Endress+Hauser Waterpilot FMX21 User manual

Products Solutions Services
Operating Instructions
Waterpilot FMX21
Hydrostatic level measurement
4 to 20 mA HART
BA00380P/00/EN/19.22-00
71593280
2022-09-12
Valid as of version
01.00.zz

Waterpilot FMX21
2 Endress+Hauser
Order code:
Ext. ord. cd.:
Ser. no.:
www.endress.com/deviceviewer Endress+Hauser
Operations App
XXXXXXXXXXXX
XXXXX-XXXXXX
XXX.XXXX.XX
Serial number
1.
3.
2.
A0023555
• Make sure the document is stored in a safe place such that it is always available when
working on or with the device.
• To avoid danger to individuals or the facility, read the "Basic safety instructions" section
carefully, as well as all other safety instructions in the document that are specific to
working procedures.
• The manufacturer reserves the right to modify technical data without prior notice. Your
Endress+Hauser distributor will supply you with current information and updates to this
manual.

Waterpilot FMX21 Table of contents
Endress+Hauser 3
Table of contents
1 About this document ................ 5
1.1 Document function ..................... 5
1.2 Symbols .............................. 5
1.3 Documentation ........................ 6
1.4 Registered trademarks ................... 7
1.5 Terms and abbreviations ................. 8
1.6 Turn down calculation ................... 9
2 Basic safety instructions ........... 10
2.1 Requirements for personnel .............. 10
2.2 Intended use ......................... 10
2.3 Workplace safety ...................... 10
2.4 Operational safety ..................... 10
2.5 Product safety ........................ 11
3 Product description ................ 12
3.1 Function ............................ 12
4 Incoming acceptance and product
identification ..................... 13
4.1 Incoming acceptance ................... 13
4.2 Product identification ................... 13
4.3 Nameplates .......................... 14
4.4 Identification of sensor type .............. 15
4.5 Storage and transport .................. 15
5 Mounting ......................... 17
5.1 Mounting requirements ................. 17
5.2 Additional mounting instructions .......... 18
5.3 Dimensions .......................... 18
5.4 Mounting the Waterpilot with a suspension
clamp .............................. 19
5.5 Mounting the device with a cable mounting
screw .............................. 20
5.6 Mounting the terminal box .............. 21
5.7 Mounting the TMT72 temperature head
transmitter with terminal box ............ 21
5.8 Mounting the terminal strip for the Pt100
passive (without TMT72) ................ 22
5.9 Inserting the cable into the RIA15 field
housing ............................ 23
5.10 Cable marking ........................ 23
5.11 Cable shortening kit .................... 24
5.12 Post-mounting check ................... 24
6 Electrical connection .............. 25
6.1 Connecting the device .................. 25
6.2 Supply voltage ........................ 29
6.3 Cable specifications .................... 29
6.4 Power consumption .................... 29
6.5 Current consumption ................... 29
6.6 Connecting the measuring unit ........... 30
6.7 Post-connection check .................. 33
7 Operation options ................. 35
7.1 Overview of operation options ............ 35
7.2 Operating concept ..................... 36
7.3 Structure of the operating menu ........... 37
7.4 Locking/unlocking operation ............. 37
7.5 Resetting to factory settings (reset) ........ 39
8Integrating device via HART®
protocol .......................... 40
8.1 HART process variables and measured
values .............................. 40
8.2 Device variables and measured values ....... 41
9 Commissioning .................... 42
9.1 Function check ....................... 42
9.2 Unlocking/locking configuration .......... 42
9.3 Commissioning ....................... 42
9.4 Selecting the measuring mode ............ 42
9.5 Selecting the pressure engineering unit ..... 43
9.6 Position adjustment .................... 43
9.7 Configuring the damping ................ 44
9.8 Configuring pressure measurement ........ 45
9.9 Configuring level measurement ........... 47
9.10 Automatic density compensation .......... 58
9.11 Linearization ......................... 61
9.12 Manual entry of a linearization table via
operating tool ........................ 64
9.13 Backing up or duplicating the device data .... 64
9.14 Operation and settings via RIA15 .......... 65
10 Diagnostics and troubleshooting ... 70
10.1 Troubleshooting ...................... 70
10.2 Diagnostic events in the operating tool ...... 70
10.3 Troubleshooting specific to the device with
optional Pt100 ....................... 76
10.4 Troubleshooting specific to TMT72
temperature head transmitter ............ 76
10.5 Response of output to errors .............. 77
10.6 Firmware history ...................... 77
11 Maintenance ...................... 78
11.1 Exterior cleaning ...................... 78
12 Repair ............................ 79
12.1 General information ................... 79
12.2 Spare parts .......................... 79
12.3 Return .............................. 79
12.4 Disposal ............................ 79

Table of contents Waterpilot FMX21
4 Endress+Hauser
13 Overview of the operating menu .... 80
13.1 Overview of parameters in the "Expert" menu .83
14 Description of device parameters ... 88
14.1 Expert → System ...................... 88
14.2 Expert → System → Instrument info ........ 89
14.3 Expert → System → Management .......... 91
14.4 Expert → Measurement → Measuring mode .. 91
14.5 Expert → Measurement → Basic setup ....... 92
14.6 Expert → Measurement → Pressure ........ 94
14.7 Expert → Measurement → Level ........... 96
14.8 Expert → Measurement → Linearization .... 101
14.9 Expert → Measurement → Sensor limits .... 104
14.10 Expert → Measurement → Sensor trim ..... 105
14.11 Expert → Output → Current output ........ 106
14.12 Expert→ Communication → HART config. ... 110
14.13 Expert→ Communication → HART info ..... 112
14.14 Expert→ Communication → HART output ... 114
14.15 Expert→ Communication → HART input .... 117
14.16 Expert → Application .................. 119
14.17 Expert → Diagnosis ................... 120
14.18 Expert → Diagnosis → Diagnostic list ....... 122
14.19 Expert → Diagnosis→ Event logbook ....... 123
14.20 Expert → Diagnosis → Simulation ......... 124
15 Accessories ...................... 126
15.1 Service-specific accessories .............. 129
16 Technical data ................... 130
16.1 Input .............................. 130
16.2 Output ............................ 132
16.3 Performance characteristics ............. 135
16.4 Environment ........................ 137
16.5 Process ............................ 139
16.6 Additional technical data ............... 140
Index ................................. 141

Waterpilot FMX21 About this document
Endress+Hauser 5
1 About this document
1.1 Document function
These Operating Instructions contain all the information that is required in various phases
of the life cycle of the device: from product identification, incoming acceptance and
storage, to mounting, connection, operation and commissioning through to
troubleshooting, maintenance and disposal.
1.2 Symbols
1.2.1 Safety symbols
DANGER
This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in
serious or fatal injury.
WARNING
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
serious or fatal injury.
CAUTION
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
minor or medium injury.
NOTICE
This symbol contains information on procedures and other facts which do not result in
personal injury.
1.2.2 Electrical symbols
Direct current
Alternating current
Direct and alternating current
Ground connection
Grounded clamp, which is grounded via a grounding system.
Protective earth (PE)
Ground terminals, which must be grounded prior to establishing any other connections.
The ground terminals are located on the inside and outside of the device.
Equipotential connection
A connection that has to be connected to the plant grounding system: This may be a
potential equalization line or a star grounding system depending on national or company
codes of practice.
1.2.3 Tool symbols
Flat blade screwdriver
Phillips screwdriver
Allen key
Open-ended wrench

About this document Waterpilot FMX21
6 Endress+Hauser
1.2.4 Symbols for certain types of information
Permitted
Procedures, processes or actions that are permitted
Preferred
Procedures, processes or actions that are preferred
Forbidden
Procedures, processes or actions that are forbidden
Tip
Indicates additional information
Reference to documentation
A
Reference to page
Reference to graphic
1.
,
2.
,
3.
Series of steps
Result of a step
Help in the event of a problem
Visual inspection
1.2.5 Symbols in graphics
1, 2, 3, ...
Item numbers
1.
,
2.
,
3.
Series of steps
A, B, C, ...
Views
A-A, B-B, C-C etc.
Sections
1.3 Documentation
The following types of documentation are available in the Download Area of the Endress
+Hauser website (www.endress.com/downloads):
For an overview of the scope of the associated Technical Documentation, refer to the
following:
•W@M Device Viewer (www.endress.com/deviceviewer): Enter the serial number
from the nameplate
•Endress+Hauser Operations App: Enter the serial number from the nameplate or
scan the matrix code on the nameplate
1.3.1 Technical Information (TI)
Planning aid
The document contains all the technical data on the device and provides an overview of
the accessories and other products that can be ordered for the device.

Waterpilot FMX21 About this document
Endress+Hauser 7
1.3.2 Brief Operating Instructions (KA)
Guide that takes you quickly to the 1st measured value
The Brief Operating Instructions contain all the essential information from incoming
acceptance to initial commissioning.
1.3.3 Safety Instructions (XA)
Depending on the approval, the following Safety Instructions (XA) are supplied with the
device. They are an integral part of the Operating Instructions.
The nameplate indicates the Safety Instructions (XA) that are relevant to the device.
1.4 Registered trademarks
1.4.1 GORE-TEXâ
Trademark of W.L. Gore & Associates, Inc., USA.
1.4.2 TEFLONâ
Trademark of E.I. Du Pont de Nemours & Co., Wilmington, USA.
1.4.3 HARTâ
Registered trademark of the FieldComm Group, Austin, USA
1.4.4 FieldCareâ
Trademark of Endress+Hauser Process Solutions AG.
1.4.5 DeviceCareâ
Trademark of Endress+Hauser Process Solutions AG.
1.4.6 iTEMPâ
Trademark of Endress+Hauser Wetzer GmbH + Co. KG, Nesselwang, D..

About this document Waterpilot FMX21
8 Endress+Hauser
1.5 Terms and abbreviations
URL OPLMWP
LRL
0
p
LRV URV
1
2
3
4
A0029505
•OPL (1)
The OPL (Over Pressure Limit) for the measuring device depends on the lowest-rated
element, with regard to pressure, of the selected components i.e. the process connection
has to be taken into consideration in addition to the measuring cell. Also observe
pressure-temperature dependency.
The OPL may only be applied for a limited period of time.
•MWP (2)
The MWP (Maximum Working Pressure) for the sensors depends on the lowest-rated
element, with regard to pressure, of the selected components, i.e. the process connection
has to be taken into consideration in addition to the measuring cell. Also observe
pressure-temperature dependency.
The MWP may be applied at the device for an unlimited period.
The MWP can also be found on the nameplate.
•Maximum sensor measuring range (3)
Span between LRL and URL. This sensor measuring range is equivalent to the maximum
calibratable/adjustable span.
•Calibrated/adjusted span (4)
Span between LRV and URV. Factory setting: 0 to URL
Other calibrated spans can be ordered as customized spans.
•p: Pressure
•LRL: Lower range limit
•URL: Upper range limit
•LRV: Lower range value
•URV: Upper range value
•TD (Turn down): Example - see the following section
•PE: Polyethylene
•FEP: Fluorinated ethylene propylene
•PUR: Polyurethane

Waterpilot FMX21 About this document
Endress+Hauser 9
1.6 Turn down calculation
LRV URLURV LRL
1 = 2 3
A0029545
1 Calibrated/adjusted span
2 Zero point-based span
3 URL sensor
Example
• Sensor:10 bar (150 psi)
• Upper range value (URL) = 10 bar (150 psi)
Turn down (TD):
• Calibrated/adjusted span: 0 to 5 bar (0 to 75 psi)
• Lower range value (LRV) = 0 bar (0 psi)
• Upper range value (URV) = 5 bar (75 psi)
TD = URL
|URV - LRV|
TD = 10 bar (150 psi) = 2
|5 bar (75 psi) - 0 bar (0 psi)|
In this example, the TD is 2:1.
This span is based on the zero point.

Basic safety instructions Waterpilot FMX21
10 Endress+Hauser
2 Basic safety instructions
2.1 Requirements for personnel
The personnel for installation, commissioning, diagnostics and maintenance must fulfill
the following requirements:
‣Trained, qualified specialists must have a relevant qualification for this specific function
and task.
‣Personnel must be authorized by the plant owner/operator.
‣Be familiar with federal/national regulations.
‣Before starting work: personnel must read and understand the instructions in the
manual and supplementary documentation as well as the certificates (depending on
the application).
‣Personnel must follow instructions and comply with general policies.
The operating personnel must fulfill the following requirements:
‣Personnel are instructed and authorized according to the requirements of the task by
the facility's owner-operator.
‣Personnel follow the instructions in this manual.
2.2 Intended use
2.2.1 Application and media
The Waterpilot FMX21 is a hydrostatic pressure sensor for measuring the level of fresh
water, wastewater and salt water. The temperature is measured simultaneously in the case
of sensor versions with a Pt100 resistance thermometer.
An optional temperature head transmitter converts the Pt100 signal to a 4 to 20 mA
signal with superimposed digital communication protocol HART 6.0.
2.2.2 Incorrect use
The manufacturer is not liable for damage caused by improper or non-intended use.
Verification for borderline cases:
‣For special fluids and fluids for cleaning, Endress+Hauser is glad to provide assistance
in verifying the corrosion resistance of fluid-wetted materials, but does not accept any
warranty or liability.
2.3 Workplace safety
For work on and with the device:
‣Wear the required personal protective equipment according to federal/national
regulations.
‣Switch off the supply voltage before connecting the device.
2.4 Operational safety
Risk of injury!
‣Operate the device in proper technical condition and fail-safe condition only.
‣The operator is responsible for interference-free operation of the device.

Waterpilot FMX21 Basic safety instructions
Endress+Hauser 11
Modifications to the device
Unauthorized modifications to the device are not permitted and can lead to unforeseeable
dangers.
‣If, despite this, modifications are required, consult with Endress+Hauser.
Repairs
To ensure continued operational safety and reliability,
‣Carry out repairs on the device only if they are expressly permitted.
‣Observe federal/national regulations pertaining to repair of an electrical device.
‣Use original spare parts and accessories from Endress+Hauser only.
Hazardous area
To eliminate danger to persons or the facility when the device is used in the approval-
related area (e.g. explosion protection, pressure vessel safety):
‣Check the nameplate to verify if the device ordered can be put to its intended use in the
approval-related area.
‣Observe the specifications in the separate supplementary documentation that is an
integral part of these Instructions.
2.5 Product safety
This measuring device is designed in accordance with good engineering practice to meet
state-of-the-art safety requirements, has been tested, and left the factory in a condition in
which it is safe to operate.
It meets general safety standards and legal requirements. It also complies with the EC
directives listed in the device-specific EC Declaration of Conformity. Endress+Hauser
confirms this by affixing the CE mark to the device.

Product description Waterpilot FMX21
12 Endress+Hauser
3 Product description
3.1 Function
The ceramic measuring cell is a dry measuring cell i.e. the pressure acts directly on the
robust, ceramic process isolating diaphragm of the Waterpilot FMX21. Changes in air
pressure are guided via a pressure compensation tube through the extension cable to the
rear of the ceramic process isolating diaphragm and are compensated for. A pressure-
dependent change in capacitance, caused by the movement of the process isolating
diaphragm, is measured at the electrodes of the ceramic carrier. The electronics unit then
converts this to a signal that is proportional to the pressure and linear to the level.
h
2
1
patm
phydr.
p = p + p
atm hydr.
patm
patm
h ~ p
r•g
h = p
Rel.: p = (p + p ) - p
sens atm hydr. atm
p = p + p
atm hydr.
Abs.: p = (p + p )
sens atm hydr.
A0019140
1 Ceramic measuring cell
2 Pressure compensation tube
h Height level
p Total pressure = atmospheric pressure + hydrostatic pressure
ρ Density of the medium
g Acceleration due to gravity
Phydr. Hydrostatic pressure
Patm Atmospheric pressure
Psens Pressure displayed on the sensor

Waterpilot FMX21 Incoming acceptance and product identification
Endress+Hauser 13
4 Incoming acceptance and product
identification
4.1 Incoming acceptance
Check the following during incoming acceptance:
 Are the order codes on the delivery note and the product sticker identical?
 Are the goods undamaged?
 Do the data on the nameplate match the ordering information on the delivery note?
 If required (see nameplate): are the Safety Instructions e.g. XA provided?
If one of these conditions is not met, please contact the manufacturer's sales office.
4.2 Product identification
The following options are available for identification of the device:
• Nameplate specifications
• Extended order code with breakdown of the device features on the delivery note
• Enter serial number of nameplates in W@M Device Viewer
www.endress.com/deviceviewer. All of the information on the measuring device is
displayed along with an overview of the scope of technical documentation provided.
• Enter the serial number on the nameplate into the Endress+Hauser Operations app or
scan the 2-D matrix code on the nameplate with the Endress+Hauser Operations app
4.2.1 Manufacturer address
Endress+Hauser SE+Co. KG
Hauptstraße 1
79689 Maulburg, Germany
Address of the manufacturing plant: See nameplate.

Incoming acceptance and product identification Waterpilot FMX21
14 Endress+Hauser
4.3 Nameplates
4.3.1 Nameplates on extension cable
Dat./Insp.:
FW.Ver.:
Dev.Rev.:
Cal./Adj.
Mat: L=
Ser. no.:
Order code:
Ext. order code:
TAG:
Waterpilot FMX21
Made in Germany, D-79689 Maulburg
p
12
17
16
15
14
3 4
5
6/7
89
101112
13
A0018802
1 Order code (shortened for reordering); The meaning of the individual letters and digits is explained in the
order confirmation details.
2 Extended order number (complete)
3 Serial number (for clear identification)
4 TAG (device tag)
5 FMX21 connection diagram
6 Pt100 connection diagram (optional)
7 Warning (hazardous area), (optional)
8 Length of extension cable
9 Approval symbol, e.g. CSA, FM, ATEX (optional)
10 Text for approval (optional)
11 Materials in contact with process
12 Test date (optional)
13 Software version/device version
14 Supply voltage
15 Output signal
16 Set measuring range
17 Nominal measuring range
Additional nameplate for devices with approvals
Mat.: 316L/1.4435/1.4404, Al O , PE, EPDM, PPO
2 3 For use in drinking water according to:
Made in Germany, D-79689 Maulburg
Waterpilot FMX21
250002737-B
1
23
A0018805
1 Approval symbol (drinking water approval)
2 Reference to associated documentation
3 Approval number (marine approval)

Waterpilot FMX21 Incoming acceptance and product identification
Endress+Hauser 15
4.3.2 Additional nameplate for devices with external diameter
22 mm (0.87 in) and 42 mm (1.65 in)
x
Install per dwg. 96000xxxx-
Ser.-No.:
p
Waterpilot FMX21
Cal./Adj.
1 2 3 4 5 6 7
A0018804
1 Serial number
2 Nominal measuring range
3 Set measuring range
4 CE mark or approval symbol
5 Certificate number (optional)
6 Text for approval (optional)
7 Reference to documentation
4.4 Identification of sensor type
With gauge pressure or absolute pressure sensors, the "Pos. zero adjust" parameter is
displayed in the operating menu. With absolute pressure sensors, the "Calib. offset"
parameter is displayed in the operating menu.
4.5 Storage and transport
4.5.1 Storage conditions
Use original packaging.
Store the measuring device in clean and dry conditions and protect from damage caused by
shocks (EN 837-2).
Storage temperature range
Device + Pt100 (optional)
–40 to +80 °C (–40 to +176 °F)
Cable
(when mounted in a fixed position)
• With PE: –30 to +70 °C (–22 to +158 °F)
• With FEP: –30 to +80 °C (–22 to +176 °F)
• With PUR: –40 to +80 °C (–40 to +176 °F)
Terminal box
–40 to +80 °C (–40 to +176 °F)
TMT72 temperature head transmitter (optional)
–40 to +100 °C (–40 to +212 °F)

Incoming acceptance and product identification Waterpilot FMX21
16 Endress+Hauser
4.5.2 Transporting the product to the measuring point
LWARNING
Incorrect transport!
Device or cable may become damaged, and there is a risk of injury!
‣Transport measuring device in the original packaging.
‣Follow the safety instructions and transport conditions for devices weighing more than
18 kg (39.6 lbs).

Waterpilot FMX21 Mounting
Endress+Hauser 17
5 Mounting
5.1 Mounting requirements
1
2
3
4
5
6
7
8
9
Dat./Insp.:
FW.Ver.:xxxx
Dev.Rev.:xxxx
Cal./Adj.
Mat: L=
Ser.no.: xxxxxxxxxxxxx
Ordercode: xxxxxxxxxxxxxxxxxxxxxx
Ext.order code: xxxxxxxxxxxxxxxxxxxxxx
TAG:xxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxx
Waterpilot FMX21
Madein Germany, D-79689 Maulburg
p
Exia IIC T6-T4
£
-10°C Ta 70°C
£Ta 40°Cfor T6
£
Ta 70°Cfor T4
£
Ui 30VDC; Ii 133mA; Pi 1W
£££
II2G
Ci=5nF + 180pF/m ; Li= 1 µH/m
Warning!
Avoid electrostatic
charge
0...400mbar
4...20 mA
0...600mbar red +
black -
yellow-green
4…20mA
Sensor
250002736--
10,5...35VDC
XAxxxxxP-
XX/XXXX
TÜV01 ATEX 1685
PPS/Polyolefin AL2O3 FEP EPDM
OPEN
CLOSE
90°
90°
Warning:
Avoid electrostatic charge in explosive atmosphere.
See instructions
TerminalBox for FMX21
A0018770
1 Cable mounting screw (can be ordered as an accessory)
2 Terminal box (can be ordered as an accessory)
3 Bending radius of extension cable 120 mm (4.72 in)
4 Suspension clamp (can be ordered as an accessory)
5 Extension cable
6 Guide tube
7 Device
8 Additional weight can be ordered as an accessory for the device with external diameter of 22 mm (0.87 in)
and 29 mm (1.14 in)
9 Protective cap

Mounting Waterpilot FMX21
18 Endress+Hauser
5.2 Additional mounting instructions
• Cable length
• Customer-specific in meters or feet.
• Limited cable length when performing installation with freely suspended device with
cable mounting screw or mounting clamp, as well as for FM/CSA approval: max.
300 m (984 ft).
• Sideways movement of the level probe can result in measuring errors. For this reason,
install the probe at a point free from flow and turbulence, or use a guide tube. The
internal diameter of the guide tube should be at least 1 mm (0.04 in) greater than the
external diameter of the selected FMX21.
• To avoid mechanical damage to the measuring cell, the device is equipped with a
protection cap.
• The cable must end in a dry room or a suitable terminal box. The terminal box from
Endress+Hauser provides humidity and climatic protection and is suitable for installation
outdoors →  126.
• Cable length tolerance: < 5 m (16 ft): ±17.5 mm (0.69 in); > 5 m (16 ft): ±0.2 %
• If the cable is shortened, the filter at the pressure compensation tube must be
reattached. Endress+Hauser offers a cable shortening kit for this purpose →  126
(documentation SD00552P/00/A6).
• Endress+Hauser recommends using twisted, shielded cable.
• In shipbuilding applications, measures are required to restrict the spread of fire along
cable looms.
• The length of the extension cable depends on the intended level zero point. The height
of the protection cap must be taken into consideration when designing the layout of the
measuring point. The level zero point (E) corresponds to the position of the process
isolating diaphragm. Level zero point = E; tip of probe = L (see the following diagram).
L
E
A0026013
5.3 Dimensions
For dimensions, see the Technical Information

Waterpilot FMX21 Mounting
Endress+Hauser 19
5.4 Mounting the Waterpilot with a suspension clamp
1
2
3
A0018793
1 Extension cable
2 Suspension clamp
3 Clamping jaws
5.4.1 Mounting the suspension clamp:
1. Mount the suspension clamp (item 2). Take the weight of the extension cable (item
1) and the device into account when selecting the fastening point.
2. Push up the clamping jaws (item 3). Place the extension cable (item 1) between the
clamping jaws as shown in the graphic.
3. Hold the extension cable (item 1) in position and push the clamping jaws (item 3)
back down. Tap the clamping jaws gently from above to fix them in place.

Mounting Waterpilot FMX21
20 Endress+Hauser
5.5 Mounting the device with a cable mounting screw
+40
( +1.57)
1
6
8
7
2
3
4
5
36
41
A0018794
 1 Illustrated with G 1½" thread. Unit of measurement mm (in)
1 Extension cable
2 Cover for cable mounting screw
3 Sealing ring
4 Clamping sleeves
5 Adapter for cable mounting screw
6 Top edge of clamping sleeve
7 Desired length of extension cable and Waterpilot probe prior to assembly
8 After assembly, item 7 is located next to the mounting screw with G 1½" thread: height of sealing surface of
the adapter or NPT 1½" thread height of thread run-out of adapter
If you want to lower the level probe to a certain depth, position the top edge of the
clamping sleeve 40 mm (4.57 in) higher than the required depth. Then push the
extension cable and the clamping sleeve into the adapter as described in Step 6 in the
following section.
5.5.1 Mounting the cable mounting screw with a G 1½" or NPT 1½"
thread:
1. Mark the desired length of extension cable on the extension cable.
2. Insert the probe through the measuring aperture and carefully lower on the
extension cable. Fix the extension cable to prevent it from slipping.
3. Slide the adapter (item 5) over the extension cable and screw it tightly into the
measuring aperture.
4. Slide the sealing ring (item 3) and cover (item 2) onto the cable from above. Press
the sealing ring into the cover.
5. Place the clamping sleeves (item 4) around the extension cable (item 1) at the
marked point as illustrated in the graphic.
6. Slide the extension cable with the clamping sleeves (item 4) into the adapter (item 5)
7. Fit the cover (item 2) with the sealing ring (item 3) onto the adapter (item 5) and
securely screw together with the adapter.
To remove the cable mounting screw, perform this sequence of steps in reverse.
LCAUTION
Risk of injury!
‣Use only in unpressurized vessels.