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1. GENERAL PRECAUTIONS ...................................................................................................................................................2
2. TRANSMITTERS WITH AMPLIFIED ANALOG OUTPUT .....................................................................................................2
2.1. Standard installation (recommended) ...........................................................................................................................2
2.2. Electrical connections ...................................................................................................................................................3
2.3. Interfaces with SRP/CS and voltage devices ................................................................................................................3
3. TECHNICAL SPECIFICATIONS ............................................................................................................................................4
3.1. EMC Tests performed for mobile hydralic and automotive applications ......................................................................6
3.2. EMC Tests performed for industrial applications ...........................................................................................................7
4. SAFETY MANUAL (for SIL2 / PL d transducers only) .......................................................................................................8
4.1. Application .....................................................................................................................................................................8
4.3. Restrictions of use .......................................................................................................................................................9
4.4. Maintenance and periodic inspections ..........................................................................................................................9
4.5. Indication of response time ...........................................................................................................................................9
4.6. Suspension of the safety function ..............................................................................................................................10
4.7. Indications and alarms ................................................................................................................................................10
4.8. Failures and troubleshooting ....................................................................................................................................... 11
80778_Manual of Electrical Installation for Pressure Probes KM_UL_01-2024_ENG
Manual of Electrical Installation for
Pressure Probes KM series
CONTENTS
Code 80778
Edition 01-2024 (translation of original version)
1
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Summary of Contents for gefran KM Series
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Page 1: Table Of Contents
Manual of Electrical Installation for Pressure Probes KM series Code 80778 Edition 01-2024 (translation of original version) CONTENTS 1. GENERAL PRECAUTIONS ..............................2 2. TRANSMITTERS WITH AMPLIFIED ANALOG OUTPUT .....................2 2.1. Standard installation (recommended) ...........................2 2.2. Electrical connections ..............................3 2.3. Interfaces with SRP/CS and voltage devices ........................3 3. -
Page 2: General Precautions
Sensors must be powered with non distributed networks. (*) See further limitations for Safety applications at paragraph 4 on page 8. 2. TRANSMITTERS WITH AMPLIFIED ANALOG OUTPUT Transducers: KM series Outputs: 4…20 mA; 0…10 V; 1…5 V; 0,5…4,5 V ratiometric. Installation remarks - The transducer must be grounded (normally through the machine body or equipment it is installed on). -
Page 3: Electrical Connections
2. Concerning M12, the pressure transducers with measuring range of 60 bar and below require vented cable and/or mating connector, to allow the compensation of the atmospheric pressure reference. compensation of the atmospheric pressure reference. 2.2. Electrical connections 2.2. Electrical connections ELECTRICAL CONNECTION - Connection diagrams ELECTRICAL CONNECTION - Connection diagrams Z - M12 x 1... -
Page 4: Technical Specifications
3. TECHNICAL SPECIFICATIONS ± 0.15% FS (typ); ± 0.25% FS (max) Non Linearity (BFSL) + 0.1% FS (typ); + 0.15% FS (max) Hysteresis ± 0.025% FS (typ); ± 0.05% FS (max) Repeatability ± 0.15% FS (typ); ± 0.25% FS (max) Zero offset tolerance ±... - Page 5 RANGE 1000 (Bar) Overpressure 1200 1200 (Bar) Burst pressure 1000 1500 1500 1500 (Bar) 4…20 mA 1..5 Vdc 0…10 Vdc 0,5...4,5 ratiometric Nominal Output signal (short circuit protected) (2 wires) (3 wires) (3 wires) (3 wires) Supply voltage, polarity protected 8-32 Vdc 8-32 Vdc 12-32Vdc...
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Page 6: Emc Tests Performed For Mobile Hydralic And Automotive Applications
3.1. EMC Tests performed for mobile hydralic and automotive applications 2015/ 208/EU Test name Test parameter 14982 Art. 19, 13766-1 13766-2 An. XV 30-75 MHz, 64-54 dBμV/m Broadband 75-400 MHz, 54-65 dBμV/m NO REQ. radiated emission 400-1000 MHz, 65 dBμV/m 30-75 MHz, 54-44 dBμV/m Narrowband 75-400 MHz, 44-55 dBμV/m... -
Page 7: Emc Tests Performed For Industrial Applications
3.2. EMC Tests performed for industrial applications Gefran KM products are tested also against industrial standard according to 2014/30/EU Directive (EMC): • EN 61326-1 “Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 1 general requirements”... -
Page 8: Safety Manual (For Sil2 / Pl D Transducers Only)
4. SAFETY MANUAL (for SIL2 / PL d transducers only) 4.1. Application The pressure sensor KM performs the following safety function: Measurement and transduction of the read pressure value, with generation of a current or voltage signal within the stated measurement uncertainty (see Sec. -
Page 9: Restrictions Of Use
The diagram “A” (Fig. 1) shows a possible application: the sensor detects the pressure and transduces it in an analog electrical signal proportional to the value of the measured value; the SRP / CS compares the signal with the one set as the alarm threshold: in case of exceeding the threshold it shall disable the elements of pressure generation. -
Page 10: Suspension Of The Safety Function
No suspension or bypass of the safety function is possible in the KM series transducer. 4.7. Indications and alarms The KM Series pressure sensors in the case of some specific anomalies provide output saturation (positive HIGH or negative LOW). Table 1 indicates the detected failures and their raw effect on output (HIGH, LOW) Table 2 indicates, for each type of output, the specific alarm values and accepted limits Table 1. -
Page 11: Failures And Troubleshooting
8 - If the sensor works fine, mount the sensor in the seat following instruction manua via Sebina, 74 - 25050 PROVAGLIO D’ISEO (BS) - ITALIA tel. 0309888.1 - fax. 0309839063 - Internet: http://www.gefran.com 80778_Manual of Electrical Installation for Pressure Probes KM_UL_01-2024_ENG...
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