-tube cooling water should be preinjected in the condenser. After the steam pipes are stable, slowly open the shut-off valve to start measuring. Pipeline pressure measurement-differential pressure transmitter Open container level measurement-single flange level transmitter f > For open container level measurement, media compatibility should be considered, install on location where the liquid level and temperature changes stably to improve accuracy. v_y Sealed container level measurement-single flange level transmitter Differential pressure measurement Single flange diaphragm system used for sealed container level measurement, Isolation tank and multiple shut-off valves should be increased, open the drain/vent valve periodically, clear the residual gas and liquid in the guiding pressure tube to ensure accuracy. Differential pressure transmitter is used for differential pressure measuring, especially suitable for micro pressure measurement of hydrostatic pressure such as filter and equipment leakage test and improving accuracy. Media in process pipeline or guiding pressure tube may be effected by the surrounding environment, and may freeze. So anti-freezing measurements are needed. Install pressure transmitter Steam flow measurement Guiding pressure tube uptilt 45°, the installation location should be lower than the process pipeline. Isolation tank and multiple shut-off valves should be increased, cooling liquid should pre-injected into the guiding pressure tube, and open the drain/vent valve periodically, clear the residual gas and liquid in the guiding pressure tube to ensure accuracy. Pressure transmitter- installation Direct installation Liquid flow measurement Guiding pressure tube tilt down 45 °,the installation location should be lower than the process pipeline. isolation tank and multiple shut-off valves should be increased, open the drain/vent valve periodically, clear the residual gas and liquid in the guiding pressure tube to ensure accuracy. Plate mounting bent bracket Pipe mounting flat braket ^ if there is any question, please contact Shanghai LEEG instruments Co.,Ltd. Tel: 86-21-31261976 Fax: 86-21-31261975 Email: info@leeg.cn, sales@leeg.cn

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Pressure/ differential pressure transmitter quick installation manual Process connection Straight thread connection Electrical connection accessories Aviation plug (with cable) Taper thread connection Lable Signal connection 4-20mA two wires(module terminals-four terminals) © Power supply+ is connected with transmitter terminals+ © Signal+ is connected with transmitter terminals© Signal- is connected with power supply- 4-20mA two wires, intrinsic safety(module terminals-four terminals) © Power supply+ is connected with transmitter terminals+ © Signal+ is connected with transmitter...

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Pressure/ differential pressure transmitter quick installation manual Power supply Full span adjustment Independent linear direct current power supply is suggested to be adopted for the power supply of pressure transmitter, over large resistive load will result in a large pressure drop, so it requires to calculate the all-in resistance of signal cable, display meter and other record and display equipment, to ensure the voltage provided to the pressure transmitter accord with normal operating requirements. ■ Standard current signal output: 12-30VDC, ■ Current signal output with HART:...

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Pressure/ differential pressure transmitter quick installation manualDepot repair Please finish the following steps before the depot repair: ■ Removal of all the residues which would be harmful to human health, such as inflammable, poisonous, cancerigenic and radioactive substances. Ado not return the instruments if can not ensure the dangerous residues are removed, eg: the dangerous residues permeate into cracks or spread to the plastic. ■ The instrument is not restrained of WEEE instruction 2002/96/EG and laws of relevant countries. ■ Please pass the instrument to specialized recycling...

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