YOKOGAWA FU24 User manual

IM 12B06J03-03E-E
10th edition
Instruction
Manual
Model FU24
pH/ORP Combination sensor
with pressure compensation
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CONTENTS
1. PREFACE 6
1.1 Introduction 6
1.2 Unpacking and Checking 6
1.3 Warranty and Service 7
1.4 Serial number 7
2. GENERAL SPECIFICATIONS 8
2.1 Measuring elements 8
2.2 Wetted parts 8
2.3 Functional specifications (at 25°C) 8
2.4 Dynamic specifications 8
2.5 Operating range 8
2.6 Regulatory standards (only for sensor without suffix -VS) 9
2.7 Shipping details 9
2.8 Environmental conditions 9
2.9 Mechanical specifications 9
3. INSTALLATION OF FU24 10
3.1 Typical installation 10
3.2 Preparing the sensor for use 10
3.3 Mounting the sensor 10
4. DIMENSIONS 12
5. WIRING 13
5.1 Connections 13
5.2 Definition EXA/FLXA terminal numbers to FU24 sensor 13
5.3 Settings for PH402G and PH202G(S) 14
5.4 Settings for PH150, PH450G and FLXA 14
6. GENERAL CALIBRATION & MAINTENANCE PROCEDURE 14
6.1 Calibration for pH measurement 14
6.2 Calibration for ORP and rH measurement 15
6.3 Maintenance of the FU24 sensor 15
7. MODEL CODES 16
8. SPARE PARTS 16
9. CHEMICAL COMPATIBILITY CHART 17
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1. PREFACE
1.1 Introduction
This instruction manual provides
information for the installation and use of
the FU24 four-in-one wide body pH sensor,
which is especially designed for harsh
process applications.
The Model FU24 offers a simple and
cost effective solution for process
applications with fluctuating pressure and/
or temperature which normally limit the
lifetime of a sensor.
By using the patented Bellow system a
strong pressure compensation mechanism
is created. This ensures immediate interior
pressure equalization to the outside
process pressure, making the sensor
virtually insensitive to process pressure
variations.
A slight overpressure caused by the bellow
tension prevents process fluid ingress and
maintains a positive ion flow out of the
sensor. This feature is of particular interest
in pure water applications.
This all-in-one sensor provides
simultaneous measurement of pH, redox
(ORP) and temperature if desired. The
rugged PPS 40GF body is designed for
easy installation via the 1” NPT threaded
connections provided on both ends of the
sensor.
The FU24 sensor is available in two types:
• With fixed cable, 5 and 10 metres.
• With VarioPin connector:
(VP and VS-model)
The VP model can be used with an
analogue analyzer in combination with
universal WU10-V-S cable or halagon free
WE10-H-D cable. Both cables are available
in different lengths.
The VS model can be used with SA11-P1
Smart Adapter which is placed directly
on top of this connector, or remotely
connected using the 3 meter WE10-H-D-
003-V1 cable.
1.2Unpacking and Checking
Upon delivery, unpack the sensor carefully
and inspect it to ensure it was not
damaged during shipment. If damage is
found, retain the original packing materials
and then immediately notify the carrier and
the relevant Yokogawa sales office. Make
sure the Model Code and Serial Number
on the sensor are the same as on the
packing list. Also, check any option(s) that
were ordered are included and correct.
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1.4 Serial number
The Serial number is defined by nine (9)
alphanumeric characters:
X1X2Production location
X3X4Year/Month code
X5X6X7X8X9Tracking number
Example: N3P600028
Table 1:
Year Yearcode Year Yearcode
2014 P 2026 3
2015 R 2027 4
2016 S 2028 5
2017 T 2029 6
2018 U 2030 7
2019 V 2031 8
2020 W 2032 9
2021 X 2033 A
2022 Y 2034 B
2023 Z 2035 C
2024 1 2036 D
2025 2 2037 E
Table 2:
Month Monthcode
January 1
February 2
March 3
April 4
May 5
June 6
July 7
August 8
September 9
October A
November B
December C
1.3 Warranty and Service
Yokogawa products and parts are
guaranteed free from defects in
workmanship and material under normal
use and service for a period of (typically) 12
months from the date of shipment from the
manufacturer. Individual sales organizations
can deviate from the typical warranty
period, and the conditions of sale relating
to the original purchase order should be
consulted. Damage caused by wear and
tear, inadequate maintenance, corrosion,
or by the effects of chemical processes are
excluded from this warranty coverage. In
the event of warranty claim, the defective
goods should be sent (freight paid) to the
Service Department of the relevant sales
Organization for repair or replacement (at
Yokogawa’s discretion).
The following information must be included
in the letter accompanying the returned
goods:
•Model Code and Serial Number.
•Original Purchase Order and Date.
•Length of time in service and description
of the process.
•Description of the fault and circumstances
of the failure.
• Process/environmental conditions that may
be related to the failure of the sensor
•Statement as to whether warranty or non-
warranty service is requested.
•Complete shipping and billing instructions
for return of material, plus the name and
phone number of a contact person that
can be reached for further information.
•Clean Statement
Returned goods that have been in
contact with process fluids must be
decontaminated and disinfected prior
to shipment. Goods should carry a
certificate to this effect, for the health and
safety of our employees. Material Safety
Data sheets must be included for all
components of the process to which the
sensor(options) have been exposed.
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p(bar)
Temp. (ºC)-10 25 50 1050
5
0
10 NPT
FSM
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2. GENERAL SPECIFICATIONS
2.1 Measuring elements
: pH glass electrode
: Silver chloride reference
: Solid platinum electrode
: Pt1000 temperature sensor.
2.2 Wetted parts
Sensor body : PPS 40GF
Earthing pin : Solid Platinum
Measuring sensor : G-glass
LE glass tube : AR-glass
O-ring : Viton
Reference junction : Porous PTFE
Bellow system : Viton
2.3 Functional specifications (at 25°C)
Isothermal point : pH 7
Reference system : Ag/AgCl with saturated KCI
Glass impedance
- Dome shape : 100 MΩ nominal
- Flat Surface : 500 MΩ nominal
Junction resistance : 1.0 to 15 kΩ
Liquid outlet : non-flow double junction
Temperature element : Pt1000 to IEC 751
Asymmetry potential : 8 ± 15 mV
Slope : > 96 % (of theoretical value)
Note: The temperature sensor included in the FU24 is designed for cell compensation
and for indication. It is NOT designed for process temperature control.
2.4 Dynamic specifications
Response time pH : t90 < 15 sec. (for 7 to 4 pH step)
Response time temperature
- Dome shape : t90 < 1 min. (for 10 °C step)
- Flat surface : t90 < 4 min. (for 10 °C step)
Stabilization time pH : < 2 min. (for 0.02 pH unit during 10 sec.)
2.5 Operating range
pH : 0 to 14
ORP : -1500 to 1500 mV
rH : 0 to 100
Temperature
- Dome shape : -10 to 105 ºC (14 to 221 ºF)
- Flat Surface : +15 to 105 ºC (59 to 221 ºF)
Pressure :
Conductivity : > 10 µS/cm
Note: The pH operating range at room temperature is 0-14 pH, but at high temperatures or
range outside 2-12 pH the lifetime will be seriously shortened.
Note: Sensor is suitable for pure water applications
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2.6 Regulatory standards (Only for sensors without suffix -VS)
CE : Decision 768/2008/EC
- ATEX : Directive 2014/34/EU,
as amended by Regulation (EC) no. 1882/2003
-Certificate no. : DEKRA 11ATEX0014 X
II 1 G Ex ia IIC T3...T6 Ga
-Electrical data : For sensor input circuit connected to a certified intrinsically
safe circuit with the following maximum values:
Ui = 18 V; Ii = 170 mA; Pi = 0.4 W; Li = 0 mH;
Ci = 0 nF (VP type) or 3.6 nF (permanently connected cable)
or certified intrinsically safe Yokogawa pH/ORP transmitter
Model FLXA21/ 202 series or Model PH202S series.
-Special conditions(X) : T6 for Tamb. -40 °C to +40 °C
T4 and T5 for Tamb. -40 °C to +55 °C
T3 for Tam. -40 °C to +105 °C
: Electrostatic charges on the sensor enclosure shall be avoided.
- ROHS II :Directive 2011/65/EU
Applying articlecategory9; Industrial monitoring and control
instrumention selective electrodes.
- Pressure : Directive 2014/68/EU,
as amended by Regulation (EC) no. 1882/2003
-Applying article : 4.3 (Sound Engineering Practice)
: Damaging the screw thread of the sensor might influence
the maximum process pressure.
: Sensor contains glass parts which if broken can cause
cutting injuries.
IECEx
Applying standards : IEC 60079-0: 2012
IEC 60079-11: 2012
IEC 60079-26: 2007
Certificate no. : IECEx DEK 11.0064X
Ex ia IIC T3...T6 Ga
Note: When the sensor has been connected to none intrinsically safe equipment
which exceeds the restrictions regarding the sensor input circuit (see electrical data),
the sensor is not suitable anymore for intrinsically safe use.
2.7 Shipping details FU24-05/10 FU24-VP/VS
Package size (LxWxH) 410x130x75 300x100x75 mm
16.1x5.1x3.0 11.8x3.9x3.0 inch
Package weight (max.) 0.92 kg (2.02 lbs) 0.33 kg (0.73 lbs)
2.8 Environmental conditions
Storage temperature : -10 to 50 ºC (14 to 122 ºF)
Water proof : IP67 (conform IEC 60529)
2.9 Mechanical specifications
Max. torque on sensor body: 7,5 Nm
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3. INSTALLATION OF FU24
For optimum measurement results, the FU24
should be installed in a location that offers
an acceptable representation of the process
composition and DOES NOT exceed the
specifications of the sensor. The FU24 is
designed with 1” NPT threaded connections
on both ends of the sensor to allow
installation in a wide variety of applications.
3.1 Typical installation
The FU24 sensor is designed for versatile
in-line, immersion or bypass loop
installation. For best results the FU24
should be mounted with the process flow
coming towards the sensor. The sensor can
be mounted in all angles with respect to the
horizontal plane.
3.2 Preparing the sensor for use
Remove the sensor from its shipping box
and slide off the so-called ‘wet pocket’, the
tube filled with solution to prevent drying out
of the measuring elements during shipment
or storage. It is recommended to calibrate
the sensor before first use.
A general calibration procedure is described
in Section 6 of this Instruction Manual.
3.3 Mounting the sensor
The simplest mounting is to use one of
the 1” NPT threaded connection of the
sensor. Apply Teflon tape to the appropriate
threaded end, then install the sensor in the
process. Tighten the sensor using a wrench
on the sensor flats.
The FU24 can also be mounted in a
FF20-*22 and FF20-*33 flow fitting or
put in the process by making use of the
FS20-*22 and FS20-*32 subassembly. In
both cases this can be realized by using
one of the spare part adapters
(see Section 8 for ordering information).
1 Apply Teflon tape to the threaded end of
the sensor;
2 Install the sensor in the adapter. Tighten
the sensor using a wrench on the sensor
flats (see Figure 1 and 2).
Note: DO NOT over tighten the sensor
to prevent damage. The maximum
applicable torque is 7,5 Nm. Figure 1. FS20 installation example FU24
K1521JA
FS20-S32-WE
O-ring
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