Burkert 8311 User manual

Operating Instructions
PRESSURE CONTROLLER
8311
© Bürkert 2000–2022 Subject to technical change without notice
00559848_2206_Ind_F

ENGLISH ENGLISH
Pressure controller 8311
Table of contents
1 SAFETY INSTRUCTIONS����������������������������������������������������������������������������������������������������� 4
1.1 Utilisation................................................................................................................... 5
1.2 Precautions at installation and commissioning ........................................................... 6
1.3 Conformity to standards and directives...................................................................... 6
1.4 Conformity to the pressure equipment directive ......................................................... 6
2 DESCRIPTION���������������������������������������������������������������������������������������������������������������������� 8
2.1 Design....................................................................................................................... 8
2.2 Measuring principle ................................................................................................... 8
2.3 Available versions ...................................................................................................... 9
2.4 Accessories............................................................................................................... 9
2.5 Description of the label of the controller 8311 ............................................................ 9
3 TECHNICAL DATA �������������������������������������������������������������������������������������������������������������� 10
4 INSTALLATION ������������������������������������������������������������������������������������������������������������������� 12
4.1 General recommendations....................................................................................... 12
4.2 Mounting on the pipe............................................................................................... 12

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4.3 Electrical connection................................................................................................ 13
4.3.1 Cable plugs ............................................................................................................. 13
4.3.2 Version with transistor output (NPN / PNP) .............................................................. 14
4.3.3 Version with relay output.......................................................................................... 15
5 PROGRAMMING���������������������������������������������������������������������������������������������������������������� 16
5.1 General recommendations....................................................................................... 16
5.2 Functionalities.......................................................................................................... 16
5.3 Programming keys................................................................................................... 17
5.4 Default conguration................................................................................................ 17
5.5 Normal mode .......................................................................................................... 18
5.6 Possible switching modes of the 8311..................................................................... 19
5.7 Calibration mode ..................................................................................................... 20
5.8 Simulation mode...................................................................................................... 23
6 MAINTENANCE������������������������������������������������������������������������������������������������������������������ 24
6.1 Cleaning .................................................................................................................. 24
6.2 Error messages ....................................................................................................... 25
7 ANNEX�������������������������������������������������������������������������������������������������������������������������������� 26
7.1 Examples of connections with the 8311................................................................... 26

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Pressure controller 83111 SAFETY INSTRUCTIONS
-Always respect the safety instructions marked by the symbol
opposite as well as those included in the manual.
- Ensure the max. pressure the application can reach is within
the chosen pressure range. It is recommended to equip the
installation with a pressure relief valve.
Pressure range [bar] Max� admissible pressure Destruction pressure
0...2 6 7
0...5 12 15
0...10 25 30
0...20 50 60
0...50 120 150
- Theunitsonthedisplayashwhenthemax.pressureofthe
range is exceeded.

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1.1 Utilisation
- The 8311 controller has only been designed to measure the relative
pressure of a liquid or a gas.
- The following units are available to display the measured pressure:
bar, kPa, psi, mPa, Torr, mmHg, atm, MWS, mbar.
When using an absolute pressure unit (Torr, mmHg, atm, MWS),
beawarethattheairpressuredisplacement(about1013mbar)is
not taken into account by the device.
- The measuring element must be solidly screwed onto its support.
There will be no manufacturer warranty for damages caused by
unexpected handling or wrong usage of the device. The warranty on
the device becomes invalid if any modication or change is made on
the device.
The device should only be installed and repaired by specialist
sta.Theuserisnotallowedtoworkonthecablesinsidethe
housing.Ifanydicultiesmayoccurwiththedeviceduring
installation,pleasecontactyournearestBürkertsalesocefor
assistance.

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Pressure controller 8311
1.2 Precautions at installation and commissioning
- When the device is powered and the cover is open, protection
against electric shocks is not eective.
- Always ensure the materials in contact with the medium to mea-
sure are chemically compatible.
- To clean the device, only use chemically compatible products.
- Do not insert any object (screwdriver for instance) inside the sensor
body. If the body is dirty, use compressed air to clean it.
When dismounting the controller from the pipe, take all the ne-
cessary precautions linked to the process.
1.3 Conformity to standards and directives
The applied standards, which verify conformity with the EU direc-
tives, can be found on the EU-type examination certicate and/or the
EU declaration of conformity (if applicable).
1.4 Conformity to the pressure equipment directive
- Make sure the device materials are compatible with the uid.
- Make sure the pipe DN and the PN are adapted for the device.
The device conforms to Article4, Paragraph1 of the Pressure Equip-
ment Directive 2014/68/EU under the following conditions:
1 SAFETY INSTRUCTIONS

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- Device used on a pipe (PS=maximum admissible pressure;
DN=nominal diameter of the pipe)
Type of uid Conditions
Fluid group1, Article4, Paragraph1.c.i DN≤25
Fluid group2, Article4, Paragraph1.c.i DN≤32
or PSxDN≤1000
Fluid group1, Article4, Paragraph1.c.ii DN≤25
or PSxDN≤2000
Fluid group2, Article4, Paragraph1.c.ii
DN≤200
or PS≤10
or PSNxDN≤5000
- Device used on a vessel (PS=maximum admissible pressure)
Type of uid Conditions
Fluid group1, Article4, Paragraph1.a.i PS≤200bar
Fluid group2, Article4, Paragraph1.a.i PS≤1000bar
Fluid group1, Article4, Paragraph1.a.ii PS≤500bar
Fluid group2, Article4, Paragraph1.a.ii PS≤1000bar

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Pressure controller 83112 DESCRIPTION
2.1 Design
The pressure controller 8311 is made up of an electronic module
and a measuring element. It may switch a solenoid valve, activate an
alarm or establish a control loop.
The switching point can be adjusted by means of the three keys
located under the display.
The controller housing can be turned by 180°.
The controller 8311 can be inserted in a tting before being mounted
on any type of pipe.
The electrical connection is carried out via an EN175301-803
connector and/or a steerable M12 multipin connector.
2.2 Measuring principle
The controller 8311 uses a piezo-resistive ceramic cell.

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2.3 Available versions
2.4 Accessories
Accessory Article number
5-pin M12 cable plug, to be wired 917116
5-pin M12 cable plug, moulded on a shielded cable (2m) 438680
EN175301-803 cable plug (type2518) with cable gland 572264
EN175301-803 cable plug (type2509) with NPT1/2" reduction 162673
Supply voltage Output Electrical connection Article number
G1/2 NPT1/2 Rc1/2
12...30VDC NPN and PNP M12 connector 439932 439940 439936
12...30VDC Relay M12 and EN175301-803 connectors 439935 439943 439939
2.5 Description of the label of the controller 8311
1. Measured quantity and type of controller
2. Power supply
3. Output features
4. Pressure range
5. Serial number
6. Protection class: protective insulation
7. Manufacturing code
8. Article number
9. Sensor material
PRESSURE 8311
CERAMIC 12-30VDC
REL : 230VAC/3A
0-10 bar
S-N:1110
439935 W45LL
Made in France
1
2
3
5
789 6
4

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Pressure controller 8311
General features
Pipe diameter Any type of pipe with a 1/2" threaded connection piece (G, NPT or Rc)
Medium temperature −20°C...+100°C, +100°C with a max. ambient temperature of +40°C
Measuring range 0...10bar, standard
0...2bar, 0...5bar, 0...20bar and 0...50bar on request
Accuracy ±1.5% of the full scale (full scale = max. value of the measuring range)
Repeatability
- typical 0.25%
- max. 1%
Measuring element Ceramic cell
Protection rating IP65 connectors being plugged-in and tightened
Electrical features
Installation class
(overvoltage class) 2
Power supply 12...30VDC
Current consumption
Version with PNP output Max. 750mA + consumption of the load, if the PNP output is connected
Max. 50mA + consumption of the load, if the PNP output is not connected
Version with relay output Max. 80mA, without load
Protection against
polarity reversal Yes
Transistor output NPN and PNP, open collector, 700mA max., NPN output: 0.2...30VDC and PNP output:
supply voltage (see example in the Annex)
or
Relay output 250VAC, max. 3A or 30VDC, max. 3A; programmable
3 TECHNICAL DATA

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Protection against
short-circuits Yes for the transistor output
Type of cable recommended Shielded, wire section: 0.14...0.5mm2
Electrical connection
NPN/PNP version 5-pin M12 cable plug (not supplied)
Relay version EN175301-803- (supplied)1) and 5-pin M12- (not supplied) cable plugs
1) EaseOn with connector type2511 on request
Materials
Housing Polycarbonate, ber glass reinforced
Front plate Polyester
Parts in contact
with the medium Stainless steel 316L (DIN 1.4404), FKM in the standard versions (EPDM as an option),
ceramic cell (Al2O3)
Environment
Ambient temperature 0°C...+60°C, max.+40°C if the uid temperature is near +100°C
Relative humidity <80%, non condensated

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Pressure controller 83114 INSTALLATION
4.1 General recommendations
Always check the chemical compatibility of the materials the con-
troller is made of with the products it may be in contact with, for
instance: alcohols, strong or concentrated acids, aldehydes, bases,
esters, aliphatics, aromatics, ketones, aromatics or halogenated
hydrocarbons, oxidizing agents and chlorinated products. For more
information, please contact your Bürkert sales oce.
4.2 Mounting on the pipe
The pressure controller 8311 can be inserted in a tting before being
mounted on any type of pipe.
During mounting, follow the instructions given with the tting.
Always replace the cover
in its initial position.
Do not tighten the controller
using the housing;
use an appropriate tool.
For a G1/2"-version, ensure
the gasket is in place
Do not unscrew
the metallic part
from the pipe when
readjusting the
housing. ENTER
O
U
T0....9

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4.3 Electrical connection
Always ensure the power supply is switched o before working on the
device. All the cable plugs must be plugged out. Use:
- a shielded cable with an operating temperature >+80°C.
- a high quality voltage supply (ltered and regulated).
Install the following security devices:
- forthepowersupply:1A-fuse
- fortherelay:amax.3A-fuseandacircuitbreaker(depending
on the application).
4.3.1 Cable plugs
12
1
2
3
4
5
2518 cable plug (supplied)
- Unscrew the pressure screw[1] and remove the pressure
ring[2] and the seal[3].
- Remove contact holder[5] from the cover[4].
- Insert the cable into pressure screw[1], through the pressure
ring[2], through the seal[3] and nally through the cover[4].
- Connect the wires on the contact holder[5].
- Position the contact holder[5] in steps of 90° then put it back
into cover[4], pulling gently on the cable so that the wires do
not clutter the housing.
- Tighten the pressure screw[1] (1.5...2Nm).
- Place the seal[6] between the connector and the xed
connector on the device and then plug the type 2518
connector into the xed connector.
- Insert and tighten the central screw[7] (0.5...0.6Nm) to
ensure tightness and correct electrical contact.
Multipin M12 cable plug
(not supplied)
- Loosen threaded ring[1]
- Remove part[2] from the connector
- Wire acc. to pin assignment (see 4.3.2
or 4.3.3).
6
7

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Pressure controller 83114 INSTALLATION
4.3.2 Version with transistor output (NPN / PNP)
4
5
3
12
0VDC
V+
(12...30VDC)
PNP
0 V
V+ V+
IN
0 V
(*)
NPN output PNP output
Sensor Sensor Receiver
Load
Receiver
Load
NPN / PNP wiring of the M12
xed connector
PNP transistor output
NPN transistor
output
Output
Output
(*) Functional earth
Pin number of the M12 cable available
as an accessory (article nr� 438680) Wire colour
1 brown
2 white
3 blue
4black
5green/yellow or grey
NPN
0 V
V+ V+
IN
0 V
(*)
The controller is tted with a steerable M12 xed
connector:
Unfasten counternut. Turn the xed connector to
the right position, but by max. 360° to avoid twisting
of the cables inside the housing. Fasten counternut
using the appropriate tool while maintening the xed
connector in the right position.

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4
5
3
12
0VDC
V+
(12...30VDC)
4.3.3 Version with relay output
1
3
2
The controller is tted with a steerable M12 xed connector:
Unfasten counternut. Turn the xed connector to the right position, but by max. 360° to
avoid twisting of the cables inside the housing. Fasten counternut using the appropriate
tool while maintening the xed connector in the right position.
Operating safety
When the voltage at the relay terminals is higher than 24V and the
cable plugs are not correctly plugged-in and tightened, there is a risk
to electrocute yourself.
Always check all the cable plugs before powering the device to en-
sure the good operating of the device.
Wiring of the EN175301-803 xed
connector, relay output
Common
Not connected
Normally Closed
Normally Open
Not connected
Not connected
Wiring of the M12 xed connector
(12...30VDC power supply)

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Pressure controller 8311
5.1 General recommendations
Keep in mind that the process may be inuenced by all the parameter
settings you make. Fill-in the table on page22 with your settings of
the controller.
5.2 Functionalities
The device has three operating modes:
Normal mode
Display of the measured pressure and the switching thresholds
programmed. From the Normal mode, you can access the Calibration
and Simulation modes.
Calibration mode
Access to the programming of all the parameters (unit, zero adjust-
ment, K-factor, calibration through the „Teach-in“ feature, output,
lter, bargraph). From the Calibration mode, you can go back to the
Normal Mode.
Simulation mode
Entering a theoretical pressure value to test the conguration pro-
grammed in the Calibration mode. From the Simulation Mode, you
can go back to the Normal mode.
5 PROGRAMMING

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5.3 Programming keys
5.4 Defaultconguration
At the rst powering up, the conguration of the controller 8311 is as follows:
Pressure unit: bar
Output: Hysteresis
OLO: 0.2bar
OHI: 1bar
DEL: 0s
Filtre: 2
BGLO: 0bar
BGHI: Max. value of the measuring range
Extension board: No
To display the measured value and the
conguration (8characters:
4numeric and 4alphanumeric charact.)
To modify the digital value (0…9);
To go back to the previous
function. To select the character;
To go to the next function.
To validate a function;
To validate the entered data.
To indicate the status of the
switching output (red LED)

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Pressure controller 8311
+
> 5 s
+
> 5 s
3
1
++
> 5 s
ENTER
ENTER
0......9
0......9
ENTER
0......9
2
5 PROGRAMMING
5.5 Normal mode
0.000
BAR
1.000
O HI
0.200
O LO
Press the keys
simultaneously
Display of the measured
pressure.
N.B.: When the units ash,
the max. value of the pressure
range has been exceeded.
To display the high
threshold value (O HI).
To go back to the previous
function.
To display the low threshold
value (O LO).
To go to the next function.
(see page20:
Calibration mode)
(see page23:
Simulation mode)

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5.6 Possible switching modes of the 8311
Hysteresis mode
The change of state occurs when a threshold is detected
(increasing pressure: high threshold (OHI) to be detected,
decreasing pressure: low threshold (OLO) to be detected).
Window mode
The change of state occurs when any
threshold is detected.
The delay (DEL) is set for the both switching
thresholds. The switching only occurs when
either threshold value (OHI - OLO) is exceeded
for a duration higher than the DEL delay.
Switching examples of the 8311 depending on
the pressure and the switching mode chosen
Pressure
ON
OFF OLOOHI
2 s
OHI
OLO
2 s 2 s
DEL = 0 s
DEL = 2 s
DEL = 0 s
DEL = 2 s
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OUT
t
Hysteresis mode
Window mode
Not inverted
Not inverted
Inverted
Inverted
Not inverted
Not inverted
Inverted
Inverted
Contact Contact
Pressure Pressure
Not inverted
Not inverted
Inverted
Inverted
Contact Contact
Pressure Pressure
ON
OF
FOLO OHI
ON
OFF OLOOHI
ON
OF
F
OLOOHI

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Pressure controller 8311
0.500
BAR
1.500
0 HI
OUT
OHI>
OLO
0......9
ENTER
1
BRGR
9
FILT
0.010
BG LO
ENTER
BG HI
0......9
mbar
mode
mode
ENTER
0......9
2
0 LO
NO
INV
99
DEL
YES
INV
ENTER
ENTER
ENTER
ENTER
ENTER
0......9
0......9
ENTER
ENTER0......9 0......9
0......9
ENTERENTERENTER
0......9
ENTER
ENTERENTER
ENTER
NO
EXT
ENTERENTER
EXT
0......9
.
.
.
1.900
NO
ZERO
YES
ZERO
ENTER
0......9
ENTERENTER
ZERO
ZERO
15.20
ZERO
ENTER
NO
TEAC
YES
TEAC
ENTER
0......9
ENTERENTER
KFAC
TEAC
8.073
BAR
ENTER
0.534
KFAC
ENTER
0.534
KFAC
ENTER
ENTER
ENTER
0......9
0......9
*
*
**
**
FILT
END
05
RANG
ENTER
0......9
UNIT
5 PROGRAMMING
5.7 Calibration mode
To change the pressure unit
(bar, kPa, psi, mPa, Torr,
mmHg, atm, MWS, mbar).
To choose:
- the switching mode of
the output (Hysteresis or
Window, see page19)
- the low (O LO) and high
(O HI) switching thresholds
- whether the switching
mode is inverted or not (INV,
see page19)
- the delay before switching
(DEL, in seconds)
To go back to the previous
function.
To go to the next function.
To adjust the controller zero
point, at nil pressure.
To enter the K-factor or
have it calculated through
the Teach-in feature. The K
factor value is indicated on
the test certicate.
To enter the full scale value of
the measuring range (RANG).
yes
no
If you change the pressure unit, change
the switching threshold values, too.
The K factor corresponds to the pressure cell sensitivity (in mV/bar).