Endress+Hauser Waterpilot FMX21 User manual

Products Solutions Services
Brief Operating Instructions
Waterpilot FMX21
Hydrostatic level measurement
4 to 20 mA Analog
These Instructions are Brief Operating Instructions; they are
not a substitute for the Operating Instructions pertaining to
the device.
Detailed information about the device can be found in the
Operating Instructions and the other documentation:
Available for all device versions via:
– Internet: www.endress.com/deviceviewer
– Smart phone/tablet: Endress+Hauser Operations App
KA01244P/00/EN/01.16
71323919

Waterpilot FMX21
2 Endress+Hauser
1.
Order code:
Ext. ord. cd.:
Ser. no.:
www.endress.com/deviceviewer Endress+Hauser Operations App
XXXXXXXXXXXX
XXXXX-XXXXXX
XXX.XXXX.XX
Serial number
2.
3.
A0023555

Waterpilot FMX21 Table of contents
Endress+Hauser 3
Table of contents
1 Document information ........................................................... 4
1.1 Document function .................................................................... 4
1.2 Symbols used ........................................................................ 4
1.3 Documentation ....................................................................... 5
1.4 Terms and abbreviations ................................................................ 7
1.5 Turn down calculation .................................................................. 8
2 Basic safety instructions ......................................................... 9
2.1 Requirements concerning the staff ......................................................... 9
2.2 Designated use ....................................................................... 9
2.3 Workplace safety ...................................................................... 9
2.4 Operational safety ..................................................................... 9
2.5 Product safety ....................................................................... 10
3 Product description ............................................................. 10
4 Incoming acceptance and product identification ................................. 10
4.1 Incoming acceptance .................................................................. 10
4.2 Product identification ................................................................. 12
4.3 Nameplates ......................................................................... 13
4.4 Storage and transport ................................................................. 14
4.5 Scope of delivery ..................................................................... 15
5 Installation ..................................................................... 16
5.1 Installation conditions ................................................................. 16
5.2 Additional mounting instructions ......................................................... 17
5.3 Dimensions ......................................................................... 17
5.4 Mounting the Waterpilot with a mounting clamp ............................................. 18
5.5 Mounting the Waterpilot with a cable mounting screw ......................................... 19
5.6 Mounting the terminal box ............................................................. 20
5.7 Mounting the TMT181 temperature head transmitter with terminal box ............................ 20
5.8 Cable marking ....................................................................... 22
5.9 Cable shortening kit .................................................................. 22
5.10 Post-installation check ................................................................. 23
6 Electrical connection ............................................................ 24
6.1 Connecting the device ................................................................. 24
6.2 Supply voltage ....................................................................... 27
6.3 Cable specifications ................................................................... 27
6.4 Power consumption ................................................................... 27
6.5 Current consumption .................................................................. 28
6.6 Maximum load for FMX21 4 to 20 mA Analog ............................................... 28
6.7 Connecting the measuring unit .......................................................... 28
6.8 Post-connection check ................................................................. 30
7 Operation options .............................................................. 30
7.1 Overview of operating options ........................................................... 30

Document information Waterpilot FMX21
4 Endress+Hauser
1 Document information
1.1 Document function
The Brief Operating Instructions contain all the essential information from incoming
acceptance to initial commissioning.
1.2 Symbols used
1.2.1 Safety symbols
Symbol Meaning
DANGER
DANGER!
This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in
serious or fatal injury.
WARNING
WARNING!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
serious or fatal injury.
CAUTION
CAUTION!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
minor or medium injury.
NOTICE
NOTE!
This symbol contains information on procedures and other facts which do not result in personal
injury.
1.2.2 Electrical symbols
Symbol Meaning Symbol Meaning
Direct current Alternating current
Direct current and alternating current Ground connection
A grounded terminal which, as far as
the operator is concerned, is grounded
via a grounding system.
Protective ground connection
A terminal which must be connected to
ground prior to establishing any other
connections.
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.

Waterpilot FMX21 Document information
Endress+Hauser 5
1.2.3 Tool symbols
Symbol Meaning
A0011220
Flat blade screwdriver
A0011219
Phillips screwdriver
A0011221
Allen key
A0011222
Open-ended wrench
1.2.4 Symbols for certain types of information
Symbol Meaning Symbol Meaning
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 Reference to page
Reference to graphic
,… ,
Series of steps
Result of a step Visual inspection
1.2.5 Symbols in graphics
Symbol Meaning
1, 2, 3 ... Item numbers
,… ,
Series of steps
A, B, C, ... Views
A-A, B-B, C-C, ... Sections
1.3 Documentation
The document types listed are available:
In the Downloads area of the Endress+Hauser website: www.endress.com → Downloads

Document information Waterpilot FMX21
6 Endress+Hauser
1.3.1 Technical Information (TI): planning aid for your device
TI00431P:
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.
1.3.2 Operating Instructions (BA): your comprehensive reference
FMX21 4 to 20 mA Analog - BA01605P:
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.
1.3.3 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.
Directive Type of protection Category Documentation Option 1)
ATEX Ex ia IIC II 2 G XA00454P BD
ATEX Ex nA IIC II 3 G XA00485P BE
IECEx Ex ia IIC n/a XA00455P IC
CSA C/US Ex ia IIC n/a ZD00232P
(960008976)
CE
FM AEx ia IIC n/a ZD00231P
(960008975)
FE
NEPSI Ex ia IIC n/a XA00456P NA
INMETRO Ex ia IIC n/a XA01066P MA
1) Product Configurator order code for "Approval"
The nameplate indicates the Safety Instructions (XA) that are relevant to the device.

Waterpilot FMX21 Document information
Endress+Hauser 7
1.4 Terms and abbreviations
URL OPLMWP
LRL
0
p
LRV URV
1
2
3
4
A0029505
Item Term/abbreviation Explanation
1 OPL The OPL (over pressure limit = sensor overload 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. For the relevant standards and
additional notes, see the "Pressure specifications" section of the Operating Instructions.
The OPL may only be applied for a limited period of time.
2 MWP 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. For the relevant standards and additional notes, see
the "Pressure specifications" section of the Operating Instructions.
The MWP may be applied at the device for an unlimited period.
The MWP can also be found on the nameplate.
3 Maximum sensor
measuring range
Span between LRL and URL
This sensor measuring range is equivalent to the maximum calibratable/adjustable span.

Document information Waterpilot FMX21
8 Endress+Hauser
Item Term/abbreviation Explanation
4 Calibrated/adjusted
span
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) Turn down
Example - see the following section.
- PE Polyethylene
- FEP Fluorinated ethylene propylene
- PUR Polyurethane
1.5 Turn down calculation
LRV URLURV LRL
1 = 2 3
A0029545
1 Calibrated/adjusted span
2 Zero point-based span (4 to 20 mA Analog: customer-specific span can only be set at the factory when
ordered)
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.

Waterpilot FMX21 Basic safety instructions
Endress+Hauser 9
2 Basic safety instructions
2.1 Requirements concerning the staff
The staff must fulfill the following requirements for their tasks:
‣Trained staff: Must have a qualification which corresponds to their function and tasks.
‣Authorized by the plant operator.
‣Familiar with the national regulations.
‣Before starting their work: Must have read and understood all instructions in the operating
manual and supplementary documentation as well as the certificate (depending on the
application).
‣Must comply with all instructions and the regulatory framework.
2.2 Designated 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 into a 4 to 20 mA signal.
2.2.2 Incorrect use
The manufacturer is not liable for damage caused by improper or non-designated 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.
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.

Product description Waterpilot FMX21
10 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.
3 Product description
4 Incoming acceptance and product identification
4.1 Incoming acceptance
A0015502
DELIVERY NOTE
1 = 2
A0016870
Is the order code on the delivery note (1) identical to the order code on the
product sticker (2)?

Waterpilot FMX21 Incoming acceptance and product identification
Endress+Hauser 11
A0026535
A0015502
A0026536
Are the goods undamaged?
A0015502
Dat./Insp.:
FW.Ver.:
Dev.Rev.:
Cal./Adj.
Mat: L=
Ser.no.:
Ordercode:
Ext.order code:
TAG:
WaterpilotFMX21
MadeinGermany, D-79689 Maulburg
p
DELIVERY NOTE
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
A0026537
Do the data on the nameplate correspond to the order specifications and
the delivery note?
A0015502
A0022106
Is the documentation available?
If required (see nameplate): Are the safety instructions (XA) present?

Incoming acceptance and product identification Waterpilot FMX21
12 Endress+Hauser
If one of these conditions does not apply, please contact your
Endress+Hauser sales office.
4.2 Product identification
The following options are available for identification of the measuring device:
• Nameplate specifications
• Order code with breakdown of the device features on the delivery note
• Enter serial numbers from nameplates in W@M Device Viewer
(www.endress.com/deviceviewer): All information about the measuring device is displayed.
For an overview of the technical documentation provided, enter the serial number from the
nameplates in the W@M Device Viewer (www.endress.com/deviceviewer)

Waterpilot FMX21 Incoming acceptance and product identification
Endress+Hauser 13
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

Incoming acceptance and product identification Waterpilot FMX21
14 Endress+Hauser
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)
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 Storage and transport
4.4.1 Storage conditions
Use original packaging.
Store the measuring device in clean and dry conditions and protect from damage caused by
shocks (EN 837-2).

Waterpilot FMX21 Incoming acceptance and product identification
Endress+Hauser 15
Storage temperature range
FMX21 + 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)
TMT181 temperature head transmitter (optional) for FMX21 4 to 20 mA Analog
–40 to +100 °C (–40 to +212 °F)
4.4.2 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).
4.5 Scope of delivery
The scope of delivery comprises:
• Waterpilot FMX21, optionally with integrated Pt100 resistance thermometer
• Optional accessories
Documentation supplied:
• The Operating Instructions BA01605P are available on the internet. → see:
www.de.endress.com → Downloads.
• Brief Operating Instructions KA01244P
• Final inspection report
• Drinking water approvals (optional): SD00289P, SD00319P, SD00320P
• Devices that are suitable for use in hazardous areas: Additional documentation e.g. Safety
instructions (XA, ZD)

Installation Waterpilot FMX21
16 Endress+Hauser
5 Installation
5.1 Installation conditions
1
2
3
4
5
6
7
8
9
Dat./Insp.:
FW.Ver.:xxxx
Dev.Rev.:xxxx
Cal./Adj.
Mat: L=
Ser.no.: xxxxxxxxxxxxx
Order code: xxxxxxxxxxxxxxxxxxxxxx
Ext. order code: xxxxxxxxxxxxxxxxxxxxxx
TAG:xxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxx
Waterpilot FMX21
Madein Germany, D-79689 Maulburg
p
Ex ia IIC T6-T4
£
-10°C Ta 70°C
£Ta 40°C for T6
£
Ta 70°C for T4
£
Ui 30VDC ; Ii 133mA ; Pi 1W
£££
II 2G
Ci= 5nF + 180pF/m ; Li= 1 µH/m
Warning!
Avoid electrostatic
charge
0...400mbar
4... 20 mA
0...600mbar red +
black -
yellow-green
4…20 mA
Sensor
250002736--
10,5... 35VDC
XAxxxxxP-
XX/XXXX
TÜV 01ATEX 1685
PPS/Polyolefin AL2O3 FEP EPDM
OPEN
CLOSE
90°
90°
Warning:
Avoid electrostatic charge in explosive atmosphere.
See instructions
Terminal Box 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 Mounting clamp (can be ordered as an accessory)
5 Extension cable
6 Guide tube

Waterpilot FMX21 Installation
Endress+Hauser 17
7 Waterpilot FMX21
8 Additional weight can be ordered as an accessory for the FMX21 with external diameter of
22 mm (0.87 in) and 29 mm (1.14 in)
9 Protection cap
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 .
• 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 (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, please refer to the Technical Information TI00431P/00/EN, "Mechanical
construction" section (see also: www.de.endress.com → Downloads → Media Type:
Documentation).

Installation Waterpilot FMX21
18 Endress+Hauser
5.4 Mounting the Waterpilot with a mounting 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.

Waterpilot FMX21 Installation
Endress+Hauser 19
5.5 Mounting the Waterpilot with a cable mounting screw
+40
( +1.57)
1
6
8
7
2
3
4
5
36
41
A0018794
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
Engineering unit mm (in). Illustrated with G 1½" thread.
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.

Installation Waterpilot FMX21
20 Endress+Hauser
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.
5.6 Mounting the terminal box
The optional terminal box is mounted using four screws (M4). For the dimensions of the
terminal box, please see the Technical Information TI00431P/00/ EN, "Mechanical
construction" section (see also: www.de.endress.com → Downloads → Media Type:
Documentation).
5.7 Mounting the TMT181 temperature head transmitter with ter-
minal box
1
3
2
6
5
4
3
CLOSE
90°
OPEN
90°
Warning:
Avoid electrostatic charge in explosive atmosphere.
See instructions
Terminal Box for FMX21
1
2
3
45
A0018813
1 Mounting screws
2 Mounting springs
3 TMT181 temperature head transmitter
4 Circlips
5 Terminal box
Only open the terminal box with a screwdriver.