KROHNE GA24 Supplementary Instructions Manual
Variable-area flowmeter device category ii2g with electrical internals
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- Supplementary instructions manual (20 pages) ,
- Supplementary instructions manual (28 pages)
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Summary of Contents for KROHNE GA24
- Page 1 GA24 GA24 GA24 GA24 Supplementary instructions Supplementary instructions Supplementary instructions Supplementary instructions Variable-area flowmeter Device category II2G with electrical internals © KROHNE 04/2015 - 4000836702 - MA G24-Ex-II2G-AD R03 en...
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Page 2: Table Of Contents
CONTENTS GA24 1 Safety instructions 1.1 General notes ........................3 1.2 EC conformity ........................3 1.3 Security information ......................3 2 Device description 2.1 Device description ......................4 2.2 Safety description code ....................4 2.3 Marking..........................5 2.4 Flammable products ......................7 2.5 Equipment category ...................... -
Page 3: Safety Instructions
PTB 05 ATEX 2025 X PTB 05 ATEX 2025 X PTB 05 ATEX 2025 X If required the EC Type Test Certificate can be downloaded under www.krohne.com. 1.3 Security information Assembly, installation, start-up and maintenance may only be performed by personnel trained in... -
Page 4: Device Description
DEVICE DESCRIPTION GA24 2.1 Device description Variable area flowmeters measure the volume flow of flammable and non-flammable gases and liquids. Up to two separately adjustable electrical limit switches can be mounted to the on-site display. 2.2 Safety description code The safety description code * consists of the following elements:... -
Page 5: Marking
DEVICE DESCRIPTION GA24 2.3 Marking Type designation of the complete unit is shown on the indicator with the nameplates reproduced below. Nameplate GA24 1 Device type 2 Manufacturer 3 Manufacturer's website 4 Note manual 5 Ex data 6 Serial No. - Page 6 Marking Limit switches MS14 1 Type 2 Manufacturer 3 Year made 4 Observe Operation and Installation manual 5 Ambient temperature 6 KROHNE website 7 Electrical connection data Marking Limit switches MS14A 1 Type 2 Manufacturer 3 Observe Operation and Installation manual...
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Page 7: Flammable Products
DEVICE DESCRIPTION GA24 2.4 Flammable products Atmospheric conditions Atmospheric conditions Atmospheric conditions Atmospheric conditions An explosive atmosphere is a mixture of air and flammable gases, vapours, mists or dusts under atmospheric conditions. The following values define it T = -20°C...+60°C / -4°F...140°F and P... -
Page 8: Ambient Temperature / Temperature Classes
DEVICE DESCRIPTION GA24 2.7 Ambient temperature / temperature classes Because of the influence of the temperature of the product, no fixed temperature class is assigned to variable area flowmeters with attached electrical equipment. In fact, the temperature class of a device is a function of the temperature of both the product and the environment. -
Page 9: Installation
INSTALLATION GA24 3.1 Installation Installation and setup must be carried out according to the applicable installation installation standards (e.g. EN 60079-14) by qualified personnel trained in explosion protection. The information given in the Installation and Operation Instructions and the Supplementary Installation and Operation Instructions must always be observed. -
Page 10: Electrical Connections
ELECTRICAL CONNECTIONS GA24 4.1 General notes The electrical connection of the limit switch with protection level "ia" or "ib" is described in the manual. Permissible maximum values (electrical data) must be observed. Observe the specified polarities. The TG21 limit switch is electrically connected to the connection terminals in the connection box. -
Page 11: Operation
OPERATION GA24 5.1 Start-up Make the following checks before starting up the device: • Suitability of the materials used for the measuring unit and for the gaskets for adequate resistance to corrosion from the process product. • Correct connection of the built-on electrical components of the electical option. -
Page 12: Service
SERVICE GA24 6.1 Maintenance The measuring device requires no maintenance under normal operating conditions and when used as prescribed. The following visual checks should be carried out at regular intervals in conjunction with the system inspections required in hazardous areas to keep equipment in good operating condition: •... -
Page 13: Notes
NOTES GA24 04/2015 - 4000836702 - MA G24-Ex-II2G-AD R03 en www.krohne.com... - Page 14 NOTES GA24 www.krohne.com 04/2015 - 4000836702 - MA G24-Ex-II2G-AD R03 en...
- Page 15 NOTES GA24 04/2015 - 4000836702 - MA G24-Ex-II2G-AD R03 en www.krohne.com...
- Page 16 Measuring systems for the marine industry Head Office KROHNE Messtechnik GmbH Ludwig-Krohne-Str. 5 47058 Duisburg (Germany) Tel.:+49 203 301 0 Fax:+49 203 301 103 89 info@krohne.com The current list of all KROHNE contacts and addresses can be found at: www.krohne.com...
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