Mettler Toledo InFit 76 e, InFit 764 e, InFit 761 e Instruction Manual
InFit 761 e/InFit 764 e
Instruction Manual
1258
InFit 761 / InFit 764
52 403 547
2 InFit 76X e Series
© It is forbidden to reprint this Instruction Manual in
whole or part. No part of this manual may be repro duced
in any form, or modified, copied or distributed using
electronic systems, in particular in the form of photo copies, photog raphs, magnetic or other recordings,
without written consent of Mettler-Toledo GmbH, Process
Analytics, CH-8902 Urdorf, Switzerland.
All rights reserved, in particular reproduction, trans lation and patenting/registration.
© 02 /17 Mettler-Toledo GmbH CH- 8606 Greifensee
Printed in Switzerland 52 403 547
InFit 76X e Series 3
InFit 761 e/InFit 764 e
Instruction Manual
© 02 /17 Mettler-Toledo GmbH CH- 8606 Greifensee
Printed in Switzerland 52 403 383
4 InFit 76X e Series
How to use this Instruction Manual
This Instruction Manual is an integral part of
the METTLER TOLEDO insertion housing
InFit®76X e Series and contains notes and
instructions that are important for safety and
operation.
All persons working on or with the InFit 76X e
must have first read and understood the
sections appropriate to the work in hand.
Please read this Instruction Manual carefully
before using the housing. Keep this document
close to the unit, so that operating personnel
may easily be able to refer to it at any time.
Caution! Please first read Section 1
”Intro duction” and Section 2 ”Safety
instruc tions”.
Proprietary designations
The following are proprietary names and, for
the sake of simplicity, will be mentioned in this
Instruction Manual without the registration
marking, e.g.
– InFit is a registered trade mark of Mettler-
Toledo GmbH, CH-8606 Greifensee,
Switzerland.
– PTFE, Viton and Kalrez are regis tered trade-
marks of DuPont.
Use of warnings and symbols
Danger! Warning of a dangerous situation that
can lead to death or severe injury, or cause
extensive material damage.
Caution! Warning of a possibly dangerous
situation that can lead to light bodily harm
and/or material damage.
Attention: Information referring to technical
requirements. Non-adherence can lead to
malfunction, uneconomic working and
possibly also to loss of productivity.
© 02 /17 Mettler-Toledo GmbH CH- 8606 Greifensee
Printed in Switzerland 52 403 547
InFit 76X e Series 5
Explanation of housing designations
The generic term InFit 76Xe Series used in this
Instruction Manual refers to:
– InFit 761e – Insertion housing for pH/
Redox electrodes with gel-type or polymer
electrolyte, O
ductivity sensors (with 12 mm diameter
, CO2, turbidity and con -
2
and Pg 13.5 thread).
– InFit 764 e – Insertion housing for pressur-
ized pH/Redox electrodes with liquid
electrolyte (such as InPro 2000).
© 02 /17 Mettler-Toledo GmbH CH- 8606 Greifensee
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6 InFit 76X e Series
Contents
Introduction ....................................................8
1
.1 Ex declaration ..................................................9
1
.1.1 Use in Ex classified areas (hazardous areas) ......9
1
1.1.2 Ex classification
II 1/2G c IIC TX Ga/Gb,
I 1/2D c IIIC TX Da/Db, designation and num-
I
ber of certificate SEV 13 ATEX 161 X ..................9
1.2 FM certification ..............................................11
1.2.1 Ex classification ”FM Approved” (drawing) ........12
2 Safety ..........................................................13
2.1 Introduction ....................................................13
2.2 Declaration of conformity/ type examinations ....14
.3 Type examination in accordance
2
2.3.1 Type examination (Module B) in accordance
2.3.2 Type conformity (Module C1) in accordance
2.4 EC type examination certification in accordance
2
2.6 Housing designations......................................26
2.7 Intended use ..................................................27
2.8 Inappropriate use ............................................27
2.9 Basic principles ..............................................28
2.10 Warning notices and symbols ..........................28
2.11 Responsibilities, organizational measures..........29
2.11.1 Responsibilities of the operator ........................29
2.11.2 Responsibilities of the personnel ......................29
2.11.3 Selection and qualification of personnel –
2.12 Product-specific hazards..................................30
2.12.1 Removal of electrode/sensor ............................30
2.12.2 Manipulation and maintenance work
2.12.3 Plastic housings ............................................31
2.12.4 Installation in pressurized systems ....................32
2.12.5 Installation in potentially explosive areas
2.13 Residual hazards ............................................33
2.13.1 Leaky connections ..........................................33
2.13.2 Medium residues ............................................33
2.13.3 Heat protection ..............................................33
2.13.4 External impacts ............................................34
2.14 Emergency measures ......................................34
2.15 Safety measures ............................................34
2.16 Modifications ................................................35
3 Product description ......................................36
3.1 Scope of delivery ............................................36
3.2 Packing ........................................................36
3.3 Checking the shipment ....................................36
3.4 Product overview ............................................37
Product key ..................................................................46
3.5 Functional description of the housing ..............48
ith directive 97/23/EC ..................................16
w
with directive 97/23/EC ..................................16
ith directive 97/23/EC ..................................16
w
with directive 94/9/EC ....................................17
.5 FM certificate ..................................................18
basic duties....................................................30
on the housings..............................................31
(hazardous areas) ..........................................32
© 02 /17 Mettler-Toledo GmbH CH- 8606 Greifensee
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InFit 76X e Series 7
4 Installation and start-up ................................49
4.1 Preparation of the equipment............................49
.2 Fitting and installation work..............................51
4
4.2.1 Fitting the housing ..........................................51
4.2.1.1 Fitting with a weld-in socket ............................51
4.2.1.2 Fitting with a flange ........................................52
.2.1.3 Fitting via NPT external thread ..........................52
4
.2.1.4 Fitting with Tri-Clamp and Varivent flange
4
connection ....................................................52
4.2.1.5 Installation with NPSM thread ..........................53
.2.2 Fitting the electrode/sensor ..............................53
4
.2.2.1 InFit 761 e ....................................................53
4
4.2.2.2 InFit 764 e ....................................................55
4.3 Startup procedures for housings........................57
.4 Dismantling work ..........................................58
4
4.4.1 Removing the insertion housing........................58
4.4.2 Removing the electrode/sensor ........................58
.5 Sterilization ..................................................61
4
5 Operation ......................................................62
.1 Important information for everyday operation......62
5
5.2 Inspection work in everyday operation ..............62
5.3 Cleaning the electrode/ sensor ........................63
5.4 Calibrating the measuring system ....................63
6 Maintenance..................................................64
6.1 Important information on maintenance ..............64
6.2 Topping up reference electrolyte ........................65
6.3 Replacement of medium- wetted seals ..............65
7 Trouble shooting ............................................68
8 Product specifications ....................................70
8.1 Technical data ................................................70
8.1.1 Technical specifications InFit 761 e ..................70
8.1.2 Technical specifications InFit 764 e ..................72
8.2 Spare parts and accessories ............................74
9 Terms of warranty ..........................................78
10 Decommissioning, storage, disposal ..............79
10.1 Decommissioning ..........................................79
10.1.1 Proceed as described in
Section 4.4 ”Dismantling work”. ......................79
10.1.2 Repair ............................................................79
10.2 Storage ........................................................79
10.3 Disposal ......................................................80
11 Appendices....................................................81
11.1 Electrode/sensor selection ................................81
© 02 /17 Mettler-Toledo GmbH CH- 8606 Greifensee
Printed in Switzerland 52 403 383
8 InFit 76X e Series
1 Introduction
– The insertion housing InFit 76Xe is safe to
operate and has been tested by METTLER
TOLEDO and dispatched ready for in stallation.
– Before starting to use the housing, care -
fully read this Instruction Manual: the
safety precautions and warnings con tained in it must be observed.
In addition to this Instruction Manual please
also note the following:
– All local safety regulations.
– All instructions and warning remarks in the
publications of the products that are used
in conjunction with the insertion housing
(electrodes, sensors, etc.).
– All safety precautions for the plant into
which the housing InFit 76X e will be
in stalled.
– All instructions and warnings labelled on
the housing InFit 76X e.
– All safety information relative to operation
in potentially explosive atmosphere/
hazardous areas (Ex classified zones).
© 02 /17 Mettler-Toledo GmbH CH- 8606 Greifensee
Printed in Switzerland 52 403 547
InFit 76X e Series 9
1.1 Ex declaration
1.1.1 Use in Ex classified areas
(hazardous areas)
Caution! For intended installation in an Ex
classified area, please observe the following
guidelines (ATEX 94/9/EC). The Ex declaration
is only valid for housings with medium-wetted
parts made of metallic material.
– Ex classification:
II 1/2G c IIC TX Ga/Gb
II 1/2D c IIIC TX Da/Db
– Designation and number of certificate:
SEV 13 ATEX 0161 X
1.1.2 Ex classification II 1/2G c IIC TX
Ga/Gb, II 1/2D c IIIC TX Da/Db,
designation and number of certificate
SEV 13 ATEX 161 X
According to RL 94/9/EG (ATEX 95) Appendix l,
InFit 76X/*1*2/*3/*4/*5/*6*7*8 housings are
devices group ll, category 1/2G and according
to RL 99/92/EG (ATEX 137) may be used in
zones 0/1 or 0/2 and gas group IIC that are potentially explosive due to combustible substances in the temperatures classes T3 to T6.
For use/installation, the requirements of
EN 60079-14 must be observed.
According to RL 94/9/EG (ATEX 95)Appendix l,
InFit 76X/*1*2/*3/*4/*5/*6*7*8 housings are
devices group Ill, category 1/2D and according
to RL 99/92/EG (ATEX 137) may also be used
in zones 20/21 resp. 20/22 that contain combustible dusts.
For use/installation, the requirements of
EN 50281-1-2 must be observed.
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10 InFit 76X e Series
Special conditions X for safe use
The housings with pneumatic actuation position of the sensors with electrical feedback signal may be operated in hazardous areas Zone
1 and Zone 2 or Zone 21 and Zone 22 with
separately certified intrinsically safe inductive
proximity switches e.g. Pepperl + Fuchs types
NCB2 ***- if the gas groups and temperature
classes coincide with the used flammable
substances and the special conditions of the
Certificates are observed.
1. The maximum permissible ambient or process temperatures for Zone 0 (flammable
gases or flammable liquids) shall be taken
according to the following table:
Temperature Max. ambient resp.
class TX process temperature
T6 68 °C
T5 80 °C
T4 108 °C
T3 140 °C
The maximum permissible ambient or process temperatures must not exceed the
aforementioned values and they will be
found in this instruction manual ”Section
8”.
2. The maximum permissible surface temperature for Zone 20 (combustible dust) shall
be taken accordingly to the following table:
Surface Max. ambient resp.
temp. TX process temperature
T 69 °C 68 °C
T 81 °C 80 °C
T 109 °C 108 °C
T 141 °C 140 °C
The maximum permissible ambient or process temperatures must not exceed the
aforementioned values and they will be
found in the instructions ”Section 8”.
3. The metallic body of the housing type
InFit 76X/*1/*2/*3/*4/*5/*6/*7/*8 has to
be connected conductively to the equipotential system of the plant.
4. The housings type InFit 76X/*1/*2/*3/*4/
*5/*6/*7/*8 are included in the periodic
pressure testing of the system, where appropriate.
Please refer to the ”Declaration of conformity”
on page 14 and 15 for detailed explanation of
the product key.
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Printed in Switzerland 52 403 547
InFit 76X e Series 11
1.2 FM certification
Caution! For intended installation in an Ex
classified area, please observe the following
guidelines. The Ex declaration is valid only for
housings with medium-wetted parts made of
metallic material.
– Ex classification:
IS CL I,II,III, Div 1, GR ABCDEFG/T6
)
1
ntrinsically safe, with Entity parameters, for use
I
n Class I,II,III, Division 1, Groups A, B, C, D, E,
i
and G hazardous (classified) locations in ac-
F
cordance with manufacturer’s control drawing
no. 53 800 002.
– Designation and number of the decla -
ration: Original project ID 3021227
(Note the drawing on the following page,
”Section 1.2.1”)
1)
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Printed in Switzerland 52 403 383
12 InFit 76X e Series
A
B
C
D
E
F
F
E
D
C
B
A
12345678
1234 5678
Index
Title
Drawing No
METTLER TOLEDO
Process Analytics
CH-8902 Urdorf
Drawn F.Kogelmann 11-Dez-03 Scale 1:1
Change Dario Meier 25-Mai-16 Format DIN A3
Schutzvermerk ISO 16016 beachten / Refer to protection notice ISO 16016
Note - Replaces -
FM control drawing
53800002
E.4
Model: MODEL NAME
E.4
ArtikelNr: 53800002
Drawing: E.4 Rel.Level: Released Sheet: 1
/
1
R
Notes:
1. No revision to this drawing is permitted without FMRC approval.
2. Vmax > Vt; Imax > It; (Ci of all loops + C cable) < Ca; (Li of all loops + L cable) < La
Pmax or Pi > Po
3. Single Multi-Channel IS Barrier or Apparatus must be FMRC Approved.
4. Single Multi-Channel IS Barrier or Apparatus manufacturer`s control drawings
must be followed when installing the System. IS Barrier or Equipment may be
installed within the Hazardous (Classified) location for which it is approved.
5. Installation must be in accordance with Article 500 of the NEC (ANSI/NFPA 70) and
ANSI/ISA RP12.6.
WARNING: substitution of components may inpair intrinsic safety.
Entity Parameters:
Vmax (Ui)=16V, Imax (Ii)=50mA, Pi=0.25W
Ci=0.1 uF, Li=0 mH
Probe
Class I, Division 1, Groups A, B, C and D
Class II, Division 1, Groups E, F, and G
Class III, Division 1
T6 Ta=60 C
HAZARDOUS (CLASSIFIED) LOCATION
Any FMRC Approved Single
Multi-Channel Barrier or Apparatus
NONHAZARDOUS LOCATION
1.2.1 Ex classification ”FM Approved”
drawing)
(
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InFit 76X e Series 13
2 Safety
2.1 Introduction
The Instruction Manual contains the most
important information for using the InFit 76Xe
housings efficiently and in accordance with
regulations. A basic condition for safe handling and operation without malfunctions is the
knowledge of these safety instructions and the
observance of the further warnings in the
Instruction Manual.
This Instruction Manual, and in particular the
safety regulations, are intended for personnel
entrusted with the operation and maintenance
of the housings. It is assumed that these
persons are familiar with the equipment in
which the housing is installed. Therefore,
before any work is started with the housing,
this Instruction Manual must be read and
understood by those persons involved.
The Instruction Manual must be stored where
it is constantly accessible and available to any
person working with the InFit 76X e housing.
On receipt of the shipment, check imme dia tely:
– the housing and accessories for any sign
of transport damage. Report any damage
immediately to the carrier and to your
supplier.
– the type designation on the housing body.
– for completeness of the supply. Please
notify your supplier immediately if the
shipment is incomplete or in any way
incorrect (see Section 3.1 ”Scope of
delivery”).
© 02 /17 Mettler-Toledo GmbH CH- 8606 Greifensee
Printed in Switzerland 52 403 383
14 InFit 76X e Series
2.2 Declaration of conformity/
type examinations
Attention: The ”Declarations of Conformity
and Type Examinations” are dependent on the
design and the individual type of housing, and
have no general validity for the complete InFit
product range.
Declarations of conformity and certificates
specific to particular products are available for
download in PDF format in the Product Info
Section of our Internet website (direct access
available via: www.mtpro.com/Service
1. Housings with CE marking with Notified
Body according to PED directives (Cat. 1
and Cat. 3) and Ex directives: mediumwetted parts made of metallic material
> DN25
2. Housings with CE marking with Notified
Body according to EX directives: mediumwetted parts made of metallic material
DN25
3. Housings with CE marking without Notified
Body according to PED directives (Cat. 1):
medium-wetted parts made of plastic
DN25.
4. Housings without CE marking: mediumwetted parts made of plastic DN25
).
© 02 /17 Mettler-Toledo GmbH CH- 8606 Greifensee
Printed in Switzerland 52 403 547
InFit 76X e Series 15
Example of a declaration of conformity:
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Printed in Switzerland 52 403 383
16 InFit 76X e Series
2.3 Type examination in
accordance with directive
97/23/EC
2.3.1 Type examination (Module B) in
2.3.2 Type conformity (Module C1) in
ccordance with directive 97/23/EC
a
accordance with directive 97/23/EC
© 02 /17 Mettler-Toledo GmbH CH- 8606 Greifensee
Printed in Switzerland 52 403 547
InFit 76X e Series 17
2.4 EC type examination certification in accordance with directive 94/9/EC
Certificate according to ATEX (page 1 of 3)
Certificate according to ATEX (page 2 of 3)
© 02 /17 Mettler-Toledo GmbH CH- 8606 Greifensee
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18 InFit 76X e Series
Certificates according to ATEX (page 3 of 3)
2.5 FM certificate
FM certificate (page 1 of 15):
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Printed in Switzerland 52 403 547
InFit 76X e Series 19
FM certificate (page 2 of 15):
FM certificate (page 3 of 15):
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20 InFit 76X e Series
FM certificate (page 4 of 15):
FM certificate (page 5 of 15):
© 02 /17 Mettler-Toledo GmbH CH- 8606 Greifensee
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InFit 76X e Series 21
FM certificate (page 6 of 15):
FM certificate (page 7 of 15):
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22 InFit 76X e Series
FM certificate (page 8 of 15):
FM certificate (page 9 of 15):
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InFit 76X e Series 23
FM certificate (page 10 of 15):
FM certificate (page 11 of 15):
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24 InFit 76X e Series
FM certificate (page 12 of 15):
FM certificate (page 13 of 15):
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Printed in Switzerland 52 403 547
InFit 76X e Series 25
FM certificate (page 14 of 15):
FM certificate (page 15 of 15):
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26 InFit 76X e Series
125 8
125 8
1
2.6 Housing designations
Housing designation as well as part and
serial numbers can be noted from the type
plate and used for clear identification when
communicating with the manufacturer.
Attention: The specifications shown on the
type plate are dependent on the design and the
individual type of housing and have no
general validity for the complete InFit product
range.
Label type 1:
Type plate in accordance with Ex directive
and PED directive 97/23/EC Cat. 3 + Cat. 1
Label type 2:
Type plate for Ex housings in accordance
with Ex directive
Label type 3:
Type plate for non-Ex housings in accordance
with PED directive 97/23/EC Cat. 1
Label type 4:
Type plate for non-Ex housings in
accordance with PED directive 97/23/EC
(art. 3, paragraph 3)
Label is used in combination
with label type 1 or 2
Label is used in combination
with label type 3 or 4
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