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Azbil KFPA Скачать руководство пользователя страница 43

Azbil Corporation

Model 

KFPA

, 

KFTA

 -  Field Mount type Pressure Indicating Controllers

37

Manual control 
pressure does 
not fall

Valve stem of manual 
regulator has collected dirt or 
dust.

Disassembly and clean manual regulator.

Zero point 
change 
unreasonally 
when range is 
changed.

Parallelism adjustment of 
transmitter beam is poor.

Perform parallelism adjustment and calibration.

Output is 
unstable or 
pulsates.

Air is leaking.

Tighten pneumatic piping and gaskets.

Assembly of nozzle flapper is 
improper.

Reassemble the nozzle.

Pilot relay is stained.

Remove and clean pilot relay. If necessary replace it.

Symptom

Probable cause

Troubleshooting

Содержание KFPA

Страница 1: ...Field Mount type Pressure Temperature Indicating Controller Model KFPA KFTA User s Manual OM2 6110 0100...

Страница 2: ...ms the implied warranties of merchantability and fitness for a particular purpose and makes no express warranties except as may be stated in its written agreement with and for its customer In no event...

Страница 3: ...amage that may have occurred during transportation This equipment was tested under a strict quality control program before shipment If you find any problem in the quality specifications please contact...

Страница 4: ...damage it or cause physical injury The glass indicator may break if hit with a tool or other object and cause physical injury This transmitter is heavy During installation please ensure that your foo...

Страница 5: ...unit 10 3 Installation 3 1 Air piping 11 3 2 Connection method 11 3 3 Pressure element 12 3 4 Temperature element 13 4 Operation 4 1 Preparations for operation 15 4 2 Pressure control 15 4 2 1 For li...

Страница 6: ...30 5 5 1 Pressure element 30 5 5 2 Temperature element 31 6 Maintenance and troubleshooting 6 1 Routine inspection 32 6 2 Controller unit 33 6 3 Pilot relay 34 6 4 Removing the AUTO unit when in manu...

Страница 7: ...er in the local mode with the manual setting knob this knob is adjustable either inside the casing or from outside of the casing or in the remote mode with an external pneumatic signal These instrumen...

Страница 8: ...in Differential gap 1 to 100 Manual reset 20 to 100 kPa 0 2 to 1 0 kgf cm air pressure setting Batch switch Set pressure 60 to 110 kPa 0 6 to 1 1 kgf cm Air pressure specifications Supply air pressure...

Страница 9: ...terial SUS316 Bellows receiving air pressure type is phosphorus bronze Connection Process G1 4 RF1 4 female Pneumatic signal Rc1 4 PT1 4 or NPT1 4 female Measuring range 50 C to 50 C min 0 C to 500 C...

Страница 10: ...operation unit Balance bumpless type Manual pressure setting range 10 to 130 kPa 0 1 to 1 3 kgf cm Air consumption 3 min N Air set Pressure regulator valve with filter 40 mm 0 to 200 kPa 0 to 2 kgf c...

Страница 11: ...ms the proportional reset and rate actions on the deviation amount in order to produce a pneumatic control output signal 2 2 Descriptions of mechanisms 2 2 1 Deviation generating mechanism The deviati...

Страница 12: ...ozzle back pressure is boosted by the pilot relay and delivered as the pneumatic output signal of the controller This output signal is led to the feedback chamber in order to return the flapper to noz...

Страница 13: ...control operations a On Off action The nozzle back pressure is directly applied to the pilot relay The control operation is done in an ON OFF mode in response to the open or closed state of the nozzle...

Страница 14: ...roduced by a pressure regulator is applied to the reset chamber d Addition of external reset This provision is such that a reset signal as explained in the above item c is applied externally The exter...

Страница 15: ...ual controller output pressure When in the manual mode the lever is set in the M position the output pressure of the regulator is led to the reset chamber of the controller unit and at the same time i...

Страница 16: ...input signal is indicated as a set point signal on the indicator scale 2 2 5 Batch switch unit When the output has exceeded a preset limit a relay trips so that the reset pressure cannot increase abov...

Страница 17: ...nifold of the instrument Note Use of pipe sealing agent may be harmful to pipes If sealing agent is required sparingly apply it to the male connector Output air Connect the pipe for the control valve...

Страница 18: ...ion should be paid to the following points 1 Provide a stop valve in the pressure connection tube so as to allow maintenance operation without interrupting the process 2 Provide a cock for drain and a...

Страница 19: ...ate the heat sensing section in the center of the pipe and along the fluid flow whenever possible Note Pay attention to the mounting method and the inserted length of the sensing bulb protecting tube...

Страница 20: ...ameter d mm Protecting tube diameter D mm Length below screw below flange L mm Specification of screw Flange ratings Min Max 0 50 145 d 12 7 D 17 200 1000 R1 PT1 or R3 4 PT3 4 JIS 10K 25 mm 50 100 50...

Страница 21: ...urement See Figure 15 and Figure 16 In case of the clean and non corrosive liquid observe the following instruments for operation of the instrument 1 Open the breed valve while keeping the block valve...

Страница 22: ...rials from inside the tube 2 Close the blow down valve Condense the vapor to fill the pressure tap tube and the siphon Open the shutoff valve to start up the operation Figure 16 Piping for measuring d...

Страница 23: ...Controllers 17 Figure 18 Piping for measuring vapor pressure Shutoff valve Blow down valve Siphon Stop valve Provide a siphon in the pressure tap line to prevent vapor flow Fully opened the valve duri...

Страница 24: ...desired value When the setting knob outside the case is provided setting can be done by turning the knob pressing it toward the door 4 If the check button is pushed with the AUTO MAN switch set in the...

Страница 25: ...output to a pressure gauge 2 Perform the following settings and apply a deviation input to saturate the output Proportional band 50 Reset time 0 02 min 3 Decrease the output to the desired value by t...

Страница 26: ...ng pin through the adjusting pin hole 4 If there is a gap difference between the ends of the set point pointer and the measuring pointer eliminate the difference by turning the set point pointer adjus...

Страница 27: ...at the change in the output pressure becomes less than 0 8 kPa 6 mmHg when the proportional band is changed from 20 to 500 Turn the adjusting pin clockwise if the output increases when the band is cha...

Страница 28: ...n 7 Measure the time required by the controller output to change from 53 3 to 60 kPa 400 to 450 mmHg 8 Make sure that the measured time is not longer than 120 60 sec 9 Adjust the position of the reset...

Страница 29: ...Pressure Indicating Controllers 23 10 If necessary adjust the position of the rate unit index Figure 22 Rate action calibration 600 300 63 2 t n2 n1 n1 n2 mmHg Rate action fully effected at this poin...

Страница 30: ...ointer on the scale 2 Turn fully clockwise the set point dial and set it to the yellow edge line of the INC MEAS DEC OUT scale Then perform a procedure the same as step 1 3 Adjust the deviation link l...

Страница 31: ...t type Pressure Indicating Controllers 25 6 Repeat steps of 4 and 5 so that in each of the cases in which the set point dial is set to the white and the yellow line the output will be somewhere within...

Страница 32: ...ck link adjusting pin also rotates 360 Make the pin slot horizontal at the side where the link falls when the adjusting pin is turned clockwise 2 Set the set point pointer at 50 Set the differential g...

Страница 33: ...ferential gap dial to the 100 position on the right or left side Adjust the feedback link adjusting pin so that the output rises at the setting point to lower the output for once slightly open the fla...

Страница 34: ...link and the hole of the span adjusting screw As the connection position is set farther from the center of the element the span becomes larger 3 Linearity adjustment a Check the linearity at the 50 s...

Страница 35: ...e becomes 98 4 kPa 738 mmHg The span is decreased as this knob is turned clockwise as viewed from the left side c Repeat the above procedures so that both zero point and span are correctly set Adjustm...

Страница 36: ...full close maximum integration time 5 5 1 Pressure element Zero adjustment Turn the adjusting knob on the travel link so that the PV pointer indicates 0 when the element input is set at 0 Span adjustm...

Страница 37: ...0 and 100 F S of the temperature range b An accuracy of 1 F S or better is required for the constant temperature bath as calibrated with a standard thermometer c Before starting calibration completely...

Страница 38: ...the air supply drain the filter and compressor the air cleaning and dehumidifying equipment and the tank 3 Check for any clogging of the filter and the restriction inside the instrument Replace the cl...

Страница 39: ...ws of the controller unit take out the controller unit and clean the nozzle 3 For assembly follow the disassembly procedure in the reverse order Re adjust the control unit after re assembly Confirm th...

Страница 40: ...with an appropriate solvent such as petroleum naphtha or chlorosene Do not apply any solvent to the diaphragms To let the solvent to pregnate through the sheet surface push valve system 2 in the direc...

Страница 41: ...n 1 Balance the A M output pressure and transfer operation to the M mode 2 Apply a deviation in the direction that the AUTO output pressure decreases Turn the SP knob so that SP becomes smaller than P...

Страница 42: ...t circuit is correct and that O rings of connecting section are properly attached Then firmly tighten the unit There is leakage from pilot relay diaphragm Remove pilot relay check diaphragm and in cas...

Страница 43: ...lator Zero point change unreasonally when range is changed Parallelism adjustment of transmitter beam is poor Perform parallelism adjustment and calibration Output is unstable or pulsates Air is leaki...

Страница 44: ...ual reset With manual reset unit Without rate 2 3 4 1 1 1 With external reset or with manual reset With batch switch General Deviation unit PB setting dial Reset unit Rate unit Cascade rec unit Detect...

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Страница 48: ...o your use 3 Measures to be taken to secure the required level of the reliability and safety of your Equipment in your use Although azbil is constantly making efforts to improve the quality and reliab...

Страница 49: ...argin of your machine or equipment you are required to renew any Azbil Corporation s products every 5 to 10 years unless otherwise specified in specifications or instruction manuals System products fi...

Страница 50: ......

Страница 51: ...Document Number Document Name OM2 6110 0100 Field mount type pressure temperature indicating controller Model KFPA KFTA User s Manual Date Issued Edited by 15th edition Jan 2020 Azbil Corporation...

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