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EN
Ex Certified Sensors
Installation of Intrinsically Safe Sensors
Manual
Applicable to Rheonics Sensor: Type-SR
Ex Certified Viscometers and Density Meters
IECEx • ATEX • JPEx
For customer use:
Write sensor identification information here and store for future
reference
Sensor Probe S/N:
Electronics S/N:
The device with which this manual was supplied may only be installed
as specified in this manual.
Doc ID: SR-EX-IM-EN-2402
Product: Type-SR Sensors - Ex certified
Revision: 4.2 Published: 02.2024
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Related Manuals for RHEONICS SR
Summary of Contents for RHEONICS SR
- Page 1 Write sensor identification information here and store for future reference Sensor Probe S/N: Electronics S/N: The device with which this manual was supplied may only be installed as specified in this manual. Doc ID: SR-EX-IM-EN-2402 Product: Type-SR Sensors - Ex certified Revision: 4.2 Published: 02.2024...
- Page 2 TRADEMARKS Rheonics is a trademark of Rheonics, Inc. Other product and company names listed in this manual are trademarks or trade names of their respective manufacturers. Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P.
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Page 3: Table Of Contents
Rheonics | Switzerland | U.S.A. English version of this manual is the only approved version from Rheonics. Installers should refer to it to confirm the correctness of information. In case of any questions contact your local partner or Rheonics support. - Page 4 Please refer to the sensor configuration data sheet before installing and operating the sensor. This is a certified Ex document. Changes must be approved by the Rheonics Ex Authorized Personnel.
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Page 5: Purpose Of This Manual
It applies only to Rheonics SR sensors labelled with Ex marking, for example with the hexagonal ATEX mark: All other versions of Rheonics SR (Type: SR) sensors should NOT be considered safe to use in areas with potential presence of explosive atmospheres. - Page 6 Suitable cabling to safely connect the Rheonics SR sensor to its associated Zener barrier(s) is to be provided by the installer. The minimum specification for the cabling to ensure intrinsic safety is given in section 5.1.
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Page 7: Ex Label Description
CE mark Notified body: TÜV Rheinland ATEX Marking Explosion classification; T class with appended “x” Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 7 Revision: 4.2, Published: February 2024 Rheonics GmbH, Klosterstrasse 19, 8406 Winterthur, Switzerland... -
Page 8: Figure 1: Example Of Sensor Labels Identifying The Markings
Non-mining equipment Category 1 (Zone 0) For gases Figure 3: ATEX marking description Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 8 Revision: 4.2, Published: February 2024 Rheonics GmbH, Klosterstrasse 19, 8406 Winterthur, Switzerland ©Rheonics. Rheonics confidential and proprietary information. -
Page 9: General Note On Category Of Protection And Operating Zone
It is the responsibility of the installer and the end user to ensure that any Rheonics SRV or SRD sensor that has been used in a Category 3 installation is not re-used for Category 1 or 2 installations. -
Page 10: Electrical Parameters Relevant To Intrinsic Safety
Ambient temperature range T T class Gas group IIC/IIB: - 00°C….+ 0°C Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 10 Revision: 4.2, Published: February 2024 Rheonics GmbH, Klosterstrasse 19, 8406 Winterthur, Switzerland ©Rheonics. Rheonics confidential and proprietary information. -
Page 11: Safe Use Of Ex Approved Equipment
5. Electrical Installation ATTENTION: Substitution of components may impair intrinsic safety. Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 11 Revision: 4.2, Published: February 2024 Rheonics GmbH, Klosterstrasse 19, 8406 Winterthur, Switzerland ©Rheonics. Rheonics confidential and proprietary information. - Page 12 Using Zener diode barriers recommended in this manual o Using alternative Zener diode barriers that meet the specifications given in this manual. Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 12 Revision: 4.2, Published: February 2024 Rheonics GmbH, Klosterstrasse 19, 8406 Winterthur, Switzerland ©Rheonics.
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Page 13: Cabling
3-wire or a 4-wire connection has been selected. For a connection with no Pt1000, the pins are assigned as in Fig. 4: Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 13 Revision: 4.2, Published: February 2024... -
Page 14: Figure 4: Pinout Of M12 Connector With No Pt1000 Installed
Signal assignment version without Pt1000 M12 connector front view Figure 4: Pinout of M12 connector with no Pt1000 installed Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 14 Revision: 4.2, Published: February 2024 Rheonics GmbH, Klosterstrasse 19, 8406 Winterthur, Switzerland... -
Page 15: Figure 5: Pinout Of M12 Connector With 4-Wire Pt1000 Connection
Signal assignment Pt1000 4-wire version M12 connector front view Figure 5: Pinout of M12 connector with 4-wire Pt1000 connection Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 15 Revision: 4.2, Published: February 2024 Rheonics GmbH, Klosterstrasse 19, 8406 Winterthur, Switzerland... -
Page 16: Figure 6: Pinout Of M12 Connector With 3-Wire Pt1000 Connection
The cable and connector selected must be rated for at least the highest ambient temperature at which the sensor will be used. They must meet the following specifications: Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 16 Revision: 4.2, Published: February 2024... -
Page 17: Zener Diode Barriers
Min. series resistance >= 198 Max. output current <40 Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 17 Revision: 4.2, Published: February 2024 Rheonics GmbH, Klosterstrasse 19, 8406 Winterthur, Switzerland ©Rheonics. Rheonics confidential and proprietary information. -
Page 18: Table 5: Coil Circuit Zener Diode Barrier Specifications For Gas Groups Iic And Iib
The Zener diode barriers must be located outside of the hazardous zone, or in a zone allowed by the manufacturer’s specification. They must be properly grounded. Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 18 Revision: 4.2, Published: February 2024... -
Page 19: Commercial Zener Diode Barriers That Fulfill These Specifications
Output power, P 9.4 mW Contact Rheonics Technical Support for information on other recommended barriers. Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 19 Revision: 4.2, Published: February 2024 Rheonics GmbH, Klosterstrasse 19, 8406 Winterthur, Switzerland... -
Page 20: Installation Diagrams
Zener diode barrier is required for the coil circuit. The advantage of this circuit is that one less Zener diode barrier is required for the installation. Although the electronics unit will function Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 20 Revision: 4.2, Published: February 2024... - Page 21 The appropriate method for bonding the sensor should be selected from among these options. Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 21 Revision: 4.2, Published: February 2024 Rheonics GmbH, Klosterstrasse 19, 8406 Winterthur, Switzerland ©Rheonics.
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Page 22: Figure 7: Variant 1 - Wiring Diagram With Pt1000 Installed, 4-Wire Pt1000 Connection
Intrinsically safe cable Hazardous Zone Figure 7: Variant 1 - Wiring diagram with Pt1000 installed, 4-wire Pt1000 connection Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 22 Revision: 4.2, Published: February 2024 Rheonics GmbH, Klosterstrasse 19, 8406 Winterthur, Switzerland... -
Page 23: Figure 8: Variant 2 - Wiring Diagram With No Pt1000 Installed
Intrinsically safe cable Hazardous Zone Figure 8: Variant 2 - Wiring diagram with no Pt1000 installed Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 23 Revision: 4.2, Published: February 2024 Rheonics GmbH, Klosterstrasse 19, 8406 Winterthur, Switzerland... -
Page 24: Figure 9: Variant 3 - Wiring Diagram With Pt1000 Installed, 3-Wire Pt1000 Connection
Intrinsically safe cable Hazardous Zone Figure 9: Variant 3 - Wiring diagram with Pt1000 installed, 3-wire Pt1000 connection Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 24 Revision: 4.2, Published: February 2024 Rheonics GmbH, Klosterstrasse 19, 8406 Winterthur, Switzerland... -
Page 25: Equipotential Bonding
Each sensor is connected to its respective barrier by means of a wire of at least 4mm cross section. On the sensor side, Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 25 Revision: 4.2, Published: February 2024 Rheonics GmbH, Klosterstrasse 19, 8406 Winterthur, Switzerland ©Rheonics. -
Page 26: Bonding To The Sensor
The other end of the cable, whose conductors are attached to the terminals of the Zener diode barriers, must also have a firm attachment of its shield to the grounding terminal of the Zener Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 26 Revision: 4.2, Published: February 2024... -
Page 27: Bonding Configurations
4mm cross section. This is shown schematically in the following figure: Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 27 Revision: 4.2, Published: February 2024 Rheonics GmbH, Klosterstrasse 19, 8406 Winterthur, Switzerland ©Rheonics. -
Page 28: Figure 11: Several Sensors Grounded To Common Grounding Point ("Star" Topology)
This arrangement is shown schematically in the following figure: Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 28 Revision: 4.2, Published: February 2024 Rheonics GmbH, Klosterstrasse 19, 8406 Winterthur, Switzerland ©Rheonics. -
Page 29: Figure 12: Individual Bonding Of Sensors To Their Zener Diode Barriers
6mm . This arrangement is shown schematically in the following diagram: Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 29 Revision: 4.2, Published: February 2024 Rheonics GmbH, Klosterstrasse 19, 8406 Winterthur, Switzerland ©Rheonics. -
Page 30: Figure 13: Hybrid, Or Multi-Drop Bonding
In any event, it is the sole responsibility of the installer to ensure proper equipotential bonding of all elements of the system, to avoid creation of a potentially unsafe system due to improper bonding. Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 30 Revision: 4.2, Published: February 2024 Rheonics GmbH, Klosterstrasse 19, 8406 Winterthur, Switzerland ©Rheonics. -
Page 31: Maintenance
7. Returning Equipment to the factory Instructions for Returning Your Instrument for Service The following information will help you return your instrument to Rheonics and will ensure that your order is processed promptly. To request details, contact your local Rheonics distributor or contact one of our offices directly. -
Page 32: Intrinsic Safety Certificates
J. Goodbread 27.02.2024 D. Brunner S. Kumar P. Pacherrez Rheonics Type-SR Sensor Installation and Intrinsic Safety Manual – Doc ID: SR-EX-IM-EN-2402 P. 32 Revision: 4.2, Published: February 2024 Rheonics GmbH, Klosterstrasse 19, 8406 Winterthur, Switzerland ©Rheonics. Rheonics confidential and proprietary information.
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