Endress+Hauser Waterpilot FMX167 Technical Information

TI351P/00/EN/06.09
71096099

Technical Information

Waterpilot FMX167

Hydrostatic level measurement
Reliable and robust level probe with ceramic measuring cell
Compact device for level measurement in fresh water, wastewater
and saltwater

Application

The Waterpilot FMX167 is a pressure sensor for
hydrostatic level measurement.
Three versions of FMX167 are available at
Endress+Hauser:

• FMX167 with a stainless steel housing, outer diameter
of 22 mm (0.87 inch): Standard version suitable for
drinking water applications and for use in bore holes
and wells with small diameters

• FMX167 with a stainless steel housing, outer diameter
of 42 mm (1.66 inch): Heavy duty version, easy clean
flush-mounted process diaphragm. Ideally suited to
wastewater and sewage treatment plants

• FMX167 with a coated housing, outer diameter of
29 mm (1.15 inch): Corrosion resistant version
generally for use in saltwater, particularly for ship
ballast water tanks.

Your benefits

• High mechanical resistance to overload and aggressive
media

• High-precision, robust ceramic measuring cell with
long-term stability

• Climate proofed sensor thanks to completely potted
electronics and 2-filter pressure compensation system

• 4 to 20 mA output signal with integrated overvoltage
protection

• Simultaneous measurement of level and temperature
with optionally integrated Pt100 temperature sensor

• Drinking water approvals: KTW, NSF, ACS

• Approvals: ATEX, FM and CSA

• Marine certificate: GL, ABS

• Extensive range of accessories provides complete
measuring point solutions

Waterpilot FMX167

2 Endress+Hauser

Table of contents

Function and system design. . . . . . . . . . . . . . . . . . . . . 3

Device selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Measuring principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Measuring system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

System integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Measured variable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Measuring range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Input signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Output signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Measuring unit electrical connection . . . . . . . . . . . . . . . . . . . . . . . 9

Supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Cable specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Residual ripple . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Reference operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Maximum measured error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Long-term stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Influence of medium temperature . . . . . . . . . . . . . . . . . . . . . . . . 11

Warm-up period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Rise time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Settling time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Installation conditions . . . . . . . . . . . . . . . . . . . . . . . . 12

Installation instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Ambient temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Degree of protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Electromagnetic compatibility (EMC) . . . . . . . . . . . . . . . . . . . . . 13

Overvoltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Process conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Medium temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Medium temperature limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Mechanical construction . . . . . . . . . . . . . . . . . . . . . . 15

Dimensions of the level probe . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Dimensions of the mounting clamp . . . . . . . . . . . . . . . . . . . . . . . 15

Dimensions of the extension cable mounting screws . . . . . . . . . . 16

Dimensions of the terminal box IP 66/IP 67 with filter . . . . . . . . 16

Dimensions of the TMT181 temperature head transmitter . . . . . 17

Terminal box with integrated TMT181 temperature head

transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Extension cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Installation tool – indicating the customer-specific length on

the cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Certificates and approvals . . . . . . . . . . . . . . . . . . . . . 20

CE mark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Ex approval,type of protection . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Drinking water approval

(for FMX167 with Outer diameter 22 mm (0.87 in)) . . . . . . . . . 20

Marine approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Standards and guidelines applied . . . . . . . . . . . . . . . . . . . . . . . . 20

Ordering information. . . . . . . . . . . . . . . . . . . . . . . . . 21

FMX167 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

FMX167 (continued) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Mounting clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Terminal box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Additional weight
(for FMX167 with an outer diameter of 22 mm and 29 mm) . . . 22

TMT181 temperature head transmitter . . . . . . . . . . . . . . . . . . . 22

Extension cable mounting screw . . . . . . . . . . . . . . . . . . . . . . . . 23

Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Test adapter
(for FMX167 with an outer diameter of 22 mm and 29 mm) . . . 23

Additional documentation . . . . . . . . . . . . . . . . . . . . . 23

Field of activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Technical Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Installation/Control Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Drinking water approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Waterpilot FMX167

Endress+Hauser 3

Function and system design

Device selection

Waterpilot FMX167

P01-FMX167xx-16-xx-xx-xx-002

P01-FMX167xx-16-xx-xx-xx-003

P01-FMX167xx-16-xx-xx-xx-004

Field of application Hydrostatic level measurement in deep

wells e.g. drinking water

Hydrostatic level measurement in
wastewater

Hydrostatic level measurement in
saltwater

"

Caution!
The Waterpilot is not suitable for use in biogas plants since the gases can diffuse through the elastomers (seals, extension
cable). Endress+Hauser offers the Deltapilot level transmitter for biogas applications.

Process connection – Mounting clamp

– Extension cable mounting screw with G1

½ A or 1 ½ NPT thread

Outer diameter 22 mm 42 mm Max. 29 mm

Extension cable – PE extension cable

–PUR extension cable
– FEP extension cable

Seals – FKM Viton

–EPDM

1)

– FKM Viton – FKM Viton

–EPDM

Measuring ranges – Nine fixed pressure measuring ranges in bar, mH

2

O, psi and ftH2O,

from 0 to 0.1 bar to 0 to 20 bar (0 to 1 mH

2

O to 0 to 200 mH2O/

0to1.5 psi to 0to300 psi/0to3 ftH

2

O to 0 to 600 ftH2O)

– Customer-specific measuring ranges; factory-calibrated

– Seven fixed pressure measuring

ranges in bar, mH

2

O, psi and ftH2O,
from 0 to 0.1 bar to 0 to 4 bar
(0 to 1 mH

2

O to 0 to 40 mH2O/
0 to 1.5 psi to 0 to 60 psi/
0 to 3 ftH

2

O to 0 to 150 ftH2O)

– Customer-specific measuring

ranges; factory-calibrated

Overload Up to 40 bar (580 psi) Up to 25 bar (362 psi)

Process temperature –10 to +70 °C 0 to +50 °C

Ambient temperature range –10 to +70 °C 0 to +50 °C

Maximum measured error ±0.2 % of upper range value (URV)

Supply voltage 10 to 30 V DC

Output 4 to 20 mA

Options – Drinking water approval

– Integrated Pt100 temperature sensor
– Integrated Pt100 temperature sensor and TMT181 temperature head transmitter (4 to 20 mA/HART)
– Marine approval

Specialties – Large selection of approvals, including ATEX II 2 G, FM and CSA

– High-precision, robust ceramic measuring cell with long-term stability
– Customer-specific cable marking

1) Recommended for drinking water applications, not suitable for use in hazardous areas

Waterpilot FMX167

4 Endress+Hauser

Measuring principle The ceramic measuring cell is a dry measuring cell, i.e. pressure acts directly on the robust ceramic process

isolating diaphragm of the Waterpilot.
Any changes in the air pressure are routed through the extension cable, via a pressure compensation tube, to
the rear of the ceramic process isolating diaphragm and compensated for. A pressure-dependent change in
capacitance caused by the movement of the process isolating diaphragm is measured at the electrodes of the
ceramic carrier. The electronics convert the movement into a pressure-proportional signal which is linear to
the medium level.

P01-FMX167xx-15-xx-xx-xx-002

Measuring principle

1 Ceramic measuring cell
2 Pressure compensation tube
h Level height
p Total pressure = hydrostatic pressure + atmospheric pressure
ρ Density of the medium
g Gravitational acceleration
p

hydr.

Hydrostatic pressure

p

atm

Atmospheric pressure

Temperature measurement with optional Pt100

1)

Endress+Hauser also offers the Waterpilot FMX167 with an optional 4-wire Pt100 resistance thermometer to
measure level and temperature simultaneously. The Pt100 belongs to Accuracy Class B in accordance with
DIN EN 60751, see also → ä 22, Sect. "Accessories.

Temperature measurement with optional Pt100 and TMT181 temperature head transmitter

To convert the Pt100 signal to a 4 to 20 mA signal, Endress+Hauser also offers the TMT181 temperature
transmitter.

h

h

h=

p

ρ • g

p

➀

➁

p

atm

p

hydr.

p+p

atm

=

p

atm

p

atm

p

hydr.

p+p

atm

=

p

hydr.

p

hydr.

–p

atm

=

p

hydr.

(+p

atm

)

Wa

t

e

r

p

i

lo

t

F

M

X

1

6

7

S

e

r

i

a

l

-

N

o

.

:

X

X

X

X

X

X

X

X

X

X

X

M

e

s

s

b

e

r

e

i

c

h

/

r

a

n

g

e

:

0

.

..

3

0

0

f

t

H

2

0

IN

T

.

S

A

F

E

,

C

L

.

I

,

D

I

V

.1

,

G

P

.

A

B

C

D

N

O

N

I

N

C

E

N

D

I

V

E

C

L

.

I,

D

I

V

.

2

,

G

P

.

A

B

C

D

A

E

x

i

a

I

IC

T

6

,

Ta

=

7

0

°

C

E

n

t

i

ty

p

e

r

d

w

g

.

9

6

0

5

0

3

-

1

0

0

9

-

1) Not for use in hazardous areas.

Waterpilot FMX167

Endress+Hauser 5

Measuring system The complete standard measuring system consists of Waterpilot and a transmitter power supply unit with

supply voltage of 10 to 30 V DC.

Possible measuring point solutions with a transmitter and evaluation units from Endress+Hauser:

P01-FMX167xx-14-xx-xx-xx-004

Application examples with FMX167
OVP = Overvoltage protection e.g. HAW from Endress+Hauser (not for use in hazardous areas)

- OVP on the sensor side for field installation: HAW569/for top-hat rail/DINrail: HAW562

- OVP on the supply side for top-hat rail/DINrail: HAW561 (115/230 V) and HAW561K (24/48 V AC/DC)
Option dependent on supply voltage.

1. Simple cost-effective measuring point solution: Power supply of Waterpilot in hazardous and non­hazardous areas using RN221N active barrier.
Power supply and additional control of two consumers, e.g. pumps, via limit switch RTA421 with onsite
display.

2. Evaluation unit RIA45 (for panel mounting) provides a power supply system, an onsite display and two
switch outputs.

3. If several pumps are used, the pump service life can be prolonged by alternate switching. With alternating
pump control, the pump which was out of service for the longest period of time is switched on. The
evaluation unit RIA452 (for panel mounting) provides this option in additional to several other functions.

4. State-of-the-art recording technology with graphic display recorders from Endress+Hauser, such as
Ecograph T, Memograph M, or paper recorders such as Alphalog for documenting, monitoring,
visualizing and archiving purposes.

ENDRESS+HAUSER
RN 221 N

ENDRESS+HAUSER
RTA 421

RN221N

RTA421

FMX167

4…20 mA

➀

➂

➁

➃

RIA45

ON

1

2

E

-+-

RIA45

RIA452

Memograph M

Ecograph T

RSG30

65.0

86.0

13.0

Channel1[%] Channel2[%] Channel3[%]

Power
supply

OP

OP

OP

OP

OP

OP

Power
supply

OP

OP

Power
supply

Power
supply

Waterpilot FMX167

6 Endress+Hauser

P01-FMX167xx-14-xx-xx-xx-005

Application examples with FMX167
OVP = Overvoltage protection e.g. HAW from Endress+Hauser (not for use in hazardous areas)

- OVP on the sensor side for field installation: HAW569/for top-hat rail/DINrail: HAW562

- OVP on the supply side for top-hat rail/DINrail: HAW561 (115/230 V) and HAW561K (24/48 V AC/DC)
Option dependent on supply voltage.

5. If you want to measure, display and evaluate the temperature as well as the level, e.g. to monitor
temperature in fresh water to detect temperature limits for germ formation, you have the following
options:
The optional TMT181 temperature head transmitter can convert the Pt100 signal to a 4 to 20 mA HART
signal and transfer it to any common evaluation unit. The RMA421, RIA45 and RIA452 evaluation units
also offer a direct input for the Pt100 signal.

6. If you want to record and evaluate the level and temperature measured value with one device, use the
RMA422, RIA45 and RIA46 evaluation units with two inputs. It is even possible to mathematically link
the input signals with this unit. These evaluation units are not HART-compatible.

System integration The device can be fitted with a tag name, see → ä 21 ff, "Ordering information", feature 995 "Marking"

version "1".

RIA452

ENDRESS+HAUSER
RMA 421

RMA421

RIA452

ENDRESS+HAUSER
RMA 421

RMA421

4…20 mA

4…20 mA

4…20 mA

Pt100

Pt100

4…20 mA

➄

➅

FMX167 + Pt100

ON

1

2

E

-+-

RIA45

ON

1

2

E

-+-

RIA45

RIA45

RIA45

ON

1

2

E

-+-

RIA45

ENDRESS+HAUSER
RMA 422

RMA422

RIA46

RIA45

12401.5

E

-+-

ON

1

2

ON

1

2

E

-+-

RIA45

ON

1

2

E

-+-

RIA45

Power
supply

Temperature

Temperature

Level

Level

OP

OP

OP

Power
supply

OP

OP

OP

OP

Power
supply

Waterpilot FMX167

Endress+Hauser 7

Input

Measured variable

Measuring range • Nine fixed pressure measuring ranges in bar, mH

2

O, psi and ftH2O;

→ ä 21, "Ordering information" Section

• Customer-specific measuring ranges; factory-calibrated

• Temperature measurement from –10 to +70 °C (optional with Pt100)

Input signal

FMX167 + Pt100 (optional) TMT181 temperature head transmitter

(optional)

• Hydrostatic pressure of a liquid

• Pt100: Temperature of a liquid

• Temperature

Sensor measuring range Lowest span that can be

calibrated

Maximum overload/OPL

1)

1) OPL: overpressure limit, depending on the weakest element, in terms of pressure, of the selected components

Vacuum resistance

[bar] [bar] [bar] [bar

abs

]

0.1 0.01 5.0 0.3

0.2 0.02 5.0 0.3

0.4 0.04 7.0 0

0.6 0.06 10.0 0

1.0 0.1 10.0 0

2.0 0.2 18.0 0

4.0 0.4 25.0 0

10.0

2)

2) These measuring ranges are not offered for the probe version with a coated housing, outer diameter 29 mm.

1.0 40.0 0

20.0

2)

2.0 40.0 0

FMX167 + Pt100 (optional) TMT181 temperature head transmitter

(optional)

• Change in capacitance

• Pt100: change in resistance

• Pt100 resistance signal, 4-wire

Waterpilot FMX167

8 Endress+Hauser

Output

Output signal

Load

Note!
When using the measuring device in hazardous areas, installation must comply with the applicable national
standards and regulations and the Safety Instructions or Installation or Control Drawings.

FMX167 + Pt100 (optional) TMT181 temperature head transmitter

(optional)

• FMX167: 4 to 20 mA for hydrostatic pressure

measured value, two-wire

• Pt100: Temperature-dependent resistance value

of the Pt100

• 4 to 20 mA for temperature measured value,
two-wire

FMX167 + Pt100 (optional) TMT181 temperature head transmitter

(optional)

P01-FMX167xx-16-xx-xx-xx-000 P01-FMX167xx-16-xx-xx-xx-001

R

tot

≤

– 2 • 0.09

•l–R

add

U – 10 V

b

0.0225 A

Ω

m

R

tot

≤ –R

add

U –8V

b

0.025 A

R

ges

= Max. load resistance [Ω]

R

add

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

U

b

= Supply voltage [V]

l = Simple length of extension cable [m] (cable resistance per wire ≤ 0.09 /Ωm)

P01-FMX167xx-05-xx-xx-xx-001

FMX167 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.

P01-FMX167xx-05-xx-xx-xx-003

Temperature head transmitter load chart for estimating
the load resistance. Additional resistances have to be
subtracted from the value calculated as shown in the
equation.

888

444

666

222

30

20

25

10

15

R

[]Ω

[V]

U

B

30

20 25158

35

10

1080

880

480

280

680

80

R

[]Ω

[V]

U

B

Waterpilot FMX167

Endress+Hauser 9

Power supply

Measuring unit electrical
connection

Note!

• When using the measuring device in hazardous areas, installation must comply with the applicable national
standards and regulations and the Safety Instructions (XAs) or the Installation or Control Drawings (ZDs),
see also → ä 23, Sect. "Safety instructions", "Installation/Control Drawings".

• Reverse polarity protection is integrated in the Waterpilot FMX167 and in the temperature head transmitter
TMT181. Changing the polarities will not result in the destruction of the devices.

• The cable must end in a dry room or a suitable terminal box. For installation outside, use the terminal box
(IP 66/IP 67) with a GORE-TEX

®

filter from Endress+Hauser. The terminal box can be ordered using the

order code of the FMX167 (→ ä 21, Sect. "Ordering information") or as an accessory (order number:

52006252).

Waterpilot FMX167, standard Waterpilot FMX167 with Pt100

P01-FMX167xx-04-xx-xx-xx-008

FMX167 electrical connection, versions "7" or "3" for
Feature 70 "Additional options" in the order code
(→ ä 21).

P01-FMX167xx-04-xx-xx-xx-006

FMX167 electrical connection with Pt100, versions "1" or
"4" for Feature 70 "Additional options" in the order code
(→ ä 21).

m Not for FMX167 with outer diameter 29 mm (1.15 in)

Waterpilot FMX167 with Pt100 and TMT181 temperature head transmitter TMT181) (4 to 20 mA)

P01-FMX167xxx-04-xx-xx-xx-007

FMX167 with Pt100 and TMT181 temperature head transmitter (4 to 20 mA),
version "5" for Feature 70 in the order code (→ ä 21).

m Not for FMX167 with outer diameter 29 mm (1.15 in)

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

RD

BK

FMX167

R

L

4…20 mA

10…30 V DC

➀

FMX167

Pt 100

RD

BK

WH

YE BU

BR

10…30 V DC

4…20 mA

R

L

➀

2

1

6

5

4

3

Pt 100

RD

BK

WH

YE BU

BR

FMX167

8…35VDC

4…20 mA

10…30 V DC

4…20 mA

TMT181 (4…20 mA)

R

L

R

L

➀

Waterpilot FMX167

10 Endress+Hauser

Supply voltage Note!

When using the measuring device in hazardous areas, installation must comply with the applicable national
standards and regulations and the Safety Instructions (XAs) or the Installation or Control Drawings (ZDs).
→ ä 23, Sect. "Safety instructions", "Installation/Control Drawings".

Cable specifications

Power consumption

Current consumption

Residual ripple

FMX167 + Pt100 (optional) TMT181 temperature head transmitter (optional)

• FMX167: 10 to 30 V DC

• Pt100: 10 to 30 V DC

• 8 to 35 V DC

FMX167 + Pt100 (optional) TMT181 temperature head transmitter (optional)

• Commercially available instrument cable

• Terminals in terminal housing FMX167:

0.08 to 2.5 mm

2

• If the Pt100 signal is directly connected to a
display and/or evaluation unit, Endress+Hauser
recommends using a shielded cable.

• Commercially available instrument cable

• Terminals in terminal housing FMX167:

0.08 to 2.5 mm

2

• Transmitter connection: max. 1.75 mm

2

FMX167 + Pt100 (optional) TMT181 temperature head transmitter (optional)

≤ 0.675 W at 30 V DC ≤ 0.875 W at 35 V DC

FMX167 + Pt100 (optional) TMT181 temperature head transmitter (optional)

• Max. current consumption: ≤ 22.5 mA
Min. current consumption: ≥ 3.5 mA

• Pt100: ≤ 0.6 mA

• Max. current consumption: ≤ 25 mA
Min. current consumption: ≥ 3.5 mA

• Pt100 via temperature head transmitter: ≤ 0.6 mA

FMX167 + Pt100 (optional) TMT181 temperature head transmitter (optional)

No effect for 4 to 20 mA signal up to ±5 % residual
ripple within permissible range

U

ss

≥ 5 V at UB ≥ 13 V, f

max.

= 1 kHz

Waterpilot FMX167

Endress+Hauser 11

Accuracy

Reference operating
conditions

Maximum measured error

Long-term stability

Influence of medium
temperature

• Thermal change in zero signal and output span
for typical application temperature range 0 to +30 °C (+32 to +86°F):
±0.4 % (±0.5 %)* of the upper range limit (URL)

• Thermal change in zero signal and output span
for the entire medium temperature range –10 to +70 °C (+14 to +158°F):
±1.0 % (±1.5 %)* of the upper range limit (URL)

• Temperature coefficient

K

) of zero signal and output span:

0.15 %/10 K (0.3 %/10 K)* of the upper range limit (URL)

* Specifications for sensors 0.1 bar (1 mH2O, 1.5 psi, 3 ftH2O) and 0.6 bar (6 mH2O, 10 psi, 20 ftH2O)

Warm-up period

Rise time

Settling time

FMX167 + Pt100 (optional) TMT181 temperature head transmitter (optional)

DIN EN 60770 T

U

= 25 °C (77°F) Calibration temperature 23 °C ± 5 K (73°F ± 5 K)

FMX167 + Pt100 (optional) TMT181 temperature head transmitter (optional)

• Non-linearity including hysteresis and non­repeatability as per DIN EN 60770:
±0.2 % of upper range value (URV)

• Pt100: max. ±0.7 K
(Class B to DIN EN 60751)

• ±0.2 K

• With Pt100: max. ±0.9 K

FMX167 + Pt100 (optional) TMT181 temperature head transmitter (optional)

±0.1 % of the upper range limit (URL) per year ≤ 0.1 K per year

FMX167 + Pt100 (optional) TMT181 temperature head transmitter (optional)

20 ms 4 s

FMX167 + Pt100 (optional) –

• FMX167: 80 ms

• Pt100: 160 s

–

FMX167 + Pt100 (optional) –

• FMX167: 150 ms

• Pt100: 300 s

–

Waterpilot FMX167

12 Endress+Hauser

Installation conditions

Installation instructions

P01-FMX167xx-11-xx-xx-xx-003

Installation examples, here shown with FMX167 with an outer diameter 22 mm

1 Extension cable mounting screw can be ordered via order code or as an accessory, → ä 21 ff
2 Terminal housing can be ordered using the order code or as an accessory → ä 21
3 Extension cable bending radius > 120 mm
4 Mounting clamp can be ordered via order code or as an accessory, → ä 21 ff
5 Extension cable, cable length → ä 18
6 Guide pipe
7 Additional weight can be ordered as an accessory with an outer diameter of 22 mm and 29 mm, → ä 22
8 Protection cap

Note!

• 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 larger than the outer diameter of the selected FMX167.

• The cable must end in a dry room or a suitable terminal box. The terminal box from Endress+Hauser
provides optimum humidity and climatic protection and is suitable for outdoor installation.

• Protection cap: The device is provided with a protection cap to prevent mechanical damage to the measuring
cell. This cap should not be removed during the transportation and installation process.

• Endress+Hauser recommends using twisted, shielded cables for any further wiring.

➀

➂

➁

➃

➄

➅

➆

➇

FMX167

OPEN

CLOSE

90°

90°

Ser.-No.:

OrderCode: L=

Mat:

Messbereich/range:

Dat./Insp.:

250000874-C

TAG:

Vmax:

WaterpilotFMX167

MadeinGermany,D-79689Maulburg

Waterpilot FMX167

Endress+Hauser 13

Environment

Ambient temperature range

Storage temperature range

Degree of protection

Electromagnetic
compatibility (EMC)

Overvoltage protection

FMX167 + Pt100 (optional) TMT181 temperature head transmitter (optional)

• FMX167
with outer diameter of 22 mm and 42 mm:
–10 to +70 °C (= medium temperature)

• FMX167 with outer diameter of 29 mm:
0 to +50 °C (= medium temperature)

Terminal box

–40 to +80 °C

–40 to +85 °C

FMX167 + Pt100 (optional) TMT181 temperature head transmitter (optional)

–40 to +80 °C

Terminal box

–40 to +80 °C

–40 to +100 °C

FMX167 + Pt100 (optional) TMT181 temperature head transmitter (optional)

• IP 68, permanently hermetically sealed

• Optional terminal box: IP 66/IP 67

• IP 00, moisture condensation permissible

• When mounted in the optional terminal boxes:
IP 66/IP67

FMX167 + Pt100 (optional) TMT181 temperature head transmitter (optional)

• Interference emission to EN 61326 Class B
equipment, interference immunity to EN 61326
Appendix A (Industrial)

• Maximum deviation < 0.5 % of the span.

• Interference emission to EN 61326 Class B
equipment, interference immunity to EN 61326
Appendix A (Industrial)

FMX167 + Pt100 (optional) TMT181 temperature head transmitter (optional)

Integrated overvoltage protection to EN 61000-4-5
(500 V symmetrical/1000 asymmetrical)
Install overvoltage protection ≥ 1.0 kV, external if
necessary

Install overvoltage protection, external if necessary.

Waterpilot FMX167

14 Endress+Hauser

Process conditions

Medium temperature range

Medium temperature limits

FMX167 + Pt100 (optional) TMT181 temperature head transmitter (optional)

• FMX167
with outer diameter of 22 mm and 42 mm:
–10 to +70 °C

• FMX167 with outer diameter of 29 mm:
0 to +50 °C

–40 to +85 °C (-40 to +185°F) (= ambient
temperature),
install temperature head transmitter outside medium.

FMX167 + Pt100 (optional)

• FMX167
with outer diameter of 22 mm and 42 mm:
–20 to +70 °C

• FMX167 with outer diameter of 29 mm:
0 to +50 °C

(You may operate the FMX167 in this temperature
range. The specification can then be exceeded, e.g.
measuring accuracy).

Waterpilot FMX167

Endress+Hauser 15

Mechanical construction

Dimensions of the level probe

P01-FMX167xx-06-xx-xx-xx-008

Versions of FMX167

1 FMX167, version "A" or "D" for Feature 30 "Probe tube" in the order code (→ ä 21)
2 FMX167, version "B" for Feature 30 "Probe tube" in the order code (→ ä 21)
3 FMX167, version "C" for Feature 30 "Probe tube" in the order code (→ ä 21)
4 Pressure compensation tube
5 Extension cable
6 Protection cap

Dimensions of the mounting
clamp

P01-FMXxxxx-06-xx-xx-xx-010

Mounting clamp, version "2" for Feature 20 "Connection" in the order code (→ ä 21)

225

240

ø22 ± 0.1

224

209

ø41.5

ø8

235

245

max. ø29

ø8

ø42

➀

➂

➁

ø8

➃

➄

➅

➃

➃

➄

➄

➅

➅

(ø0.31)

(ø0.31)

(ø0.31)

(ø9.86)

(ø9.45)

(ø8.23)

(ø8.82)

(ø0.87)

(ø1.65)

(ø9.64)

(ø9.24)

(ø1.14)

(ø1.63)

mm (inch)

48

max. 52

22

175

52

mm (inch)

(1.89)

(6.89)

(2.05)

(0.86)

Waterpilot FMX167

16 Endress+Hauser

Dimensions of the extension
cable mounting screws

P01-FMXxxxx-06-xx-xx-en-009

Extension cable mounting screws

1 Extension cable mounting screw G1 ½ A, version "3" for Feature 20 "Connection" in the order code (→ ä 21)
2 Extension cable mounting screw 1

½ NPT, version "4" for Feature 20 "Connection" in the order code (→ ä 21)

Note!
Application in unpressurized containers only.

Dimensions of the terminal
box IP 66/IP 67 with filter

P01-FMX167xx-06-xx-xx-xx-011

Terminal box

Version "3", "4" or "5" for Feature 70 "Additional options" in the order code (→ ä 21)

1 Dummy plug M 20x1.5
2GORE-TEX

®

filter

3 Terminals for 0.08 to 2.5 mm

2

1½ NPT

~83

16

~83

ø55

G1½A

~49

16

➀➁

41 AF

36 AF

80

OPEN

CLOSE

90°

90°

M 20x1.5

ø4.5

50.2

10 108.2

~30

55

120

➀

➂➁

mm (inch)

(2.16)

(3.15)

(~1.18)

(0.39)

(4.26)

(ø0.18)

(1.97)

60 ±0.5

(2.36)

(4.72)

Waterpilot FMX167

Endress+Hauser 17

Dimensions of the TMT181
temperature head transmitter

P01-FMX167xx-06-xx-xx-xx-012

TMT181 temperature head transmitter (4 to 20 mA)

Version "5" for Feature 70 "Additional options" in the order code (→ ä 21). The temperature head transmitter can be
used in non-hazardous areas and for EEx nA.

Terminal box with integrated
TMT181 temperature head
transmitter

P01-FMXxxxxx-06-xx-xx-xx-022

Note!
A distance of >7 mm must be maintained between the terminal strip and the TMT181 temperature head
transmitter.

Weight • Level probe, outer diameter 22 mm: 290 g

• Level probe, outer diameter 42 mm: 1150 g

• Level probe, outer diameter 29 mm: 340 g

• PE extension cable: 52 g/m

• PUR extension cable: 60 g/m

• FEP extension cable: 108 g/m

• Mounting clamp: 170 g

• Extension cable mounting screw G 1 ½ A: 770 g

• Extension cable mounting screw 1 ½ NPT: 724 g

• Terminal box: 235 g

• Temperature head transmitter TMT181: 40 g

• Additional weight: 300 g

• Testing adapter: 39 g

33

ø44

ø7

ø5

21

mm (inch)

(ø0.19)

(1.30)

(ø0.27)

(ø1.73)

(0.83)

>7

(>0.27)

mm (inch)

Waterpilot FMX167

18 Endress+Hauser

Material Level probe

• Level probe, outer diameter 22 mm: 1.4435 (AISI 316L)

• Level probe, outer diameter 42 mm: 1.4435 (AISI 316L)

• Level probe, outer diameter 29 mm: 1.4435 (AISI 316L)
– Sensor sleeve: PPS (polyphenylene sulfide)
– Heat-shrink sleeve/cover: Polyolefin
Metal does not come into contact with the medium.

• Process ceramic: Al

2O3

aluminum oxide ceramic

• Seal (internal): EPDM or Viton

• Protection cap:
– PE-HD (high-density polyethylene) for FMX167 with outer diameter 22 mm and 29 mm.
– PFA (perfluoroalkoxy) for FMX167 with outer diameter 42 mm.

• Extension cable insulation: Either PE-LD (low-density polyethylene), FEP (fluorinated ethylene propylene)
or PUR (polyurethane). For more information, see → ä 18, "Extension cable"

• Mounting clamp: 1.4404 (AISI 316L) and fiberglass reinforced PA (polyamide)

• Extension cable mounting screw G 1

½A: 1.4301 (AISI 304)

• Extension cable mounting screw 1

½NPT: 1.4301 (AISI 304)

• Terminal box: PC (polycarbonate)

• Temperature head transmitter TMT181: PC housing (polycarbonate)

Extension cable PE extension cable

• Abrasion-resistant extension cable with Dynema strain-relief members; shielded with aluminum-coated
film; insulated with polyethylene (PE), black; copper wires, twisted

• Pressure compensation tube with Teflon filter

PUR extension cable

• Abrasion-resistant extension cable with Dynema strain-relief members; shielded with aluminum-coated
film; insulated with polyurethane (PUR), black; copper wires, twisted

• Pressure compensation tube with Teflon filter

FEP extension cable

• Abrasion-resistant extension cable; shielded with galvanized steel wire netting; insulated with fluorinated
ethylene propylene (FEP), black; copper wires, twisted

• Pressure compensation tube with Teflon filter

Cross-section of PE/PUR/FEP extension cable

• Total outer diameter: 8.0 mm ± 0.25 mm

• FMX167: 3 x 0.227 mm

2

+ pressure compensation tube with Teflon filter

• FMX167 with Pt100 (optional): 7 x 0.227 mm2 + pressure compensation tube with Teflon filter

• Pressure compensation tube with Teflon filter:
Outer diameter 2.5 mm (0.098 inch), internal diameter 1.5 mm (0.059 inch)

Cable resistance of PE/PUR/FEP extension cable

• Cable resistance per wire: ≤ 0.09 Ω/m

Cable length of PE/PUR/FEP extension cable

• Please refer also to → ä 8, Sect. "Load".

• Cable length that can be ordered
– Customer-specific length in meters or feet (→ ä 21, "Ordering information")
– Limited cable length when performing installation with freely suspended device with extension cable

mounting screw or mounting clamp, as well as for Ex approval: max. 300 m/984 ft.

• When using the measuring device in hazardous areas, installation must comply with the applicable national
standards and regulations and the Safety Instructions (XAs) or the Installation or Control Drawings (ZDs).
See also → ä 23, "Safety instructions" and "Installation/Control Drawings" Sections.

Further technical data of PE /PUR/FEP extension cable

• Minimum bending radius: 120 mm

• Tensile strength: max. 950 N

• Cable extraction force: typical ≥ 450 N (FE, FEP) / typical ≥ 150 N (PUR)
(The extension cable could be extracted from the level probe with a appropriate tensile force.)

• Resistance to UV light

• PE: Approved for use with drinking water

Terminals • Three terminals as standard in the terminal box

• 4-terminal strip can be ordered as an accessory, Order No: 52008938
Conductor cross-section 0.08 to 2.5 mm

2

Waterpilot FMX167

Endress+Hauser 19

Installation tool –
indicating the customer­specific length on the cable

Note!

• The mark is for installation purposes only.
It must be thoroughly removed without trace in the case of devices with drinking water approval. The
extension cable must not be damaged in the process.

• Not for use in hazardous areas.

P01-FMX21xx-11-xx-xx-xx-002

1 cable marking, distance to the lower end of the cable probe

• To make installation easier, Endress+Hauser
offers a mark on the extension cable for a
customer-specific length, see also → ä 21,
"Ordering information".

• Mark tolerance: up to ±50 mm
(the mark tolerance corresponds to a measured
error from up to ±50 mm)

• Material: PET

• Adhesive: acrylic

• Immunity to temperature change:
–30 to +100 °C

1

Waterpilot FMX167

20 Endress+Hauser

Certificates and approvals

CE mark The device meets the legal requirements of the applicable EC Directives.

Endress+Hauser confirms successful testing of the device by affixing to it the CE mark.

Ex approval,
type of protection

• ATEX II 2 G EEx ia IIC T6

1)

• ATEX II 3 G EEx nA II T6

1)

• FM: IS, Class I, Division 1, Groups A–D

1)

• CSA: IS, Class I, Division 1, Groups A–D

1)

Note!

• Waterpilot FMX167 is only available for use in hazardous areas with the FKM Viton seal.

• The cable marking cannot be ordered with the Ex approvals listed due to a potential electrostatic charge (see

→ ä 21, "Ordering information").

• All explosion-protection data are given in a separate documentation which is available upon request. The

Ex documentation is provided with all Ex-systems as standards, see also → ä 23, Sect. "Additional
documentation", "Safety instructions" and "Installation/Control Drawings".

Drinking water approval
(for FMX167 with Outer
diameter 22 mm (0.87 in))

• KTW certificate

• NSF 61 approval

• ACS approval

Marine approval • GL approval

• ABS approval

Standards and guidelines
applied

The European standards and guidelines that have been applied are listed in the associated EC Declarations of
Conformity. In addition, the following standards were also applied for the Waterpilot FMX167:

DIN EN 60770 (IEC 60770):
Transmitters for use in industrial process control systems
Part 1: Methods for performance evaluation

DIN 16086:
Electrical pressure measuring instruments,
pressure sensors, pressure transmitters,
pressure measuring instruments, concepts, specifications on data sheets

EN 61326:
Electrical equipment for measurement, control and laboratory use – EMC requirements

1)

Only for Waterpilot FMX167 without Pt100 and TMT181

Waterpilot FMX167

Endress+Hauser 21

Ordering information

FMX167 You can enter the versions for the specific feature in the following table. The versions entered make up the

complete order code. Options which are mutually exclusive are not marked.

10 Approval

A Non-hazardous area

B ATEX II 2 G EEx ia IIC T6

C ATEX II 3 G EEx nA II T6

D FM IS, Class I, Division 1, Groups A – D

E CSA IS, Class I, Division 1, Groups A – D

F CSA General Purpose

20 Connection

1 Probe cable

2 Mounting clamp, AISI 316L

3 Cable mounting screw G1-

½, AISI 304

4 Cable mounting screw NPT 1-

½, AISI 304

30 Probe tube:

A Outer diameter d = 22 mm, AISI 316L

B Outer diameter d = 42 mm, flush-mounted, AISI 316L

C Outer diameter d = 29 mm (1.15 in), AISI 316L with heat-shrink sleeve PPS/polyolefin for saltwater applications

D Outer diameter d = 22 mm (0.87 in), AISI 316L + drinking water approval

(can only be selected in conjunction with EPDM seal and PE probe cable)

40 Measuring range:

Measuring range Measuring range

BA 0 to 0.1 bar MA 0 to 1 mH

2

O

BB 0 to 0.2 bar MB 0 to 2 mH

2

O

BC 0 to 0.4 bar MC 0 to 4 mH

2

O

BD 0 to 0.6 bar MD 0 to 6 mH

2

O

BE 0 to 1.0 bar ME 0 to 10 mH

2

O

BF 0 to 2.0 bar MF 0 to 20 mH

2

O

BG 0 to 4.0 bar MG 0 to 40 mH

2

O

BH 0 to 10.0 bar MH 0 to 100 mH

2

O

BK 0 to 20.0 bar MK 0 to 200 mH

2

O

PA 0 to 1.5 psi FA 0 to 3 ftH

2

O

PB 0 to 3 psi FB 0 to 6 ftH

2

O

PC 0 to 6 psi FC 0 to 15 ftH

2

O

PD 0 to 10 psi FD 0 to 20 ftH

2

O

PE 0 to 15 psi FE 0 to 30 ftH

2

O

PF 0 to 30 psi FF 0 to 60 ftH

2

O

PG 0 to 60 psi FG 0 to 150 ftH

2

O

PH 0 to 150 psi FH 0 to 300 ftH

2

O

PK 0 to 300 psi FK 0 to 600 ftH

2

O

VV Adjusted to customer specifications from 0 to ___ (upper range value) in ___ (unit),upper range value:

0.1 bar (1 mH

2

O, 1.5 psi, 3 ftH2O) to 20 bar (200 m2HO, 300 psi, 600 ft2HO)

50 Sensor seal:

1 FKM Viton

2EPDM

60 Probe cable:

A ... m, shortable, PE

B 10 m, shortable, PE

C 20 m, shortable, PE

E 30 ft, shortable, PE

F 60 ft, shortable, PE

G ... ft, shortable, PE

I ... m, shortable, FEP

K 10 m, shortable, FEP

L 20 m, shortable, FEP

M 30 ft, shortable, FEP

N 60 ft, shortable, FEP

P ... ft, shortable, FEP

FMX167 Order code

→ Ordering information for FMX167 continued on next page.

Waterpilot FMX167

22 Endress+Hauser

FMX167 (continued)

1)

incl. terminal box, see feature "3" or "4"

Accessories

Mounting clamp • Endress+Hauser offers a mounting clamp for simple FMX167 mounting → ä 15

• Material: 1.4404 (AISI 316L) and fiberglass reinforced PA (polyamide)

• Order number: 52006151

See also → ä 21, "Ordering information"

Terminal box • Terminal box IP 66/IP 67 with GORE-TEX

®

-filter incl. 3 installed terminals.

The terminal box is also suitable for installing a temperature head transmitter (Order No. 52008794) or for
four additional terminals (Order No. 52008938) → ä 23.

• Order number: 52006152

Additional weight
(for FMX167 with an outer
diameter of 22 mm and
29 mm)

TMT181 temperature head
transmitter

• 2-wire temperature head transmitter, configured for a measuring range from –20 to +80 °C.
This setting offers a temperature range of 100 K which can be easily mapped. Please note that the Pt100
resistance thermometer is designed for a temperature range from –10 to +70 °C → ä 22.

• Order number: 52008794

60 Probe cable:

R ... m cable, shortable, PUR

S 10 m cable, shortable, PUR

T 20 m cable, shortable, PUR

U ... m cable, shortable, PUR

V 30 ft cable, shortable, PUR

W 60 ft cable, shortable, PUR

70 Additional option:

7 Basic version

1 Pt100, 4-wire

5 Pt100 + temperature head transmitter TMT181, 2-wire, 4 to 20 mA = –20 to +80 °C

(-4 to +176°F)

1)

3 Terminal box IP66/67

4 Terminal box IP66/67 + Pt, 4-wire

A m cable marking>installation

B ft cable marking>installation

C m cable marking, terminal box, cable marking>installation, terminal box IP66/67

D ft cable marking, terminal box, cable marking>installation, terminal box IP66/67

S GL/ABS marine certificate

995 Marking

1Measuring point (TAG)

FMX167 Complete order code

P01-FMX167xx-06-xx-xx-xx-014

• Endress+Hauser offers additional weights to prevent
sideways movement that results in measuring errors,
or to make it easier to lower the device in a guide
tube.
You can screw several weights together. The weights
are then attached directly to the FMX167. For
FMX167 with outer diameter 29 mm (1.15 in), a
maximum of 5 weights may be screwed on to
FMX167.

• Material: 1.4435 (AISI 316L)

• Weight: 300 g

• Order number: 52006153

ø22

M 14x1

105.8

110.6

Waterpilot FMX167

Endress+Hauser 23

Extension cable mounting
screw

• Endress+Hauser offers extension cable mounting screws to simplify the installation of the FMX167 and to

close the measuring open → ä 16.

• Material: 1.4301 (AISI 304)

• Order number for extension cable mounting screw with G 1

½ A thread: 52008264

• Order number for extension cable mounting screw with 1 ½ NPT thread: 52009311

Terminals • Four terminals in strip for FMX167 terminal box, suitable for wire cross-section of 0.08 to 2.5 mm

2

• Order number: 52008938

Test adapter
(for FMX167 with an outer
diameter of 22 mm and
29 mm)

Additional documentation

Field of activities • Pressure measurement: FA004P/00/EN

• Recording technology: FA014R/09/EN

• System components: FA016K/09/EN

Technical Information • Technical Information Waterpilot FMX21 with 4 to 20 mA with HART output signal: TI431P/00/EN

• Technical Information Deltapilot M: TI437P/00/EN

• Temperature Head Transmitter iTEMP PCP TMT181: TI070R/09/EN

Operating Instructions • Waterpilot FMX167: BA231P/00/EN

Safety instructions • ATEX II 2 G Ex ia IIC T6: XA131P/00/A3

• ATEX II 3 G Ex nA II T6: XA132P/00/A3

Installation/Control Drawings • FM IS Class I, Div. 1, Groups A – D: ZD063P/00/EN

• CSA IS Class I, Div. 1, Groups A – D: ZD064P/00/EN

Drinking water approval • SD126P/00/A3

P01-FMX167xxx-06-xx-xx-xx-013

Testing adapter

A FMX167 level probe connection
B Compressed air hose connection, internal

diameter of quick coupling piece 4 mm

• Endress+Hauser offers a testing adapter to ease
function-testing of the level probes.

• Observe the maximum pressure for the
compressed air hose and the maximum
overload for the level probe → ä 7.

• Maximum pressure of the quick coupling piece
supplied: 10 bar

• Adapter material: 1.4301 (AISI 304)

• Quick coupling piece material:
anodized aluminum

• Adapter weight: 39 g

• Order number: 52011868

SW 12

M 14x1

~25

~33

SW 22

SW 13

A

22 AF

13 AF

12 AF

Instruments International

Endress+Hauser
Instruments International AG
Kaegenstrasse 2
4153 Reinach
Switzerland

Tel. [phone]
Fax [phone]
www.endress.com
[e-mail]

TI351P/00/EN/06.09
71096099
CCS/FM+SGML 6.0

71096099