KROHNE SMARTPAT ORP 8150 Wiring diagram

Digital ORP sensor
Category
II 1 G
EPL Ga
SMARTPAT ORP 8150
SMARTPAT ORP 8150SMARTPAT ORP 8150
SMARTPAT ORP 8150 Supplementary Instructions
Supplementary InstructionsSupplementary Instructions
Supplementary Instructions
© KROHNE 03/2016 - 4003048503 - MA SMARTSENS ORP 8150 R03 en AD

CONTENTS
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SMARTPAT ORP 8150
1 Safety instructions 3
1.1 General notes ................................................................................................................... 3
1.2 EU conformity ................................................................................................................... 3
1.3 Approval according to the IECEx scheme ........................................................................ 3
1.4 Safety instructions............................................................................................................ 4
2 Device description 5
2.1 Device description ............................................................................................................ 5
2.2 Marking............................................................................................................................. 6
2.3 Flammable products ........................................................................................................ 8
2.4 Device category ................................................................................................................ 8
2.5 Protection type for gas hazardous areas......................................................................... 9
2.6 Temperature classes........................................................................................................9
2.7 Electrical data................................................................................................................. 10
3 Installation 11
3.1 Installation...................................................................................................................... 11
4 Electrical connections 12
4.1 General notes ................................................................................................................. 12
4.2 Power supply .................................................................................................................. 12
4.3 Inputs/outputs ................................................................................................................ 12
4.4 Grounding and equipotential bonding............................................................................ 12
5 Operation 14
5.1 Starting up for the first time .......................................................................................... 14
5.2 Operation ........................................................................................................................ 14
5.3 Electrostatic charge .......................................................................................................14
6 Service 15
6.1 Maintenance ................................................................................................................... 15
6.2 Dismantling .................................................................................................................... 15

SAFETY INSTRUCTIONS 1
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1.1 General notes
This additional Ex instruction applies to explosion-protected versions of the sensors with the
marking II 1 G. It completes the standard documentation for non-explosion protected versions.
The information given in these instructions contains only the data relevant to explosion
protection. The technical details given in the standard documentation for the non-explosion
protected versions remain unchanged unless they will be excluded or replaced by this
instruction.
1.2 EU conformity
The manufacturer declares with the EC declaration of conformity on his own responsibility
conformity with the protection goals of directive 2014/34/EU for use in hazardous areas with gas.
Conformity with harmonised standards was checked in accordance with EN 60079-0:2012 and
EN 60079-11:2012.
The EU declaration of conformity is based on the EC type examination certificate of the
Physikalisch Technische Bundesanstalt (PTB):
You can download the EC Type Examination Certificate from the manufacturer's website.
1.3 Approval according to the IECEx scheme
Conformity with IECEx standards was tested in accordance with the IECEx Certification Scheme
for Explosive Atmospheres acc. to IEC 60079-0:2011 and IEC 60079-11:2012. The number of the
IEC certificate is:
You can download the IEC certificate from the manufacturer's website.
PTB 13 ATEX 2018 X
PTB 13 ATEX 2018 XPTB 13 ATEX 2018 X
PTB 13 ATEX 2018 X
IECEx PTB 13.0036 X
IECEx PTB 13.0036 XIECEx PTB 13.0036 X
IECEx PTB 13.0036 X

1 SAFETY INSTRUCTIONS
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1.4 Safety instructions
If these instructions are not followed, there is a risk of explosion.
Assembly, installation, start-up and maintenance may only be performed by personnel trained in
explosion protection!
CAUTION!
Operating conditions and place of installation may require compliance with additional standards,
directives or laws. The responsibility for compliance rests solely with the operator or his agent.

DEVICE DESCRIPTION 2
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2.1 Device description
The sensor is designed to measure the oxidation reduction potential (ORP) in liquids. It has a
connection for a 4...20 mA current output with HART
®
communication.
The connection is designed as a plug connector and at the same time supplies the sensor with
power.
The PG 13.5 thread is used as process connection.
1 VP2 connector
2 Nickel-plated brass body
3 PG 13.5 thread
4 Washer
5 O-ring
6 Glass shaft
7 Diaphragm
8 Platinum electrode

2 DEVICE DESCRIPTION
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2.2 Marking
The marking of the sensor type SMARTPAT ORP 8150 is shown on the nameplates below. The
main plate is on the main part of the device and there is an additional marking on the glass.
Figure 2-1: Position of the nameplates on the sensor
1 Nameplate on the sensor connector with ex data
2 Marking on the glass
Figure 2-2: Example nameplate ATEX
1 Manufacturer
2 Device name
3 TAG number, order code, serial number
4 Ex data acc. to PTB 13 ATEX 2018 X
5 Manufacturing date
6 Electronic/electric device waste marking, observe the installation and operating instructions

DEVICE DESCRIPTION 2
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Figure 2-3: Example nameplate IECEx
1 Manufacturer
2 Device name
3 TAG number, order code, serial number
4 Ex data acc. to IECEx PTB 13.0036 X
5 Manufacturing date
6 Electronic/electric device waste marking, observe the installation and operating instructions
Figure 2-4: Marking on the glass shaft
1 Manufacturer
2 Type

2 DEVICE DESCRIPTION
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2.3 Flammable products
Atmospheric conditions
An explosive atmosphere is a mixture of air and flammable gases, vapours, mists or dusts under
atmospheric conditions. It is defined by the following values:
T
atm
= -20...+60°C / -4...+140°FandP
atm
= 0.8...1.1 bar / 11.6...15.9 psi
Outside of these ranges, for most mixtures no key figures are available for the ignition
behaviour.
Operating conditions
Outside of atmospheric conditions, the explosion protection according to ATEX directive –
regardless of the zone assignment –is not applicable due to the lack of key safety data.
2.4 Device category
The sensor is designed in category II 1 G for use in zone 0.
For more information refer to chapter "Flammable products".
DANGER!
The operator is responsible to ensure that the sensor is operated safely in terms of temperature
and pressure of the products used. In case of operation with flammable media the sensor must
be included in the periodic pressure tests of the plant.
INFORMATION!
Definition of zone 0 according to EN 1127-1:
An area in which an explosive atmosphere, as a result of the mixture of flammable substances in
the form of gas, vapours or mist with air, is continuously or for long periods or frequently
present.

DEVICE DESCRIPTION 2
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2.5 Protection type for gas hazardous areas
In type of protection "Intrinsic Safety" the sensor meets the requirements of EN 60079-11. The
explosion protection is ensured by limitation of the current and voltage so that no ignitable
energy can occur.
The marking of the sensor is:
II 1G Ex ia IIC T6...T1
II 1G Ex ia IIC T6...T1II 1G Ex ia IIC T6...T1
II 1G Ex ia IIC T6...T1
2.6 Temperature classes
The permissible temperature range depending on the temperature class of the sensor is:
Components of the Ex marking and their definition
II
IIII
II Group II explosion protection
1
11
1Equipment category 1
G
GG
GGas explosion protection
Ex ia
Ex iaEx ia
Ex ia Intrinsically safe equipment, protection level ia
IIC
IICIIC
IIC Gas groups IIA, IIB, IIC approved
T6...T1
T6...T1T6...T1
T6...T1 Temperature class range T6...T1
Temperature
class
Permissible ambient or product
temperature in [°C]
Permissible ambient or product
temperature in [°F]
T1 -10...+85°C14...+185°F
T2 -10...+85°C14...+185°F
T3 -10...+85°C14...+185°F
T4 -10...+85°C14...+185°F
T5 -10...+55°C14...+131°F
T6 -10...+55°C14...+131°F
The permissible product temperature range can vary depending on the sensor used. Consult standard
documentation for this information.

2 DEVICE DESCRIPTION
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2.7 Electrical data
Connect the sensor only to intrinsically-safe certified circuits. Observe the following maximum
values for the sensor when connecting:
•U
i
=30V
•I
i
= 120 mA
•P
i
=1.0W
•L
i
=10µH
•C
i
=5nF
The internal electrode circuit is limited to the following maximum values:
•U
o
=7.8V
•I
o
=10mA
•P
o
=20mW
CAUTION!
Capacity and inductance of the connecting cable have to be considered.
INFORMATION!
For information about nominal data and the HART interface consult the standard documentation.