Endress+Hauser Waterpilot FMX21 Operating Instructions Manual

BA00380P/00/EN/15.15
71293257

Valid as of version

01.00.zz

Products Solutions Services

Operating Instructions

Waterpilot FMX21

Hydrostatic level measurement
HART

Waterpilot FMX21

TAG No.: XXX000

Ser. No.: X000X000000

Order code 00X00-XXXX0XX0XXX

www.endress.com/deviceviewer Endress+Hauser Operations App

Serial number

• 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
these Instructions.

A0023555

2 Endress+Hauser

Waterpilot FMX21 Table of contents

Table of contents

1 Document information .............. 5

1.1 Document function ..................... 5

1.2 Symbols used .......................... 5

1.3 Documentation ........................ 6

1.4 Terms and abbreviations ................. 7

2 Basic safety instructions ............ 8

2.1 Requirements concerning the staff .......... 8

2.2 Designated use ........................ 8

2.3 Workplace safety ....................... 8

2.4 Operational safety ...................... 8

2.5 Product safety ......................... 9

3 Product description ................ 10

3.1 Function ............................ 10

4 Incoming acceptance and product

identification ..................... 11

4.1 Incoming acceptance ................... 11

4.2 Product identification ................... 12

4.3 Nameplates .......................... 13

4.4 Identification of sensor type .............. 14

4.5 Storage and transport .................. 14

4.6 Scope of delivery ...................... 14

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 TMT182 temperature head

transmitter with terminal box ............ 20

5.8 Mounting the terminal strip for the Pt100

passive (without TMT182) ............... 21

5.9 Post-installation check .................. 21

7 Operation options ................. 32

7.1 Overview of operating options ............ 32

7.2 Operating concept ..................... 33

7.3 Structure of the operating menu ........... 33

7.4 Locking/unlocking operation ............. 34

7.5 Resetting to factory settings (reset) ........ 35

8

Integrating device via HART

®

protocol .......................... 36

8.1 HART process variables and measured

values .............................. 36

8.2 Device variables and measured values ....... 37

9 Commissioning .................... 38

9.1 Post-installation check and function check ... 38

9.2 Unlocking/locking configuration .......... 38

9.3 Commissioning ....................... 38

9.4 Selecting the language .................. 39

9.5 Measuring mode selection ............... 39

9.6 For selecting the pressure engineering unit ... 40

9.7 Position adjustment .................... 40

9.8 Configuring the damping ................ 41

9.9 Configuring pressure measurement ........ 41

9.10 Configuring level measurement ........... 43

9.11 Automatic density compensation .......... 56

9.12 Linearization ......................... 59

9.13 Manual entry of a linearization table via

operating tool ........................ 62

9.14 Backing up or duplicating the device data .... 63

10 Diagnostics and troubleshooting ... 64

10.1 Troubleshooting ...................... 64

10.2 Diagnostic events ...................... 64

10.3 Troubleshooting specific to Waterpilot

FMX21 with optional Pt100 .............. 67

10.4 Troubleshooting specific to TMT182

temperature head transmitter ............ 68

10.5 Response of output to errors .............. 68

10.6 Firmware history ...................... 69

6 Electrical connection .............. 23

6.1 Connecting the device .................. 23

6.2 Supply voltage ........................ 25

6.3 Cable specifications .................... 25

6.4 Power consumption .................... 25

6.5 Current consumption ................... 26

6.6 Maximum load ....................... 26

6.7 Connecting the measuring unit ........... 27

6.8 Post-connection check .................. 31

Endress+Hauser 3

11 Maintenance ...................... 70

11.1 Exterior cleaning ...................... 70

12 Repairs ........................... 71

12.1 General notes ........................ 71

12.2 Spare parts .......................... 71

12.3 Return .............................. 71

12.4 Disposal ............................ 71

Table of contents Waterpilot FMX21

13 Overview of the operating menu .... 72

13.1 Overview of parameters in the "Expert"

menu .............................. 75

14 Description of device parameters ... 80

14.1 Expert → System ...................... 80

14.2 Expert → System → Instrument info ........ 81

14.3 Expert → System → Management .......... 83

14.4 Expert → Measurement → Measuring mode .. 83

14.5 Expert → Measurement → Basic setup ....... 84

14.6 Expert → Measurement → Pressure ........ 86

14.7 Expert → Measurement → Level ........... 88

14.8 Expert → Measurement → Linearization ..... 93

14.9 Expert → Measurement → Sensor limits ..... 96

14.10 Expert → Measurement → Sensor trim ...... 97

14.11 Expert → Output → Current output ......... 98

14.12 Expert→ Communication → HART config. ... 102

14.13 Expert→ Communication → HART info ..... 104

14.14 Expert→ Communication → HART output ... 106

14.15 Expert→ Communication → HART input .... 109

14.16 Expert → Application .................. 111

14.17 Expert → Diagnosis ................... 112

14.18 Expert → Diagnosis → Diagnostic list ....... 114

14.19 Expert → Diagnosis→ Event logbook ....... 115

14.20 Expert → Diagnosis → Simulation ......... 116

15 Accessories ...................... 118

15.1 Suspension clamp .................... 118

15.2 Terminal box ........................ 118

15.3 Additional weight .................... 118

15.4 Temperature head transmitter TMT182 (4 to

20 mA HART) ....................... 119

15.5 Pt-100 resistance thermometer .......... 119

15.6 Cable mounting screws ................ 119

15.7 Terminals .......................... 119

15.8 Cable shortening kit ................... 119

15.9 Cable marking ....................... 119

15.10 Testing adapter ...................... 120

16 Technical data ................... 122

16.1 Input .............................. 122

16.2 Output ............................ 124

16.3 Performance characteristics ............. 127

16.4 Environment ........................ 129

16.5 Process ............................ 131

16.6 Additional technical data ............... 131

Index ................................. 132

4 Endress+Hauser

Waterpilot FMX21 Document information

DANGER

WARNING

CAUTION

NOTICE

1 Document information

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 used

1.2.1 Safety symbols

Symbol Meaning

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.

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

Protective ground connection

A terminal which must be connected
to ground prior to establishing any
other connections.

1.2.3 Tool symbols

Symbol Meaning

Flat blade screwdriver

A0011220

Philips screwdriver

A grounded terminal which, as far as
the operator is concerned, is
grounded via a grounding system.

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.

A0011219

Endress+Hauser 5

Document information Waterpilot FMX21

,…,

,…,

Symbol Meaning

Allen key

A0011221

Open-ended wrench

A0011222

1.2.4 Symbols for certain types of information

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

Help in the event of a problem

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

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.

6 Endress+Hauser

Waterpilot FMX21 Document information

1.3.2 Brief Operating Instructions (KA): getting the 1st measured value quickly

KA01189P:

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.

Directive Type of protection Category Documentation Option

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)

FM AEx ia IIC n/a ZD00231P

(960008975)

NEPSI Ex ia IIC n/a XA00456P NA

INMETRO Ex ia IIC n/a XA01066P MA

1) Product Configurator order code for "Approval"

CE

FE

The nameplate indicates the Safety Instructions (XA) that are relevant to the device.

1.4 Terms and abbreviations

Term/abbreviation Explanation

XA Document type "Safety Instructions"

KA Document type "Brief Operating Instructions"

BA Document type "Operating Instructions"

SD Document type "Special Documentation"

1)

TD Turn down

Set span and zero-based span.

Endress+Hauser 7

Basic safety instructions Waterpilot FMX21

2 Basic safety instructions

2.1 Requirements concerning the staff

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
Are authorized by the plant owner/operator

‣

Are familiar with federal/national regulations

‣

Before beginning work, the specialist staff must have read and understood the

‣

instructions in the Operating Instructions and supplementary documentation as well as
in the certificates (depending on the application)
Following instructions and basic conditions

‣

The operating personnel must fulfill the following requirements:

Being instructed and authorized according to the requirements of the task by the

‣

facility's owner-operator
Following the instructions in these Operating Instructions

‣

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 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-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.

‣

8 Endress+Hauser

Waterpilot FMX21 Basic safety instructions

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 approval­related 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.

Endress+Hauser 9

Product description Waterpilot FMX21

h

2

1

p

atm

p

hydr.

p = p + p

atm hydr.

p

atm

p

atm

h ~ p

r • g

h =

p

Rel.: p =

sens

(p + p ) - p

atm hydr. atm

p = p + p

atm hydr.

Abs.: p =

sens

(p + p )

atm hydr.

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. Potential 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 pressure­dependent 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.

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
P

Hydrostatic pressure

hydr.

P

Atmospheric pressure

atm

P

Pressure displayed on the sensor

sens

A0019140

10 Endress+Hauser

Waterpilot FMX21 Incoming acceptance and product identification

DELIVERY NOTE

1 = 2

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

DELIVERYNOTE

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

4 Incoming acceptance and product

identification

4.1 Incoming acceptance

A0015502

A0016870

Is the order code on the delivery note (1) identical to the order code on
the product sticker (2)?

A0015502

A0015502

A0026535

A0026536

Are the goods undamaged?

A0026537

Do the data on the nameplate correspond to the order specifications and
the delivery note?

Endress+Hauser 11

Incoming acceptance and product identification Waterpilot FMX21

A0015502

A0022106

Is the documentation available?
If required (see nameplate): Are the safety instructions (XA) present?

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)

12 Endress+Hauser

Waterpilot FMX21 Incoming acceptance and product identification

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

1

2

17
16
15
14

3 4

5

6/7

89

101112

13

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

4.3 Nameplates

4.3.1 Nameplates on extension cable

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

1 Approval symbol (drinking water approval)
2 Reference to associated documentation
3 Approval number (marine approval)

Endress+Hauser 13

A0018805

Incoming acceptance and product identification Waterpilot FMX21

x

Install per dwg. 96000xxxx-

Ser.-No.:

p

Waterpilot FMX21

Cal./Adj.

1 2 3 4 5 6 7

4.3.2 Additional nameplate for devices with external diameter 22 mm (0.87 in) and 42 mm (1.65 in)

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 relative 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

• FMX21: –40 to +80 °C (–40 to +176 °F)

• TMT182: –40 to +100 °C (–40 to +212 °F)

• Terminal box: –40 to +80 °C (–40 to +176 °F)

4.5.2 Transporting the product to the measuring point

WARNING

L

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).

4.6 Scope of delivery

The scope of delivery comprises:

• Waterpilot FMX21, optionally with integrated Pt100 resistance thermometer

• Optional accessories

14 Endress+Hauser

Waterpilot FMX21 Incoming acceptance and product identification

Documentation supplied:

• The Operating Instructions BA00380P are available on the internet. → see:
www.de.endress.com → Downloads.

• Brief Operating Instructions KA01189P

• 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)

Endress+Hauser 15

Installation Waterpilot FMX21

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

Made in Germany,D-79689 Maulburg

p

Ex ia IICT6-T4

£

-10°C Ta 70°C

£

Ta 40°C forT6

£

Ta 70°C forT4

£

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

FEPEPDM

OPEN

CLOSE

90°

90°

Warning:
Avoid electrostatic charge in explosive atmosphere.
See instructions

Terminal Box for FMX21

5 Installation

5.1 Installation conditions

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
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

16 Endress+Hauser

Waterpilot FMX21 Installation

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. m/ft.
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 optimum protection from the effects of humidity and weather
conditions and is suitable for outdoor installation→  118.

• 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).

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).

Endress+Hauser 17

Installation Waterpilot FMX21

1

2

3

5.4 Mounting the Waterpilot with a mounting clamp

1 Extension cable
2 Suspension clamp
3 Clamping jaws

5.4.1 Mounting the suspension clamp:

1. Installing the mounting clamp (item 2) . When selecting the place to attach the unit,
note the weight of the extension cable (item 1) and of the device.

2. Raise the clamping jaws (item 3). Hold the extension cable in position (item 1)
between the clamping jaws as illustrated in the diagram.

3. Hold the extension cable in position (item 1) and push the clamping jaws (item 3)
back down. Tap the clamping jaws gently from above to fix them in place.

A0018793

18 Endress+Hauser

Waterpilot FMX21 Installation

+40

( +1.57)

1

6

8

7

2

3

4

5

36

41

5.5 Mounting the Waterpilot with a cable mounting screw

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 Mount cable mounting screw with 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. Push the adapter (item 5) over the extension cable and screw it tightly into the
measuring aperture.

4. Push the sealing ring (item 3) and cover (item 2) onto the cable from above. Press
the sealing ring into the cover.

5. Place clamping sleeves (item 4) around the extension cable (item 1) at the marked
position as illustrated in the diagram.

6. Push the extension cable with the clamping sleeves (item 4) into the adapter (item 5)

7. Slide the cover (item 2) with sealing ring (item 3) onto the adapter (item 5) and
screw tightly to the adapter.

To remove the cable mounting screw, perform this sequence of steps in reverse.

CAUTION

L

Risk of injury!

Use only in unpressurized vessels.

‣

Endress+Hauser 19

Installation Waterpilot FMX21

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

4

5

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 TMT182 temperature head transmitter with terminal box

1 Mounting screws
2 Mounting springs
3 TMT182 temperature head transmitter
4 Circlips
5 Terminal box

Only open the terminal box with a screwdriver.

WARNING

L

Risk of explosion!

The TMT182 is not designed for use in hazardous areas.

‣

5.7.1 Mounting the temperature head transmitter:

1. Guide the mounting screws (item 1) with the mounting springs (item 2) through the
hole in the temperature head transmitter (item 3)

2. Secure the mounting screws with the circlips (item 4). Circlips, mounting screws and
springs are included in the scope of delivery for the temperature head transmitter.

3. Screw the temperature head transmitter into the field housing tightly. (width of
screwdriver blade max. 6 mm (0.24 in))

NOTICE

Avoid damage to the temperature head transmitter.

Do not overtighten the mounting screw too.

‣

A0018813

20 Endress+Hauser

Waterpilot FMX21 Installation

>7 (0.28)

A0018696

Engineering unit mm (in)

NOTICE

Incorrect connection!

A distance of >7 mm (> 0.28) must be maintained between the terminal strip and the

‣

TMT182 temperature head transmitter.

5.8 Mounting the terminal strip for the Pt100 passive (without TMT182)

If the FMX21 with optional Pt100 is supplied without the optional TMT182 temperature
head transmitter, a terminal strip is provided with the terminal box for the purpose of
wiring the Pt100.

WARNING

L

Risk of explosion!

The Pt100, as well as the terminal strip, are not designed for use in hazardous areas.

‣

A0018815

5.9 Post-installation check

Endress+Hauser 21

 Is the device undamaged (visual inspection)?

Does the device conform to the measuring point specifications?

For example:

• Process temperature



• Process pressure

• Ambient temperature

• Measuring range

 Are the measuring point identification and labeling correct (visual inspection)?

Installation Waterpilot FMX21

 Is the device adequately protected from precipitation and direct sunlight?

 Check that all screws are firmly seated.

22 Endress+Hauser

Waterpilot FMX21 Electrical connection

RD

BK

RD

BK

WH

YE BU

BR

a

A B

e

)

)

)

)

c

c

d

d

b

b

a

FMX21

FMX21

6 Electrical connection

WARNING

L

Electrical safety is compromised by an incorrect connection!

When using the measuring device in a hazardous area, the relevant national standards

‣

and guidelines as well as the Safety Instructions (XAs) or installation or control
drawings (ZDs) must be adhered to. All data relating to explosion protection can be
found in separate documentation which is available on request. This documentation is
supplied with the devices as standard →  7

6.1 Connecting the device

WARNING

L

Electrical safety is compromised by an incorrect connection!

The supply voltage must match the supply voltage specified on the nameplate →  13

‣

Switch off the supply voltage before connecting the device.

‣

The cable must end in a dry room or a suitable terminal box. The IP66/IP67 terminal

‣

box with GORE-TEX® filter from Endress+Hauser →  20 is suitable for outdoor
installation.
Connect the device in accordance with the following diagrams. Reverse polarity

‣

protection is integrated into the Waterpilot FMX21 and the TMT182 temperature head
transmitter. Changing the polarities will not result in the destruction of the devices.
A suitable circuit breaker should be provided for the device in accordance with IEC/EN

‣

61010.

6.1.1 Waterpilot with Pt100

A0019441

A Waterpilot FMX21
B Waterpilot FMX21 with Pt100 (not for use in hazardous areas); option "NB", Product Configurator order code

for "Accessories"
a Not for the FMX21 with external diameter of 29 mm (1.14 in)
b 10.5 to 30 V DC (hazardous area), 10.5 to 35 V DC
c 4...20 mA
d Resistance (RL)

e Pt100

Endress+Hauser 23

Electrical connection Waterpilot FMX21

)

)

a

b

c

e

f

d

cd

g

RD BKWHYE

BU

BR

6

5

4

3

2

1

FMX21

6.1.2 Waterpilot with Pt100 and TMT182 temperature head transmitter (4 to 20 mA)

a Not for the FMX21 with external diameter of 29 mm (1.14 in)
b 10.5 to 35 V DC
c 4...20 mA
d Resistance (RL)

e Temperature head transmitter TMT182 (4 to 20 mA) (not for use in hazardous areas)
f 11.5 to 35 V DC
g Pt100

Ordering information: options "NB" and "PT", Product Configurator order code for
"Accessories mounted" and "Accessories enclosed"

6.1.3 Wire colors

RD = red, BK = black, WH = white, YE = yellow, BU = blue, BR = brown

Connection classification as per IEC 61010-1:

• Overvoltage category 1

• Pollution level 1

6.1.4 Connection data

Connection classification as per IEC 61010-1:

• Overvoltage category 1

• Pollution level 1

A0018780

Connection data in the hazardous area

See relevant XA.

24 Endress+Hauser

Waterpilot FMX21 Electrical connection

6.2 Supply voltage

WARNING

L

Supply voltage might be connected!

Risk of electric shock and/or explosion!

When using the measuring device in hazardous areas, installation must comply with

‣

the corresponding national standards and regulations as well as the Safety Instructions.
All explosion protection data are given in separate documentation which is available

‣

upon request. The Ex documentation is supplied as standard with all devices approved
for use in explosion hazardous areas.

6.2.1 FMX21 + Pt100 (optional)

• 10.5 to 35 V (not hazardous areas)

• 10.5 to 30 V (hazardous areas)

6.2.2 TMT182 temperature head transmitter (optional)

11.5 to 35 V DC

6.3 Cable specifications

In the following cases, Endress+Hauser recommends the use of a shielded cable as the
cable extension:

• For large distances between the end of the extension cable and the display and/or
evaluation unit

• For large distances between the end of the extension cable and the temperature head
transmitter

• When directly connecting the Pt100 signal to a display and/or evaluation unit

The extension cables are shielded for device versions with external diameters of 22
mm (0.87 in) and 42 mm (1.65 in).

6.3.1 FMX21 + Pt100 (optional)

• Commercially available instrument cable

• Terminals, terminal box: 0.08 to 2.5 mm2 (28 to 14 AWG)

6.3.2 TMT182 temperature head transmitter (optional)

• Commercially available instrument cable

• Terminals, terminal box: 0.08 to 2.5 mm2 (28 to 14 AWG)

• Transmitter connection: max. 1.75 mm2 (15 AWG)

6.4 Power consumption

6.4.1 FMX21 + Pt100 (optional)

• ≤ 0.805 W at 35 V DC (non-hazardous area)

• ≤ 0.690 W at 30 V DC (hazardous area)

6.4.2 TMT182 temperature head transmitter (optional)

≤ 0.805 W at 35 V DC

Endress+Hauser 25

Electrical connection Waterpilot FMX21

R

Lmax

– 2 0.09•

• L – R

U – 10.5 V

23 mA

W

m

£

413

630

195

1065

35

20

25

10.5

15

847

30

R

[ ]W

U

[ ]

V

– R

U – 11.5 V

0.023 A

£

R

Lmax

370

587

152

1022

35

20

25

11.5

15

804

30

R

[ ]W

U

[ ]

V

A B

add add

6.5 Current consumption

6.5.1 FMX21 + Pt100 (optional)

• Max. current consumption: ≤ 23 mA
Min. current consumption: ≥ 3.6 mA

• Pt100: ≤ 0.6 mA

6.5.2 TMT182 temperature head transmitter (optional)

• Max. current consumption: ≤ 23 mA

• Min. current consumption: ≥ 3.5 mA

• Pt100 via temperature head transmitter: ≤ 0.6 mA

6.6 Maximum load

The maximum load resistance depends on the supply voltage (U) and must be determined
individually for each current loop, see formula and diagrams for FMX21 and temperature
head transmitter.

The total resistance resulting from the resistances of the connected devices, the
connecting cable and, where applicable, the resistance of the extension cable may not
exceed the load resistance value.

A FMX21 load chart for estimating the load resistance. Additional resistances, such as the resistance of the

extension cable, have to be subtracted from the value calculated as shown in the equation.

B Load diagram for TMT182 temperature head transmitter for estimating the load resistance. Additional

resistances must be subtracted from the value calculated as shown in the equation

R

Max. load resistance [Ω]

Lmax

R

Additional resistances, such as resistance of the evaluation unit and/or display unit, cable resistance [Ω]

add

U Supply voltage [V]
L Basic length of extension cable [m] (cable resistance per wire 0.09 Ω/m)

26 Endress+Hauser

• When using the measuring device in a hazardous area, the relevant national
standards and regulations as well as the Safety Instructions or installation or control
drawings (XA) must be adhered to.

• When operating via a handheld terminal or via a PC with an operating program, a
minimum communication resistance of 250 Ω must be taken into account.

A0026500-EN

Waterpilot FMX21 Electrical connection

1

3

4

3

4

5

5

5

5

5

5

5

6

6

6

2

A

B

B

C

2

6.7 Connecting the measuring unit

6.7.1 Overvoltage protection

To protect the Waterpilot and the TMT182 temperature head transmitter from large
interference voltage peaks, Endress+Hauser recommends installing overvoltage protection
upstream and downstream of the display and/or evaluation unit as shown in the graphic.

A Power supply, display and evaluation unit with one input for Pt100
B Power supply, display and evaluation unit with one input for 4 to 20 mA
C Power supply, display and evaluation unit with two inputs for 4 to 20 mA
1 Waterpilot FMX21 HART
2 Connection for integrated Pt100 in the FMX21
3 4 to 20 mA HART (temperature)
4 4 to 20 mA HART (level)
5 Overvoltage protection, e.g. HAW from Endress+Hauser (not for use in hazardous areas).
6 Power supply

A0018941

Further information on the TMT182 temperature head transmitter for HART
applications from Endress+Hauser can be found in the Technical Information
TI00078R/09/EN.

6.7.2 Connecting the Commubox FXA195

Endress+Hauser 27

The Commubox FXA195 connects intrinsically safe transmitters with HART protocol to the
USB interface of a computer. This enables remote operation of the transmitter using the
Endress+Hauser operating program FieldCare. The power is supplied to the Commubox via

Electrical connection Waterpilot FMX21

3

7 6

4

1

5

2

the USB interface. The Commubox is also suitable for connecting to intrinsically safe
circuits. For further information, see the Technical Information TI00404F/00/EN.

6.7.3 Connecting the Field Xpert SFX

Compact, flexible and robust industrial handheld terminal for remote configuration and for
obtaining measured values via the HART current output (4 to 20 mA). For details, see
Operating Instructions BA00060S/04/EN.

A0018811

1 Waterpilot FMX21
2 Required communication resistor ≥ 250 Ω
3 Computer with operating tool (e.g. FieldCare)
4 Commubox FXA195 (USB)
5 Transmitter power supply unit, e.g. RN221N (with communication resistor)
6 Field Xpert SFX
7 VIATOR Bluetooth modem with connecting cable

Only use certified operating devices in hazardous area!

WARNING

L

Risk of explosion!

Do not change the battery of the handheld terminal in the hazardous area.

‣

When using the measuring device in a hazardous area, the relevant national standards

‣

and regulations as well as the Safety Instructions (XAs) or installation or control
drawings (ZDs) must be adhered to.

28 Endress+Hauser

Waterpilot FMX21 Electrical connection

FXN520

1 2 3 4

6.7.4 Connecting for air pressure compensation with external measured value

A0018757

1 Fieldgate FXA520
2 Multidrop connector FXN520
3 Cerabar
4 Waterpilot FMX21

For applications in which condensation may occur, the use of an absolute pressure probe is
recommended. For level measurement using an absolute pressure probe, the measured
value is affected by fluctuations in the ambient air pressure. To correct the resulting
measured error, you can connect an external absolute pressure sensor (e.g. Cerabar) to the
HART signal cable, switch the Waterpilot to burst mode and operate the Cerabar in "Electr.
Delta P" mode.

By switching on the "Electr. Delta P" application, the external absolute pressure sensor
calculates the difference between the two pressure signals and can thus determine the
level precisely. Only one level measured value can be corrected in this way.

If using intrinsically safe devices, the regulations which apply to interconnecting
intrinsically safe circuits as outlined in IEC 60079-14 (proof of intrinsic safety) must
be observed.

6.7.5 Connecting an external temperature sensor/temperature head transmitter for density compensation

The Waterpilot FMX21 can correct measured errors that result from fluctuations in the
density of the water caused by temperature. Users can choose from the following options:

Use the internally measured sensor temperature of the FMX21

The internally measured sensor temperature is calculated in the Waterpilot FMX21 for
density compensation. The level signal is thus corrected according to the density
characteristic line of the water.

Use the optional internal Pt100 temperature sensor for density compensation in a
suitable HART master (e.g. PLC)

The Waterpilot FMX21 is available with an optional Pt100 temperature sensor. Endress
+Hauser additionally offers the TMT182 temperature head transmitter to convert the
Pt100 signal to a 4 to 20 mA HART signal. The temperature and pressure signal is
requested by a HART master (e.g. PLC), where a corrected level value can be generated
using a stored linearization table or density function (of a chosen medium).

Endress+Hauser 29

Electrical connection Waterpilot FMX21

1 2 3 4

FXN520

FXN520

1 2 3 4

A0018763

1 HART master, e.g. PLC (programmable logic controller)
2 Multidrop connector FXN520
3 Temperature head transmitter TMT182
4 Waterpilot FMX21

Use an external temperature signal which is transmitted to the FMX21 via HART
burst mode

The Waterpilot FMX21 is available with an optional Pt100 temperature sensor. In this
case, the signal of the Pt100 is analyzed using a HART-compliant (min. HART 5.0)
temperature head transmitter that supports burst mode. The temperature signal can thus
be transmitted to the FMX21. The FMX21 uses this signal for density correction of the
level signal.

The TMT182 temperature head transmitter is not suitable for this configuration.

1 Fieldgate FXA520
2 Multidrop connector FXN520
3 Temperature head transmitter TMT182 (burst mode)
4 Waterpilot FMX21

Without additional compensation due to the anomaly of water, errors of up to 4% may
occur at a temperature of +70 °C (+158 °F), for example. With density compensation, this
error can be decreased to 0.5 % in the entire temperature range from
0 to +70 °C (+32 to +158 °F).

For further information on the devices, please refer to the relevant Technical
Information:

• TI00078R: Temperature head transmitter TMT182 (4 to 20 mA HART)

• TI00369F: Fieldgate FXA520

• TI00400F: Multidrop connector FXN520

30 Endress+Hauser

A0018764

Waterpilot FMX21 Electrical connection

6.8 Post-connection check

 Is the device or cable undamaged (visual check)?

 Do the cables comply with the requirements ?

 Do the cables have adequate strain relief?

 Are all cable glands installed, securely tightened and leak-tight?

 Does the supply voltage match the specifications on the nameplate?

 Is the terminal assignment correct ?

Endress+Hauser 31

Operation options Waterpilot FMX21

7 Operation options

Endress+Hauser offers comprehensive measuring point solutions with display and/or
evaluation units for the Waterpilot FMX21 and TMT182 temperature head transmitter.

Your Endress+Hauser service organization would be glad to be of service if you have
any other questions. Contact addresses can be found on the website at
www.endress.com/worldwide

7.1 Overview of operating options

7.1.1 Operation using Endress+Hauser operating program

The FieldCare operating program is an Endress+Hauser plant asset management tool
based on FDT technology. With FieldCare, you can configure all Endress+Hauser devices as
well as devices from other manufacturers that support the FDT standard.

Hardware and software requirements can be found on the Internet:

www.de.endress.com → Search: FieldCare → FieldCare → Technical Data.

FieldCare supports the following functions:

• Configuration of transmitters in online/offline mode

• Loading and saving device data (upload/download)

• Documentation of the measuring point

Connection options:

• HART via Commubox FXA195 and the USB port of a computer

• HART via FXA520 Fieldgate

• Further information on FieldCare and software download can be found on the
internet (www.de.endress.com ® Downloads ® Text Search: FieldCare).

• Connecting the Commubox FXA195

• As not all internal device dependencies can be mapped in offline operation, the
consistency of the parameters must be checked once again before they are
transmitted to the device.

7.1.2 Operation using Field Xpert SFX

Compact, flexible and robust industrial handheld terminal for remote configuration and for
obtaining measured values via the HART current output or FOUNDATION Fieldbus. For
details, see the Operating Instructions BA00060S/04.

32 Endress+Hauser

Waterpilot FMX21 Operation options

7.2 Operating concept

Operation with an operating menu is based on an operation concept with "user roles" .

User role Meaning

Operator Operators are responsible for the devices during normal "operation". This is usually limited to

reading process values either directly at the device or in a control room. If the work with the
devices goes beyond reading, it concerns simple, application-specific functions that are used in
operation. Should an error occur, these users simple forward the information on the errors but
do not intervene themselves.

Maintenance Service engineers usually work with the devices in the phases following device commissioning.

They are primarily involved in maintenance and troubleshooting activities for which simple
settings have to be made at the device. Technicians work with the devices over the entire life
cycle of the product. Thus, commissioning and advanced settings and configurations are some of
the tasks they have to carry out.

Expert Experts work with the devices over the entire life cycle of the device, but, in part, have high

requirements on the devices. Individual parameters/functions from the overall functionality of
the devices are required for this purpose time and again. In addition to technical, process­oriented tasks, experts can also perform administrative tasks (e.g. user administration). "Experts"
can avail of the entire parameter set.

7.3 Structure of the operating menu

User role Submenu Meaning/use

Operator Display/

operat.

Maintenance setup Contains all the parameters that are needed to commission measuring operations.

Contains parameters that are needed to configure the measured value display
(selecting the values displayed, display format, etc.). With this submenu, users can
change the measured value display without affecting the actual measurement.

This submenu has the following structure:

• Standard setup parameters
A wide range of parameters, which can be used to configure a typical application,
is available at the start. The measuring mode selected determines which
parameters are available. After making settings for all these parameters, the
measuring operation should be completely configured in the majority of cases.

• "Extended setup" submenu
The "Extended setup" submenu contains additional parameters for more in-depth
configuration of the measurement operation, for conversion of the measured
value and for scaling the output signal. This menu is split into additional
submenus depending on the measuring mode selected.

Endress+Hauser 33

Operation options Waterpilot FMX21

User role Submenu Meaning/use

Maintenance Diagnosis Contains all the parameters that are needed to detect and analyze operating errors.

This submenu has the following structure:

• Diagnostic list
contains up to 10 currently pending error messages.

• Event logbook
contains the last 10 error messages (no longer pending).

• Instrument info
contains information for identifying the device.

• Measured values
contains all current measured values.

• Simulation
Is used to simulate pressure, level, current and alarm/warning.

• Enter reset code

Expert Expert Contains all the parameters of the device (including those already in one of the

submenus). The "Expert" submenu is structured by the function blocks of the device.
It thus contains the following submenus:

• System
contains all device parameters that do not affect either measurement or
integration into a distributed control system.

• Measurement
contains all parameters for configuring the measurement.

• Output
contains all parameters for configuring the current output.

• Communication
contains all parameters for configuring the HART interface.

• Diagnosis
contains all parameters required to detect and analyze operating errors.

7.4 Locking/unlocking operation

Once you have entered all the parameters, you can lock your entries against unauthorized
and undesired access.

The "Operator code" parameter is used to lock/unlock the device.

Operator code

Navigation Setup → Extended setup → Operator code

Read permission Operators/Service engineers/Expert

Write permission Operators/Service engineers/Expert

Description Use this function to enter a code to lock or unlock operation.

User entry •

Factory setting 0

Note The release code is "0" in the order configuration. Another release code can be defined in

To lock: Enter a number ¹ the release code (value range: 1 to 65535).

• To unlock: Enter the release code.

the "Code definition" parameter. If the user has forgotten the release code, the release code
can be visible by entering the number "5864".

The release code is defined in the "Code definition" parameter.

Code definition

34 Endress+Hauser

Waterpilot FMX21 Operation options

Navigation Setup → Extended setup → Code definition

Read permission Operators/Service engineers/Expert

Write permission Operators/Service engineers/Expert

Description Use this function to enter a release code with which the device can be unlocked.

User entry A number from 0 to 9999

Factory setting 0

7.5 Resetting to factory settings (reset)

By entering a certain code, you can completely or partially reset the entries for the
parameters to the factory settings

1)

. Enter the code via the "Enter reset code"

parameter (menu path: "Diagnosis" → "Enter reset code").

There are various reset codes for the device. The following table illustrates which
parameters are reset by the particular reset codes. To perform a reset, operation must
be unlocked (see "Locking/unlocking operation" section →  34).

Any customer-specific configuration carried out at the factory is not affected by a
reset (customer-specific configuration remains). If you want to change the customer­specific configuration carried out at the factory, please contact Endress+Hauser
Service. As there is no separate service level, the order code and serial number can be
changed without a specific release code.

Reset code

62 PowerUp reset (warm start)

333 User reset

7864 Total reset

1)

Description and effect

• The device is restarted.

• Data is read back anew from the EEPROM (process is reinitialized).

• Any simulation which may be running is ended.

• This code resets all the parameters apart from:

- Device tag

- Linearization table

- Operating hours

- Event logbook

- Curr. trim 4 mA

- Curr. trim 20 mA

• Any simulation which may be running is ended.

• The device is restarted.

• This code resets all the parameters apart from:

- Operating hours

- Event logbook

• Any simulation which may be running is ended.

• The device is restarted.

1) To be entered in "System" → "Management" → "Enter reset code"

After a "Total reset" in FieldCare you have to press the "refresh" button in order to
ensure that the measuring units are also reset.

1) . The factory setting for the individual parameters is specified in the parameter description

Endress+Hauser 35

Integrating device via HART® protocol

Waterpilot FMX21

8

Integrating device via HART® protocol

Version data for the device

Firmware version 01.00.zz • On the title page of the Operating instructions

• On nameplate

• Firmware Version parameter
Diagnosis→ Instrument info → Firmware version

Manufacturer ID 17 (0x11) Manufacturer ID. parameter

Diagnosis → Instrument info→ Manufacturer ID

Device type code 36 (0x24) Device type parameter

Diagnosis → Instrument info → Device type

HART protocol revision 6.0 ---

Device revision 1 • On transmitter nameplate

• Device revision parameter
Diagnosis→ Instrument info → Device revision

The suitable device description file (DD) for the individual operating tools is listed in the
table below, along with information on where the file can be acquired.

Operating tools

Operating tool Reference sources for device descriptions (DD and DTM)

FieldCare • www.endress.com → Downloads area

• CD–ROM (contact Endress+Hauser)

• DVD (contact Endress+Hauser)

AMS Device Manager
(Emerson Process Management)

SIMATIC PDM
(Siemens)

Field Communicator 375, 475
(Emerson Process Management)

www.endress.com → Downloads area

www.endress.com → Downloads area

Use update function of handheld terminal

8.1 HART process variables and measured values

The following numbers are assigned to the process variables in the factory:

Process variable Meas. Level

Linear Table active

First process variable

(Primary variable)

Second process variable

(Secondary variable)

(Pressure measured)

0

2

(Corrected press.)

8

(Level before

linearization)

0

(Pressure measured)

(Tank content)

(Level before

linearization)

9

8

36 Endress+Hauser

Waterpilot FMX21

Process variable Meas. Level

Third process variable

(Tertiary variable)

Fourth process variable

(Quaternary variable)

3

(Sensor pressure)

The assignment of the device variables to the process variable is displayed in the
Expert → Communication → HART output menu.

The assignment of the device variables to the process variable can be changed using
HART command 51.

An overview of the possible device variables can be found in the following section.

8.2 Device variables and measured values

The following measured values are assigned to the individual device variables:

Device variable code Device variable Measured value

0 PRESSURE_1_FINAL_VALUE Pressure measured All

1 PRESSURE_1_AFTER_DAMPING Press after damping All

2 PRESSURE_1_AFTER_CALIBRATION Corrected press. All

3 PRESSURE_1_AFTER_SENSOR Corrected press. All

4 MEASURED_TEMPERATURE_1 Sensor temp. All

8 MEASURED_LEVEL_AFTER_ SIMULATION Level before lin. Only level

9 MEASURED_TANK_CONTENT_AFTER_ SIMULATION Tank content Only level

10 CORRECTED_MEASUREMENT_ DENSITY Process density Only level

12 HART_INPUT_VALUE HART input val. Cannot be selected as output

251 None (no device variable is mapped) - All (but only for quaternary variable)

Integrating device via HART® protocol

Linear Table active

2

(Corrected press.)

4

(Sensor temp.)

(Pressure measured)

0

The device variables can be queried from a HART® master using HART® command 9 or

33.

Endress+Hauser 37

Commissioning Waterpilot FMX21

9 Commissioning

NOTICE

If a pressure smaller than the minimum permitted pressure or greater than the
maximum permitted pressure is present at the device, the following messages are
output in succession:

"S140 Working range P" or "F140 Working range P" (depending on the setting in the

‣

"Alarm behav. P" parameter)
"S841 Sensor range" or "F841 Sensor range" (depending on the setting in the "Alarm

‣

behav. P" parameter)
"S971 Adjustment" (depending on setting in "Alarm behav. P" parameter

‣

9.1 Post-installation check and function check

Before commissioning your measuring point, ensure that the post-installation and post­connection check have been performed.

• "Post-installation check" checklist →  21

• "Post-connection check" checklist →  31

9.2 Unlocking/locking configuration

If the device is locked to prevent configuration, it must first be unlocked.

9.2.1 Locking/unlocking software

If the device is locked via the software (device access code), the key symbol appears in the
measured value display. If an attempt is made to write to a parameter, a prompt for the
device access code appears. To unlock, enter the user-defined device access code.

9.3 Commissioning

Commissioning comprises the following steps:

• Function check →  38

• Selecting the language, measuring mode and pressure unit →  39

• Position adjustment →  40

• Configuring measurement:
– Pressure measurement →  41
– Level measurement →  43

38 Endress+Hauser

Waterpilot FMX21 Commissioning

9.4 Selecting the language

9.4.1 Configure language

9.5 Measuring mode selection

The device is configured for the "Pressure" measuring mode as standard. The
measuring range and the unit in which the measured value is transmitted correspond
to the data on the nameplate.

WARNING

L

Changing the measuring mode affects the span (URV)

This situation can result in product overflow.

If the measuring mode is changed, the setting for the span (URV) must be checked in

‣

the "Setup" operating menu and readjusted if necessary.

Measuring mode

Navigation Setup → Measuring mode

Write permission Operators/Service engineers/Expert

Description Select the measuring mode.

The operating menu is structured differently depending on the measuring mode selected.

A0017654-EN

Options • Meas.

• Level

Factory setting Level

Endress+Hauser 39

Commissioning Waterpilot FMX21

9.6 For selecting the pressure engineering unit

Press. eng. unit

Navigation Setup → Press. eng. unit

Write permission Operators/Service engineers/Expert

Description Select the pressure engineering unit. If a new pressure engineering unit is selected, all

pressure-specific parameters are converted and displayed with the new unit.

Options • mbar, bar

• mmH2O, mH2O, inH2O

• ftH2O

• Pa, kPa, MPa

• psi

• mmHg, inHg

• kgf/cm

2

Factory setting mbar or bar depending on the nominal measuring range of the sensor module, or as per

order specifications

9.7 Position adjustment

The pressure resulting from the orientation of the device can be corrected here.

Pos. zero adjust (relative pressure sensor)

Navigation Setup → Pos. zero adjust

Write permission Operators/Service engineers/Expert

Description Position adjustment – the pressure difference between zero (set point) and the measured

pressure need not be known.

Options • Confirm

• Cancel

Example • Measured value = 2.2 mbar (0.033 psi)

• You correct the measured value via the "Pos. zero adjust" parameter with the "Confirm"
option. i.e. This means that you are assigning the value 0.0 to the pressure present.

• Measured value (after pos. zero adjust) = 0.0 mbar

• The current value is also corrected.

Factory setting Cancel

Calib. offset (absolute pressure sensor)

40 Endress+Hauser

Waterpilot FMX21 Commissioning

Navigation Setup → Calib. offset

Write permission Operators/Service engineers/Expert

Description Position adjustment – the pressure difference between zero (set point) and the measured

pressure must be known.

Options • Confirm

• Cancel

Example • Measured value = 982.2 mbar (15 psi)

• You correct the measured value via the "Calib. offset" parameter with the "Confirm"
option. i.e. This means that you are assigning the value 980.0 to the pressure present.

• Measured value (after position adjustment) = 980 mbar (15 psi)

• The current value is also corrected.

Factory setting Cancel

9.8 Configuring the damping

The pressure resulting from the orientation of the device can be corrected here.

Damping

Navigation Setup → Damping

Write permission Operators/Service engineers/Expert

(if the "Damping" DIP switch is set to "on")

Description

Input range 0.0 to 999.0 s

Factory setting 2.0 sec. or according to order specifications

Enter damping time (time constant t) ("Damping" DIP switch set to "on")
Display damping time (time constant t) ("Damping" DIP switch set to "off").
The damping affects the speed at which the measured value reacts to changes in pressure.

9.9 Configuring pressure measurement

9.9.1 Calibration with reference pressure (wet calibration)

Example:

In this example, a device with a 400 mbar (6 psi) sensor module is configured for the
0 to +300 mbar (0 to 4.5 psi) measuring range i.e. 0 mbar is assigned to the 4 mA value
and 300 mbar (4.5 psi) is assigned to the 20 mA value.

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Commissioning Waterpilot FMX21

i

p

A

B

Prerequisite:

The pressure values 0 mbar and 300 mbar (4.5 psi) can be specified. For example, the
device is already installed.

Due to the orientation of the device, there may be pressure shifts in the measured
value, i.e. the measured value is not zero in a pressureless condition. For information
on how to perform a position adjustment, see →  40.

Description

1 Select the "Pressure" measuring mode via the

"Measuring Mode" parameter.
Menu path: Setup → Measuring mode

WARNING

L

Changing the measuring mode affects the
span (URV)

This situation can result in product overflow.

If the measuring mode is changed, the

‣

setting for the span (URV) must be
checked in the "Setup" operating menu and
readjusted if necessary.

2 Select a pressure unit via the "Press. eng. unit"

parameter, here "mbar" for example.
Menu path: Setup → Press. eng. unit

3 The pressure for the LRV (4 mA value) is

present at the device, 0 mbar for example.

Select the "Get LRV" parameter.
Menu path: Setup → Extended setup → Current
output → Get LRV

Confirm the present value by selecting "Apply".
The present pressure value is assigned to the
lower current value (4 mA).

4 The pressure for the URV (20 mA value) is

present at the device, 300 mbar (4.5 psi).

Select the "Get URV" parameter.
Menu path: Setup → Extended setup → Current
output → Get URV

Confirm the present value by selecting "Apply".
The present pressure value is assigned to the
upper current value (20 mA).

5 Result:

The measuring range is configured for
0 to +300 mbar (0 to 4.5 psi).

A See table, step 3.
B See table, step 4.
i Current value
p Meas.

A0017671

9.9.2 Calibration without reference pressure (dry calibration)

Example:

In this example, a device with a 400 mbar (6 psi) sensor module is configured for the
0 to +300 mbar (0 to 4.5 psi) measuring range, i.e. 0 mbar is assigned to the 4 mA value
and 300 mbar (4.5 psi) is assigned to the 20 mA value.

Prerequisite:

42 Endress+Hauser

This is a theoretical calibration, i.e. the pressure values for the lower and upper range are
known.

Due to the orientation of the device, there may be pressure shifts in the measured
value, i.e. the measured value is not zero in a pressureless condition. For information
on how to perform a position adjustment, see →  40.

Waterpilot FMX21 Commissioning

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Description

1 Select the "Pressure" measuring mode via the

"Measuring Mode" parameter.
Menu path: Setup → Measuring mode

WARNING

L

Changing the measuring mode affects the
span (URV)

This situation can result in product overflow.

If the measuring mode is changed, the

‣

setting for the span (URV) must be
checked in the "Setup" operating menu and
readjusted if necessary.

2 Select a pressure unit via the "Press. eng. unit"

parameter, here "mbar" for example.
Menu path: Setup → Press. eng. unit

3 Select the "Set LRV" parameter.

Menu path: Setup → Extended setup → Current
output → Set LRV

Enter the value for the "Set LRV" parameter
(here 0 mbar) and confirm. This pressure value
is assigned to the lower current value (4 mA).

4 Select the "Set URV" parameter.

Menu path: Setup → Extended setup → Current
output → Set URV

Enter the value for the "Set URV" parameter,
here 300 mbar (4.5 psi), and confirm. This
pressure value is assigned to the upper current
value (20 mA).

5 Result:

The measuring range is configured for
0 to +300 mbar (0 to 4.5 psi).

A See table, step 3.
B See table, step 4.
i Current value
p Meas.

A0017671

9.10 Configuring level measurement

9.10.1 Information on level measurement

You have a choice of two methods for calculating the level: "In pressure" and "In
height". The table in the "Overview of level measurement" section that follows
provides you with an overview of these two measuring tasks.

• The limit values are not checked, i.e. the values entered must be appropriate for the
sensor module and the measuring task for the device to be able to measure
correctly.

• Customer-specific units are not possible.

• The values entered for "Empty calib./Full calib.", "Empty pressure/Full pressure",
"Empty height/Full height" and "Set LRV/Set URV" must be at least 1% apart. The
value will be rejected, and a warning message displayed, if the values are too close
together.

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1000 l

0 l

400 mbar

r = 1

g

cm

3

9.10.2 Overview of level measurement

Measuring task Level

selection

Calibration is
performed by
entering two
pressure-level value
pairs.

Calibration is
performed by
entering the density
and two height-level
value pairs.

"In
pressure"

"In height" • Calibration with

Measured variable
options

Via the "Output unit"
parameter :
%, level, volume or
mass units

Description Measured value

display

• Calibration with
reference pressure
(wet calibration)
→  46

• Calibration without
reference pressure (dry
calibration) →  44

reference pressure
(wet calibration)
→  51

• Calibration without
reference pressure (dry
calibration) →  48

The measured value
display and the "Level
before lin" parameter
display the measured
value.

9.10.3 "In pressure" level selection Calibration without reference pressure (dry calibration)

Example:

In this example, the volume in a tank should be measured in liters. The maximum volume
of 1 000 l (264 gal) corresponds to a pressure of 400 mbar (6 psi).

The minimum volume of 0 liters corresponds to a pressure of 0 mbar since the process
isolating diaphragm of the probe is at the start of the level measuring range.

Prerequisite:

• The measured variable is in direct proportion to the pressure.

• This is a theoretical calibration i.e. the pressure and volume values for the lower and

upper calibration point must be known.

• The values entered for "Empty calib./Full calib.", "Empty pressure/Full pressure" and
"Set LRV/Set URV" must be at least 1% apart. The value will be rejected, and a
warning message displayed, if the values are too close together. Further limit values
are not checked, i.e. the values entered must be appropriate for the sensor module
and the measuring task for the device to be able to measure correctly.

• Due to the orientation of the device, there may be pressure shifts in the measured
value, i.e. when the vessel is empty or partly filled, the measured value is not zero.
For information on how to perform a position adjustment, see →  40.

Description

1 Select the "Level" measuring mode via the

"Measuring mode" parameter.
Menu path: Setup → Measuring mode

WARNING

L

Changing the measuring mode affects the
span (URV)

This situation can result in product overflow.

If the measuring mode is changed, the

‣

setting for the span (URV) must be
checked in the "Setup" operating menu and

2 Select a pressure unit via the "Press. eng. unit"

readjusted if necessary.

parameter, here "mbar" for example.
Menu path: Setup → Press. eng. unit

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Description

3

Select the "In pressure" level mode via the "Level
selection" parameter.
Menu path: Setup → Extended setup → Level →
Level selection.

4 Select a volume unit via the "Unit before lin."

parameter, here "l" (liter) for example.
Menu path: Setup → Extended setup → Level→
Unit before lin.

5 Select the "Dry" option via the "Calibration

mode" parameter.
Menu path: Setup → Extended setup → Level →
Calibration mode

6 Enter the volume value for the lower

calibration point via the "Empty calib."
parameter, here 0 liters for example.
Menu path: Setup → Extended setup → Level →
Empty calib.

7 Enter the pressure value for the lower

calibration point via the "Empty pressure"
parameter, here "0 mbar" for example.
Menu path: Setup → Extended setup → Level →
Empty pressure

8 Enter the volume value for the upper

calibration point via the "Full calib." parameter,
here 1 000 l (264 gal).
Menu path: Setup → Extended setup → Level →
Full calib.

9 Enter the pressure value for the upper

calibration point via the "Full pressure"
parameter, here 400 mbar (6 psi).
Menu path: Setup → Extended setup → Level →
Full pressure

10 "Adjust density" contains the factory setting 1.0

but can be changed if required. The value pairs
subsequently entered must correspond to this
density.
Menu path: Setup → Extended setup → Level →
Adjust density

11 Set the volume value for the lower current

value (4 mA) via the "Set LRV" parameter (0 l).
Menu path: Setup → Extended setup → Current
output → Set LRV

12 Set the volume value for the upper current

value (20 mA) via the "Set URV" parameter
(1 000 l (264 gal)).
Menu path: Setup → Extended setup → Current
output → Set URV

13 If the process uses a medium other than that

on which the calibration was based, the new
density must be specified in the "Process
density" parameter.
Menu path: Setup → Extended setup → Current
output → Process density.

1 See table, steps 6 and 7.
2 See table, steps 8 and 9.

A0017662

C See table, step 6.
D See table, step 7.
E See table, step 8.
F See table, step 9.
G See table, step 11
H See table, step 12
i Current value
p Meas.
v Volume

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0 mbar

300 mbar

3 m

0 m

Description

14 If density correction is required, assign the

temperature probe in the "Auto dens. corr."
parameter. A density correction is only possible
for water. A temperature-density curve that is
saved in the device is used. For this reason, the
"Adjust density" (step 10) and "Process density"
(step 13) parameters are not used here.
Menu path: Expert → Application → Level →
Auto dens. corr.

15 Result:

The measuring range is configured for
0 to 1 000 l (0 to 264 gal).

For this level mode, the measured variables %, level, volume and mass are available,
see "Unit before lin." .

9.10.4 "In pressure" level selection Calibration with reference pressure (wet calibration)

Example:

In this example, the level in a tank should be measured in "m". The maximum level is
3 m (9.8 ft).

The pressure range is derived from the level and the density of the medium. In this
situation, the device sets the pressure range to 0 to +300 mbar (0 to 4.5 psi).

Prerequisite:

• The measured variable is in direct proportion to the pressure.

• The tank can be filled and emptied.

The values entered for "Empty calib./Full calib." and" Set LRV/Set URV" and the
pressures present must be at least 1% apart. The value will be rejected, and a warning
message displayed, if the values are too close together. Other limit values are not
checked, i.e. the values entered must be appropriate for the sensor and the measuring
task for the device to be able to measure correctly.

Description

1 Perform a "position adjustment" →  40.

2 Select the "Level" measuring mode via the

"Measuring mode" parameter.
Menu path: Setup → Measuring mode

WARNING

L

Changing the measuring mode affects the
span (URV)

This situation can result in product overflow.

If the measuring mode is changed, the

‣

setting for the span (URV) must be
checked in the "Setup" operating menu and
readjusted if necessary.

3 Select a pressure unit via the "Press. eng. unit"

parameter, here "mbar" for example.
Menu path: Setup → Press. eng. unit

4 Select the "In pressure" level mode via the "Level

selection" parameter.
Menu path: Setup → Extended setup → Level →
Level selection.

1 See table, step 9.
2 See table, step 10.

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Description

5 If density correction is required, assign the

temperature probe in the "Auto dens. corr."
parameter.
Menu path: Expertc → Application → Auto
dens. corr.
A density correction is only possible for water.
A temperature-density curve that is saved in
the device is used. For this reason, the "Adjust
density" (step 8) and "Process density" (step 13)
parameters are not used here.

6 Select a level unit via the "Output unit"

parameter, "m" for example.
Menu path: Setup → Extended setup → Level →
Output unit

7 Select the "Wet" option via the "Calibration

mode" parameter.
Menu path: Setup → Extended setup → Level →
Calibration mode

8 If the calibration is performed with a medium

other than the process medium, enter the
density of the calibration medium in the
"Adjust density" parameter.
Menu path: Setup → Extended setup → Level →
Adjust density

The process density can be changed only



if automatic density correction is
switched off (see step 5).

9 The hydrostatic pressure for the lower

calibration point is present at the device, here
"0 mbar" for example.

Select the "Empty calib." parameter.
Menu path: Setup → Extended setup → Level →
Empty calib.

Enter the level value, here 0 m for example.
The pressure value present is assigned to the
lower level value by confirming the value.

10 The hydrostatic pressure for the upper

calibration point is present at the device, here
300 mbar (4.35 psi) for example.

Select the "Full calib." parameter.
Menu path: Setup → Extended setup → Level →
Full calib.

Enter the level value, 3 m (9.8 ft). The pressure
value present is assigned to the upper level
value by confirming the value.

11 Use the "Set LRV" parameter to set the level

value for the lower current value (4 mA), here
"0 m" for example.
Menu path: Setup → Extended setup → Current
output → Set LRV

12 Use the "Set URV" parameter to set the upper

current value (20 mA) (3 m (9.8 ft)).
Menu path: Setup → Extended setup → Current
output → Set URV

C See table, step 9.
D See table, step 10.
E See table, step 11.
F See table, step 12.
h Height
i Current value
p Meas.

A0017658

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Commissioning Waterpilot FMX21

1000 l

0 l

4 m

r = 1

g

cm

3

Description

12 If the process uses a medium other than that

on which the calibration was based, the new
density must be specified in the "Process
density" parameter.
Menu path: Setup → Extended setup → Level →
Process density.

The process density can be changed only



if automatic density correction is
switched off (see step 5).

13 Result:

The measuring range is configured for
0 to 3 m (0 to 9.8 ft).

For this level mode, the measured variables %, level, volume and mass are available,
see "Unit before lin." .

9.10.5 "In height" level selection Calibration without reference pressure (dry calibration)

Example:

In this example, the volume in a tank should be measured in liters. The maximum volume
of 1 000 l (264 gal) corresponds to a level of 4 m (13 ft). The minimum volume of 0 liter
corresponds to a level of 0 m since the process isolating diaphragm of the probe is at the
start of the level measuring range.

Prerequisite:

• The measured variable is in direct proportion to the pressure.

• This is a theoretical calibration i.e. the height and volume values for the lower and upper

calibration point must be known.

• The values entered for "Empty calib./Full calib.", "Empty height/Full height" and" Set
LRV/Set URV" must be at least 1% apart. The value will be rejected, and a warning
message displayed, if the values are too close together. Other limit values are not
checked, i.e. the values entered must be appropriate for the sensor and the
measuring task for the device to be able to measure correctly.

• Due to the orientation of the device, there may be pressure shifts in the measured
value, i.e. when the vessel is empty or partly filled, the measured value is not zero.
For information on how to perform a position adjustment, see →  40.

Description

1 Select the "Level" measuring mode via the

"Measuring mode" parameter.
Menu path: Setup → Measuring mode

WARNING

L

Changing the measuring mode affects the
span (URV)

This situation can result in product overflow.

If the measuring mode is changed, the

‣

setting for the span (URV) must be
checked in the "Setup" operating menu and
readjusted if necessary.

2 Select a pressure unit via the "Press. eng. unit"

parameter, here "mbar" for example.
Menu path: Setup → Press. eng. unit

48 Endress+Hauser

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Waterpilot FMX21 Commissioning

Description

3 Select the "In height" level mode via the "Level

selection" parameter.
Menu path: Setup → Extended setup → Level →
Level selection.

4 If density correction is required, assign the

temperature probe in the "Auto dens. corr."
parameter.
Menu path: Setup → Extended setup → Level →
Level selection.

4 Select a volume unit via the "Unit before lin."

parameter, here "l" (liter) for example.
Menu path: Setup → Extended setup → Level→
Unit before lin.
A density correction is only possible for water.
A temperature-density curve that is saved in
the device is used. For this reason, the "Adjust
density" (step 12) and "Process density" (step

15) parameters are not used here.

5 Select a volume unit via the "Output unit"

parameter, here here "l" (liter) for example.
Menu path: Setup → Extended setup → Level →
Output unit

6 Select a level unit via the "Height unit"

parameter, "m" for example.
Menu path: Setup → Extended setup → Level →
Height unit

1 See table, steps 10 and 11.
2 See table, steps 13 and 14.
3 See table, step 12

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Description

7 Select the "Dry" option via the "Calibration

mode" parameter.
Menu path: Setup → Extended setup → Level →
Calibration mode

8 Enter the volume value for the lower

calibration point via the "Empty calib."
parameter, here 0 liters for example.
Menu path: Setup → Extended setup → Level →
Empty calib.

9 Enter the height value for the lower calibration

point via the "Empty height" parameter, here 0
m for example.
Menu path: Setup → Extended setup → Level →
Empty height

10 Enter the volume value for the upper

calibration point via the "Full calib." parameter,
here 1 000 l (264 gal) for example.
Menu path: Setup → Extended setup → Level →
Full calib.

11 Enter the height value for the upper calibration

point via the "Full height" parameter, here
4 m (13 ft) for example.
Menu path: Setup → Extended setup → Level →
Full height

12 Enter the density of the medium via the "Adjust

density" parameter, here "1 g/cm3" (1 SGU) for
example.
Menu path: Setup → Extended setup → Level →
Adjust density

13 Set the volume value for the lower current

value (4 mA) via the "Set LRV" parameter (0 l).
Menu path: Setup → Extended setup → Current
output → Set LRV

14 Set the volume value for the upper current

value (20 mA) via the "Set URV" parameter
(1 000 l (264 gal)).
Menu path: Setup → Extended setup → Current
output → Set URV

15 If the process uses a medium other than that

on which the calibration was based, the new
density must be specified in the "Process
density" parameter.
Menu path: Setup → Extended setup → Current
output → Process density.

The process density can only be changed



if automatic density correction is
switched off (see Step 4).

16 Result:

The measuring range is configured for
0 to 1 000 l (0 to 264 gal).

C See table, step 12.
D See table, step 8.
E See table, step 10.
F See table, step 13.
G See table, step 14.
h Height
i Current value
p Meas.
v Volume

A0017666

For this level mode, the measured variables %, level, volume and mass are available,
see "Unit before lin." .

50 Endress+Hauser

Waterpilot FMX21 Commissioning

1000 l

0 l

4 m

r = 1

g

cm

3

9.10.6 "In height" level selection Calibration with reference pressure (wet calibration)

Example:

In this example, the volume in a tank should be measured in liters. The maximum volume
of 1 000 l (264 gal) corresponds to a level of 4 m (13 ft).

The minimum volume of 0 liter corresponds to a level of 0 m since the process isolating
diaphragm of the probe is at the start of the level measuring range. The density of the
fluid is 1 g/cm3 (1 SGU).

Prerequisite:

• The measured variable is in direct proportion to the pressure.

• The tank can be filled and emptied.

The values entered for "Empty calib./Full calib." and" Set LRV/Set URV" and the
pressures present must be at least 1% apart. The value will be rejected, and a warning
message displayed, if the values are too close together. Other limit values are not
checked, i.e. the values entered must be appropriate for the sensor and the measuring
task for the device to be able to measure correctly.

Description

1 Perform a "position adjustment" →  40.

2 Select the "Level" measuring mode via the

"Measuring mode" parameter.
Menu path: Setup → Measuring mode

WARNING

L

Changing the measuring mode affects the
span (URV)

This situation can result in product overflow.

If the measuring mode is changed, the

‣

setting for the span (URV) must be
checked in the "Setup" operating menu and
readjusted if necessary.

3 Select the "In height" level mode via the "Level

selection" parameter.
Menu path: Setup → Extended setup → Level →
Level selection.

4 If density correction is required, assign the

temperature probe in the "Auto dens. corr."
parameter.
Menu path: Expertc → Application → Auto
dens. corr.
A density correction is only possible for water.
A temperature-density curve that is saved in
the device is used. For this reason, the "Adjust
density" (step 11) and "Process density" (step

14) parameters are not used here.

5 Select a pressure unit via the "Press. eng. unit"

parameter, here "mbar" for example.
Menu path: Setup → Press. eng. unit

A0018827

1 See table, step 9.
2 See table, step 10.
3 See table, step 11.

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Description

6 Select a volume unit via the "Output unit"

parameter, here "l" (liter) for example.
Menu path: Setup → Extended setup → Level →
Output unit

7 Select a height unit via the "Height unit"

parameter, here "m" for example.
Menu path: Setup → Extended setup → Level →
Height unit

8 Select the "Wet" option via the "Calibration

mode" parameter.
Menu path: Setup → Extended setup → Level →
Calibration mode

9 The hydrostatic pressure for the lower

calibration point is present at the device, here
"0 mbar" for example.

Enter the volume value for the lower
calibration point via the "Empty calib."
parameter, here "0 liter" for example.
Menu path: Setup → Extended setup → Level →
Empty calib.

10 The hydrostatic pressure for the upper

calibration point is present at the device, here
"400 mbar (6 psi)" for example.

Enter the volume value for the upper
calibration point via the "Full calib." parameter,
here 1 000 l (264 gal) for example.
Menu path: Setup → Extended setup → Level →
Full calib.

11 If the calibration is performed with a medium

other than the process medium, enter the
density of the calibration medium in the
"Adjust density" parameter, here 1 g/cm3 (1
SGU) for example.
Menu path: Setup → Extended setup → Level →
Adjust density

The process density can only be changed



if automatic density correction is
switched off (see Step 4).

12 Set the volume value for the lower current

value (4 mA) via the "Set LRV" parameter (0 l).
Menu path: Setup → Extended setup → Current
output → Set LRV

13 Set the volume value for the upper current

value (20 mA) via the "Set URV"
parameter(1 000 l (264 gal)).
Menu path: Setup → Extended setup → Current
output → Set URV

14 If the process uses a medium other than that

on which the calibration was based, the new
density must be specified in the "Process
density" parameter.
Menu path: Setup → Extended setup → Level →
Process density.

The process density can only be changed



if automatic density correction is
switched off (see Step 4).

15 Result:

The measuring range is configured for
0 to 1 000 l (0 to 264 gal).

C See table, step 10.
D See table, step 8.
E See table, step 9.
F See table, step 11.
G See table, step 12.
h Height
i Current value
p Meas.
v Volume

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20%

20%

25%

The measured variables %, level, volume and mass are available for this level mode,
see "Output unit".

9.10.7 Calibration with partially filled vessel (wet calibration)

Example:

This example explains a wet calibration for cases in which it is not possible to empty the
vessel and then fill it to 100%.

During this wet calibration, a level of 20% is used as the calibration point for "Empty" and a
level of "25%" is used as the calibration point for "Full".

The calibration is then extended to 0% to 100% and lower range-value (LRV)/upper
range-value (URV) are adapted accordingly.

Prerequisite:

• The default value in level mode for the calibration mode is "Wet".

• This value can be adjusted: Menu path: Setup → Extended setup → Level → Calibration

mode

Description

1 Select the "Level" measuring mode via the

"Measuring mode" parameter.
Menu path: Setup → Measuring mode

WARNING

L

Changing the measuring mode affects the
span (URV)

This situation can result in product overflow.

If the measuring mode is changed, the

‣

setting for the span (URV) must be
checked in the "Setup" operating menu and
readjusted if necessary.

2 Set the value for "Empty calib." with the acting

pressure for the level, e.g. 20 %
Menu path: Setup → Extended setup → Level →
Empty calib.

A0018841

1 See table, step 2
2 See table, step 3

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Commissioning Waterpilot FMX21

Description

3 Set the value for "Full calib." with the acting

pressure for the level, e.g. 25 %.
Menu path: Setup → Extended setup → Level →
Full calib.

4 The values for the pressure when the vessel is

full or empty are measured automatically
during adjustment. The transmitter
automatically sets the pressure values that are
most suitable for "Empty calib." and "Full calib."
as the minimum and maximum pressure which
generates the output current. For this reason,
the correct upper-range value (URV) and the
correct lower-range value (LRV) must be set.

If the process uses a medium other than that on which the calibration was based,
the new density must be specified in the "Process density" parameter. In this
case, you have to enter the various densities via the following menu path:

• Setup → Extended setup → Level → Adjust density (034) e.g. 1.0 kg/l for water)

• Setup → Extended setup → Level → Process density (035) e.g. 0.8 kg/l for oil)

9.10.8 Level measurement with absolute pressure probe and external pressure signal (electrical differential pressure)

Example:

In this example, a Waterpilot FMX21 and a Cerabar M device (each with an absolute
pressure measuring cell) are connected via the common communication bus. The level can
thus be measured in a deep well, with simultaneous compensation for the effect of
atmospheric pressure.

54 Endress+Hauser

Waterpilot FMX21 Commissioning

FXN520

OPEN

CLOSE

90°

90°

Warning:
Avoid electrostatic charge in explosive atmosphere.
See instructions

Terminal Box for FMX21

1 2

4

3

5

1 Fieldgate FXA520
2 Multidrop connector FXN520
3 Terminal box (can be ordered as an accessory)
4 Cerabar M absolute pressure (atmospheric pressure)
5 Waterpilot absolute pressure (level)

Adjustment of the level sensor (Waterpilot)

1 Select the "Level" measuring mode via the "Measuring mode" parameter.

Menu path: Setup → Measuring mode

WARNING

L

Changing the measuring mode affects the span (URV)

This situation can result in product overflow.

If the measuring mode is changed, the setting for the span (URV) must be checked in the "Setup"

‣

operating menu and readjusted if necessary.

2 Select a pressure unit via the "Press. eng. unit" parameter, here "mbar" for example.

Menu path: Setup → Press. eng. unit

3 The sensor is unpressurized, perform a position adjustment →  40

4 Switch on burst mode via the "Burst mode" parameter.

Menu path: Expert → Communication → HART config

5 Set the output current to "Fixed" 4.0 mA via the "Current Mode" parameter.

Menu path: Expert → Communication → HART config

6 Configure an address ≠0 using the "Bus address" parameter, e.g. bus address = 1.

(HART 5.0 master: Range 0 to 15, where address = 0 calls up the "Signaling" setting; HART 6.0 master:
Range 0 to 63)
Menu path: Expert → Communication → HART config

A0018821

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Commissioning Waterpilot FMX21

Adjustment of the level sensor (Waterpilot)

1 Select the "Level" measuring mode via the "Measuring mode" parameter.

Menu path: Setup → Measuring mode

WARNING

L

Changing the measuring mode affects the span (URV)

This situation can result in product overflow.

If the measuring mode is changed, the setting for the span (URV) must be checked in the "Setup"

‣

operating menu and readjusted if necessary.

2 Select a pressure unit via the "Press. eng. unit" parameter, here "mbar" for example.

Menu path: Setup → Press. eng. unit

3 The sensor is unpressurized, perform a position adjustment →  40

4 Set the output current to "Fixed" 4.0 mA via the "Current Mode" parameter.

Menu path: Expert → Communication → HART config

5 Configure an address ≠0 using the "Bus address" parameter, e.g. bus address = 2.

(HART 5.0 master: Range 0 to 15, where address = 0 calls up the "Signaling" setting; HART 6.0 master:
Range 0 to 63)
Menu path: Expert → Communication → HART config

6 Activate the reading of a value sent externally in burst mode via the "Electr. delta P" parameter.

Menu path: Expert → Application

7 Perform level adjustment (wet or dry)

8 Result: The measured value output by the atmospheric pressure sensor equals the level in the deep well

(differential signal) and can be read out by means of a HART request for the address of the atmospheric
pressure sensor.

• It is not permissible to reverse the assignment of the measuring points to the direction of

communication.

• The measured value of the transmitting device (via burst) must always be greater than

the measured value of the receiving device (via "Electr. Delta P" mode).

• Adjustments that result in an offset of the pressure values (e.g. position adjustment,

trim) must always be performed in accordance with the individual sensor and its
orientation and independently of the "Electr. Delta P" application.

• Other settings result in non-permitted use of the "Electr. Delta P" mode and can lead to

incorrect measured values.

9.11 Automatic density compensation

9.11.1 Automatic density compensation with the internally measured sensor temperature

Example:

In this example, a Waterpilot FMX21 is used for level measurement in water. The change
in the water density caused by changing temperatures is automatically factored into the
level signal by activating the automatic density compensation.

56 Endress+Hauser

Waterpilot FMX21 Commissioning

1

2

A0018822

1 HART master, e.g. PLC (programmable logic controller)
2 Waterpilot FMX21

Adjustment of the Waterpilot for level measurement

1 Select the "Level" measuring mode via the "Measuring mode" parameter.

Menu path: Setup → Measuring mode

WARNING

L

Changing the measuring mode affects the span (URV)

This situation can result in product overflow.

If the measuring mode is changed, the setting for the span (URV) must be checked in the "Setup"

‣

operating menu and readjusted if necessary.

2 Select a pressure unit via the "Press. eng. unit" parameter, here "mbar" for example.

Menu path: Setup → Press. eng. unit

3 The sensor is unpressurized, perform a position adjustment →  40

4 Set the "Auto dens. corr." parameter to Sensor temperature.

Menu path: Expert → Application

5 Perform level adjustment (wet or dry)

6 Result: The measured value output by the Waterpilot corresponds to the level in the deep well corrected

by means of the density characteristic line of the water.

9.11.2 Automatic density compensation using an integrated Pt100 for calculation in a suitable HART master (e.g. PLC)

Example:

In this example, the FMX21 with an integrated Pt100 is connected via the common
communication bus to any temperature head transmitter with HART communication (e.g.
TMT182). The temperature and pressure signal are transmitted to the HART master (e.g.
PLC), where a corrected level value can be generated using a stored linearization table or
density function (of a chosen medium). A pressure signal and a temperature signal can
thus be generated with a chosen density function to compensate for a level.

Endress+Hauser 57

Commissioning Waterpilot FMX21

1 2 3 4

FXN520

A0018763

1 HART master, PLC (programmable logic controller)
2 Multidrop connector FXN520
3 Temperature head transmitter TMT182
4 Waterpilot FMX21

Adjustment of the Waterpilot for level measurement

1 Select the "Level" measuring mode via the "Measuring mode" parameter.

Menu path: Setup → Measuring mode

WARNING

L

Changing the measuring mode affects the span (URV)

This situation can result in product overflow.

If the measuring mode is changed, the setting for the span (URV) must be checked in the "Setup"

‣

operating menu and readjusted if necessary.

2 Select a pressure unit via the "Press. eng. unit" parameter, here "mbar" for example.

Menu path: Setup → Press. eng. unit

3 The sensor is unpressurized, perform a position adjustment →  40

4 Set the output current to "Fixed" 4.0 mA via the "Current Mode" parameter.

Menu path: Expert → Communication → HART config

5 Perform level adjustment (wet or dry)

6 Configure an address ≠0 using the "Bus address" parameter, e.g. bus address = 1.

(HART 5.0 master: Range 0 to 15, where address = 0 calls up the "Signaling" setting; HART 6.0 master:
Range 0 to 63)
Menu path: Expert → Communication → HART config

The output current of the temperature head transmitter used must also be set to "Fixed" and have a



HART address other than zero (e.g. address = 2).

7 Result: By calculating the pressure signal and temperature signal in a suitable HART master (e.g. PLC), a

corrected level value can be determined for a chosen medium using a suitable density function.

9.11.3 Automatic density compensation using an external temperature signal for calculation in the FMX21

Example:

In this example, the FMX21 with an integrated Pt100 is connected to a HART-compliant
temperature head transmitter via the common communication bus. In this case, the signal
of the Pt100 is analyzed using a HART-compliant (min. HART 5.0) temperature head
transmitter that supports burst mode. The change in the water density caused by changing
temperatures is automatically factored into the level signal by activating the automatic
density compensation.

58 Endress+Hauser

Waterpilot FMX21 Commissioning

FXN520

1 2 3 4

A0018764

1 Fieldgate FXA520
2 Multidrop connector FXN520
3 Temperature head transmitter TMT182 (burst mode)
4 Waterpilot FMX21

Configuring the HART-compliant temperature head transmitter (min. HART 5.0) with burst
function

The output current of the temperature head transmitter used should be set to "Fixed" and must have a
HART address other than zero (e.g. address = 1). The burst function must then be switched on with HART
command 1. This step should be performed before the procedure described below in order to avoid a
HART input error of the FMX21 being output during commissioning.

1 Select the "Level" measuring mode via the "Measuring mode" parameter.

Menu path: Setup → Measuring mode

WARNING

L

Changing the measuring mode affects the span (URV)

This situation can result in product overflow.

If the measuring mode is changed, the setting for the span (URV) must be checked in the "Setup"

‣

operating menu and readjusted if necessary.

2 Select a pressure unit via the "Press. eng. unit" parameter, here "mbar" for example.

Menu path: Setup → Press. eng. unit

3 The sensor is unpressurized, perform a position adjustment →  40

4 Set the "Auto dens. corr." parameter to "External value".

Menu path: Expert → Application

5 Perform level adjustment (wet or dry)

Result: The measured value output by the Waterpilot equals the level in the deep well corrected by means
of the density characteristic line of the water.

The TMT182 temperature head transmitter is not suitable for this configuration.

9.12 Linearization

9.12.1 Semi-automatic entry of a linearization table

Example:

In this example, the volume in a tank with a conical outlet should be measured in m3.

Endress+Hauser 59

Commissioning Waterpilot FMX21

3.5

0

3.0

V

[m]

3

h

[m]

0

v

h

i

v

Prerequisite:

• The tank can be filled or emptied. The linearization characteristic must rise or fall

continuously.

• The "Level" measuring mode has been selected.

• A level calibration has been performed.

• For a description of the parameters mentioned, see the "Description of device

parameters" section .

WARNING

L

Changing the measuring mode affects the span (URV)

This situation can result in product overflow.

If the measuring mode is changed, the setting for the span (URV) must be checked in

‣

the "Setup" operating menu and readjusted if necessary.

Description

1 Select the "Semiautom. entry" option via the

"Lin. mode" parameter.
Menu path: Setup → Extended setup →
Linearization → Lin. mode

2 Select using the "Unit after lin." e.g. m3.

Menu path: Setup → Extended setup →
Linearization → Unit after lin.

3 Fill the tank to the height of the 1st point.

A0018843

h Height
v Volume

4 Enter the number of the point in the table

using the "Line-numb" parameter e.g. 1.
Menu path: Setup → Extended setup →
Linearization → Line numb

The current level is displayed via the "X-value"
parameter.
Menu path: Setup → Extended setup →
Linearization → X-val

Enter the associated volume value via the "Y­val" parameter, here 0 m3 for example, and
confirm value.
Menu path: Setup → Extended setup →
Linearization → Y-val

5 To enter another point in the table, continue

filling the tank and select the "Next point"
option via the "Edit table" parameter. Enter the
next point as explained in Step 4.
Menu path: Setup → Extended setup →
Linearization → Edit table

A0017670

60 Endress+Hauser

Waterpilot FMX21 Commissioning

3.5

0

3.0

V

[m]

3

h

[m]

0

Description

6 Once all the points have been entered in the

table, select the "Activate table" option via the
"Lin. mode" parameter.
Menu path: Setup → Extended setup →
Linearization → Lin. mode

7 Result:

Result: The measured value after linearization
is displayed.

h Height
i Current value
v Volume

• Error message F510 "Linearization" and alarm current as long as the table is being
entered and until the table is activated.

• The lower-range value (= 4mA) is defined by the smallest point in the table.
The upper-range value (= 20mA) is defined by the largest point in the table.

• Using the parameters "Set LRV" and "Set URV", you can change the allocation of the
volume/mass values to the current values.

9.12.2 Manual entry of a linearization table

Example:

In this example, the volume in a tank with a conical outlet should be measured in m3.

Prerequisite:

• This is a theoretical calibration, i.e. the points for the linearization table are known.

• The "Level" measuring mode has been selected.

• A level calibration has been performed.

• The linearization characteristic must rise or fall continuously.

• For a description of the parameters mentioned, see the "Description of device
parameters" section .

WARNING

L

Changing the measuring mode affects the span (URV)

This situation can result in product overflow.

If the measuring mode is changed, the setting for the span (URV) must be checked in

‣

the "Setup" operating menu and readjusted if necessary.

Description

1 Select the "Manual entry" option via the "Lin.

mode" parameter.
Menu path: Setup → Extended setup →
Linearization → Lin. mode

2 Select using the "Unit after lin." e.g. m3.

Menu path: Setup → Extended setup →
Linearization → Unit after lin.

A0018843

h Height
v Volume

Endress+Hauser 61

Commissioning Waterpilot FMX21

v

h

i

v

Description

3 Enter the number of the point in the table

using the "Line-numb" parameter e.g. 1.
Menu path: Setup → Extended setup →
Linearization → Line numb

The level is entered via the "X-val" parameter,
here 0 m for example. Confirm your entry.
Menu path: Setup → Extended setup →
Linearization → X-val

Enter the associated volume value via the "Y­val" parameter, here 0 m3 for example, and
confirm value.
Menu path: Setup → Extended setup →
Linearization → Y-val

4 To enter another point in the table, select the

"Next point" option via the "Edit table"
parameter. Enter the next point as explained in
Step 3.
Menu path: Setup → Extended setup →
Linearization → Edit table

5 Once all the points have been entered in the

table, select the "Activate table" option via the
"Lin. mode" parameter.
Menu path: Setup → Extended setup →
Linearization → Lin. mode

6 Result:

Result: The measured value after linearization
is displayed.

h Height
i Current value
v Volume

A0017670

• Error message F510 "Linearization" and alarm current as long as the table is being
entered and until the table is activated.

• Error message F511/F512 "Linearization" and alarm current as long as the
linearization table consists of fewer than 2 points.

• The lower-range value (= 4mA) is defined by the smallest point in the table.
The upper-range value (= 20mA) is defined by the largest point in the table.

• Using the parameters "Set LRV" and "Set URV", you can change the allocation of the
volume/mass values to the current values.

9.13 Manual entry of a linearization table via operating tool

The following options are available to you with an operating tool that is based on FDT
technology (e.g. FieldCare), you can enter linearization using a module specially designed
for this purpose. This provides you with an overview of the selected linearization, even
during entry. In addition, it is possible to configure different tank shapes in FieldCare
("Device operation" → "Device functions" → "Additional functions" → "Linearization table"
menu).

The linearization table may also be entered manually point by point in the operating
tool menu (see section).

62 Endress+Hauser

Waterpilot FMX21 Commissioning

9.14 Backing up or duplicating the device data

The following options are available to you with an operating tool that is based on FDT
technology (e.g. FieldCare):

• Storage/recovery of configuration data.

• Duplication of device parameters.

• Transfer of all relevant parameters when replacing electronic inserts.

Use the following parameter for this:

Download select. (visible only in FieldCare)

Navigation Expert → System → Management → Download select.

Write permission Operators/Service engineers/Expert

Description Selection of data packages for up/download function in Fieldcare and PDM.

Prerequisite DIP switch set to "SW" and "Damping" set to "on". If you download using the factory setting

"Configuration copy", all parameters required for a measurement will be downloaded. The
functionality of the "Electronics replace" setting is reserved for Endress+Hauser Service and
can be accessed only if the correct device access code is entered.

Options • Configuration copy: This option overwrites general configuration parameters with the

exception of the serial number, order number, calibration, pos. zero adjust, application
and day information.

• Device replacement: This option overwrites general configuration parameters with the
exception of the serial number, order number, calibration and position adjustment.

• Electronics replace: This option overwrites general configuration parameters.

Factory setting Configuration copy

Endress+Hauser 63

Diagnostics and troubleshooting Waterpilot FMX21

10 Diagnostics and troubleshooting

10.1 Troubleshooting

General errors

Error Possible cause Solution

Device is not responding. Supply voltage does not match the

specification on the nameplate.

Supply voltage has incorrect polarity. Reverse polarity of supply voltage.

Connecting cables are not in contact
with the terminals.

Output current < 3.6 mA Signal line is not wired correctly.

Electronics unit is defective.

Device measures incorrectly. Configuration error Check and correct parameter

HART communication is not
working.

Communication resistor missing or
incorrectly installed.

Commubox is not properly connected. Connect Commubox correctly .

Commubox is not set to "HART". Set Commubox selector switch to

Apply correct voltage.

Check the connection of the cables
and correct if necessary.

Check wiring.

configuration (see below).

Install the communication resistor
(250 Ω) correctly.

"HART".

10.2 Diagnostic events

10.2.1 Diagnostic message

Faults detected by the self-monitoring system of the measuring device are displayed as a
diagnostic message in alternation with the measured value display.

Status signals

The table →  65 lists the messages that may occur. The ALARM STATUS parameter
shows the message with the highest priority. The device has four different status
information codes according to NE107:

"Failure"

A device error has occurred. The measured value is no longer valid.

A0013956

"Maintenance required"

Maintenance is required. The measured value remains valid.

A0013957

"Function check"

The device is in service mode (e.g. during a simulation).

A0013959

"Out of specification"

The device is being operated:

• Outside its technical specifications (e.g. during warm-up or cleaning).

A0013958

• Outside the parameter configuration undertaken by the user (e.g. level outside of configured span)

Diagnostic event and event text

The fault can be identified by means of the diagnostic event.

64 Endress+Hauser

Waterpilot FMX21 Diagnostics and troubleshooting

The event text helps you by providing information on the fault.

Diagnostic event

Status signal Event number Event text

↓ ↓ ↓

Example

A0013958

841 Sensor range

3-digit number

If two or more diagnostic events are pending simultaneously, only the diagnostic message
with the highest priority is shown.

Other diagnostic messages that are pending can be viewed in the Diagnostic list
submenu .

Past diagnostic messages that are no longer pending are shown in the Event logbook
submenu .

10.2.2 List of diagnostic events

General messages

Diagnostic event Reason Corrective measure

Code Description

0 No error - -

"F" messages

Diagnostic event Reason Corrective measure

Code Description

F002 Sensor unknown Sensor does not suit the device (electronic sensor

nameplate).

F062 Sensor conn. • Faulty sensor.

• Electromagnetic effects are greater than
specifications in the technical data. This message
appears for a short time only.

F081 Initialization • Faulty sensor.

• Electromagnetic effects are greater than
specifications in the technical data. This message
appears for a short time only.

F083 Memory content • Faulty sensor.

• Electromagnetic effects outside the permitted
range. This message appears for a short time only.

F140 Working range P • Overpressure and low pressure present.

• Electromagnetic effects outside the permitted
range.

• Faulty sensor.

F261 Electronic module • Main electronics defective.

• Fault in the main electronics.

F282 Memory • Fault in the main electronics.

• Main electronics defective.

Contact Endress+Hauser
Service

• Check the sensor module
cable

• Contact Endress+Hauser
Service

• Check sensor cable

• Contact Endress+Hauser
Service

• Restart the device

• Contact Endress+Hauser
Service

• Check the process pressure

• Check sensor range

Restart the device

Restart the device

Endress+Hauser 65

Diagnostics and troubleshooting Waterpilot FMX21

Diagnostic event Reason Corrective measure

Code Description

F283 Memory content • Main electronics defective.

• Electromagnetic effects are greater than
specifications in the technical data.

• The supply voltage is disconnected when writing.

• An error occurred when writing.

F411 Up-/download • File is defective.

• During the download, the data are not correctly
transmitted to the processor, e.g. because of open
cable connections, spikes (ripple) on the supply
voltage or electromagnetic effects.

F510 Linearization The linearization table is being edited. • Conclude entries

F511 Linearization The linearization table consists of less than 2 points. • Table too small

F512 Linearization The linearization table is not monotonic increasing or

decreasing.

F841 Sensor range • Overpressure or low pressure present.

• Faulty sensor.

F882 Input signal External measured value is not received or displays a

failure status.

Perform a reset

• Repeat download

• Use other file

• Perform a reset

• Select "linear"

• Correct table

• Activate table

• Table not monotonic

• Correct table

• Activate table

• Check the pressure value

• Contact Endress+Hauser
Service

• Check the bus

• Check source device

• Check the setting

"M" messages

Diagnostic event Reason Corrective measure

Code Description

M002 Sens. unknown Sensor does not suit the device (electronic sensor

nameplate). Device continues measuring.

M283 Memory

content

M431 Adjustment The calibration carried out would result in values that

M434 Scaling • Values for calibration (e.g. lower-range value and

M438 Data set • The supply voltage is disconnected when writing.

M882 Input signal External measured value displays a warning status. • Check the bus

• Cause as indicated for F283.

• Correct measurement can continue as long as you
do not need the peakhold indicator function.

exceed or fall below the nominal range of the sensor.

upper-range value) are too close together.

• Lower-range value and/or upper-range value exceed
or fall below the range limits of the sensor.

• The sensor was replaced and the customer-specific
configuration does not suit the sensor module.

• Unsuitable download carried out.

• An error occurred when writing.

Contact Endress+Hauser
Service

Perform a reset

• Check the measuring
range

• Check position
adjustment

• Check the setting

• Check the measuring
range

• Check the setting

• Contact Endress+Hauser
Service

• Check the setting

• Restart the device

• Check the source device

• Check the setting

66 Endress+Hauser

Waterpilot FMX21 Diagnostics and troubleshooting

"C" messages

Diagnostic event Reason Corrective measure

Code Description

C412 Backup in prog. Downloading. Wait for download to

complete.

C482 Simul. output Simulation of the current output is switched on, i.e. the

device is not measuring at present.

C484 Error simul. Simulation of an error status is switched on, i.e. the

device is not measuring at present.

C485 Measure simul. Simulation is switched on, i.e. the device is not

measuring at present.

C824 Process pressure • Overpressure or low pressure present.

• Electromagnetic effects outside the permitted range.
This message appears for a short time only.

End the simulation

End the simulation

End the simulation

• Check the pressure
value

• Restart the device

• Perform a reset

"S" messages

Diagnostic event Reason Corrective measure

Code Description

S110 Operational

range T

S140 Working range P

LP/HP

S822 Process temp.

LP/HP

S841 Sensor range • Overpressure or low pressure present.

S971 Adjustment • The current is outside the permitted range from 3.8

• High temperature or low temperature present.

• Electromagnetic effects outside the permitted range.

• Faulty sensor.

• Overpressure or low pressure present.

• Electromagnetic effects outside the permitted range.

• Faulty sensor.

• The temperature measured in the sensor is higher
than the upper nominal temperature of the sensor.

• The temperature measured in the sensor is lower
than the lower nominal temperature of the sensor.

• Faulty sensor.

to 20.5 mA.

• The present pressure value is outside the configured
measuring range (but within the sensor module
range, if applicable).

• The calibration carried out would result in values
that exceed or fall below the nominal range of the
sensor.

• Check process
temperature

• Check the temperature
range

• Check the process
pressure

• Check sensor range

• Check temperature

• Check the setting

• Check the pressure value

• Contact Endress+Hauser
Service

• Check the pressure value

• Check the measuring
range

• Check the setting

10.3 Troubleshooting specific to Waterpilot FMX21 with optional Pt100

Error description Reason Corrective action

No measuring signal 4 to 20 mA cable not connected

correctly

No power supplied via the 4 to 20 mA
cable

Supply voltage too low (at least 10.5 V
DC)

Endress+Hauser 67

Connect device as per.

Check current loop.

• Check supply voltage.

• Overall resistance greater than
max. load resistance

Diagnostics and troubleshooting Waterpilot FMX21

Error description Reason Corrective action

Waterpilot defective Replace the Waterpilot.

Temperature measured value
is inaccurate/incorrect (only
for Waterpilot FMX21 with
Pt100)

Pt100 connected in 2-wire circuit, cable
resistance was not compensated for

• Compensate the cable resistance.

• Connect Pt100 as 3-wire or 4-wire
circuit.

10.4 Troubleshooting specific to TMT182 temperature head transmitter

Error description Reason Corrective action

No measuring signal 4 to 20 mA cable not connected

correctly

No power supplied via the 4 to 20 mA
cable

Supply voltage too low (at least 10.5 V
DC)

Error current ≤ 3.6 mA or ≥ 21mAPt100 not connected correctly Connect device as per.

4 to 20 mA cable not connected
correctly

Pt100 resistance thermometer
defective

Temperature head transmitter
defective

Measured value is inaccurate/
incorrect

Pt100 connected in 2-wire circuit,
cable resistance was not compensated
for

Connect device as per.

Check current loop.

• Check supply voltage.

• Overall resistance greater than
max. load resistance

Connect device as per.

Replace the Waterpilot.

Replace the temperature head
transmitter.

• Compensate the cable
resistance.

• Connect Pt100 as 3-wire or 4­wire circuit.

10.5 Response of output to errors

The behavior of the current output in case of fault is defined by the following
parameters:

• "Alarm behav. P (050)"

• "Output fail mode (190)"

• "High alarm curr. (052)"

68 Endress+Hauser

Waterpilot FMX21 Diagnostics and troubleshooting

10.6 Firmware history

Date Firmware version Modifications Documentation

05.2009 01.00.zz Original firmware.

Compatible with:

• FieldCare from version 2.02.00

• Field Communicator DXR375 with Device Rev.: 1, DD Rev.: 1

BA00380P/00/EN/08.09

Endress+Hauser 69

Maintenance Waterpilot FMX21

11 Maintenance

No special maintenance work is required.

Terminal box: Keep the pressure compensation tube and GORE-TEX® filter free from
contamination.

11.1 Exterior cleaning

Please note the following points when cleaning the device:

• The cleaning agents used should not corrode the surface and the seals.

• Mechanical damage to the process isolating diaphragm, e.g. due to sharp objects, must
be avoided.

• Only clean the terminal box with water or with a cloth dampened with very diluted
ethanol.

70 Endress+Hauser

Waterpilot FMX21 Repairs

12 Repairs

12.1 General notes

12.1.1 Repair concept

Repairs are not possible.

12.1.2 Replacing a device

Once a complete device has been replaced, the parameters can be transferred back into the
device using FieldCare:

Prerequisite: The configuration of the old device was saved previously to the computer
using FieldCare.

You can continue to measure without performing a new calibration.

12.2 Spare parts

• Some replaceable measuring device components are identified by means of a spare part
nameplate. This contains information about the spare part.

• All the spare parts for the measuring device along with the order code are listed In the
W@M Device Viewer (www.endress.com/deviceviewer) and can be ordered. If available,
users can also download the associated Installation Instructions.

Measuring device serial number:

• Located on the device and spare part nameplate.

• Can be read out via the "Serial number" parameter in the "Instrument info" submenu.

12.3 Return

The measuring device must be returned in the event of a factory calibration, or if the
wrong device has been ordered or delivered.

As an ISO-certified company and due to legal requirements,

Endress+Hauser is required to follow certain procedures when handling returned products
that have been in contact with a medium. To ensure swift, safe and professional device
returns, please read the return procedures and conditions on the Endress+Hauser website
at www.services.endress.com/return-material

Select country.

‣

 The web site of the responsible sales office opens with all of the relevant

information relating to returns.

1. If the desired country is not listed:
Click on the "Choose your location" link.
 An overview of Endress+Hauser sales offices and representatives opens.

2. Contact your Endress+Hauser sales office or representative.

12.4 Disposal

When disposing, separate and recycle the device components based on the materials.

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Overview of the operating menu Waterpilot FMX21

13 Overview of the operating menu

Depending on the parameter configuration, not all submenus and parameters are
available. Information on this can be found in the parameter description under
"Prerequisite".

Setup Description

Mode →  83

Press. eng. unit →  85

Corrected press. →  87

Pos. zero adjust (relative pressure sensor) →  84

Calib. offset (absolute pressure sensor) →  84

Empty calib. ("Level" measuring mode and "Calibration mode" = wet) →  89

Full calib. ("Level" measuring mode and "Calibration mode" = wet") →  90

Set LRV ("Pressure" measuring mode) →  86

Set URV ("Pressure" measuring mode) →  86

Damping →  84

Level before Lin ("Level" measuring mode) →  92

Press after damping →  87

Setup → Extended setup Description

Code definition →  80

Device tag →  81

Operator code →  80

Setup → Extended setup → Level

("Level" measuring mode)

Level selection →  88

Output unit →  88

Height unit →  88

Calibration mode →  89

Empty calib. →  89

Empty pressure →  89

Empty height →  90

Full calib. →  90

Full pressure →  90

Full height →  91

Adjust density →  91

Process density →  92

Level before lin →  92

Description

Setup → Extended setup → Linearization Description

Lin. mode →  93

Unit after lin. →  93

Line-numb: →  93

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Waterpilot FMX21 Overview of the operating menu

Setup → Extended setup → Linearization Description

X-val →  94

Y-val →  94

Edit table →  94

Tank description →  95

Tank content →  95

Setup → Extended setup → Current output Description

Alarm behav. P →  98

Output fail mode →  98

Max. alarm curr. →  98

Set min. current →  99

Output current →  98

Get LRV (only "Pressure") →  99

Set LRV →  99

Get URV (only "Pressure") →  99

Set URV →  100

Diagnosis Description

Diagnostic code →  112

Last diag. code →  112

Min. meas. press. →  112

Max. meas. press. →  112

Diagnosis → Diagnostics List Description

Diagnostic 1 →  114

Diagnostic 2 →  114

Diagnostic 3 →  114

Diagnostics 4 →  114

Diagnostics 5 →  114

Diagnostics 6 →  114

Diagnostics 7 →  114

Diagnostics 8 →  114

Diagnostics 9 →  114

Diagnostics 10 →  114

Diagnosis → Event logbook Description

Last diag. 1 →  115

Last diag. 2 →  115

Last diag. 3 →  115

Last diag. 4 →  115

Last diag. 5 →  115

Last diag. 6 →  115

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Overview of the operating menu Waterpilot FMX21

Diagnosis → Event logbook Description

Last diag. 7 →  115

Last diag. 8 →  115

Last diag. 9 →  115

Last diag. 10 →  115

Diagnosis → Instrument Info Description

Firmware Version →  81

Serial number →  81

Ext. order code →  81

Order Identifier →  82

Cust. tag number →  81

Device tag →  81

ENP version →  82

Config. counter →  113

LRL sensor →  96

URL sensor →  96

Manufacturer ID →  104

Device type →  104

Device revision →  104

Diagnosis → Measured values Description

Level before lin →  92

Tank content →  95

Pressure measured →  86

Sensor pressure →  86

Corrected press. →  87

Press after damping →  87

Sensor temp. →  85

Diagnosis → Simulation Description

Simulation mode →  116

Sim. pressure →  116

Sim. level →  116

Sim. tank cont. →  117

Sim. current →  117

Sim. alarm/warning →  117

Diagnosis → Enter reset code Description

Enter reset code →  83

74 Endress+Hauser

Waterpilot FMX21 Overview of the operating menu

13.1 Overview of parameters in the "Expert" menu

The following table lists all of the parameters that can be included in the "Expert"
menu. The page reference indicates where a description of the parameter can be
found in the manual.

Depending on the device version and the parameter configuration, not all submenus
and parameters are available in every device. Information on this can be found in the
parameter description under "Prerequisite".

Expert → System Description

Code definition →  80

Operator code →  80

Expert → System→ Instrument Info Description

Cust. tag number →  81

Device tag →  81

Serial number →  81

Firmware Version →  81

Ext. order code →  81

Order Identifier →  82

ENP version →  82

Electr.Serial No →  82

Sensor serial no. →  82

Expert → System→ Administration Description

Enter reset code →  83

Expert → Measurement Description

Mode →  83

Expert → Measurement→ Basic Setup Description

Pos. zero adjust →  84

Calib. Offset →  84

Damping →  84

Press. eng. unit →  85

Temp. Eng. Unit →  85

Sensor temp. →  85

Expert → Measurement→ Meas. Description

Set LRV →  86

Set URV →  86

Pressure measured →  86

Sensor pressure →  86

Corrected press. →  87

Press after damping →  87

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Overview of the operating menu Waterpilot FMX21

Expert → Measurement→ Level Description

Level selection →  88

Output unit →  88

Height unit →  88

Calibration mode →  89

→  89

Empty calib.

Empty pressure →  89

Empty height →  90

Full calib. →  90

Full pressure →  90

Full height →  91

Density unit →  91

Adjust density →  91

Process density →  92

Level before lin. →  92

Expert → Measurement→ Linearization Description

Lin. mode →  93

Unit after lin. →  93

Line-numb: →  93

X-val →  94

Y-val →  94

Edit table →  94

Tank description →  95

Tank content →  95

Expert → Measurement→ Sensor limits Description

Lower range limit →  96

URL sensor →  96

Expert → Measurement→ Sensor trim Description

Lo trim measured →  97

Hi trim measured →  97

Lo Trim Sensor →  97

Hi Trim Sensor →  97

Expert → Output→ Current output Description

Output current →  98

Alarm behav. P →  98

Output fail mode →  98

Max. alarm curr. →  98

Set min. current →  99

76 Endress+Hauser

Waterpilot FMX21 Overview of the operating menu

Expert → Output→ Current output Description

Get LRV
("Pressure" only)

Set LRV →  99

Get URV
("Pressure" only)

Set URV →  100

Start-up current →  100

Curr. Trim 4 mA →  100

Curr. Trim 20 mA →  101

Offset Trim 4 mA →  101

Offset Trim 20 mA →  101

Expert → Communication→ HART Config Description

Burst Mode →  102

Burst Option →  102

Current Mode →  102

Bus Address →  102

Preamble Number →  103

→  99

→  99

Expert → Communication→ HART Info Description

Device type →  104

Device revision →  104

Manufacturer ID →  104

HART version →  104

Description →  104

HART Message →  104

HART Date →  105

Expert → Communication→ HART Output Description

Primary value is →  106

Primary value →  106

Secondary val. is →  106

Secondary value →  106

Third value is →  107

Third value →  107

4th value is →  107

4th value →  108

Expert → Communication→ HART Input Description

HART input val. →  109

HART input stat. →  109

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Overview of the operating menu Waterpilot FMX21

Expert → Communication→ HART Input Description

HART input unit →  109

HART input form. →  109

Expert → Application Description

Electr. Delta P →  111

Fixed ext. value →  111

Auto dens. corr. →  111

Expert → Diagnosis Description

Diagnostic code →  112

Last diag. code →  112

Reset Logbook →  112

Min. meas. press. →  112

Max. meas. press. →  112

Reset Peakhold →  113

Operating hours →  113

Config. counter →  113

Expert → Diagnosis→ Diagnostics List Description

Diagnostic 1 →  114

Diagnostic 2 →  114

Diagnostic 3 →  114

Diagnostics 4 →  114

Diagnostics 5 →  114

Diagnostics 6 →  114

Diagnostics 7 →  114

Diagnostics 8 →  114

Diagnostics 9 →  114

Diagnostics 10 →  114

Expert → Diagnosis→ Event logbook Description

Last diag. 1 →  115

Last diag. 2 →  115

Last diag. 3 →  115

Last diag. 4 →  115

Last diag. 5 →  115

Last diag. 6 →  115

Last diag. 7 →  115

Last diag. 8 →  115

Last diag. 9 →  115

Last diag. 10 →  115

78 Endress+Hauser

Waterpilot FMX21 Overview of the operating menu

Expert → Diagnosis→ Simulation Description

Simulation mode →  116

Sim. pressure →  116

Sim. level →  116

Sim. tank cont. →  117

Sim. current →  117

Sim. alarm/warning →  117

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Description of device parameters Waterpilot FMX21

14 Description of device parameters

14.1 Expert → System

Operator code

Write permission Operators/Service engineers/Expert

Description Use this function to enter a code to lock or unlock operation.

User entry •

Note The release code is "0" in the order configuration. Another release code can be defined in

Factory setting 0

Code definition

Write permission Operators/Service engineers/Expert

Description Use this function to enter a release code with which the device can be unlocked.

Options A number from 0 to 9999

Factory setting 0

To lock: Enter a number ¹ the release code (value range: 1 to 9999).

• To unlock: Enter the release code.

the "Code definition" parameter. If the user has forgotten the release code, the release code
can be visible by entering the number "5864".

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Waterpilot FMX21 Description of device parameters

14.2 Expert → System → Instrument info

Cust. tag number

Write permission Operators/Service engineers/Expert

Description Enter the device tag e.g. TAG number (max. 8 alphanumeric characters).

Factory setting No entry or according to order specifications

Device tag

Navigation Setup → Extended setup → Device tag

Write permission Operators/Service engineers/Expert

Description Enter the device tag e.g. TAG number (max. 32 alphanumeric characters).

Factory setting No entry or according to order specifications

Serial number

Write permission Parameter is read only. Only Endress+Hauser Service has write permission.

Description Displays the serial number of the device (11 alphanumeric characters).

Firmware Version

Write permission No write permissions. Parameter is read only.

Description Displays the firmware version.

Ext. order code

Write permission Parameter is read only. Only Endress+Hauser Service has write permission.

Description Displays extended order number.

Factory setting According to order specifications

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Description of device parameters Waterpilot FMX21

Order identifier

Navigation Diagnosis → Instrument info → Order identifier

Write permission Parameter is read only. Only Endress+Hauser Service has write permission.

Description Displays the order identifier.

Factory setting According to order specifications

ENP version

Write permission Operators/Service engineers/Expert

Description Displays the ENP version

(ENP = electronic nameplate)

Electr.serial no

Write permission No write permissions. Parameter is read only.

Description Displays the serial number of the main electronics (11 alphanumeric characters).

Sensor serial no.

Write permission No write permissions. Parameter is read only.

Description Displays the serial number of the main electronics (11 alphanumeric characters).

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Waterpilot FMX21 Description of device parameters

14.3 Expert → System → Management

Enter reset code

Write permission Operators/Service engineers/Expert

Description Reset parameters completely or partially to the factory values or order configuration by

entering a reset code, see "Resetting to factory settings (reset)" section.

Factory setting 0

14.4 Expert → Measurement → Measuring mode

Measuring mode

WARNING

L

Changing the measuring mode affects the span (URV)

This situation can result in product overflow.

If the measuring mode is changed, the setting for the span (URV) must be checked in

‣

the "Setup" operating menu and readjusted if necessary.

Write permission Operators/Service engineers/Expert

Description Select the measuring mode. The operating menu is structured differently depending on the

measuring mode selected.

Options • Meas.

• Level

Factory setting Pressure or according to order specifications

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Description of device parameters Waterpilot FMX21

14.5 Expert → Measurement → Basic setup

Pos. zero adjust

Write permission Operators/Service engineers/Expert

Description Position adjustment – the pressure difference between zero (set point) and the measured

pressure need not be known.

Example • Measured value = 2.2 mbar (0.033 psi)

• You correct the measured value via the "Pos. zero adjust" parameter with the "Confirm"
option. i.e. This means that you are assigning the value 0.0 to the pressure present.

• Measured value (after position adjustment) = 0.0 mbar

• The current value is also corrected.

Options • Confirm

• Cancel

Factory setting Cancel

Calib. offset

Write permission Service engineers/Expert

Description Position adjustment – the pressure difference between the set point and the measured

pressure must be known.

Example • Measured value = 982.2 mbar (14.73 psi)

• You use the "Calib. offset" parameter to correct the measured value with the value
entered, e.g. 2.2 mbar (0.033 psi). i.e. This means that you are assigning the value

980.0 (14.7 psi) to the pressure present.

• Measured value (after pos. zero adjust) = 980.0 mbar (14.7 psi)

• The current value is also corrected.

Factory setting 0.0

Damping

Write permission Operators/Service engineers/Expert

(if the "Damping" DIP switch is set to "on")

Description

Input range 0.0 to 999.0 s

Factory setting 2.0 sec. or according to order specifications

84 Endress+Hauser

Enter damping time (time constant t).
The damping affects the speed at which the measured value reacts to changes in pressure.

Waterpilot FMX21 Description of device parameters

Press. eng. unit

Write permission Operators/Service engineers/Expert

Description Select the pressure engineering unit. If a new pressure engineering unit is selected, all

pressure-specific parameters are converted and displayed with the new unit.

Options • mbar, bar

• mmH2O, mH2O, inH2O

• ftH2O

• Pa, kPa, MPa

• psi

• mmHg, inHg

• kgf/cm

2

Factory setting mbar or bar depending on the nominal measuring range of the sensor module, or as per

order specifications

Temp. eng. unit

Write permission Service engineers/Expert

Description Select the unit for the temperature measured values.

Options • °C

• °F

• K

Note The setting affects the unit for the "Sensor temp." parameter.

Factory setting °C

Sensor temp.

Write permission No write permissions. Parameter is read only.

Description Displays the temperature currently measured in the sensor module. This can deviate from

the process temperature.

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Description of device parameters Waterpilot FMX21

14.6 Expert → Measurement → Pressure

Set LRV

Write permission Operators/Service engineers/Expert

Description Set the pressure value, level or content for the lower current value (4 mA).

Factory setting • 0.0 % in Level measuring mode

• 0.0 mbar/bar or in accordance with ordering information in Pressure measuring mode

Set URV

Write permission Operators/Service engineers/Expert

Description Set the pressure value, level or content for the upper current value (20 mA).

Factory setting • 100.0 % in Level measuring mode

• URL Sensor or according to ordering information in Pressure measuring mode

Meas. pressure

Write permission No write permissions. Parameter is read only.

Description Displays the measured pressure after sensor trim, position adjustment and damping.

Meas.
pressure

→

Meas. →

Pressure simulation value →

↓ ↑ ↓

Sensor → Sensor trim → Position adjustment → Damping → Electr. Delta P →P→ Level →I→ Current output

↓ ↓ ↓ ↓

Sensor pressure Corrected

press.

Corrected
Damping

Sensor pressure

Write permission No write permissions. Parameter is read only.

Description Displays the measured pressure before the sensor trim.

86 Endress+Hauser

Waterpilot FMX21 Description of device parameters

Corrected press.

Write permission No write permissions. Parameter is read only.

Description Displays the measured pressure after sensor trim and position adjustment.

Pressure after damping

Write permission No write permissions. Parameter is read only.

Description Displays the measured pressure after sensor trim, position adjustment and damping.

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Description of device parameters Waterpilot FMX21

14.7 Expert → Measurement → Level

Level selection

Write permission Operators/Service engineers/Expert

Description Select the method for calculating the level

Options • In pressure

If this option is selected, specify two pressure/level value pairs. The level value is
displayed directly in the unit that you select via the "Output unit" parameter.

• In height
If this option is selected, specify two height/level value pairs. From the measured
pressure, the device first calculates the height using the density. Along with the two
value pairs specified, this information is then used to calculate the level in the "Output
unit" selected.

Factory setting In pressure

Output unit

Description Select the unit for the measured value display for the level before linearization.

Note The selected unit is used only to describe the measured value i.e. when a new output unit

is selected, the measured value is not converted.

Example • Current measured value: 0.3 ft

• New output unit: m

• New measured value: 0.3 m

Options • %

• mm, cm, dm, m

• ft, inch

• m3, in

3

• l, hl

3

• ft

• gal, Igal

• kg, t

• lb

Factory setting %

Height unit

Write permission Operators/Service engineers/Expert

88 Endress+Hauser

Waterpilot FMX21 Description of device parameters

Description Select the height unit. The measured pressure is converted to the selected height unit

using the "Adjust Density" parameter.

Prerequisite "Level selection" = "In height"

Options • mm

• m

• in

• ft

Factory setting m

Calibration mode

Write permission Operators/Service engineers/Expert

Description Select the calibration mode.

Options • Wet

Wet calibration takes place by filling and emptying the vessel. In the case of two
different levels, the level, volume, mass or percentage value entered is assigned to the
pressure measured at this point in time ("Empty calib." and "Full calib." parameters).

• Dry
Dry calibration is a theoretical calibration. For this calibration, you specify two pressure­level value pairs or height-level value pairs via the following parameters: "Empty calib.",
"Empty pressure", "Empty height", "Full calib.", "Full pressure", "Full height".

Factory setting Wet

Empty calib.

Write permission Operators/Service engineers/Expert

Description Enter the output value for the lower calibration point (vessel is empty). The unit defined in

"Output unit" must be used here.

Note • For wet calibration, the level (e.g. empty or partially filled vessel) must actually be

present. The associated pressure is then automatically recorded by the device.

• In the case of dry calibration, the level (vessel empty) does not have to be available. For
the "In pressure" level selection, the associated pressure must be entered in the "Empty
pressure" parameter. The associated height must be entered in the "Empty height"
parameter for the "In height" level selection.

Factory setting 0.0

Empty pressure

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Description of device parameters Waterpilot FMX21

Write permission Operators/Service engineers/Expert

Description Enter the pressure value for the lower calibration point (vessel empty). See also "Empty

calib.".

Prerequisite • "Level selection" = In pressure

• "Calibration mode" = Dry -> entry

• "Calibration mode" = Wet -> display

Factory setting 0.0

Empty height

Write permission Operators/Service engineers/Expert

Description Enter the height value for the lower calibration point (vessel empty). The unit is selected

via the "Height unit" parameter.

Prerequisite • "Level selection" = "In height"

• "Calibration mode" = Dry -> entry

• "Calibration mode" = Wet -> display

Factory setting 0.0

Full calib.

Write permission Operators/Service engineers/Expert

Description Enter the output value for the upper calibration point (vessel full). The unit defined in

"Output unit" must be used here.

Note • For wet calibration, the level (e.g. empty or partially filled vessel) must actually be

present. The associated pressure is then automatically recorded by the device.

• In the case of dry calibration, the level (vessel full) does not have to be available. For the
"In pressure" level selection, the associated pressure must be entered in the "Full pressure"
parameter. The associated height has to be entered in the "Full height" parameter for the
"In height" level selection.

Factory setting 100.0

Full pressure

Write permission Operators/Service engineers/Expert

Description Enter the pressure value for the upper calibration point (vessel full). See also "Full calib.".

90 Endress+Hauser

Waterpilot FMX21 Description of device parameters

Prerequisite • "Level selection" = In pressure

• "Calibration mode" = Dry -> entry

• "Calibration mode" = Wet -> display

Factory setting URL of the sensor module

Full height

Write permission Operators/Service engineers/Expert

Description Enter the height value for the upper calibration point (vessel full). The unit is selected via

the "Height unit" parameter.

Prerequisite • "Level selection" = "In height"

• "Calibration mode" = Dry -> entry

• "Calibration mode" = Wet -> display

Factory setting URL is converted to a level unit

Density unit

Write permission Service engineers/Expert

Description Displays the density unit. The measured pressure is converted to a height using the "Height

unit", "Adjust density" and "Process density" parameters.

Options • g/cm

• kg/m

• kg/dm

• lb/in

• lb/ft

Factory setting g/cm

3

3

3

3

3

3

Adjust density

Write permission Operators/Service engineers/Expert

Description Enter the density of the medium used to perform the calibration. The measured pressure is

converted to a height using the "Height unit" and "Adjust density" parameters.
Input: Auto dens. corr. = Off
Display: Auto dens. corr. ≠ Off

Factory setting 1.0

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Description of device parameters Waterpilot FMX21

Process density

Write permission Operators/Service engineers/Expert

Description Enter a new density value for density correction. The calibration was carried out with the

medium water, for example. Now the vessel is to be used for another medium with
another density. The calibration is corrected appropriately by entering the new density
value in the "Process Density" parameter.
Input: Auto dens. corr. = Off
Display: Auto dens. corr. ≠ Off

Note If, after completing a wet calibration, you change to dry calibration using the "Calibration

mode" parameter, the density for the "Adjust density" and "Process density" parameters
must be entered correctly before changing the calibration mode.

Factory setting 1.0

Level before lin.

Write permission No write permissions. Parameter is read only.

Description Displays the level value prior to linearization.

92 Endress+Hauser

Waterpilot FMX21 Description of device parameters

14.8 Expert → Measurement → Linearization

Lin. mode

Write permission Operators/Service engineers/Expert

Description Select the linearization mode.

Options • Linear

The level is output without being converted beforehand. "Level before lin" is output.

• Erase table
The existing linearization table is deleted.

• Manual entry (sets the table to edit mode, an alarm is output):
The value pairs of the table (X-value and Y-value) are entered manually.

• Semi-automatic entry (sets the table to edit mode, an alarm is output):
The vessel is emptied or filled in stages in this entry mode. The device automatically
records the level value (X-value). The associated volume, mass or % value is entered
manually (Y-value).

• Activate table
The table entered is activated and checked with this option. The device shows the level
after linearization.

Factory setting Linear

Unit after lin.

Write permission Operators/Service engineers/Expert

Description Select volume unit, mass, height or % (unit of the Y-value).

Options • %

• cm, dm, m, mm

• hl

• in3, ft3, m3,

• l

• in, ft

• kg, t

• lb

• gal

• Igal

Factory setting %

Line-numb

Write permission Operators/Service engineers/Expert

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Description of device parameters Waterpilot FMX21

Description Enter the number of the current point in the table. Subsequent entries in "X-val" and "Y-val"

relate to this point.

Input range 1...32

X-val

Write permission Operators/Service engineers/Expert

Description Enter the X-value (level before linearization) for the specific point in the table and confirm.

Note • If "Lin. mode" = "Manual", the level value must be entered.

• If "Lin. mode" = "Semiautomatic", the level value is displayed and must be confirmed by
entering the paired Y-value.

Y-value

Ceramic

Write permission Operators/Service engineers/Expert

Description Enter the Y-value (value after linearization) for the specific point in the table. The unit is

determined by "Unit after lin.".

Note The linearization table must be monotonic (increasing or decreasing).

Edit table

Write permission Operators/Service engineers/Expert

Description Select the function for entering the table.

Options • Next point: Enter the next point.

• Current point: Stay on the current point to correct a mistake, for example.

• Last point: Skip back to the previous point to correct a mistake, for example.

• Insert point: Insert an additional point (see example below).

• Delete point: Delete the current point (see example below).

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Waterpilot FMX21 Description of device parameters

Example Add point, in this case between the 4th and 5th point for example

• Select point 5 via the "Line-numb" parameter.

• Select the "Insert point" option via the "Edit table" parameter.

• Point 5 is displayed for the "Line-numb" parameter. Enter new values for the "X-val" and
"Y-val" parameters.

Delete point, in this case the 5th point for example

• Select point 5 via the "Line-numb" parameter.

• Select the "Delete point" option via the "Edit table" parameter.

• The 5th point is deleted. All of the following points are pushed up one number i.e.
following deletion, the 6th point becomes Point 5.

Factory setting Current point

Tank description

Write permission Operators/Service engineers/Expert

Description Enter tank description (max. 32 alphanumeric characters).

Tank content

Write permission Operators/Service engineers/Expert

Description Displays the level value after linearization.

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Description of device parameters Waterpilot FMX21

14.9 Expert → Measurement → Sensor limits

LRL sensor

Write permission No write permissions. Parameter is read only.

Description Displays the lower-range limit of the sensor.

URL sensor

Write permission No write permissions. Parameter is read only.

Description Displays the upper-range limit of the sensor.

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Waterpilot FMX21 Description of device parameters

14.10 Expert → Measurement → Sensor trim

Lo trim measured

Write permission No write permissions. Parameter is read only.

Description Displays the reference pressure present to be accepted for the lower calibration point.

Hi trim measured

Write permission No write permissions. Parameter is read only.

Description Displays the reference pressure present to be accepted for the upper calibration point.

Lo sensor trim

Write permission No write permissions. Parameter is read only.

Description Sensor module recalibration by entering a target pressure while simultaneously and

automatically accepting a reference pressure present for the lower calibration point.

Hi sensor trim

Write permission No write permissions. Parameter is read only.

Description Sensor module recalibration by entering a target pressure while simultaneously and

automatically accepting a reference pressure present for the upper calibration point.

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Description of device parameters Waterpilot FMX21

14.11 Expert → Output → Current output

Output current

Write permission Operators/Service engineers/Expert

Description Displays the current current value.

Alarm behav. P

Write permission Operators/Service engineers/Expert

Description Behavior of current output if sensor module limits are are exceeded or not reached.

Options • Warning

The device continues to measure. An error message is displayed.

• Alarm
The output signal assumes a value that can be specified by the "Output fail mode"
function.

Factory setting Warning

Output fail mode

Write permission Operators/Service engineers/Expert

Description Select Output fail mode. In the event of an alarm, the current assumes the current value

specified with this parameter.

Options • Max: can be set from 21 to 23 mA, see also "High alarm curr."

• Hold: last measured value is held.

• Min: 3.6 mA

Factory setting Max (22 mA)

High alarm curr.

Write permission Operators/Service engineers/Expert

Description Enter the current value for maximum alarm current. See also "Output fail mode".

Input range 21 to 23 mA

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Waterpilot FMX21 Description of device parameters

Factory setting 22 mA

Set min. current

Write permission Operators/Service engineers/Expert

Description Enter lower current limit.

Some switching units accept no current smaller than 4.0 mA.

Options • 3.8 mA

• 4.0 mA

Factory setting 3.8 mA

Get LRV

Write permission Operators/Service engineers/Expert

Description Set the lower-range value – reference pressure is present at the device. The pressure for

the lower current value (4 mA) is present at the device. Use the "Confirm" option to assign
the lower current value to the applied pressure value.

Prerequisite: Pressure measuring mode

Options • Cancel

• Confirm

Factory setting Cancel

Set LRV

Write permission Operators/Service engineers/Expert

Description Set the pressure value, level or content for the lower current value (4 mA).

Factory setting • 0.0 % in Level measuring mode

• 0.0 mbar/bar or in accordance with ordering information in Pressure measuring mode

Get URV (pressure measuring mode)

Write permission Operators/Service engineers/Expert

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Description of device parameters Waterpilot FMX21

Description Set the upper-range value – reference pressure is present at the device. The pressure for

the upper current value (20 mA) is present at the device. Use the "Confirm" option to assign
the applied pressure value to the upper current value.

Prerequisite: Pressure measuring mode

Options • Cancel

• Confirm

Factory setting Cancel

Set URV

Navigation Setup → Set URV

Setup → Extended setup → Current output → Set URV

Write permission Operators/Service engineers/Expert

Description Set the pressure value, level or content for the upper current value (20 mA).

Factory setting • 100.0 % in Level measuring mode

• URL Sensor or according to ordering information in Pressure measuring mode

Start-up current

Write permission Service engineers/Expert

Description Entry of the start current. This setting also applies in HART multidrop mode.

Options • 12 mA

• Max alarm (22 mA, cannot be set)

Factory setting 12 mA

Curr. trim 4mA

Write permission Service engineers/Expert

Description Enter the pressure value for the lower point (4 mA) of the current partial regression lines.

Using this parameter and "Curr. trim 20 mA", you can adapt the current output to the
transmission conditions.

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