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Summary of Contents for Azbil KFPA
- Page 1 OM2-6110-0100 Field Mount type Pressure (Temperature) Indicating Controller Model KFPA/KFTA User’s Manual...
- Page 2 In no event shall Azbil Corporation be liable to anyone for any indirect, special or consequential damages. This information and specifications in this document are subject to change without notice.
- Page 3 Denotes a potentially hazardous situation which, if not avoided, could result in death or serious injury. CAUTION Denotes a potentially hazardous situation which, if not avoided, could result in operator minor injury or damage to device. Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers...
- Page 4 Strict product controls were exercised during the manufacture of this transmitter. Never modify the transmitter in any way. In-plant modifications may result in damage to the transmitter or to property and human safety. Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers...
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Page 5: Table Of Contents
Table of Contents 1: Description 1-1: General......................1 1-2: Structure ......................1 1-3: Specifications....................2 1-3-1: Common specifications....................2 1-3-2: Specifications of pressure element................3 1-3-3: Specifications of temperature element ..............3 1-3-4: Specifications of accessories..................4 2: Indicating controller section 2-1: General...................... - Page 6 Table of Contents 5-5: Detecting element .................... 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 manual operation ........35 6-5: Troubleshooting....................
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Page 7: 1-1: General
1-2: Structure The KF instrument is comprised of three major units, namely, casing, circuit board on which various units are mounted, and pressure sensor (or temperature sensor). Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... -
Page 8: 1-3: Specifications
IEC IP54, NEMA3 Aluminium diecasting, dark beige, acryl Case baking Glass fiber reinforced polyester resin, Door dark beige Weight Approx. 5.5 kg (for PI indicating controller, excluding the element) Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... -
Page 9: 1-3-2: Specifications Of Pressure Element
Material for Heat sensitive section SUS304 wetted section SUS316, SUS316L or SUS304 Protecting tube Refer to “3-4: Temperature element” on page 13 for details Material for lead and SUS304 armored tube Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... -
Page 10: 1-3-4: Specifications Of Accessories
0.95 /min(N) (at output pressure 140 kPa {1.4 kgf/cm²}) Protecting tube: Use only for the temperature indicating controller Flange type JIS 10K, 20K, ANSI 150, 300 Screw-in type R3/4, 1 (PT3/4, 1) Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... -
Page 11: 2: Indicating Controller Section
(SP value indicated by the set point pointer) and controls the position of the flapper with respect to the nozzle via a control link. Deviation Deviation link Set point pointer (green) Link Measuring pointer (red) Figure 1 Figure 2 Model KFPA, KFT - Field Mount type Pressure Indicating Controllers... -
Page 12: 2-2-2: Control Mechanism
(feedback link). Proportional band Flapper adjusting pin setting dial Stopper pin Index Dial stopper Feedback link adjusting pin Link length adjusting screw Reset room Feedback room Figure 3 Model KFPA, KFT - Field Mount type Pressure Indicating Controllers... - Page 13 The differential gap width is adjustable as required. SP (Index) SP (Index) Increase Increase Operational gap Operational gap INC. MEAS. INC. OUT INC. MEAS. DEC. OUT Figure 6 Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers...
- Page 14 Deviation link Pressure Integral regulator Integral (reset) OUTPUT (reset) chamber chamber Feedback Atmospheric chamber pressure Air supply OUTPUT Proportional + Manual reset ON/OFF action Differential gap action Figure 7 Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers...
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Page 15: 2-2-3: Manual Controller Unit
Loading pressure knob chamber Feedback Controller output chamber Check Button Output Air supply pressure Output air Balance check button pressure gauge Figure 8 Figure 9 Diagram of manual controller unit Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... -
Page 16: 2-2-4: Pneumatic Signal Receiver Unit (Set Point Pointer)
Preloading for a batch process can be done by applying an external preload pressure to the connector block (RES port) of the instrument. Control pneumatic pressure Reset unit Atmosphere (or 20 to 100 kPa {0.2 to 1.0 kgf/cm preload pressure) Figure 11 Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... -
Page 17: 3: Installation
External reset signal SUP: Supply air pressure - When in manual reset external reset signal connection port is connected to SUP through a pipe. Figure 12 Pneumatic piping connection port Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... -
Page 18: 3-3: Pressure Element
(2) Provide a cock for drain and air release. In case of a horizontal piping, provide a gradient of 1/100 or more. (3) If the process pressure largely pulsates or varies, provide a pulsation preventing means to smooth out pressure. (Please consult an Azbil Corp. representative on a special case.) Stop valve... -
Page 19: 3-4: Temperature Element
1 inch or 3/4 inch R(PT) (C) Flange-connected bulb with well (C) Flange-connected bulb with well Capillary tubing Lead pipe 1 inch JIS 10K - 25 mm flange Figure 14 Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... - Page 20 0 ~ 300 100 ~ 400 d = 22, R1(PT1) or 0 ~ 400 JIS 10K, 20K 40 mm D = 27 1NPT 0 ~ 500 ANSI 150, 300 1½ mm Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers...
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Page 21: 4: Operation
Pay caution in the case of a vertical tube. Since, note that the liquid pressure head affects the measured value. Blow-down valve Shut off valve Figure 15 Piping for measuring liquid pressure Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... -
Page 22: 4-2-2: For Steam Measurement
Condenser Install a condenser in the pressure tap line to return drain into the process line. Stop valve Blow-down valve Shutoff valve Figure 17 Piping for measuring wet gas pressure Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... - Page 23 Stop valve Fully opened the valve during the operation so as to allow easy flow of vapor or condensed liquid Figure 18 Piping for measuring vapor pressure Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers...
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Page 24: 4-3: Manual Operation
(A) position. (Shift the lever quickly and completely until it comes to the end position.) (5) In auto operation, set P.I.D. to suit the process characteristics. (6) For switching to manual operation, follow in the reverse order the procedure (4) Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... -
Page 25: 4-5: Unusing The Rate Action
(3) Decrease the output to the desired value by turning the setting screw. The output decreases as the screw is turned counterclockwise. (4) When the function as a batch controller is not required, turn the setting screw fully clockwise. Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... -
Page 26: 5: Calibration And Adjustment
If the motion is not smooth, temporarily loosen the clamping screw for adjustment. Then, tighten the screw firmly. Connect a pressure gauge to the OUT connection port, and a supply air 140 kPa {1.4 kgf/cm²} to the SUP connection port. Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... -
Page 27: 5-2: Controller Mechanism
2: For change between INC. MEAS. INC. OUT (direct action) and INC. MEAS. DEC. OUT (reverse action), free the dial stopper by loosening its clamping screw, turn the dial to the opposite action range, and then fix the dial stopper. Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... -
Page 28: 5-2-2: Calibration Of Reset And Rate Units
(8) Rapidly change the rate dial to 2 min. and measure the time t in which the output change to 63.2% of the value of n (9) Make sure that t W is not longer than 120 + 60 sec. × Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... - Page 29 (10)If necessary, adjust the position of the rate unit index. Rate action fully effected at this point 63.2% mmHg Rate action calibration Rate action calibration Figure 22 Rate action calibration Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers...
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Page 30: 5-2-3: Other Calibration And Adjustment Procedures
(5) Set the set point dial to the yellow line, and adjust the deviation link length so that the output is somewhere within a range of 10 to 130 kPa {0.1 to 1.3 kgf/cm²}. Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... - Page 31 (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 the range of 10 to130 kPa {0.1 to 1.3 kgf/cm²}. Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers...
- Page 32 Differential gap dial Figure 24 (5) With the flapper adjusting pin, the output rising points recorded in steps (2) and (3) with the set point. Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers...
- Page 33 (7) Repeat steps (4), (5) and (6) so that the output rising points falls within the gap of set point (SP) + 1.5% F.S. at entire range of the differential gap dial. Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers...
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Page 34: 5-3: Adjustment Of Set Point Indication
(c) A change in the travel link length will cause a shift of zero point. So, loosen the zero adjusting screw, align the pointer to the scale and then fasten the screw. (d) Check again the zero and span in the method mentioned before. Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... -
Page 35: 5-4: Transmitter Unit
(c) If it is more than 59.9 kPa {449 mmHg}, turn the knob (A) clockwise. In this case, about 10% F.S. movement of the zero point is needed per about 1% F.S. deviation between the PV pointer and the transmitted pressure. Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... -
Page 36: 5-5: Detecting Element
(turn it counterclockwise as viewed from the element). (3) The zero point will be shifted when the travel link length is changed. Re-align the pointer to the zero scale position by loosening the zero adjusting screw. Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... -
Page 37: 5-5-2: Temperature Element
Note that a longer time will be required for an element with protecting tube or a high-temperature element (400°C or 500°C type with sealed gas). Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... -
Page 38: 6: Maintenance And Troubleshooting
Replace the clogged filter. If the restriction is clogged, clean it with a 0.12 mm wire. Controller unit Pilot relay (controller output) Detector element Pilot relay (transmitter) Filter/restriction (controller) Filter/restriction (transmitter) Figure 28 Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... -
Page 39: 6-2: Controller Unit
Confirm that the O-rings are placed. Securely tighten the unit with the four screws and check that there is no air leakage. Nozzle *: O-ring Figure 29 Controller unit Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... -
Page 40: 6-3: Pilot Relay
Do not apply any solvent to the diaphragms. To let the solvent to pregnate through the sheet surface, push valve system (2) in the direction of compressing conical spring (5). Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... -
Page 41: 6-4: Removing The Auto Unit When In Manual Operation
(a) Disconnect the link of the element and make zero the AUTO output pressure by moving the PV pointer. (b) Move the flapper away from the controller so that the nozzle back pressure becomes zero. Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... -
Page 42: 6-5: Troubleshooting
Air is leaking from gasket. Firmly fix it to the base. Manual control Supply pneumatic pressure is Supply proper supply air pressure. pressure does not applied or below 140 kPa not rise. {1.4 kgf/cm²}. Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers... - Page 43 Tighten pneumatic piping and gaskets. unstable or Assembly of nozzle flapper is Reassemble the nozzle. pulsates. improper. Pilot relay is stained. Remove and clean pilot relay. If necessary replace it. Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers...
- Page 44 Transmitter unit Controller output pilot relay Output gauge Transmitter pilot relay T.OUT RESET C. OUT (preload) Without manual controller unit For ON/OFF controller For differential gap controller Figure 31 Circuit diaphragm Model KFPA, KFTA - Field Mount type Pressure Indicating Controllers...
- Page 48 Warranty period and warranty scope 1.1 Warranty period Azbil Corporation’s products shall be warranted for one (1) year from the date of your purchase of the said products or the delivery of the said products to a place designated by you.
- Page 49 Although acceleration of the above situation varies depending on the conditions or environment of use of the products, you are required not to use any Azbil Corporation’s products for a period exceeding ten (10) years unless otherwise stated in specifications or instruction manuals.
- Page 51 Document Number: OM2-6110-0100 Document Name: Field mount type pressure (temperature) indicating controller Model KFPA/KFTA User’s Manual 15th edition Jan. 2020 Date: Azbil Corporation Issued/Edited by:...
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