Yokogawa FS20 User Manual

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Instruction Manual

Model FF20 Flow fittings

Model FS20 Subassembly flow fittings

IM 12B6K1-01E-E

7th edition

1. INTRODUCTION .........................................................................................................1

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

1-2. Features ..............................................................................................................1

2. UNPACKING AND CHECKING ..................................................................................1

2-1. Unpacking and inspection ...................................................................................1

2-2. Mounting location ...............................................................................................1

2-3. Specifications ......................................................................................................2

2-3-1. General specifications ..............................................................................2

2-3-2. Functional specifications...........................................................................3

2-4. Model and codes ................................................................................................4

2-4-1. Flow fittings ..............................................................................................4

2-4-2. Subassemblies ......................................................................................... 5

2-5. Dimensions .........................................................................................................6

2-5-1. Fittings .....................................................................................................6

2-5-2. Subassemblies ......................................................................................... 7

3. PIPING AND INSTALLATION .....................................................................................8

3-1. General ...............................................................................................................8

3-2. Piping ..................................................................................................................8

3-2-1. Mounting in a sample line .........................................................................8

3-2-2. Mounting in a shunt line ...........................................................................8

3-2-3. Mounting in a sample line with extra connection for liquid cleanser ..........9

3-3. Installation ...........................................................................................................9

3-3-1. Mounting for fitting ...................................................................................9

3-3-2 Mounting the subassembly .....................................................................10

3-4. Sensor mounting ...............................................................................................10

3-4-1. General ..................................................................................................10

3-4-2. Mounting in a 1-hole design ...................................................................11

3-4-2. Mounting in a 3- and 4-hole design ........................................................11

4. ACCESSORIES..........................................................................................................11

4-1. General .............................................................................................................11

4-2. Mounting kit for BELLOMATIC electrodes .........................................................11

4-3. Mounting kit for sterilisable applicaitons ............................................................12

4-4. Mounting kit for top refillable electrodes ............................................................ 13

4-5. Cleaning systems ..............................................................................................13

4-5-1. General ..................................................................................................13

4-5-2. Selection criteria ..................................................................................... 14

4-5-3. Mechanical cleaning ...............................................................................14

4-5-4. Chemical cleaning ..................................................................................15

4-6. Salt bridge ........................................................................................................16

5. MAINTENANCE .........................................................................................................17

5-1. General .............................................................................................................17

5-2. Cleaning ............................................................................................................17

5-3. Calibration .........................................................................................................18

5-4. Replacing the O-rings .......................................................................................18

6. EXPLODED VIEW ......................................................................................................19

7. SPARE PARTS LIST .................................................................................................21

IM 12B6K1-01E-E

1. INTRODUCTION

1-1. General

The flow fittings (Model FF20) and their subassemblies (Model FS20) are used to mount sensor tips in a piping system so that the pH and/or the ORP (Redox) potential of the liquid flowing through it can be measured.

The flow fittings are for connection between two pipes of the piping system providing a “flow through” path. From a practical plant aspect (for easy maintenance and calibration) the mounting place is in a by-pass behind a sample valve. They are supplied with a ring to hold calibration dish for this cleaning and/or calibration.

The subassemblies should be cemented or welded direct in the piping system or in a T-piece of it. The subassemblies of stainless steel meet the requirements of DIN 11850 for mounting in sanitary constructions.

1-2. Features

- Wide choice fo construction materials.

- High degree fo standardisation reduces spare holding requirements.

- Direct mounting of sensors with DIN dimensions.

- Liquid earth sensor for stable measurements.

- High pressure and temperature specifications.

- Chemical or brush cleaning (optional in 4-hole fittings).

2. UNPACKING AND CHECKING

2-1. Unpacking and inspection

When you receive the flow fitting (Model FF20) or the subassembly flow fitting (Model FS20) it is packed in a cardboard box. Open the box and check that the model code is the same as on the packing list (see §2-3 for the model code). Also check that it is supplied with the options you ordered. These options are delivered in seperate bags. If you have any problems or questions, please contact the nearest Yokogawa service center or sales organisation for assistance.

2-2. Mounting location

The flow fitting or subassembly flow fitting is intended to be used for pH and/or ORP (Redox) measurement. The location should be in a bypass of a piping system behind a

GO O D

sample valve. The angle of the fitting with the horizontal should be less than 15° (see fig. 2-1).

The pressure and temperature ratings of the electrode inside the fitting should be noticed to determine the maximum rating of the measurement point.

Figure 2-1

GO O D

HO R IZ ON TAL

15 º

INC OR RE CT

IM 12B6K1-01E-E

2-3. Specificaitons

2-3-1. General specifications

MATERIALS

- Wetted parts a. body : refer to model code b. O-rings : silicon rubber c. liquid earth sensor

(not in 1-hole subassembly) : titanium (plastic designs) SS AISI 316 (SS designs)

- Non-wetted parts a. mounting bracket : SS AISI 316 (SS designs) PVC

(plastic designs) b. electrode mounting sets : Ryton R4 c. holder for calibration dish : SS AISI 316 d. calibration dish : PP e. retaining nut for electrode holder : SS AISI 304

VOLUME MEASURING VESSEL

- 3-hole design : 130 ml

- 4-hole design : 250 ml

PROCESS CONNECTIONS : 1/2” NPT or flange LAP-joint (DIN or ANSI). (fittings only) See model code.

NOMINAL PIPE SIZE FOR MOUNTING SUBASSEMBLIES

- 1-hole : DN20

- 3-hole : DN50

- 4-hole : DN80

WEIGHT* : see table:

Tabel 2-1

Material PP SS PVC PVDF Fitting 1-hole subassembly 0,2 kg 0,1 kg 3-hole subassembly 1,2 kg 0,5 kg 4-hole subassembly 3 kg 1,4 kg 3-hole fitting 1,1 kg 2,2 kg 1,5 kg 4-hole fitting 1,4 kg 6,5 kg 1,8 kg

* The accessories are not included.

IM 12B6K1-01E-E

2-3-2. Funcitonal specifications

TEMPERATURE

- min -10 °C

- max depending on material and application (see fig. 2-2)

FLOW RATE (fittings only) : 0,1 to 10 1/min (depending on applicaiton)

PRESSURE

bar

0 10 20 30 40 50 60 70 80 100 120 140 160

Figure 2-2. Pressure/temperature class

PVC

AISI 316

PVDF

IM 12B6K1-01E-E

2-4. Model and codes 2-4-1. Fittings

Model Suffix Option Description

Code Code

FF20 Flow fitting Material -P Polypropylene (PP)

-S Stainless steel AISI 316 (SS)

-F Polyvinylidenefluoride (PVDF)

Number 22 For PH20

of holes 33 3 electrode mounting holes

43 4 electrode mounting holes

*B Style code B

Options /HCN2 FF20- .22

-Cleaning system /HCN3 FF20- .33

/HCN4 FF20- .43

Options /B For mounting Bellomatic reference electrodes

-Mounting kit

-Flange adapters /FP1 DN15-PN10 PP

(NPT 1/2" male lap joint) /FP2 DN25-PN10 PP

-KCl-reservoir /K Electrolyte tubing (2.5 m) is included.

-Salt bridge /S For liquid which cannot stand contamination

-Certificate /M Material certificate 3.1 according to EN 10204

/R For mounting (top) refillable electrodes

with long glass shaft.

/FP3 1/2" 150 lbs PP

/FP4 1" 150 lbs PP

/FF1 DN15-PN10 PVDF

/FF2 DN25-PN10 PVDF

/FF3 1/2" 150 lbs PVDF

/FF4 1" 150 lbs PVDF

/FS1 DN15-PN10 SS 316

/FS2 DN25-PN10 SS 316

/FS3 1/2" 150 lbs SS 316

/FS4 1" 150 lbs SS 316

with KCl.

for wetted metal parts only

IM 12B6K1-01E-E

2-4-2. Subassemblies (flow fittings)

Model Suffix Option Description

Code Code

FS20 Subassembly (Flow fitting)

Material -V Polyvinylchloride (PVC)

-P Polypropylene (PP)

-S Stainless steel AISI 316 (SS)

-F Polyvinylidenefluoride (PVDF)

Number 12 1 electrode mounting holes (only V,S)

of holes 22 For PH20

32 3 electrode mounting holes

43 4 electrode mounting holes (only V,S)

Mounting -WE Welding end: Type, S12, S22,S32, S43

Glue for PVC: Type V12, V22, V32, V43

Heat welding: Type F22, F32, P22, P32

-TP Tapered pipe thread (2"NPT acc. ANSI B.20.1).

(for 2 and 3 holes version, and not in case of

type V22 and V32)

Options /HCN2 FS20- .22

-Cleaningsystem /HCN3 FS20- .32

/HCN4 FS20- .43

Options /B For mounting Bellomatic reference electrodes

-Mounting kit and combined electrodes. /R For mounting (top) refillable electrodes

with long glass shaft.

-KCl-reservoir /K Electrolyte tubing (2.5 m) is included.

-Salt bridge /S For liquid which cannot stand contamination

with KCl.

-Certificate /M Material certificate 3.1 according to EN 10204

for wetted metal parts only

IM 12B6K1-01E-E

2-5. DIMENSIONS 2-5-1. Flow Fittings

PP/PVDF

FF20-P22 FF20-F22

PP/PVDF

FF20-P33 FF20-F33

Ø71 (2. 80 ")

Ø71 (2.80 ")

1/2" NPT

Ø 9 2

(3.62")

1/2" NPT

OUT

60 (2. 36")

OUT

60 (2. 36")

Ø 8 (0,31 ")

Ø 90

(3.54")

(3.54 ")

5 (2.1 6")

Ø8 (0.31 ")

Ø 9 0

52 [2.05"]

255 [10.04"]

6,5 (1.43" )

76 (10 .82" )

71 [2.80"]

½"NPT Outlet

17.5 [0.69"]

67 [2.64"]

70.3 [2.77"]

½" NPT inlet

76 [2.99]

175 [6.89"]

48 [1.89"]

3x59 [50.35"]

FF20-S22

71 [2.80"]

205 [8.07"]

15 + 3 (8 .46" + 0.12 ")

6,5 (1.4 3 ")

5 (2. 16")

67 [2.64"]

½" NPT inlet

= =

175 [6.89"]

48 [1.89"] 76 [2.99"]

52 [2.05"]

½"NPT Outlet

17.5 [0.69"]

FF20-S33

PP/PVDF

Ø90 (3.54")

320 (12. 6")

FF20-P43 FF20-F43

IM 12B6K1-01E-E

230 (9.0 5")

280 (11.02")

1/2"NPT

130 (5.11")

150 (5.90")

1/2"NPT

4XØ 12 ( 0.47" )

70 (2 .75")

225 ( 8.86 ")

OUT

Ø90 (3.54")

4XØ12 (0.47

OUT

90 (3.54")

20 ( 4.72 ")

90 ( 3.54 ")

15 (4.52")

1/2"NPT

157 (0.18")

80 (3 .15")

265 (10.43")

Distance wall-outlet: 85 (3.35”)

FF20-S43

160 (6.30")

2-5-2. Subassamblies

SS SS PP/PVDF PP/PVC/PVDF

169 (6.65")

60 (2.36")

112 (4.41")

Ø56 (2.20")

124(4.88")

112 (4.41")

2-11,5NPT

ANSI B.20.1

FS20-S22-WE FS20-S22-TP

190(7.48")

82(3.23")

112(4.41")

2-11.5 NPT

ANSI

FS20-P22-TP FS20-F22-TP

200(7.87")

92(3.62")

112 (4.41")

B.21.1

SS SS PP/PVDF PP/PVC/PVDF

124 (4.88")

53 (2.08")

105 (4.13")

Ø 56 (2.20")

105 (4.13")

2-11,5 NPT

ANSI B.20.1

FS20-S32-WE FS20-S32-TP

PVC

146 (5.75")

75 (2.95")

105 (4.13")

FS20-P32-TP FS20-F32-TP

2-11,5 NPT

ANSI B.20.1

138 (5.43")

70 (2.75")

105

Ø 63 (2.48")

FS20-P22-WE FS20-V22-WE FS20-F22-WE

Ø 63 (2.48")

FS20-P32-WE FS20-V32-WE FS20-F32-WE

189(7,44")

81.5(3.21")

136 (5.35")

66 (2.60")

26 (1.02")

105 (4.13")

89 (3.50")

45 (1.77")

106 (4.17")

Ø 88 (3 .46")

Ø 90 (3 .54")

FS20-V43-WE FS20-S43-WE

IM 12B6K1-01E-E

129 (5.08")

58 (2.28")

12B6K1-41

MOUNTING IN A

SHUNT LINE

12B6K1-40

MOUNTING IN A

SAMPLE LINE

3. PIPING AND INSTALLATION

3-1. General

It is important that, whatever method of mounting is used, the point of measurment is truly representative of the entrie solution. Avoid an area where the measurement varies significantly or the flow can be interrupted (the sensors must always be immersed in the process liquid). The recommended type of fitting or subassembly will depend on pressure, temperature, kind of liquid, pollution, etc. Check whether the specifications of the fitting/ subassembly and electrodes fulfil the maximum occuring process conditions. The fitting/ suassembly has several options and optional connection possibilities. Check that you received the correct size and type.

3-2. Piping 3-2-1. Mounting in a sample line

Part of the process liquid is tapped off to

PROCESS PIPING

the flow fitting or subassembly (see fig. 3-1)

DRAIN

Figure 3-1

3-2-2. Mounting in a shunt line

By means of restrictor in the main line a small flow of the process liquid is lead through the flow fitting or subassembly via the shunt line (see fig. 3-2). The pressure in the fitting or subassembly is controlled by means of two valves.

RESTRICTOR

PROCESS PIPING

P2 < P1

Figure 3-2

IM 12B6K1-01E-E

3-2-3. Mounting in a sample line with extra connection for buffer liquid/cleanser

12B6K1-42

MOUNTING IN A

SAMPLE LINE

+CONNECT. FOR

BUFFER...

12B6K1-44

MOUNTING THE FITTING

12B6K1-43

MOUNTING THE FITTING

12B6K1-45

LOCKING SCREWS

The sample line has an extra input for cleaning or calibration (see fig. 3-3).

PROCESS PIPING

buffer liquid

cleaner

Figure 3-3

3-3. Installation 3-3-1. Mounting the fitting

Install the fitting at a convenient location for maintenance and calibration. Ensure that there is some place at the top of the fitting (approx. 20 cm) for mounting or replacing the electrodes.

Mounting the fitting in a piping system is shown in fig. 3-4. Refer to §2-4 for dimensional drawings.

DRAIN

Figure 3-4 Figure 3-5

NOTE: The process connection (liquid outlet) can be turned from right to left.

1. The plastic fittings have locking screws for the holder of the calibration dish (see fig. 3-5). These screws must be loosened before turning.

2. The liquid outlet of the stainless steel fittings can be turned after loosening from the mounting bracket (see exploded view at the end of this manual).

IM 12B6K1-01E-E

3-3-2. Mounting the subassembly

The subassembly can be cemented or welded directly in a piping system or in a T-piece of it. Install the subassembly at a convenient location for maintenance and calibration. Ensure that there is some place at the top of the fitting (approx. 20 cm) for mounting or replacing electrodes. Fig. 3-6 shows some mounting examples. Select the mounting position so that the sensors are immersed in the process liquid during measurement.

(Model WU20) should be used (see fig. 3-7).

GLUE

3-hole (DN50) 4-hole (DN80)

PVC

Figure 3-6

3-4. Sensor mounting 3-4-1. General

For stable measurement the glass- and the reference electrode should be mounted in the holes nearest to the earth connection.

When mounting sensors of Yokogawa in a fitting or subassembly the electrode cables (Model WU20) should be used (see fig. 3-7).

screening

TRIAX-cable (model WU20-LT) for combined electrode

colour

marker

Cable nut

10 cm

COAX-cable (model WU20-PC) for single electrode

colour

marker

colour

outer

marker

inner

marker

screening

core red

white

core red

blue

Figure 3-7

IM 12B6K1-01E-E

Cable nut

10 cm

screen

blue

3-4-2. Mounting in a 1-hole design

12B6K1-21

1-HOLE MOUNTING

12B6K1-22

MOUNTING IN A 3- AND

4-HOLE DESIGN

Unscrew the electrode mounting set and fix the cable and electrode as shown in fig. 3-8.

3-4-3. Mounting in a 3- and 4-hole design

Unscrew the nut from the top end of the fitting or subassembly. Fix the electrodes and cables as shown in fig. 3-9. Note: In the holes for placing the electrodes are

blanking plugs (stoppers). These plugs can be placed in unused holes after pushing the two O-rings over the bottom end.

ATTENTION

To prevent fouling of the contact new Yokogawa electrodes are delivered with a cap. It is recommended to remove the cap just before fixing the cable.

ENSURE THAT THERE IS NO MOISTURE OR DUST IN THE PLUG

Figure 3-8 Figure 3-9

4. ACCESSORIES 4-1. General

For mounting the non-DIN sized sensors in the fittings and subassemblies Yokogawa added a range of accessories to the program of fittings which can be indespensable tools for optional measuring tools (the specifications of the accessories are on seperate sheets, see GS 12B6J1-E-E). See the chapters below for mounting the accessories.

4-2. Mounting kit for BELLOMATIC

electrodes (Model FP20-S13)

Using this mounting kit a BELLOMATIC electrode of Yokogawa can be fixed in a fitting or subassembly (see fig. 4-1).

This mounting kit can also be used for fixing combined electrodes.

Figure 4-1

Electrode

Ring

O-rings

(11 X 3)

IM 12B6K1-01E-E

RECOMMENDED ELECTRODES1)

TYPE DESCRIPTION SR20-AC32 Reference electrode SC29-PTC542) Combined redox/ref. electrode

) For specifications of the electrodes see GS 12B6J1

) Atmospheric conditions only

PARTS AND ACCESSORIES

ORDER NR. DESCRIPTION K1500HC Set rubber ring (10x) K1500GE Set O-rings (5x) for BELLOMATIC electrode K1500GF K1520VA K1500GG K1520VN

250 ml KCI-solution (1 m.) 250 ml KCI-solution (3,3 m.)

250 ml KCI-solution (1 m.) thickend

250 ml KCI-solution, (3,3 m.) thickend

4-3. Mounting kit for sterilisable

applications (Model FP20-S14)

To assure sterilisable applications and a constant flow of electrolyte this mounting kit can be used for fixing combined electrodes with a large KCI-reservoir (see fig. 4-2). For pressurising the system there is a 1/8” nipple for connecting to each standard pump. The pressure inside the holder may never exceed the specifications of the electrodes. See GS 12B6J1 for these specifications.

Tape

ELECTRODES TO BE USED1)

TYPE DESCRIPTION SC21-AAC54 Combined pH/ref. electrode

O-rings

(K1500GS)

SC29-PTC54 Combined redox/ref. electrode

1) For specifications see general specifications sheet GS 12B6J1.

PARTS AND ACCESSORIES

ORDER NR. DESCRIPTION K1500GS Set O-rings K1520VN 250 ml KCI-solution, (3,3 m.) thickend

Figure 4-2

IM 12B6K1-01E-E

Electrode

O-rings (11x3) (K1500BZ)

4-4. Mounting kit for refillable ref.

KCI-reservoire (K1500FU)

Silicone tubing (K1500GA)

O-rings

(11 x 3 (K1500BZ)

)

electrodes

This mounting kit replaces the standard electrode mouting set so that elctrodes of Yokogawa with a long glass shaft can be fixed in the fitting or subassembly (see fig. 4-3). This mounting kit may be used as process pressure up to 3 bar. Higher pressure ratings require the standard mounting set for electrodes with DIN dimensions or, alternately a salt bridge (see §4-5). The refillable electrodes can be connected to a KCI-reservoir via a silicone tubing (see fig. 4-3). The pressure on the KCIsolution and consequently, the liquid outlet can be increased by mounting the reservoir above the fitting or subassembly. This prevents penetration of the process liquid into the electrode.

Note: The pressure on the KCI-solution must

exceed the liquid pressure. Figure 4-3

In §7 you will find the spareparts

4-5. Cleaning systems 4-5-1. General

The standardised design of the fittings and subassemblies makes it possible to mount cleaning systems directly. The 4-hole types are especially designed for these applications.

Three different types of cleaning systems are available (see fig. 4-4):

- mechanical cleaning (electrically or mechanically driven)

- chemical cleaning Detailed specifications of the cleaning systems are on seperate sheets (see GS 12B6V1-E-E).

Figure 4-4

brush cleaning

chemical cleaning

IM 12B6K1-01E-E

12B6K1-39

SELECTION CRITERIA

K1547PP

O-rings

(11x3)

K1500BZ

4-5-2. Selection criteria

cleaning system mechanical chemical acoustical

brush acid base emulsifier ultra sonic

Applications: oils fats x x resins (wood, pulp) x x emulsions of latex x fibers (paper, textile) x crystalline precipations (carbonates) x xx x amorpheus precipations x xx x

4-5-3. Mechanical cleaning

The brush of this cleaning system periodically strikes along the sensitive glass membrane of the electrode, so that this part is wiped frequently preventing sediment formation on it. Electrically or pneumatically versions are available.

Electrically driven brush cleaning (Model FC20-VE). Figure 4-5 shows the mounting.

PARTS AND ACCESSORIES

ORDER NR. DESCRIPTION WU20-PC Cable (to be used as a

K1520NG Brush holder K1520NB Brush

supply cable for the motor)

K1520NF Motor unit

Figure 4-5 IM 12B6K1-01E-E

Motor

O-rings (11x 3 (K1500BZ)

Brush holder

)

Cable

WU20

Pneumatically driven brush cleaning

12B6K1-27

PNEUMATICAL CLEANING

(Model FC20-VP)

CONTROL

UNIT

PARTS AND ACCESSORIES

ORDER NR. DESCRIPTION K1520NA Tubing (ø4 mm)

TUBING

K1520NA

K1520NG Brush holder K1520NB Brush K1520NG Protection hose K1520NH Piston K1520NJ Control unit

PISTON

O-RING (11x 3)

BRUSH HOLDER

Figure 4-6 Example FC20-VP

4-5-4. Chemical cleaning HCN.

The chemical cleaning system is effective in processes where deposits can be removed by a suitable solvent. Good cleaning effects can be obtained from periodically spraying of an electrode. EXA has a built-in wash timer with programmable washtime, interval time and relaxation time for automatic cleaning of the electrodes, preventing pollution of the pH sensitive parts. After washing, it is possible to check the response time of the electrodes. A built-in (no return) nozzle in the spray unit prevents penetration of the process liquid in the cleaning system. The standardised dimensions allow mounting in

O-rings

(11x3)

K1500BZ

all flow-, insertion- and immersion fittings of Yokogawa as well as back-end mounting on the 4-in-one pH/Redox electrodes, like FU20.

PROTECTION

HOSE

K1520NC

Features

• The EXA analyzer has a built-in timer and HOLD circuit.

• Built-in (no return) nozzle to prevent penetration of the process liquid into the cleaning system.

Figure 4-7 Example HCN4

K1547PP (spare tubing, EPDM)

IM 12B6K1-01E-E

Specifications

Materials

Nozzle : Hastelloy O-rings : EPDM rubber Mounting set : Stainless steel Tubing : 1/4” (OD Ø) Nylon tubing Process cond. : Max. 1 MPa (10 bar) at 100 ºC

Mounting

K1547PA : /HCN2, 2-hole flow-, insertion fitting (PH20) K1547PA : /HCN3, 3-hole flow-, insertion-, immersion fitting K1547PB : /HCN4, 4-hole flow-, insertion-, immersion fitting K1547PJ : /HCNF, back-end mounting on FU20/PH20

4-5. Salt bridge

(Model SB20-VP, VC and VS)

This reference electrode/salt bridge combination allows pH and ORP(Redox) measurement with the normal electrodes in those cases when: a. excessive contamination of the ceramic

flow diaphragm is expected

- the flow of the reference liquid through the diaphragm is increased by pressurising the container. Consequently, the contamination rate will decrease.

b. the process to be measured cannot stand

the contamination with KCl

- the salt bridge can be filled with several electrolytes.

c. measurements have to be performed at

pressures up to 10 bar and temperatures up to 100 °C

- the container with reference liquid can be pressurised.

FLOW TUBE (A)

Material : glass Flow diaphragm : ceramic, PTFE or sleeve Connector : Ryton R4

TUBING (B)

Material : nylon Diameter : 1/4” o.d. Length : 2 mtr.

CONTAINER (C)

Container : PVC, PVC (transparent) Electrode mounting set : Ryton R4 “O” ring : silicone

Figure 4-8

Ø 17

Ø 12

Figure 4-9

Reference Electrode

Ø 1/4”

120

Ø 75

166

Ø 75

IM 12B6K1-01E-E

Connection : nylon Weight : approx. 300 g. Mounting : wall mounting (support with hole for screw M5) Temperature/ pressure ratio : max. 200 kPa (2 bar) at 100°C

Notes:

1. The dimensions of the flow tube equal to those of standard electrodes

2. The standard reference electrodes can be mounted in the container

3. To observe the electrolyte level, the container is made of PVC.

For mounting instructions see fig. 4-9

PARTS AND ACCESSORIES ORDER NR. DESCRIPTION

K1500BW Flow tube with ceramic diaphragm K1500EE Flow tube with PTFE diaphragm K1500EF Flow tube with sleeve diaphragm K1520VA Electrolyte 3.3M KCl (250 ml) K1520VN Thickened electrolyte 3.3M KCl (250 ml) K1500GF Electrolyte 1M KCl (250 ml) K1500GG Thickened electrolyte 1M KCl (250 ml)

5. MAINTENANCE

5-1 General

Before the electrodes can be serviced, the electrode holder should be physically separated from the process. The fittings can be changed from the measuring position in the maintenance position by following the reversed procedures described in §4.

5-2. Cleaning Cleaning the fitting

When process liquid contains slurry which intends to settle in the fitting regularly, the electrode holder must be removed for cleaning.

Cleaning the electrodes

When the sensitivity of the electrode has decreased or the response has slowed down, the electrode should be cleaned. The 3- and 4-hole fittings are provided with a calibration ring with a set of beakers. The electrode holder complete with electrodes and liquid earth sensor can be placed on the ring for cleaning.

If cleaning with hot water is not sufficient, more aggressive water based agents should be used.

- Deposits of limes, hydroxides or carbonates can be removed by immersing the electrode in a solution containing diluted hydrochloric acid. Afterwards rinse the electrode with water.

- Deposits of oil and fat can be removed with hot water in conjunction with a detergent. When the results are unsatisfactory a mild (carbonate based) abrasive can be used.

- Protein (albuminous) deposits should be removed with a protein enzymatic solution. For instance a solution containing 8.5 ml concentrated hydrochloric acid and 10 gr pepsin in 1 litre water.

IM 12B6K1-01E-E

ATTENTION

Avoid using non-polar solvents like tri-chloro ethylene, toluene or hexane. Even cleaning with ethanol or acetone is not recommended. These solvents will break up the gel-layer on the glass bulb and afterwards needs to remain soaked in water for at least 12 hours before functioning normal. The PTFE diaphragm of the combined electrode can sometimes be regenerated by putting it in hot (60 to 80 °C) 1 molar Potassium chloride (KCl) solution and letting it cool to room temperature. After cleaning the probe is re-inserted into the process by following the reverse procedure (see §3-5).

5-3. Calibration

It is recommended to start calibration with clean electrodes. Always calibrate new electrodes. With the electrodes connected to the transmitter a calibration can take place. Check the appropriate chapters in the instruction manual of the pH transmitter for details.

General procedure for calibration

To calibrate a pH transmitter two buffer solutions with known pH value are required. It is recommended that one buffer solution has a value near pH 7. Depending on the liquid to be measured the second buffer solution should either be in the acidic or base area. Normally the buffers pH 4.01 or 9.22 are used.

Generally the procedure for calibration is as follows:

- Clean the electrodes

- Rinse the electrodes

- Immerse the electrodes in the first buffer solution (pH 7)

- Adjust the asymmetry setting of the transmitter for reading a known value

- Rinse the electrodes

- Immerse the electrodes in the second buffer (pH 4 or pH 9)

- Adjust the slope setting of the transmitter for reading a known value

- Rinse the electrodes.

During calibration the temperature compensation should be active. It is advised top calibrate with buffer solutions at a temperature near the process temperature.

5-4. Replacing the O-rings

The exploded view (see §6) shows the position of the sealing O-rings. The O-rings used in the wetted part are made of silicone rubber, which has superior resistance to corrosion suitable for use with most process liquids.

Usually no periodical inspection is necessary. To prevent trouble, replace the O-ring seal periodically, e.g. every year.

IM 12B6K1-01E-E

6. EXPLODED VIEW

12B6K1-31

ASSEMBLED FLOW

FF20-.33

12B6K1-32

ASSEMBLED FLOW

FF20-.43

12B6K1-33_New

ASSEMBLED FLOW

FF20-S33

12B6K1-34

ASSEMBLED FLOW

FF20-S43

FF20-.33

FF20-P22 FF20-F22

FF20-S33

FF20-.43

FF20-S22

FF20-S43

IM 12B6K1-01E-E

12B6K1-21

1-HOLE MOUNTING

12B6K1-35

SUBASSY FLOW

FS20-.33

12B6K1-36

SUBASSY FLOW

FS20-.43

12B6K1-37

SUBASSY

FS20-S33

12B6K1-38

SUBASSY FLOW

FS20-S43

FS20-.12

FS20-S22 FS20-P22 FS20-F22 FS20-V22

FS20-S32 FS20-S43

FS20-.43FS20-.32

IM 12B6K1-01E-E

SPARE PARTS

Accesoires

Part no. Description

K1500FU KCl reservoir PVC for F*20 SB20 Salt bridge K1500BX Grommet for watertight cable input in PG 16 gland

(3 electrodes cables and liquid earth cable) K1500BY Mounting kit for (top) refillable electrodes K1547PA Complete hastelloy cleaning system /HCN2 and /HCN3 K1547PB Complete hastelloy cleaning system /HCN4 K1521AD Flange adapter /FS3 K1521AE Flange adapter /FF3 K1521AF Flange adapter /FP3 K1521AG Flange adapter /FS4 K1521AH Flange adapter /FF4 K1521AJ Flange adapter /FP4 K1521AK Flange adapter /FS1 K1521AL Flange adapter /FF1 K1521AM Flange adapter /FP1 K1521AN Flange adapter /FS2 K1521AP Flange adapter /FF2 K1521AQ Flange adapter /FP2

Consumable Parts

Part no. Description

K1520BA Buffer Solution Starters Kit: (3x 500 ml) Solutions pH 4.01 / 6.87 / 9.18 K1520BB Buffer Solution (3x 500 ml) pH 1.68 K1520BC Buffer Solution (3x 500 ml) pH 4.01 K1520BD Buffer Solution (3x 500 ml) pH 6.87 K1520BE Buffer Solution (3x 500 ml) pH 9.18 K1500GF 250 ml. KCl-solution (1 M) K1520VA 250 ml. KCl-solution (3.3 M) K1500GG 250 ml. KCl-solution (1 M), thickened K1520VN 250 ml. KCl-solution (3.3 M), thickened

Cables

Part no. Description

K1500FV Liquid earth cable (10 m) K1500DU Liquid earth cable (25 m) WU20-PC02 COAX-cable (2 m) for single electrode WU20-PC05 COAX-cable (5.5 m) for single electrode WU20-PC10 COAX-cable (10 m) for single electrode WU20-PC15 COAX-cable (15 m) for single electrode WU20-PC20 COAX-cable (20 m) for single electrode WU20-PC25 COAX-cable (25 m) for single electrode WU20-LT02 TRIAX-cable (2 m) for combined electrode WU20-LT05 TRIAX-cable (5.5 m) for combined electrode WU20-LT10 TRIAX-cable (10 m) for combined electrode WU20-LT15 TRIAX-cable (15 m) for combined electrode WU20-LT20 TRIAX-cable (20 m) for combined electrode WU20-LT25 TRIAX-cable (25 m) for combined electrode

IM 12B6K1-01E-E

Spare parts FF20

Part no. Description

K1500BV O-rings EPDM 11x3 (6 Pcs.) K1500BW Flow tube for SB20-VC K1500BY Option /R for F*20.. (82850747) K1500BZ O-rings Viton 11x3 (6Pcs)51250 K1500DU Liquid earth cable 25m K1500DW Set of 12 cable nuts for WU20 K1500DX 5 m tubing for SB20 K1500DZ Nut SS, FF/S20-3* + ISC40FF/S K1500EK O-rings viton 6.07x1.78 (5x2) K1500EQ O-ring set EPDM FF20-S22 K1500ER O-ring set Viton FF20-S22 K1500ES O-ring set EPDM FF20P&F33 K1500ET O-ring set Viton FF20P&F33 K1500EU O-ring set EPDM FF20-S33 K1500EV O-ring set Viton FF20-S33 K1500EW O-ring set EPDM FF20P&F43 K1500EX O-ring set Viton FF20P&F43 K1500EY O-ring set EPDM FF20-S43 K1500EZ O-ring set Viton FF20-S43 K1500FK O-ring set Viton FF20P&F22 K1500FL O-ring set standard FF20P&F22 K1500FM O-ring set FF20-S22 K1500FU KCl reservoir PVC for F*20 K1500FV Liquid earth cable 10m K1500GA 5 m tube for KCl reservoir K1500GN O-ring set FF/FS20 3-hole SS K1500GP O-ring set FF/FS20 3-hole P/F K1500GR O-rings silicon 11x3 8pcs K1500GT O-ring set silicon. FF20-.4. K1500GZ Earthpin assy for F*20 non-S K1500HA Calibr. dish for FF20-*33 (50) K1500HB Calibr. dish for FF20-*43 (50) K1500HD O-rings silicon 11x3 50pcs K1511DP O-rings viton 21.9x2.62 (5x2) K1520CE Spare 3-hole holder PP K1520CF Spare 3-hole holder PVDF K1521AD Flange adapter /FS3 K1521AE Flange adapter /FF3 K1521AF Flange adapter /FP3 K1521AG Flange adapter /FS4 K1521AH Flange adapter /FF4 K1521AJ Flange adapter /FP4 K1521AK Flange adapter /FS1 K1521AL Flange adapter /FF1

IM 12B6K1-01E-E

K1521AM Flange adapter /FP1 K1521AN Flange adapter /FS2 K1521AP Flange adapter /FF2 K1521AQ Flange adapter /FP2 K1547PA Hast. cleaning unit HCN2/3 K1547PB Hast. cleaning unit HCN4 K1547PF Nozzle and mounting HCN2/3/F K1547PG Nozzle and mounting HCN4 K1547PH 10 m Nylon Tube and mounting K1547PP Spare Part EPDM spraying valves

IM 12B6K1-01E-E

YOKOGAWA ELECTRIC CORPORATION World Headquarters

9-32, Nakacho 2-chome, Musashino-shi Tokyo 180-8750 Japan www.yokogawa.com

YOKOGAWA CORPORATION OF AMERICA

2 Dart Road Newnan GA 30265 USA www.yokogawa.com/us

YOKOGAWA EUROPE BV

Euroweg 2 3825 HD AMERSFOORT The Netherlands www.yokogawa.com/eu

YOKOGAWA ELECTRIC ASIA Pte. LTD.

5 Bedok South Road Singapore 469270 Singapore www.yokogawa.com/sg

YOKOGAWA CHINA CO. LTD.

3F Tower D Cartelo Crocodile Building No.568 West Tianshan Road Changing District Shanghai, China www.yokogawa.com/cn

YOKOGAWA MIDDLE EAST B.S.C.(c)

P.O. Box 10070, Manama Building 577, Road 2516, Busaiteen 225 Muharraq, Bahrain www.yokogawa.com/bh

Yokogawa has an extensive sales and distribution network. Please refer to the European website (www.yokogawa.com/eu) to contact your nearest representative.

IM 12B6K1-01E-E

Yokogawa FS20 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual