Knick SensoGate WA 132 Series User manual

The Art of Measuring.
Information: www.knick-international.com
SensoGate WA 132
Retractable Fitting with PTFE Process Adaptation
User Manual

Table of Contents
SensoGate WA 132
Safety Instructions ........................................................................................................................... 3
Intended Use..................................................................................................................................... 5
Symbols and Markings.................................................................................................................................................................. 5
Rating Plates ..................................................................................................................................................................................... 6
Package Contents ........................................................................................................................................................................... 6
SensoGate WA 132 Product Coding................................................................................................7
Function Description........................................................................................................................ 8
Overview of Retractable Fitting......................................................................................................9
Modular Design: Drive Unit, Immersion Tube, Process Adaptation...........................................................................10
SensoLock .......................................................................................................................................11
Media Connection ..........................................................................................................................12
Installing the Media Connection.............................................................................................................................................12
SERVICE Position ............................................................................................................................13
PROCESS Position...........................................................................................................................14
Installing and Removing a Sensor ................................................................................................15
Sensors with Solid Electrolyte.......................................................................................................16
Short Immersion Depth..............................................................................................................................................................16
Installing the Sensor ................................................................................................................................................................16
Removing the Sensor..............................................................................................................................................................18
Long Immersion Depth...............................................................................................................................................................19
Installing the Sensor ................................................................................................................................................................19
Removing the Sensor..............................................................................................................................................................21
Sensors with Liquid Electrolyte.....................................................................................................23
Installing the Sensor ................................................................................................................................................................23
Removing the Sensor..............................................................................................................................................................24
Drive Unit ........................................................................................................................................25
Removing the Drive Unit .......................................................................................................................................................25
Installing the Drive Unit .........................................................................................................................................................26
Immersion Tube ..............................................................................................................................27
Replacing the Immersion Tube............................................................................................................................................27
Removing the Immersion Tube...........................................................................................................................................28
Installing the Immersion Tube .............................................................................................................................................29
Calibration Chamber......................................................................................................................30
Removing the Calibration Chamber..................................................................................................................................30
Installing the Calibration Chamber....................................................................................................................................31
Installation Dimensions.................................................................................................................32
Specifications..................................................................................................................................36
Maintenance ...................................................................................................................................37
Maintenance Intervals.................................................................................................................................................................37
Servicing the Immersion Tube .................................................................................................................................................37
Servicing the Drive Unit .............................................................................................................................................................38
Lubricants, O-Rings ......................................................................................................................................................................38
Sealing Kits for Maintenance and Servicing .......................................................................................................................39
Accessories / Spare Parts ...............................................................................................................40
Declaration of Contamination.......................................................................................................42
Index................................................................................................................................................43
2

Registered Trademarks
The following trademarks are used in this manual without further marking:
SensoGate®, SensoLock®, Unical®, Uniclean®, Protos®
are registered trademarks of Knick Elektronische Messgeräte GmbH & Co. KG, Germany
Return of Products/Return Form
Please contact our Service Team before returning a defective device. Ship the cleaned device to
the address you have been given. If the device has been in contact with process fluids, it must be
decontaminated/disinfected before shipment. In that case, please attach a corresponding return
form (see page 43), for the health and safety of our service personnel.
Safety Instructions
SensoGate WA 132
Process-Related Risks
Knick Elektronische Messgeräte GmbH & Co. KG assumes no liability for damages
caused by process-related risks known to the operator, which would in fact not permit
the use of the retractable fitting.
For your own safety, be sure to observe the following precautions:
Work on the retractable fitting shall only be performed by personnel authorized by the
operating company and specially trained for handling and operating the retractable
fitting.
Be sure to take account of the influences of humidity, ambient temperature, chemicals,
and corrosion on the safe operation of the retractable fitting.
4 to 7 bar
Rinsing water: max. 7 bar
Made in Germany
-10 to 70 °C
Retractable probe / Drive unit
No self-heating For temp specs see manual
14163 Berlin 66
IP
SensoGate®
SensoGate®
4 to 7 bar
max. 7 bar
Tamb -10 to 70 °C
Drive unit
0044
Made in Germany
Made in Germany
For Ex specs see drive unit KEMA 07 ATEX 0065
SensoGate®
SensoGate®
Type
Type
No.
No.
Insertion fitting
Insertion fitting
WA130-N*, WA130-X*,
WA132-N*, WA132-X*
Prozess
0044
3
The SensoGate WA 132 retractable fitting has been developed and manufactured in compli-
ance with the applicable European guidelines and standards. Compliance with the European
Harmonized Standards for use in hazardous locations is confirmed by the EU Type Examination
ean direCertificate. Compliance with the Europ ctives and standards is confirmed by the
nformity an E markiEUDeclaration of Co d the C ng.

Safety Instructions
SensoGate WA 132
Operation in Explosive Atmospheres
The SensoGate WA132-X is certified for operation in explosive atmospheres.
• EU-Type Examination Certificate KEMA04ATEX4035X
Exceeding the standard atmospheric conditions within the manufacturer’s specifications, such as ambient tem-
perature, process pressure and temperature, does not impair the durability of the retractable fittings.
Related certificates are included in the product’s scope of delivery and are available at www.knick.de in the cur-
rent version.
Observe all applicable local and national codes and standards for the installation of equipment in explosive at-
mospheres. For further guidance, consult the following:
• IEC60079-14
• EU directives 2014/34/EU and 1999/92/EC(ATEX)
Possible Ignition Hazards During Installation and Maintenance
To avoid mechanically generated sparks, handle the SensoGate WA132-X with care and apply suitable measures,
e.g., use covers and pads.
The metallic parts of the SensoGate WA132-X must be connected to the plant’s equipotential bonding using the
metallic process connection and the grounding connection provided for that purpose.
When components are replaced with genuine Knick spare parts made of other materials (e.g. O-rings), the infor-
mation given on the nameplate may deviate from the actual version of the SensoGate WA132-X. The operating
company must assess and document this deviation.
Electrostatic charging
The drive unit of specific versions of the SensoGate WA132-X contains housing components made of non-con-
ductive plastic. Due to their surface, the housing components may build up an electrostatic charge. To prevent
this charge from becoming an effective ignition source in Zone0, ensure that the following conditions are met:
• Highly efficient charge generating mechanisms are excluded
• Non-metallic components are cleaned with a moist cloth only
Mechanically generated sparks
Single impacts on metal parts or collisions between metal parts of the SensoGate WA132-X are not a potential
ignition source only if the following conditions are met:
• Possible impact velocity is less than 1 m/s
• Possible impact energy is less than 500 J
If these conditions cannot be ensured, the operating company must reassess single impacts on metal parts or
collisions between metal parts as potential sources of ignition. The operating company must implement suitable
risk minimization measures, e.g., by ensuring a non-explosive atmosphere.
Possible Ignition Hazards During Operation
When using non-water-based cleaning, rinsing, or calibration media with a low conductivity of less than 1nS/m,
electrostatic charging of internal, conductive components may occur. The operating company must assess the
associated risks and implement appropriate measures.
The sensors that are used must be approved for operation in hazardous locations. Further information can be
found in the sensor documentation.
Electrostatic charging
The wetted components of the SensoGate WA132-X process unit are made of non-conductive PTFE plastic. The
components can build up an electrostatic charge. To prevent this charge from becoming an effective ignition
source, ensure that the following conditions are met:
• Efficient charge generating mechanisms are excluded
• Process media are grounded and have a minimum conductivity of 10 nS/cm
If these conditions cannot be ensured, operation in Zone0 and Zone1 is not permitted.
4

5
Intended Use
SensoGate WA 132
Intended Use
The SensoGate WA 132 is a pneumatically operated retractable fitting. It allows sensors to be
immersed in and retracted from liquid media, e.g., for process analytics.
The SensoGate WA 132 retractable fitting allows:
•immersing and retracting the sensor under process pressure (retractable fitting)
•calibrating or adjusting the measuring system under process conditions
(pressure and temperature)
• cleaning the sensor in the running process (optional)
• replacing the sensor in the running process (in Service position)
•variable process adaptation by the customer
The retractable fitting is suitable for sensors with a sensor diameter of 12 mm and a PG 13.5
thread. The following sensors can be installed:
• sensor with solid electrolyte, 225 mm long
•sensor with liquid electrolyte, 250 mm long
Safe Use
If you are not sure whether the retractable fitting can be safely used for your
intended application, always contact Knick!
To ensure safe use of the equipment, you must observe the temperature and
pressure ranges given in the Specifications of this user manual.
Symbols and Markings
Symbol Meaning
Compressed air: 4 to 7 bar
Rinsing water: max. 7 bar
Made in Germany
-10 to 70 °C
Retractable probe / Drive unit
KEMA 07ATEX 0065
No self-heating For temp specs see manual
14163 Berlin 66
IP
SensoGate®
SensoGate®
4 to 7 bar
max. 7 bar
Tamb -10 to 70 °C
Drive unit
0044
Made in Germany
Made in Germany
For Ex specs see drive unit KEMA 07 ATEX 0065
SensoGate®
SensoGate®
Type
Type
No.
No.
Insertion fitting
Insertion fitting
Schilder
WA130-N*, WA130-X*,
WA132-N*, WA132-X*
Prozess
0044
CE marking with number of the notified body for the EU Type Examination
Certificate
4 to 7 bar
Rinsing water: max. 7 bar
Made in Germany
-10 to 70 °C
Retractable probe / Drive unit
No self-heating For temp specs see manual
14163 Berlin 66
IP
SensoGate®
SensoGate®
4 to 7 bar
max. 7 bar
Tamb -10 to 70 °C
Drive unit
0044
Made in Germany
Made in Germany
For Ex specs see drive unit KEMA 07 ATEX 0065
SensoGate®
SensoGate®
Type
Type
No.
No.
Insertion fitting
Insertion fitting
WA130-N*, WA130-X*,
WA132-N*, WA132-X*
Prozess
0044
ATEX marking for the operation of equipment in hazardous locations with device
classification (see page 36)
4 to 7 bar
Rinsing water: max. 7 bar
Made in Germany
Drive unit
No self-heating For temp specs see manual
14163 Berlin 66
IP
SensoGate®
SensoGate®
4 to 7 bar
max. 7 bar
mb -10 to 70 °C
Drive unit
0044
Made in Germany
Made in Germany
For Ex specs see drive unit KEMA 07 ATEX 0065
SensoGate®
SensoGate®
Type
Type
No.
No.
Insertion fitting
Insertion fitting
WA130-N*, WA130-X*,
WA132-N*, WA132-X*
Prozess
0044
Do not open the device! Read this user manual, observe the Specifications, and
follow the safety instructions.
4 to 7 bar
Rinsing water: max. 7 bar
Made in Germany
unit
No self-heating For temp specs see manual
14163 Berlin 66
IP
SensoGate®
SensoGate®
4 to 7 bar
max. 7 bar
to 70 °C
0044
Made in Germany
Made in Germany
For Ex specs see drive unit KEMA 07 ATEX 0065
SensoGate®
SensoGate®
Type
Type
No.
No.
Insertion fitting
Insertion fitting
WA130-N*, WA130-X*,
WA132-N*, WA132-X*
Prozess
0044
Ingress protection of the housing against dust and humidity
Outlet symbol
Tamb Ambient temperature

6
Intended Use
SensoGate WA 132
Package Contents
Check the shipment for transport damage and completeness.
The package should contain:
•Retractable fitting
• Documentation
•Test certificates
Compressed air: 4 to 7 bar
Rinsing water: max. 7 bar
Tamb Made in Germany
-10 to 70 °C
Retractable probe / Drive unit
Type
No.
SensoGate®
0044
Made in Germany
Made in Germany
For Ex specs see drive unit KEMA 07 ATEX 0065
SensoGate®
SensoGate®
Type
Type
No.
No.
Insertion fitting
Insertion fitting
Antrieb
Schilder
WA130-N*, WA130-X*,
WA132-N*, WA132-X*
Prozess
nicht Ex
KEMA 07ATEX 0065
II 1 G/D c II
No self-heating For temp specs see manual
14163 Berlin 66
IP
SensoGate®
Compressed air: 4 to 7 bar
Rinsing water: max. 7 bar
Tamb
Made in Germany
-10 to 70 °C
Drive unit
Made in Germany
Made in German
KEMA 07 AT
Type
Type
Type
No.
No.
No.
Antrieb
Schilder
WA130-N*, WA130-X*,
WA132-N*, WA132-X*
Prozess
nicht Ex
Ex
0044
4 to 7 bar
Rinsing water: max. 7 bar
Made in Germany
/ Drive unit
No self-heating For temp specs see manual
14163 Berlin 66
IP
SensoGate®
SensoGate®
4 to 7 bar
max. 7 bar
mb -10 to 70 °C
Drive unit
Made in Germany
SensoGate®
Type
No.
Insertion fitting
WA130-N*, WA130-X*,
WA132-N*, WA132-X*
Prozess
0044
Compressed air: 4 to 7 bar
Rinsing water: max. 7 bar
Tamb Made in Germany
-10 to 70 °C
Retractable probe / Drive unit
Type
No.
KEMA 07ATEX 0065
II 1 G/D c II
No self-heating For temp specs see manual
14163 Berlin 66
IP
SensoGate®
SensoGate®
Compressed air: 4 to 7 bar
Rinsing water: max. 7 bar
Tamb
Made in Germany
-10 to 70 °C
Drive unit
0044
Made in Germany
For Ex specs see drive unit KEMA 07 ATEX 0065
SensoGate®
Type
Type No.
No.
Insertion fitting
Antrieb
Schilder
WA130-N*, WA130-X*,
WA132-N*, WA132-X*
Prozess
nicht Ex
Ex
0044
!CAUTION!
Take caution when using water from drinking water pipes for the water connection!
Observe the general requirements of protection devices to prevent pollution of potable water
(EN1717).
We recommend installing a check valve on the water inlet, e.g., on the water valve provided by
the customer or on the rinse connection of the retractable fitting (inlet to calibration chamber) to
prevent backflow of rinse or process medium or compressed air into the water pipe.
Suitable check valves made from different materials are available from Knick.
Drive
Process
SensoGate® WA 132-X
Drive
Process
Rating Plates
SensoGate® WA 132-N
66
IP
Max. pressure
Temperature range
14163 Berlin Made in Germany
SensoGate ®
Retractable Fitting / Drive Unit
Type
No.
14163 Berlin Made in Germany
SensoGate®
Typ e
No.
Process Unit
66
IP
Max. pressure
Temperature range
14163 Berlin Made in Germany
Sensogate ®
Retractable Fitting / Drive Unit
Type
No.
0044
KEMA 04 ATEX 4035X
T6 ... T3 Ga
II 1 G Ex h IIC
II 1 D x h IIIC T80°C ... 140°C DaE
No self-heating
Special conditions
WARNING - Potential electrostatic charging hazard
-- see instruction
... 70 °C
Tamb -10
Max. pressure
Temperature range
Type No.
See Drive Unit
for Ex marking
0044
SensoGate®
Process Unit
14163 Berlin
Made in Germany

7
SensoGate WA 132 Product Coding
SensoGate WA 132
* Material combinations: process-wetted part of calibration chamber / rinse-wetted part of calibration chamber /
immersion tube
WA 132-
Explosion
protection
For ATEX Zone 0 X
No N
Sensor Sensor, Ø 12mm, with PG 13.5 0
pH sensor, Ø 12mm, pressurized 1
Gasket material FKM A
EPDM B
EPDM - FDA E
FKM - FDA F
FFKM - FDA H
FFKM K
Process-wetted
materials*
PTFE R
Process adaptation Loose flange, 1.457, PN10/16, DN 32 B 0
Loose flange, 1.457, PN10/16, DN 40 B A
Loose flange, 1.457, PN10/16, DN 50 B 1
Loose flange, 1.457, PN10/16, DN 65 B 2
Loose flange, 1.457, PN10/16, DN 80 B 3
Loose flange, 1.457, PN10/16, DN 100 B 4
Loose flange, ANSI 316, 150 lbs, 2" D 1
Loose flange, ANSI 316, 150 lbs, 2 ½" D 2
Loose flange ANSI 316, 150 lbs, 3” * D 3
Loose flange, ANSI 316, 150 lbs, 3 ½" D 4
Fitting, DIN 3237-2, PN16, DN 40 T A
Fitting, DIN 3237-2, PN16, DN 50 T 1
Loose flange, 1.4571, DN40, for plane flange made of glass U A
Loose flange, 1.4571, DN50, for plane flange made of glass U 1
Immersion depth Short A
Long B
Connection Media connection, PP A
Media connection, PEEK B
Media connection, PEEK, with integr. connection for additional medium C
Special version Without 0 0 0
Equipped with special grease (provided by customer) 1
Customer-specific special datasheet F
Example of a possible order code: WA 132-X0ARB1BA31-00F
X Explosion protection, ATEX Zone 0
0Suitable for sensors with a sensor diameter of 12mm
A Gasket material: FKM
R Process-wetted materials made of PTFE
B1 Loose flange, PN 10 / 16, DN 50 made of stainless steel 1.4571
B Long immersion depth
A Without electrical limit signal
3inlet with PFA hose coupling NW4 /6, outlet with PFA hose coupling NW 6 /8,
with (optional) outlet hose made of PTFE, 3 m
1 Housing made of stainless steel/PP
F Customer-specific special datasheet

8
Mounting
• Possible mounting angle 15° above horizontal:
•Mounting angle 360° (i.e. even upside down)
for special sensors only containing thickened
electrolytes which thus cannot flow.
15°
15°
Function Description
SensoGate WA 132
The retractable fitting can be moved to two positions using compressed air:
• PROCESS position: The sensor is located in the process medium.
• SERVICE position: The sensor is located in the calibration chamber.
In SERVICE position you can clean, maintain, calibrate or adjust the measuring system.
Using compressed air, a control unit such as the Unical 9000 moves the sensor between SERVICE
position and PROCESS position and leads the different calibration or cleaning liquids to the sensor
when it is located in the calibration chamber. These liquids leave the calibration chamber through
an outlet hose, i.e., they are displaced from the calibration chamber by following liquids or by
compressed air.
For operating the SensoGate, you must connect control air and rinsing or calibration media to the
SensoGate. There are two possible ways to do so.
•When the SensoGate is operated with a Unical or Uniclean electro-pneumatic controller and the
Protos measuring system, the cables and tubings for air pressure and rinsing/calibration media
are combined in a single hose with just one plug connection. This hose is referred to as media
connection. This media connection is installed on the SensoGate together with the outlet hose.
•When you do not use an electro-pneumatic controller (Unical or Uniclean and Protos measuring
system), you can connect the supply lines for control air and rinsing/calibration media with a
free hose connection via adapters ZU0742 / ZU 0733 / ZU 0734 (see page 40).
To replace the sensor, you must move the retractable fitting to the SERVICE position
(see page 13) and secure it using SensoLock (see page 11).

9
Overview of Retractable Fitting
SensoGate WA 132
The SensoGate retractable fitting has a modular design. This allows the drive unit, immersion tube
and process adaptation to be exchanged. The retractable fitting consists of two main units:
The drive unit performs the required movements to move the sensor into and out of the process.
The process adaptation comprises the process-wetted part of the calibration chamber.
Drive unit and process adaptation can be separated, see page 25.
Drive unit
Process adaptation
Fixing bracket
SensoLock
Coupling nut
Calibration
chamber
Immersion tube
Media connection
to Unical 9000(X)
electro-pneumatic
controller
(optional)
Leakage bore
Multiplug
Outlet connection
with outlet hose
Sensor holder
Loose flange with
flange bushing

Modular Design: Drive Unit, Immersion Tube, Process Adaptation
10
Overview of Retractable Fitting
SensoGate WA 132
Short immersion depth
Sensors with
solid electrolyte
Long immersion depth
Sensors with
solid electrolyte
Short immersion depth
Sensors with
liquid electrolyte
Drive Units
Process adaptation
•DIN and ANSI loose flanges
Immersion Tubes
LongShort Bayonet coupling
Material: stainless steel, 1.4571
Immersion tube
Material: PTFE
Process Adaptation

11
SensoLock
SensoGate WA 132
The SensoLock ring securely blocks the retractable fitting in SERVICE position. Twisting the
SensoLock ring to the “lock“ position mechanically locks the internal lift piston and thus prevents
the retractable fitting from moving to PROCESS position. The SensoLock ring can only be rotated
when in SERVICE position. In PROCESS position and all intermediate positions the SensoLock ring
is blocked.
Before starting maintenance work or replacing a sensor,
•move the retractable fitting to the SERVICE position.
•twist the SensoLock ring to the “lock” position.
Twisting the SensoLock ring to the “lock“ position
prevents the immersion in the process when the
sensor has been removed (locking the travel move-
ment, safety function).
After the sensor has been installed, you can unlock the
travel movement by twisting the SensoLock ring to
“unlock”.

12
Media Connection
SensoGate WA 132
1) Screw the hose bracket (M) of the media con-
nection to the fixing bracket (H) of the retract-
able fitting (illustration: The 3× 2 threaded
holes on the fixing bracket allow different
arrangements).
H
M
2) Screw the multiplug (AB) of the media connec-
tion to the connection (AC) of the retractable
fitting.
3) Connect the outlet hose (AF)
using the hose coupling (AE).
AB
AC
AEAF
Installing the media connection with multiplug and Unical9000(X) electro-pneumatic controller
Installing the Media Connection

13
SERVICE Position
SensoGate WA 132
The SERVICE position is
indicated by the sensor
head (J) protruding out
of the drive unit (AD).
The SERVICE position is
indicated by the service
cap (L) protruding out of
the extension.
The SERVICE position
is indicated by the
rubber bellows (B) being
expanded.
Short immersion depth
Solid-electrolyte sensor
Short immersion depth
Liquid-electrolyte sensor
Long immersion depth
Solid-electrolyte sensor
JB
L
The following illustrations clearly show the SERVICE position:
AD

14
PROCESS Position
SensoGate WA 132
Short immersion depth
Solid-electrolyte sensor
Short immersion depth
Liquid-electrolyte sensor
Long immersion depth
Solid-electrolyte sensor
The PROCESS position is
indicated by the sensor
connector not protruding
out of the drive unit (AD).
The PROCESS position is
indicated by the sensor cap
not protruding out of the
extension (V).
The PROCESS position
is indicated by the
rubber bellows (B) being
compressed.
B
The following illustrations clearly show the PROCESS position:
V
AD

15
Installing and Removing a Sensor
SensoGate WA 132
NOTICE! Sensors shall only be installed or removed by personnel authorized by the
operating company and trained in the handling of the retractable fitting. To replace
the sensor, you must move the retractable fitting to the SERVICE position (see page
13) and secure it using SensoLock (see page 11).
Be sure to follow the assembly instructions step by step.
Preparations:
•Check whether the sensor is damaged (e.g., glass broken).
Never install a damaged sensor.
•Check whether slide washer or O-ring on the sensor are damaged and replace if required.
•Remove the watering cap from the sensor tip and rinse sensor with water.
•Internally pressurized sensors might have a silicone seal on the diaphragm
(as transport protection). Remove this seal using the knife shipped with the sensor.

16
Installing the Sensor
1) Before installing the sensor, make sure that the
retractable fitting is in SERVICE position.
2) Use appropriate sensors (A) only:
Diameter: 12 mm
Length: 225 mm
Observe the pressure resistance of the sensor.
3) Make sure that the slide washer (C) and the
O-ring (D) are correctly positioned and not
damaged.
A
J
C
D
Sensors with Solid Electrolyte
SensoGate WA 132
ZU 0647
4) Screw in the sensor head (J) (19 mm A/F, PG13.5
thread) with a max. torque of 3 Nm (recom-
mended tool: 19 mm mounting wrench, e.g.,
Knick ZU0647).
The sensor connector protrudes out of the drive
unit.
Short Immersion Depth

17
6) Connect the equipotential bonding cable
to terminal (F) (if required).
Sensors with Solid Electrolyte
SensoGate WA 132
F
G5) Connect the cable jack (G).
Hold the cable in a loop and fix it using
clamp (E).
NOTICE! The cable loop must be long
enough so that the cable does not impede
the stroke movement of the fitting.
E
E
Short Immersion Depth

18
Sensors with Solid Electrolyte
SensoGate WA 132
Removing the Sensor
1) Only remove the sensor when the retractable fitting is in
SERVICE position:
Move the SensoGate retractable fitting to SERVICE posi-
tion and secure it with SensoLock (the sensor connector
protrudes out of the drive unit).
2) Remove the cable jack (G).
3) Before removing the sensor, check that there is no
liquid leaking from the outlet (process sealing might be
defective).
4) Remove the sensor (recommended tool:
19 mm mounting wrench, e.g., Knick ZU 0647).
5) Check whether the slide washer (C) or the O-ring (D) are
damaged.
NOTICE!
When replacing damaged sensors (glass breakage), be sure to
check the sensor seal in the immersion tube and replace it
if required. (See page 29.)
C
D
G
ZU 0647
Short Immersion Depth

19
Sensors with Solid Electrolyte
SensoGate WA 132
Installing the Sensor
1) Before installing the sensor, make sure that the
retractable fitting is in SERVICE position
(red service cap (L) is visible).
2) Use appropriate sensors (A) only:
Diameter: 12 mm
Length: 225 mm
Observe the pressure resistance of the sensor.
3) Make sure that the slide washer (C) and the O-ring
(D) are correctly positioned and not damaged.
ZU 0647
C
D
V
G
A
L
J
Long Immersion Depth
4) Insert the sensor and screw in the sensor head (J)
(19 mm A/F, PG 13.5 thread) with a max. torque of
3Nm (recommended tool: 19 mm mounting wrench,
e.g., Knick ZU 0647).
5) Thread the cable jack (G) through the extension (V).
6) Connect the cable jack (G) with the sensor plug
(connection with coupling nut).

20
Sensors with Solid Electrolyte
SensoGate WA 132
NOTICE! The cable loop must be long enough
so that the cable does not impede the stroke
movement of the fitting. When the cable is
installed for the first time, you must first pull off
the split red service cap (L).
7) Attach the extension (V) and turn it clockwise
until it noticeably snaps in.
V
L
V
L
F
E
8) Put the split (red) service cap (L) on the cable as
shown. Then push it into the extension (V) until
it noticeably snaps in.
9) Hold the sensor cable in a loop and fix it
using clamp (E).
10)Connect the equipotential bonding cable to
terminal (F) (if required).
Long Immersion Depth
Installing the Sensor (continued)