KROHNE H250 M40 Safety Manual
Variable area flowmeter
Hide thumbs
Also See for H250 M40:
- Handbook (100 pages) ,
- Supplementary instructions manual (24 pages) ,
- Service manual (10 pages)
Table of Contents
Advertisement
Quick Links
Download this manual
See also:
Handbook
Advertisement
Table of Contents
Related Manuals for KROHNE H250 M40
Summary of Contents for KROHNE H250 M40
- Page 1 H250 M40 H250 M40 H250 M40 H250 M40 Supplementary instructions Supplementary instructions Supplementary instructions Supplementary instructions Variable area flowmeter Safety manual © KROHNE 04/2013 - 4000904202 MA H250 M40 SIL R02 en...
-
Page 2: Table Of Contents
6.2 Proof tests ........................10 7 Safety-related characteristics 7.1 Assumptions ........................11 7.2 Specific safety-related characteristics ................12 8 Annex 8.1 Annex 1 ........................... 16 8.2 Annex 2 ........................... 17 9 Notes www.krohne.com 04/2013 - 4000904202 MA H250 M40 SIL R02 en... -
Page 3: Introduction
• EMC directive 2004/108/EC and NAMUR recommandation NE21 • ATEX directive 94/9/EC • PED directive 97/23/EC For further information please refer to the H250 M40 Declaration of Conformity at the Downloadcenter of the KROHNE-Website www.krohne.com. 1.2 User benefits Use for •... -
Page 4: Terms And Definitions
IEC 60654-1 [°C / 365 days] Average (external) Mean (inside box) Profile 2 Low power electrical (2-wire) field products have minimal self heating and are subjected to daily temperature swings. www.krohne.com 04/2013 - 4000904202 MA H250 M40 SIL R02 en... -
Page 5: Description
The height of the float in the measuring unit, which depends on the float, is transmitted by a magnetic coupling and displayed on a scale. Strong deflecting magnetic fields can lead to deviations in the measured value. 04/2013 - 4000904202 MA H250 M40 SIL R02 en www.krohne.com... -
Page 6: Description Of The Subsystem
H250 M40 3.2 Description of the subsystem H250 M40 - versions 1 Standard version 2 HT version H250 M40 with electrical built ins 1 Version with K1/K2 2 Version with ESK4 www.krohne.com 04/2013 - 4000904202 MA H250 M40 SIL R02 en... -
Page 7: Specification Of The Safety Function
SPECIFICATION OF THE SAFETY FUNCTION H250 M40 4.1 Description of the failure categories In order to judge the failure behaviour of the variable area flowmeters H250 M40, the following definitions for the failure of the flowmeter were considered: Fail - Safe Failure that causes the subsystem to go to the defined fail-safe state without a demand from process. -
Page 8: Project Planning
• The parameters given by the FMEDA are considered as planning support. The end user is responsible for the overall functional safety of the application. • For help to find the correct order text see annex 1. www.krohne.com 04/2013 - 4000904202 MA H250 M40 SIL R02 en... -
Page 9: Life Time / Proof Tests
8 to 12 years. KROHNE recommends an operational life time for variable area flowmeters no longer than 10 years in SIL rated applications. However, if the user is monitoring the instruments over their life time demonstrating the required results (e.g. -
Page 10: Proof Tests
1. Bypass the safety PLC or take other appropiate action to avoid a false trip. 2. Perform 5-point calibration verification of the variable area flowmeter H250 M40. 3. Force the variable area flowmeter H250 M40 to go to the high alarm current output and verify that the analog current reaches that value. -
Page 11: Safety-Related Characteristics
• All modules are operated in the low demand mode of operation. • External power failure rates are not included. • The HART® protocol at H250 M40 is only used for setup, calibration and diagnostics purpose, not during safety operation mode. -
Page 12: Specific Safety-Related Characteristics
Stress profile 2 (low stress) 0 FIT 81 FIT 10 FIT 112 FIT 293 years SIL1 Stress profile 4 (high stress) 1 year 2 years 5 years T[Proof] 4 3.68*E-04 7.02*E-04 1.70*E-03 www.krohne.com 04/2013 - 4000904202 MA H250 M40 SIL R02 en... - Page 13 6 The switching contact output is connected to a standard NAMUR switching amplifier (e.g. Pepperl+Fuchs KF**-SR2-Ex*.W). The failure rates of the amplifier are not included in the listed failure rates. 04/2013 - 4000904202 MA H250 M40 SIL R02 en www.krohne.com...
- Page 14 6 The switching contact output is connected to a standard NAMUR switching amplifier (e.g. Pepperl+Fuchs KF**-SR2-Ex*.W). The failure rates of the amplifier are not included in the listed failure rates. www.krohne.com 04/2013 - 4000904202 MA H250 M40 SIL R02 en...
- Page 15 Instrumented Function (SIF) in order to determine suitability for a specific Safety Integrity Level (SIL) For SIL1 applications, the PFD value needs to be < 10 For SIL2 applications, the PFD value needs to be < 10 04/2013 - 4000904202 MA H250 M40 SIL R02 en www.krohne.com...
-
Page 16: Annex 1
SK - SIL compliant limit switches acc. to IEC 61508:2010 SE - SIL compliant current output acc. to IEC 61508:2010 * positions which are not needed are omitted (no blank positions) www.krohne.com 04/2013 - 4000904202 MA H250 M40 SIL R02 en... -
Page 17: Annex 2
KFA6-SR2-Ex1.W Pepperl+Fuchs 230 VAC relay KFA5-SR2-Ex1.W Pepperl+Fuchs 115 VAC relay KFD2-SR2-Ex1.W Pepperl+Fuchs 24 VDC relay KFA6-SR2-Ex2.W Pepperl+Fuchs 230 VAC relay KFA5-SR2-Ex2.W Pepperl+Fuchs 115 VAC relay KFD2-SR2-Ex2.W Pepperl+Fuchs 24 VDC relay 04/2013 - 4000904202 MA H250 M40 SIL R02 en www.krohne.com... -
Page 18: Notes
NOTES H250 M40 www.krohne.com 04/2013 - 4000904202 MA H250 M40 SIL R02 en... - Page 19 NOTES H250 M40 04/2013 - 4000904202 MA H250 M40 SIL R02 en www.krohne.com...
- Page 20 • Measuring systems for the marine industry Head Office KROHNE Messtechnik GmbH Ludwig-Krohne-Str. 5 47058 Duisburg (Germany) Tel.:+49 (0)203 301 0 Fax:+49 (0)203 301 10389 info@krohne.de The current list of all KROHNE contacts and addresses can be found at: www.krohne.com...
Need help?
Do you have a question about the H250 M40 and is the answer not in the manual?
Questions and answers