Georg Fischer 2270 Operating Manual

GF Piping Systems

Instruction manual

2270 Ultrasonic Level Sensor



Content

1. Safety and responsibility .............................................................................................................................. 2

1.1 Intended use ............................................................................................................................................... 2

1.2 Safety regulations for the Ex approved units ............................................................................................ 2

2. Transport and Storage ................................................................................................................................. 2

3. Design and Function ..................................................................................................................................... 2

3.1 Design ......................................................................................................................................................... 2

3.2 Function ...................................................................................................................................................... 3

3.3 Basic concepts and elements of the ultrasonic measurement............................................................... 4

3.4 Identifikation ............................................................................................................................................... 4

4. Technical Data .............................................................................................................................................. 5

4.1 Dimensions ................................................................................................................................................. 6

4.2 Scope of delivery ........................................................................................................................................ 6

5. Installation .................................................................................................................................................... 7

5.1 Liquid Level Measurement ........................................................................................................................ 7

5.2 Wiring .......................................................................................................................................................... 9

6. Putting into operation ................................................................................................................................. 10

6.1 Usage ........................................................................................................................................................ 10

7. Programming .............................................................................................................................................. 11

7.1 Measurement configuration .................................................................................................................... 11

7.2 Current output .......................................................................................................................................... 16

7.3 Digital communication ............................................................................................................................. 17

7.4 Measurement optimisation ...................................................................................................................... 17

7.5 Volume (content) measurement .............................................................................................................. 20

7.6 Open channel flow measurement ........................................................................................................... 21

7.7 32-Point-Linearisation ............................................................................................................................. 24

7.8 Information parameters (read out parameters) ..................................................................................... 25

7.9 Additional parameters of the flow metering ........................................................................................... 26

7.10 Other parameters ................................................................................................................................... 26

8. Maintenance ............................................................................................................................................... 26

9. Error codes ................................................................................................................................................. 27

10. Parameter table ........................................................................................................................................ 28

11. Sound velocity values in different gases .................................................................................................. 30

12. Article overview ......................................................................................................................................... 30

13. Disposal .................................................................................................................................................... 31

1

Instruction for use Safety and responsibility

1. Safety and responsibility

1.1 Intended use

The 2270 Ultrasonic Level Sensors are excellent tools for level measurement of liquids. Level
measurement technology based on the non-contacting ultrasonic principle is especially suited for
applications where, for any reason, no physical contact can be established to the surface of the material
to be measured.

1.2 Safety regulations for the Ex approved units

Diameter of the cable should match the cable conduit. The cable outside the unit should be fixed so that
it should be free of loading. The terminal box should be selected in accordance with the electrical class of
the area. Transmitter can only be powered by certified intrinsically safe current loop.
The enclosure of the transducer is plastic that can be loaded electrostatically therefore:

 Filling and emptying speed should be selected according to the medium
 Fog development of the dangerous material during filling should be avoided.
 Cleaning of the plastic enclosure is not allowed in hazardous space.
 The apparatus is not suitable for flame-barrier between the space and the outside area.

2. Transport and Storage

 Transport and/or store product in unopened original packaging.
 Protect product from dust, dirt, dampness as well as thermal and UV radiation.
 Make sure that the product has not been damaged neither by mechanical nor thermal influences.
 Check product for transport damages prior to the installation.

3. Design and Function

3.1 Design

2

Design and Function Instruction for use

3.2 Function

The ultrasonic level metering technology is based on the principle of measuring the time required for the
ultrasound pulses to make a round trip from the sensor to the level to be measured and back. The sensor
emits an ultrasonic pulse train and receives the echoes reflected. The intelligent electronic device
processes the received signal by selecting the echo reflected by the surface and calculates from the time
of flight the distance between the sensor and the surface which constitutes the basis of all output signals
of the 2270 Ultrasonic Level Sensor.

A Total beam angle of 5°-7° at –3 dB as is featured by transducers of transmitters and sensores ensuring
a reliable measurement in narrow silos with uneven side walls as well as in process tanks with various
protruding objects.

Furthermore, as a result of the narrow beam angle - the emitted ultrasonic signals have an outstanding
focusing - deep penetration through gases, vapour and foam is ensured.

XD

1 m 0,2 1 m

2 m 0,3 m

m

X

M

X

5 m 0,56 m
10 m 1 m
15m 1,45 m

rr

D

Diameters corresponding to 5° beam angle.

Minimum measuring distance (X

) is determined by the design of the unit within which the

m

measurement is not possible (Dead Zone) its value is according with P05. Since measurement is
impossible within this range material should not get into this zone

Maximum measuring distance (X

) is the greatest distance (determined by the design of the unit) which

M

can be measured by the unit under ideal conditions. (See parameter P04). Maximum measuring distance
of the actual application (H) must not be greater than X

.

M

3

Instruction for use Design and Function

3.3 Basic concepts and elements of the ultrasonic measurement

3.4 Identifikation

1

2

3

4

M226193

5

6

7

Type

1

Media temperature

2

Voltage

3

CE-marking

4

4

5
6
7

Serial code
Output
Ambient temperature

Technical Data Instruction for use

4. Technical Data

General

Type 2270-X-XX-4 2270-X-XX-6

Range 0.2 to 4 m / 0.65 to 13 ft 0.25 to 6 m / 0.82 to 20 ft

Total Beam Angle 6° 5°

Accuracy * ± (0.2 % of measured distance, 0.05 % of range)

Environmental

Process temperature –30 °C to 80 °C

Process pressure
(absolute)

0.03 to 0.3 MPa (0.3 to 3 bar)

Process connection 1 in. or 1½ in. BSP / NPT 1 in. or 2 in. BSP / NPT

Enclosure

Resolution (dep. on
distance)

<2 m: 1 mm, 2 to 5 m: 2 mm, 6 m: 5 mm

Ingress Protection IP 68 / NEMA 6P

Outputs 2-wire 4 to 20 mA, HART protocol,

max. 600 Ω

2-wire 4 to 20 mA, HART protocol,
max. 600 Ω

Electrical

Power Supply 11.8 to 36 V DC

Power Consumption 48 mW to 720 mW

Housing material PP or PVDF

Cable material Cable sealing: EPDM, cable isolation: PVC

Connection 6 x 0,5 mm2 shielded cable, Ø 6 mm; standard length 5 m (max. 30 m)

* Under optimal circumstances of reflection and stabilised transducer temperature.

Additional data for EX certified devices

Ex marking

II1G EEx ia IIB T6 IP68

Intrinsically safety data

≤ 15 nF, Li ≤ 200 H, Ui ≤ 30 V, Ii ≤ 140 mA, Pi ≤ 1 W

C

i

Ex-device should be powered by EEx ia power supply.

Ex power supply, loading

Medium temperature

< 30 V, I0 < 140 mA, P0 < 1 W, Voltage range 12…30 V,

U

0

= (Us – 12 V) / 0,02 A

R

t max

PP transducer –20 °C ... +70 °C,
PVDF transducer –20 °C ... +80 °C,

Ambient temperature -20 °C … +70 °C

5

Instruction for use Technical Data

4.1 Dimensions

Version 1 ½” BSP/ NPT Version 2” BSP/ NPT

1” BSP

16 22

Ø 96

1 ½” BSP
vagy NPT

BSP: 15, NPT: 22

60

4.2 Scope of delivery

 Installation and Programming Manual

1” BSP

22
16

~199

Ø 96

2” BSP
vagy NP T

~199

BSP: 15 , NPT: 22

60

6

Installation Instruction for use

5. Installation

5.1 Liquid Level Measurement

Position

The optimal position of the Compact
Ultrasonic Level Transmitter Type 2260 is on
the radius
r = (0.3 … 0.5) R of the (cylindrical) tank / silo.
(Take also sonic cone on page 1 into
consideration.)

Sensor alignment
The sensor face has to be parallel to the surface of the liquid
within ± 2-3°.

Temperature
Make sure that the Ultrasonic Level Transmitter Type 2260 will be
protected against overheating by direct sunshine.

Obstacles
Make sure that no in-flow path or objects (e.g. cooling pipes,
ladders, bracing members, thermometers, etc.) or no tank wall of
the ragged surface protrude into the sensing cone of the
ultrasonic beam.
One fix object in the tank / silo that disturb the measurement can
be blocked out by the appropriate programming of the Ultrasonic
Level Transmitters Type 2260 – see parameter P29 “Blocking out
of disturbing object”

Foam
Foaming of the liquid surface may render ultrasonic level metering impossible. If possible, a location
should be found, where foaming is the least (device should be located as far as possible from liquid
inflow) or a stilling pipe or well should be used.

Sonnenschirm

7

Instruction for use Installation

Stand-off

The structure of the stand off pipe should be rigid; the inner rim where the ultrasonic beam leaves
the pipe should be rounded.

D

250



L

min

BSP/ NPT 1 ½” BSP/ NPT 2”

50 60

150

50 60

200

65 65

250

80 75

L

300



D 100

Dmin.

350



L



D 100

Dmin.

Wind
Intensive air (gas) movements in the vicinity of the ultrasonic cone is to be avoided. A strong draft of
wind may "blow away" the ultrasound. Devices with lower measuring frequency (40, 20 kHz) are
recommended.

Fumes/ Vapours

For closed tanks containing chemicals or other liquids, which creats fume/gases above the liquid
surface especially for outdoor tanks exposed to the sun, a strong reduction of the nominal measuring
range of the ultrasonic device is to be considered during device selection.
Devices with lower measuring frequency (40, 20 kHz) are recommended in these cases units.

8

Installation Instruction for use

5.2 Wiring

 Make sure the terminals in the

box are not under power (Use

2

shielded cable 6 x 0.5 mm
suggested in the technical data
or stronger).

white

brown

black

 After powering the necessary

programming can be
performed.

Connection
4 -20 mA
+ test output

Wire colours:

White - I+ one of the points of
current loop, power supply and
HART (polarity independent)

Brown - I- other point of current
loop, power supply and HART
(polarity independent)

Black - GND functional earthing
and shielding point

Junction box

Extension of the
integrated cable:

Should extension be
needed the use of
connection box is
suggested.
The shielding of the two
cables should be
connected and grounded
at the signal processing
device.

Connection
4 – 20 mA
+ HART

9

Instruction for use Putting into operation

Connection
9900
Universal
Transmitter

6. Putting into operation

6.1 Usage

Subsequent to powering the correctly wired device would start to tick and after 10 - 20 s ECHO LED go on
and 4 ... 20 mA signal appears on the current output. Measurement will be according to the factory
setting. The factory setting is throughout apt to check proper working and to perform simple
measurement tasks but features residing in the unit can only be utilised by adjusting the 2270 Ultrasonic
Level Sensor to the application by programming. For sound knowledge of the operation features and
proper solving of difficult measurement applications the parts of the programming should carefully be
studied..

LED indication:

 ECHO-LED

ON, if the unit detects proper echo.

 COM-LED

See description „HART”

Device can be reset to factory setting. Default is the following:

 Measurement: level (LEV)
 Zero level assigned to the maximum distance
 Current output proportional to the level
 4 mA and 0% assigned to zero level.
 20 mA and 100% a assigned to the maximum level (minimum distance)
 Error indication by the current output: holds last value.
 Damping: 60 s.

View from above:

Red LED

„COM”

Cable

Red LED

„ECHO”

10

Programming Instruction for use

7. Programming

The HART interface provides for access to the whole parameter set and possibility of their programming.
Parameter set can be reached in the following way: by the use of the

 Eview light software run on the PC connected through HART modem to the loop or

7.1 Measurement configuration

P00: - c b a Engineering units

Programming of this parameter will result in loading the factory default with the corresponding
engineering units. Therefore all parameters should be set again!

a Operation

0 Liquid level measurement

Engineering units

b

(according to “c”)
Metric US

0 m ft
1 cm Inch

c Calculation system

0 metric
1 US

Factory default: 000

P01: - - 1 a Measurement mode

Parameter value „a” will determine the basic measurement value that will be transmitted. Subsequently
values for the relays are also relating to these quantities.

Measurment

a

mode

Transmitted value Display symbol

0 Distance Distance DIST
1 Level
2 Level % LEV%
3 Volume
4 Volume % VOL%

Level

Volume

LEV

VOL

5 Flow Flow FLOW

A

DIST

H

DIST

0

X

11

m

H

0

LEV

H

P11

P10

D

0

100

LEV %

[%]

Instruction for use Programming

0

B

P10P11

Transmitted value

Parameters to set

DIST

H

DIST LEV=H-DIST

P00
P01(a) = 0
P05 ≥ X

P00
P01(a) = 1
P04 = H

m

P05 ≥ X

A

LEV%=

P00
P01(a) = 2
P04 = H
P05 ≥ X

m

P10 = X
P11 = X

P11



*LEV 

XH



m

m

0%

100%

P1

P10

VOL

C

VOL%=

P00
P01(a) = 4
P02(b)
P04 = H
P05 ≥ Xm
P10 = X
P11 = X

Transmitted value

VOL
f

P40…P45

Parameters to set P00

P01(a) = 3
P02(b)
P04 = H
P05 ≥ X
P40…P45

0

(H-DIST)

m

P40…P45

Description of the figures:
A: Shortest measurable distance
B: Volume (content) pertaining to the greatest measurable level
C: Whole value of the vessel
D: diagram valid for the default value of P10 P11

Factory default: 11

D

0

*VOL 

100

P10P11



P10

XH



m

0%

100%

VOL%

[%]

12

Programming Instruction for use

P02: - c b a Calculation units

a Temperature

0 °C
1 °F

This table is interpreted according to P00(c), P01(a) and P02(c) and is irrelevant in case of percentage
measurement [ P01(a)= 2 or 4 )]

b

Volume Weight (see also P32) Volume flow
Metric US Metric US Metric US

0 m3 ft3 - lb (pound) m3/time ft3/time
1 litre gallon tons tonnes litre/time gallon/time

c Time

0 s
1 min
2 hour

3

day

Attention!

2270 Ultrasonic Level Sensor is a level
transmitter. Although it can be used for
measuring weight, due to factors involved
in doing so, accuracy may essentially be
influenced.

Factory default: 000

P04 - - - - Maximum distance to be measured (H)

This is the only parameter that has to be programmed for each application other than distance (however
to avoid disturbing effect of possible multiple echoes it is suggested to do this in distance measurement
applications too).
The maximum distance to be measured is the greatest distance between the surface of the transducer
and the farthest level to be measured. The factory programmed, greatest distances (DEFAULT values)
which can be measured by the units are listed in the table below. For the actual application the maximum
distance to be measured i.e. the distance between the sensor and the bottom of the tank should be
entered in P04.

2270 Ultrasonic Level Sensor
for liquids

Maximum measuring distance X
Transducer material PP/ PVDF

m/ft

M

Version I 4/13
Version II 6/20

Since the level is determined by calculating the difference between the value set in P04 and distance
(DIST) is measured by the unit, it is essential that the correct value of (H) is set in P04. To obtain the best
accuracy it is suggested that this distance is measured in the empty tank.

Factory default: X

as per chart

M

13

Instruction for use Programming

P05: - - - - Minimum measuring distance (Dead-zone – Close-end blocking)

The range, beginning with the sensor’s surface, within which (due to the physical restraint of the
ultrasound measurement system) measurement can not be made, is called the dead zone. The 2270
Ultrasonic Level Sensor will not accept any echo within the

blocking distance set here.

Close-end blocking may be represented as the extension of the dead zone within which a possible echo
will not be taken into consideration making possible to exclude disturbing objects near to the sensor.

Automatic Close-end blocking =Dead Band control

Device with factory default will automatically

set the smallest possible dead band

(P05 = Xm)

depending on the
conditions of the operation.
This will be under optimal conditions a bit smaller in unfavourable circumstances greater than value
given in the chart.

Manual Close-end-blocking with limitation ≥ dead zone

(P05>Xm)
By entering a value, higher than the factory default the close-end blocking will be either the value
programmed in P05 or the actual dead zone distance (influenced by the actual conditions of the
application) whichever is greater.

2270 Ultrasonic
Level Sensor

Minimum measuring distance Xm m/feet
Sensor material PP/ PVDF

for liquids

Version I 0.2/0.65
Version II 0.25/0.82

Factory default : X

as per chart

m

14

Programming Instruction for use

P06: - - - - Far-end blocking

Far-end blocking is the range below the level set in parameter P06. The far-end blocking can
be used to avoid disturbing effect of stirrer or heaters at the bottom of the tanks. Detecting
echoes in this range the unit provides special signals.

A.) Measuring level or content

 Level sinking below:

- the value of P06 current output is according to the value of the far-end blocking and

further

- below SUB 0 (7/8 of P06) the ERROR CODE 10 will be transmitted via HART

 Level rising over value of far-end blocking: The calculation of level and volume will be

based on the programmed tank dimensions, therefore the measured or calculated

process values will not be influenced in any way, by the far end blocking value.

20mA

B.) Open channel flow metering

Far-end blocking will be used for those small levels below which the accurate volume flow
calculation is no longer possible.

 Level in the flume/weir sinking below the

blocked out range:

- Output current value will be according to

the value of Q = 0

- 0 value transmitted via HART for display of

„No Flow” or 0

 Level in the flume/weir rising over the

blocked out range:
The calculation of volume flow will be based
on the programmed flume/weir data;
therefore the measurement values will not be
influenced in any way, by the far end blocking
value.

Factory default: 0

4mA

X/8

SUB 0

P06=X

P04

P46

H

h

P06

15

Instruction for use Programming

7.2 Current output

P08: - - - - Fixed current output

By this step the output current can be set for a fix value selected from between 3.8 mA and 20.5 mA. This
function is not operational as per the factory default: 0.

Attention: fixing output current will make settings in P10, P11, P12 and P19 irrelevant.

Factory default: 0

P10: - - - - Value (of distance, level, volume or flow) assigned to 4 mA current output

Factory default: 0

P11: - - - - Value (of distance, level, volume or flow) assigned to 20 mA current output

Values are interpreted according to P01(a). Assignment can be made so that the proportion between the
change of the (measured or calculated) process value and the change of the current output be either
direct or inverse. E.g. level 1 m assigned to 4mA and level 10 m assigned to 20 mA represents direct
proportion and level 1 m assigned to 20 mA and level 10 m assigned to 4 mA represents the inverse
proportion. Please note that in case of programming for (LEV or VOL) % measurement the min and max
value has to be entered in the relevant engineering units of LEV (m, ft) or VOL (m

Transmitting level

3

, ft3).

LEV

A

20,5 mA

A: smallest measurable distance
D: diagram valid for default values of P10

DIST

H

P11

3,8 mA

P10

04 20

D

I

out

[mA]

and P11

Factory default: X

– Xm (see table P04 and P05)

M

P12: - - - a Error indication by the current output

In case of error the 2270 Ultrasonic Level Sensor will provide one of the current outputs below for the
time the error prevails.

a Error indication by output current

0 HOLD (letzter Wert halten)
1 3,8 mA
2 22 mA

Factory default: 0

16

Programming Instruction for use

7.3 Digital communication

P19: - - - a Short (HART) address of the unit

These addresses with 0 … 15 are, in accordance with the HART standard, for distinguishing units in the
same loop.

 Address: 0 current output of 4 … 20 ma operational
 Address: 1 … 15 current output is fixed to 4 mA.

Factory default: 2

7.4 Measurement optimisation

P20: - - - a Damping

This parameter can be used to reduce unwanted fluctuation of the display and output.

Damping (s) LIQUIDS

a

0 no filter for testing only
1 3 applicable not recommended
2 6 recommended applicable
3 10 recommended recommended
4 30 recommended recommended
5 60 recommended recommended

Factory default: 5

No or moderate fume/
waves

heavy or dense fume or
turbulent waves

P22: - - - a Dome top tank compensation

This parameter can be used to reduce disturbing effect of possible multiple echoes.

a Compensation Remark

0 OFF In case the 2270 Ultrasonic Level Sensor is not mounted in the

centre of the top and the top is flat.

1 ON In case the 2270 Ultrasonic Level Sensor is mounted in the

centre of a tank with dome-shaped top

Factory default: 0

17

Instruction for use Programming

P24: - - - a Target tracking speed

In this parameter evaluation can be speed up at the expense of the accuracy.

a Tracking speed Remark

0 Standard For most applications
1 Fast For fast changing level

Special Only for special applications (measuring range is reduced to

2

50% of the nominal value) The measuring window is inactive and
the 2270 Ultrasonic Level Sensor will respond practically
instantly to any target

Factory default: 0

P25: - - - a Selection of Echo within the measuring window

A so-called measuring window is formed around the echo signal. The position of this measuring window
determines the flight time for calculation of the distance to the target. (the picture below can be seen on
the test oscilloscope).

Received
signal

Echo 1.

Echo 2.

amplitude

t

t

Some applications involve multiple (target + disturbing) echoes even within the measuring window. Basic
echo selection will be done by the Quest + software automatically. This parameter influences the echo
selection only within the measuring window..

a Echo in the window to be selected Remark

0 With the highest amplitude Most frequently used
1

First one

Factory default: 0

P26: Level elevation rate (filling speed) (m/h or ft/h)

Factory default: 2000

P27: Level descent rate (emptying speed) ) (m/h or ft/h)

For liquids applications with multiple echoes
within the Measuring Window

These parameters provide additional protection against echo loss in applications involving very heavy
fuming. Correct setting increases reliability of the measurement during filling and emptying. The
parameters must not be smaller than the fastest possible filling/emptying rate of the actual technology.

Attention! Level changing rate is rather different near to the conical or spherical bottom of such a
vessel.

Factory default: 2000

18

Programming Instruction for use

P28 - - b a Echo loss indication

a Echo loss indication Remark

During short echo-loss (for the period of twice the time set
in P20) analogue output will hold last value. After this
period the current value according to the setting in P12
and via HART ERROR CODE 2 will be transmitted.

0 Delayed indication

Echo loss
Echo LED goes out

HART

Holding valu e

2 * ”P20” time

Error Code 2

Current 22mA P12=2

Current output

Holding value

Holding last value P12=0

Current 3,8mA P12=1

1 No indication

2 Filling simulation

For the time of echo-loss, analogue output will hold last
value.
Loosing echo during the filling process, transmitted value
will increase according to the filling speed set in P26
Loosing echo the current value (according to the setting in

3 Immediate indication

P12) and the ERROR CODE 2
(via HART) will immediately be transmitted.
Echo-loss may occur in completely empty tanks with a

4 Empty tank indication

spherical bottom due to deflection of the ultrasonic beam,
or in case of silos with an open outlet. In such cases it may
be useful to indicate empty tank instead of echo loss.

Factory default: 10

P29 - - - - Blocking out of disturbing object

One fixed object in the tank, disturbing the measurement, can be blocked out. By the use of the Echo Map
(P70) the precise distance of disturbing object can be read out. This value should be entered in this
parameter.

Factory default: 0

P31: - - - - Sound velocity at 20*C (m/s or ft/s depending on P00(c)

This parameter should be used if the sound velocity in the gases above the measured surface differs
largely from that of in the air. This is recommended for applications where the gas is more or less
homogeneous. If it is not, the accuracy of the measurement can be improved using 32-point linearisation
(P48, P49).

For sound velocities in various gases see section “Sound Velocities”.

Factory default: 343,8 (m/s)

P32: - - - - Specific gravity

Entering a value (other than “0”) of specific gravity in this parameter, the weight will be displayed instead
of VOL. Engineering unit should be [kg/dm

3

] or [lb/ft3] depending on P00 (c)

Factory default: 0

19

Instruction for use Programming

7.5 Volume (content) measurement

P40: - - ba Tank shape

ba Tank shape Also to be set

b0 Standing cylindrical tank shape (value

of “b” as below)

01 Standing cylindrical tank with conical

bottom

02 Standing rectangular tank (with chute) P41, P42, (P43,

b3 Lying cylindrical tank shape (value of

“b” as bellow)

04 Spherical tank P41

Factory default: 00

P41-45: - - - - Behälterabmessungen

P40(b), P41

P41, P43, P44

P44, P45)
P40(b), P41, P42

Attention:
The value „a”
determining the
shape of the tank
should be set first

Standing cylindrical tank

with hemispherical bottom

a=0

Standing cylindrical tank

with conical bottom

a=1 b=0

Standing rectangular tank

with or without chute

a=2 b=1

Plain bottom

Ohne Rutsche sind

P43, P44 and

P43, P44 und P45=0

P45 = 0

b=0

b=1

b=3

b=2

P40

Lying cylindrical tank a = 3

Spherical tank a = 4, b = 0

b=3

P40

b=2
b=1

b=0

Factory default: 0

20

Programming Instruction for use

7.6 Open channel flow measurement

 The unit is suitable for open channel flow measurement with the constructive works
 For ultimate accuracy, install the sensor as close as possible above the expected maximum water

level (see minimum measuring range).

 Install the unit in a place defined by the characteristics of the metering channel along the longitudinal

axis of the flume or weir. In case of Parshall flumes the location of the sensor is marked.

 In some cases foam may develop on the surface. Make sure that the surface, opposite to the sensor,

remains free of foam for proper sound reflection.

 The unit should be fixed so that it‘s position would not change.
 From measurement accuracy point of view the length of the channel sections preceding and following

the measuring flume and their method of joining to the measuring channel section are of critical
importance.

 Despite of the most careful installation, the accuracy of flow metering will be lower than that of

specified for the distance measurement. The features of the flume or weir applied will determine it.

 Devices should be protected against overheating due to direct sunshine by using sunshades.

P40: - - b a Devices, formula, data

ba Devices, formula, data Also to be set

00 GPA-1P1 Q [l/s]= 60.87*h

01 GPA-1P2 Q [l/s]= 119.7*h

02 GPA-1P3 Q [l/s]= 178.4*h

03 GPA-1P4 Q [l/s]= 353.9*h

04 GPA-1P5 Q [l/s]= 521.4*h

05 GPA-1P6 Q [l/s]= 674.6*h

06 GPA-1P7 Q [l/s]= 1014.9*h

07 GPA-1P8 Q [l/s]= 1368*h

08 GPA-1P9 Q [l/s]= 2080.5*h

Type Formula Qmin

[l/s]

1,552

0.26 5.38 30 P46

1,553

0.52 13.3 34 P46

1,555

0.78 49 39 P46

1,558

1.52 164 53 P46

1,558

2.25 360 75 P46

1,556

Parshall channels

2.91 570 120 P46

1,556

4.4 890 130 P46

1,5638

5.8 1208 135 P46

1,5689

8.7 1850 150 P46

Qmax
[l/s]

“P”
[cm]

09 General PARSHALL flume P46, P42
10 PALMER-BOWLUS (D/2) P46, P41
11 PALMER-BOWLUS (D/3) P46, P41
12 PALMER-BOWLUS (Rectangular) P46, P41, P42
13 Khafagi Venturi P46, P42
14 Bottom-step weir P46, P42
15 Suppressed rectangular or BAZIN weir P46, P41, P42
16 Trapezoidal weir P46, P41, P42
17 Special trapezoidal (4:1) weir P46, P42
18 V-notch weir P46, P42
19 THOMSON (90°-notch) weir P46
20 Circular weir P46, P41
21 General flow formula: Q[l/s]= 1000*P41*h

P42

, h [m] P46, P41, P42

Factory default: 00

21

Instruction for use Programming

P41-45: Flume/ weir dimensions

P40=
00

Parshall flumes (GPA1P1 … GPA-1P9)

For further details see the Manual of the
Parshall flume

Sensor

Sensor

P46

P40=
09

P40=
10

P40=
11

General Parshall flume

0,305 < P42(width) <2,44



2,5 < P42

3

/s]= K*P42*h

Q[m

P= 2/3*A



305,0/42372/

hPslQ



P42 [m] K
3,05 2,450
4,57 2,400

1,6

6,10 2,370
7,62 2,350
9,14 2,340
15,24 2,320

Palmer-Bowlus (D/2) flume

3

Q[m

/s]= f(h1/P41)*P41

h+(P41/10)
P41 m

Palmer-Bowlus (D/3) flume

3

Q[m

/s]= f(h1/P41)*P41

wobei h1[m]= h+(P41/10)
P41 m

2,5

, where h1[m]=

2,5

,

Sensor

Sensor

h

A

P

P42

P46

026.0

42569.1

P



P04

P46

P41

D

D/2

1

2

h

D/10

P04

P46

P41

D

D/3

1

2

h

D/10

P40=
12

Palmer-Bowlus (rectangular) flume

3

/s]= C*P42*h

Q[m

1,5

, where C= f(P41/P42)

P41 m, P42 m

P41

P42

D

D/10

P04

P46

h

22

Programming Instruction for use

P40=
13

Khafagi Venturi flume

3

/s] = 1,744 P42  h

Q [m
P42 m
h [m]

1,5

+ 0,091  h

2,5

15cm

Sensor

P42

Sensor

P46

h

P40=
14

P40=
15

P40=
16

P40=
17

P40=
18

Bottom step weir

3

0,0005 < Q [m

/s] < 1
0,3 < P42 [m] < 15
0,1 < h [m] < 10

3

/s]= 5,073  P42  h

Q [m
Accuracy:

 10%

1,5

Suppressed rectangular or BAZIN
weir

3

0,001 < Q [m

/s] < 5
0,15 < P41 [m] < 0,8
0,15 < P42 [m] < 3
0,015 < h [m] < 0,8

3

/s] =1,77738(1+0,1378h/P41)  P42

Q [m
 (h+0,0012)

1,5

Accuracy: 1%

Trapezoidal weir

3

0,0032 < Q [m

/s] < 82
20 < P41[°] < 100
0,5 < P42 [m] < 15
0,1 < h [m] < 2

3

/s] = 1,772  P42  h

Q [m
tg(P41/2)  h
Accuracy:

5%

2,47

1,5

+ 1,320

Special trapezoidal (4:1) weir

3

0,0018 < Q [m

/s] < 50
0,3 < P42 [m] < 10
0,1 < h [m] < 2

3

/s] = 1,866  P42  h

Q [m
Accuracy:

3%

1,5

V-notch weir

3

0,0002 < Q [m

/s] < 1
20 < P42[°] < 100
0,05 < h [m] < 1

3

/s] = 1,320  tg(P42/2)  h

Q[m
Accuracy:

3%

2,47

P04

P04

P04

P04

P40=14

P42

P46

h

P40=15

P42

P46

h

P41

P40=16

P46

h

P41

P42

P40=17

P46

h

P40=18

P46

h

1

4

P42

P42

23

Instruction for use Programming

P40=
19

THOMSON (90°-notch) weir

0,0002 < Q [m

3

/s] < 1

0,05 < h [m] < 1

3

Q[m

/s] = 1,320  h

Accuracy::

3%

2,47

P04

P46

h

P40=19

90

P40=
20

Circular weir

0,0003 < Q [m

3

0,02 < h [m] < 2

3

Q[m

/s] = m*b  D

/s] < 25

2,5

, where b = f (h/D)

P04

P46

h

P40=20

P41

m= 0,555+0,041  h/P41+(P41/(0,11  h))
Accuracy::

5%

Factory default: 0

P46 - - - - Distance at Q=0

Distance between sensor surface and the level at which flow starts has to be entered in this parameter.
Factory default: 0

7.7 32-Point-Linearisation

P47: - - - a Linearisation

Linearisation is the method of assigning requested (calibrated or calculated) level, volume or flow to
values measured by the transmitter. It can be used for instance if the sound velocity is not known
(LEVELLEVEL) or in the case of tank with other shape than under 6.4 or open channel other than under

6.5 (LEVEL  VOLUME or LEVEL  FLOW).

a Linearisation

0 OFF (FACTORY DEFAULT)

Conditions of correct programming of the data pairs

1 ON

 The table must always start with: L(1)= 0 and r(1)= value (assigned to 0 level)
 The table must be ended either with the 32

nd

data pair i.e. j=32 or if the linearisation table contains

less than 32 data-pairs j<32, it must be ended with a level value “0” e.g. L(j<32)= 0.

 The 2270 Ultrasonic Level Transmitter will ignore data after recognising level value “0” with serial

number other than “1”.

If the above conditions are not met, error codes will be displayed (see chapter: Error Codes).

i

L (Left column)
Level values measured

r (Right column)
Value assigned to transmit

1 0 r(1)
2 L(2) r(2)
L(i) r(i)
nn L(nn) r(nn)
nn+1 0
32

Factory default: 0

24

Programming Instruction for use

P48: Number of linearisation data pairs

Number of linearisation data pairs entered in the table.

7.8 Information parameters (read out parameters)

P60: - - - - Overall operating hours of the unit (h)

P61: - - - - Time elapsed after last switch-on (h)

P64: - - - - Actual temperature of the transducer (°C/°F)

Broken loop of the thermometer will be indicated by display of the Pt Error message initiated by a signal
sent via HART. In this case the transmitter will perform temperature correction corresponding to 20ºC.

P65: - - - - Maximum temperature of the transducer (°C/°F)

P66: - - - - Minimum temperature of the transducer (°C/°F)

P70: - - - - Number of Echoes / Echo Map

Amplitude and position of the echoes can also be read out.

P71: - - - - Distance of the of Measuring Window

P72 - - - - Amplitude of the selected echo [dB] <0

P73: Position of the selected echo (time) :(ms) [ms]

P74: Signal To Noise Ratio

Ratio Measurement conditions

Over 70 Excellent
Between 70 and 30 Good
Under 30 Unreliable

P75: - - - - Blocking Distance

The actual close-end blocking distance will be displayed (provided automatic blocking was selected in
P05).

25

Instruction for use Maintenance

7.9 Additional parameters of the flow metering

P76: - - - - Head of flow (LEV) (Read only parameter)

The Headwater value can be checked here. This is the “h” value in the formula for flow calculation..

P77: - - - - TOT1 volume flow totalised (resettable)

P78: - - - - TOT2 volume flow totalised (non-resettable)

7.10 Other parameters

P96: - - - - Software Code 1 (Read only parameter)

P97: - - - - Software Code 2 (Read only parameter)

P98: - - - - Hardware Code (Read only parameter)

P99: - - - - Access lock by secret code

The purpose of this feature is to provide protection against accidental programming or intentional
reprogramming of parameters by a person not entitled to do so. The secret code can be any value other
than 0000. Setting a secret code will automatically be activated when the 2270 Ultrasonic Level Sensor is
returned to the Measurement Mode. In order to program locked device the secret code should be entered
first in P99. Thus for entering a new code or erasing the old one the knowledge of the previous code is
necessary.

8. Maintenance

2270 Ultrasonic Level Sensor units do not require maintenance on a regular basis.

The need for cleaning of the sensor head may occur. Cleaning should be performed by utmost care
where scraping or denting of the transducer have to be avoided.

Repair under or after the guarantee period should only be carried out by GF Piping Systems. Devices for
repair should only be returned duly cleaned and disinfected.

26

Error codes Instruction for use

9. Error codes

Error Code Error description Causes and solutions

1

Memory error Contact representative of GF Piping

Systems

No echo received (no reflection), see

2 Echo loss

chapter „Indication of mistakes (by
LEDs) made during programming”

3

Hardware error Contact representative of GF Piping

Systems

4 Display overflow Check settings

5

Sensor error or improper installation/mounting,
level in the dead band

Verify sensor for correct operation and
check for correct mounting according
to the User’s Manual

6 The measurement is at the reliability threshold Better location should be found.

7

12

No signal received within the measuring range
specified in P04 and P05

Linearisation table error: both L(1) and L(2) are
zero (no valid data-pairs)

Check programming, also look for
installation mistake

See ”Linearisation” Section

13

14

15

16

Linearisation table error: same L(i) data is given
twice in the table

Linearisation table error: the r(i) values are not
monotone increasing

Linearisation table error: measured Level is
higher than the last Volume or Flow data-pair

See ”Linearisation” Section

See ”Linearisation” Section

See ”Linearisation” Section

The check sum of the program is wrong Contact representative of GF Piping

Systems

17 Parameter consistency failure Check programming

18 Hardware failure Check programming

27

Instruction for use Parameter table

c b a

c b a

10. Parameter table

Par. Page Description Value Par. Page Description Value
d
P00 11 Application/ Engineering

P28 19 Echo loss indication

Units

P01 11 Measurement Mode P29 19 Blocking out a disturbing

P02 11 Calculation units P30 –
P03 - P31 19 Sound velocity values in

P04 13 Maximum Measuring

P32 19 Specific gravity

Distance

P05 14 Minimum Measuring

P33 –

Distance
P06 15 Fernausblendung P34 –
P07 – P35 –
P08 – P36 –
P09 – P37 –
P10 16 Transmitted value

P38 –

assigned to „4 mA”
P11 11 Transmitted value

P39 –

assigned to „20 mA”
P12 16 “Error” indication by the

P40 20 Selection of tank shape/ open

current output
P13 – P41 22 Dimensions of tank / Open

P14 – P42 22 Dimensions of tank / Open

P15 – P43 22 Dimensions of tank / Open

P16 – P44 22 Dimensions of tank / Open

P17 – P45 22 Dimensions of tank / Open

P18 – P46 24 Level pertaining to flow Q= 0
P19 – P47 24 Linearisation
P20 17 Damping P48 25 Linearisation table
P21 – P49 –
P22 17 Dome top tank

P50 –

compensation
P23 – P51 –
P24 18 Target tracking speed P52 –
P25 18 Selection of Echo in the

P53 –

measuring window
P26 18 Level elevation rate P54 –
P27 18 Level descent rate P55 –

d

object

different gases

channel

Channel

Channel

Channel

Channel

Channel

28

Parameter table Instruction for use

c b a

c b a

Par. Page Description Value Par. Page Description Value

d

d
P56 – P78 26 TOT2 volume flow totalised
P57 – P79 –
P58 – P80 –

P59 – P81 –
P60 25 Overall operating hours

P82 –

of the unit

P61 25 Time elapsed after last

P83 –

switch-on
P62 – P84 –
P63 – P85 –
P64 25 Actual temperature of

P86 –

the transducer
P65 25 Maximum temperature

P87 –

of the transducer
P66 25 Minimum temperature of

P88 –

the transducer
P67 – P89 –
P68 – P90 –
P69 – P91 –
P70 26 Echo Map P92 –
P71 25 Position of the

P93 –

measuring window
P72 25 Amplitude of the

P94 –

selected echo
P73 25 Position of the selected

P95 –

echo
P74 25 Signal / noise ratio P96 26 Software code 1
P75 25 Blocking distance value P97 26 Software code 2
P76 26 Water head of the flow P98 26 Hardware code
P77 26 TOT1 volume flow

P99 26 Access lock by secret code

totalised

29

Instruction for use Sound velocity values in different gases

11. Sound velocity values in different gases

The following table contains the sound velocity values of various gases measured at 20°C.

Sound

Gases Formula

Velocity

Gases Formula

(m/s)

Acetaldehyde
Acetylene
Ammonia

C
C
NH

2H4

2H2

3

252,8 Ethylene
340,8 Helium He 994,5
429,9 Hydrogen sulphide

O

Argon Ar 319,1 Methane

C
CO

6H6

2

183,4 Methanol
268,3 Neon Ne 449,6

Benzene
Carbon dioxide
Carbon monoxide CO 349,2 Nitrogen

CCl
Cl
CH
C
C

2

2H6

2H3

3

4

OCH3

OH

150,2 Nitrogen monoxide NO 346
212,7 Oxygen
213,4 Propane
327,4 Sulphur hexafluoride
267,3

Carbon tetrachloride
Chlorine
Dimethyl ether
Ethane
Ethanol

C2H4

H2S
CH
CH3OH

N

O2
C3H8
SF6

4

2

Sound
Velocity (m/s)

329,4

321,1
445,5
347

349,1

328,6
246,5
137,8

12. Article overview

Code Type Article description

159 300 155 2270-P-1B-4 Range 4 m, PP body, 4..20 mA 2-wire / HART, BSP thread
159 300 156 2270-P-1B-6 Range 6 m, PP body, 4..20 mA 2-wire / HART, BSP thread

159 300 162 2270-V-1B-4 Range 4 m, PVDF body, 4..20 mA 2-wire / HART, BSP thread
159 300 163 2270-V-1B-6 Range 6 m, PVDF body, 4..20 mA 2-wire / HART, BSP thread

159 300 169 2270-P-1N-4 Range 4 m, PP body, 4..20 mA 2-wire / HART, NPT thread
159 300 170 2270-P-1N-6 Range 6 m, PP body, 4..20 mA 2-wire / HART, NPT thread

159 300 176 2270-V-1N-4 Range 4 m, PVDF body, 4..20 mA 2-wire / HART, NPT thread
159 300 177 2270-V-1N-6 Range 6 m, PVDF body, 4..20 mA 2-wire / HART, NPT thread

30

Disposal Instruction for use

13. Disposal

 Before disposing of the different material, separate it by recyclables, normal waste and special waste.
 Comply with local legal regulations and provisions when recycling or disposing of the product, the

individual components and the packaging.

 Comply with National regulations, standards and directives.

WARNING

Parts of the product may be contaminated with medium which is detrimental to health and the
environment and therefore cleaning is not sufficient!

Risk of personal and health injury caused by this medium.

If you have questions regarding the disposal of your product, please contact your national GF Piping
Systems representative.

Prior to the disposal of the product:

 Collect any medium which has escaped and dispose of it in accordance with the local

regulations.

 Neutralize residues of media in the product.
 Separate materials (plastics, metals etc.) and dispose of them in accordance with the local

regulations.

31

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warranted characteristics nor guaranteed properties nor a guaranteed durability.
They are subject to modification. Our General Terms of Sale apply.

700.277.994
GF DO_63 17_ 4 (0 6.13)
© Georg Fischer Piping Systems Ltd
CH-8201 Schaffhausen/Switzerland, 2013
Printed in Switzerland