Azbil Kfkb, KDP User Manual

Pressure Detectors

(Meter Bodies)

Model KKP/KFKB

User's Manual

OM2-5240-1100

NOTICE

While the information in this manual is presented in good faith and
believed to be accurate, Azbil Corporation disclaims any implied
warranty of merchantability or fitness for a particular purpose and
makes no express warranty except as may be stated in its written
agreement with and for its customer.

In no event shall Azbil Corporation be liable to anyone for any
indirect, special or consequential damages. This information and
specications in this document are subject to change without notice.

© 2013 - 2020 Azbil Corporation. All Rights Reserved.

Table of Contents

Chapter 1. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

1-1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1-2. Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1-3. Instructions for instruments (Transmitters and controllers) used in conjuncion . . . . . . . . . . . . 1

Chapter 2. Structures of meter bodies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

2-1. External views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2-2. Structures and operating principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Chapter 3. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

3-1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3-2. Bracket and bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3-3. Place of installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3-4. Installation method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3-5. Pressure piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3-6. Elevation and suppression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Chapter 4. Operation method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Chapter 5. Inspection and maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5-1. Check for leak from piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

5-2. Blow and cleaning of meter body and piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

5-3. Notes for use in freesing season . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Appendix A. Specifications, Model No., External dimensions . . . . . . . . . . . . . . . . . . . . . A-1

i

Chapter 1. Description

1-1. General

The pressure detector (meter body) accepts a process pressure with its pressure receiver
element and converts the process pressure into a torque with its torque tube. The torque is
applied to a pneumatic transmitter (Model KKP or KFKB) or a pneumatic controller (Model
KFKB).
Some models of detectors have a flange incorporated with a diaphragm for connection to the
process.

1-2. Models

Measured pressures or

type of instrument

High gauge pressures Models KKP11/12/13/14

Low gauge pressures Models KKP15/16/17/18

Absolute pressures Models KKP25/26/27/28

Remote sealed diaphragm
type

Model numbers of

instruments used in

conjunction

Models KFKB11/12/13/14

Models KFKB15/16/17/18

Models KFKB25/26/27/28

Models KKP71/72/73/74/75/76
Models KFKB71/72/73/74/75/76

Operator’s Manual

used in conjunction

OM2-5220-0000 (KKP)

OM2-6220-0000 (KFKB)

1-3. Instructions for instruments (Transmitters and controllers) used in

conjuncion

For the instructions for instruments used in conjunction, refer to respective Operator’s
Manuals which cover the operating principles, service and unit replacement procedures, and
calibration and adjustment procedures of these instruments.

1

Chapter 2. Structures of meter bodies

2-1. External views

Although external views of meter bodies differ by models as shown in Fig. 2-1, the bracket
mounting section and instrument connection section are identical for all models.

Models 11/12/13/14 Models 15/16

Models 17/18
Models 25/26/27/28

Models 71/72/73/74/75/76

(Meter bodies as coupled to respective instruments)

(Meter body as coupled to instrument)

Fig. 2-1.

2

2-2. Structures and operating principles

The operating principles of the pressure detectors (meter bodies) are illustrated in Fig. 2-2
through Fig. 2-7.

Fig. 2-2. Operating principle of Model 11/12/13/14

meter body (Bourdon element)

Fig. 2-4. Operating principle of Model 17/18 meter body

(Bellows element)

Fig. 2-3. Operating principle of Model 15/16 meter body

(Bellows element)

Fig. 2-5. Operating principle of Model 25/26/27/28

meter body

Fig. 2-6. Operating principle of Model 71/72/73/74

meter body (Bourdon element)

Fig. 2-7. Operating principle of Model 75/76 meter body

(Bellows element)

3

The process pressure is fed through the flange or cover (and via the seal liquid in the case of a
remote-sealed type) to the pressure receiver element which exercises a rotational force on the
torque arm. The torque arm drives the torque tube through which a torque force representing
the process pressure is applied to the beam of the instrument.
The reference-pressure chamber of the absolute-pressure detector (meter body) is kept
vacuum.

4

Chapter 3. Installation

3-1. General

The meter body (detector), together with the instrument (transmitter) coupled to it, can be
installed on a 50-mm pipe stanchion by using the accessory bracket and U-shape bolt.
Model 61/62 meter body can be installed simply by fixing its flange to the process.

3-2. Bracket and bolts

The bracket and bolts for installation are supplied accompanying the meter body.

3-3. Place of installation

When selecting a place of installation for the instrument, take into consideration the matters
related to instrument inspection, maintenance, longevity, and operation safety as follows:

(1) Select a place where temperature change is small (within the limits of –30 °C to +80 °C).

Avoid a place where the instrument is exposed to high temperature by radiation from a
source of heat.

When water is measured, pay attention to freezing which may cause damage to the meter

body. Provide appropriate means to guard against freezing.

(2) Select a place where is reasonably free from humidity and vibration.

(3) Be sure to provide spaces for inserting a screwdriver for adjustment and span change.

Fig. 3-1.

5