Yokogawa FD20 User Manual
Instruction
Manual
Model FD20
Immersion Fittings
pH/ORP
YOKOGAWA
IM 12B6K2-01E-E
7th edition
TABLE OF CONTENTS
1. INTRODUCTION ......................................................................................................... 2
2. SPECIFICATIONS .......................................................................................................3
2-1. General specifications ............................................................................................ 3
2-2. Functional specifications ........................................................................................ 3
2-3. Model and codes ...................................................................................................4
2-4. External dimensions ..............................................................................................5
3. INSTALLATION ..........................................................................................................6
3-1. Selecting the installation site .................................................................................. 6
3-2. Installation .............................................................................................................. 6
3-3. Cables and sensor mounting ................................................................................. 7
4. MOUNTING OF ACCESSORIES .............................................................................. 11
4-1. Mounting kit (FP20-S13) ...................................................................................... 11
4-2. Mounting kit (order nr. 82850747) ........................................................................ 12
4-3. Cleaning systems ................................................................................................. 12
4-4. Salt bridge ...........................................................................................................15
4-5. Protection hoses .................................................................................................. 15
5. MAINTENANCE AND INSPECTION ........................................................................ 16
6. SPARE PARTS ..........................................................................................................16
1. INTRODUCTION
The model FD20 immersion fittings are used to submerge sensor tips so that the pH and/or
ORP (redox) potential of liquids in open vessels, tanks, drains etc. can be measured.
The fittings are available for mounting of either:
- one electrode
- three electrodes
- four electrodes or alternatively three electrodes and a cleaning system.
Features
• Designed for either pH or ORP measurements in tanks open vessels and drains.
• “Hoisting cable” for easy maintenance.
• Pre-selected immersion length.
• Wide choice of construction materials.
• Flange mounting.
• High degree of standardisation reduces spare holding requirements.
• Liquid earth pin for stable measurements.
• Chemical or brush cleaning systems as an option.
2. SPECIFICATIONS
2-1. General specifications
Materials
- wetted parts
A. body (refer to model code) : polyproplylene (PP)
stainless steel AISI 316 (SS)
polyvinylchloride (PVC)
polyvinylidenefluoride (PVDF)
B. O-rings : silicone rubber
C. liquid earth sensor : titanium (PP and PVDF design)
(not in 1-hole fitting) stainless steel AISI 316 (SS design)
- electrode mounting sets : Ryton R 4
- “hoisting eye” : stainless steel cable (twisted)
Weight* : see tabel 1
Table 1
Material PVC PP SS PVDF
Fitting
1-hole fitting 0,4 kg
3-hole fitting 2 kg 5,3 kg 2,5 kg
4-hole fitting 4,5 kg 6,4 kg 5,5 kg
* The accessories are not included. The noted weights are at an immersion length of 1 m.
3
Mounting : by means of the “hoisting eye” or flange
mounting
2-2. Functional specifications
Temperature
- min. : -10°C
- max. : depending on material and application (see
figure 2-1)
Immersion length (in dm) : between 0,5 and 2,0 m
Pressure : see figure 2-1
Pressure/temperature class (figure 1)
10
BAR
8
6
PP
4
PVDF
2
0 20 40 60 80 100 120 140 160
PVC
SS
ºC
Fig. 2-1. Pressure/temperature class
IM12B6K2-01E-E
4
2-3. Model and codes
Model Suffix Option Description
Code Code Code
FD20F37 Immersion fitting, PVDF, 3 electrode mounting holes
FD20F47 Immersion fitting, PVDF, 4 electrode mounting holes
FD20P37 Immersion fitting, PP, 3 electrode mounting holes
FD20P47 Immersion fitting, PP, 4 electrode mounting holes
FD20S37 Immersion fitting, SS, 3 electrode mounting holes
FD20S47 Immersion fitting, SS, 4 electrode mounting holes
FD20V18(1 Immersion fitting, PVC, 1 electrode mounting holes
Immersion - Between 5 and 20 (in dm)
length(2 example 06=0.6 m.
Flange(3 -NF No flange
(Working -F1 Flange DN32 for 1 hole fitting
pressure -F2 Flange DN80 for 3 hole fitting PP
not more than -F3 Flange DN80 for 3 hole fitting PVDF
3 bar) -F4 Flange DN80 for 3 hole fitting SS
-F5 Flange DN125 for 4 hole fitting PP
-F6 Flange DN125 for 4 hole fitting PVDF
-F7 Flange DN100 for 4 hole fitting SS
-S1 Flange ANSI 11/4” 150Lbs for 1 hole fitting PVC
-S2 Flange ANSI 3” 150Lbs for 3 hole fitting PP
-S3 Flange ANSI 3” 150Lbs for 3 hole fitting PVDF
-S4 Flange ANSI 4” 150Lbs for 3 hole fitting SS
-S7 Flange ANSI 4” 150Lbs for 4 hole fitting SS
*A Style A
Options
Protectionhose /PH5 For 5,5 m cable
installation kit /PH10 For 10 m cable
Mounting kit /R For mounting (top) refillable electrodes with al long
glass shaft
/B For mounting Bellomatic reference and combined
electrodes
KCL reservoir(4 /K Electrode tubing is included (2,5 m)
(only in combintaion with /R)
Salt bridge /S For liquid which cannot stand contamination with KCL
Certificate /M 3.1 according EN-10-024 (DIN 50049 3.1)
for wetted metal parts
1. PVC is available in a 1-hole design only.
2. The immersion length of stainless steel fittings with a flange will be shortened by 35 mm
(refer to dimensional drawings).
3. Configuration of hole (see dimensional drawings 2-4). Working pressure not more than 3
bar. For higher pressure ratings please contact your local Sales Department of Yokogawa.
4. In combination with /R option only.
Notes:
a. Options are supplied with the fitting.
b. The available length of the electrode cables between fitting and converter or connection
box is cable length minus immersion length (L).
IM 12B6K2-01E-E
2-4. External dimensions
ø 30
ø 25
ø 40
L
ISO 228/2-G1/2
5
1-hole PVC
3-hole PP and PVDF
Flange Flange
ø D
ø dg
ø90
ISO 228/2-G 1/2
(2x)
ø75
ø k
dg
27
ø k
b
ø D
b
ø 125
IM12B6K2-01E-E
6
ø130
ø110
27
M8
ISO 228/2-G1/2 (3x)
3-hole SS
ISO 228/2-G 1/2
2x
ø76
ø80
27
80
4-hole PP and PVDF
Flange Flange
ø k
ø k
35
IM 12B6K2-01E-E
dg
ø D
dg
ø D
b
ø 188
b
L
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