CGT-02 KDB 04ATEX036 English translation CERTIFICATE [1] EC TYPE EXAMINATION CERTIFICATE [2] Devices, protection systems, parts and sub-assemblies for explosion hazardous areas. Directive 94/9/EC (introduced into polish law by the Order of the Ministry of Economy of 28.07.2003 Official Journal of the Republic of Poland No. 143, pos. 1393). [3] EC Type examination certificate KDB 04ATEX036 [4] Device: CGT-02 turbine gasmeter [5] Manufacturer: Common S.A. [6] Address: ul. Aleksandrowska 67/93, 91-205 Łódź [7] The device or protective system subject to this certificate, with its all approved versions, is described in the attachment to this certificate and in the documentation mentioned there. [8] Notified Body No. 1453, according to Article 9 of the Directive 94/9/WE of 23.03.1994, certifies that this device or protection system meets the essential health and safety requirements relating to the design and construction of devices and protection systems intended for use in explosion hazardous areas specified in the Attachment 2 to the Directive 94/9/EC (Order of the Ministry of Economy of 28.07.2003 chapter 2, Official Journal of the Republic of Poland No. 143, pos. 1393). The test and examination results are recorded in the report KDB No. 04.151. [9] Compliance with the essential health and safety requirements has been assured by accordance with the following standards: PN-EN 13463-1:2003, PN-EN 50014:2002(U), PN-EN 50020:2003(U) [10] X sign given after certificate number states for special conditions of use in explosion hazardous areas, specified in the attachment to this certificate. [11] This EC type examination certificate applies only to the design, evaluation and testing of the device or protection system, according to the Directive 94/9/EC. This certificate does not cover other requirements of the Directive, related to the manufacturing process and introducing into the market. [12] The device or protective system should be marked: II 2G EExiaIIBT4 II 2G EExiaIICT4 Date of issue 29.06.2004 page 1 of 5 (stamps & signatures)
[14] EC Type examination certificate KDB KDB 04ATEX036 [15] Description: Turbine gasmeters are electro-mechanical pressure devices designed for gas volume measurement. They are usually installed in places like rooms, buildings, boxes and enclosures, where explosive mixtures of fumes, gas or mist mixed with air described by explosion classes IIA, IIB & IIC may occur. The principle of operation of turbine gasmeter: impeller rotation speed is proportional to linear speed of gas flow, which means it is proportional to gas volume flux. Incoming gas is guided into measuring cartridge and causes the impeller to rotate. Gear unit and magnetic coupling transfer rotary motion of the rotors to the counterhead. Volume of gas flowing through the meter is summed up and displayed on the 8 digits totalizer. Gasmeter is equipped with electric pulse sensors, powered by intrinsically safe circuits. CGT-02 turbine gasmeters consist of 5 integrated units: main body unit, measuring cartridge, rotation transfer unit, counterhead and lubrication system. Every unit has a metal body, all bodies are connected to each other and the connections resistance is lower that 1MΩ. Main body unit consists of outer body and flow conditioner. Flow conditioner is made of metal or plastic with surface resistance lower than 1 GΩ. There are several connection sockets in outer body, designed for: pressure measurement, temperature measurement, and sensors outputs. There can be maximum 4 HF (high frequency) inductive sensors installed in the gasmeter: - 2 HF sensors taking pulses from impeller - 2 HF sensors taking pulses from reference wheel. Above mentioned pulse sensors should be of at least protection level. Example: - HF sensor type CHFI-02 by Common S.A. ; II 2G EEx ia IIC T6 II 2G EEx ia IIC T5 - HF sensor type NJ1,5-10GM-N-Y07451 by Pepperl+Fuchs GmbH II1GEEx ia IICT6 - HF sensor type Bi1-EH04-Y1 by Hans Turck GmbH ; II 2G EEx ia IIC T6 Allowable supply parameters (of above mentioned sensors) from intrinsically safe circuits, and maximum inductance & maximum self-capacitance of sensors: - CHFI-02 Ui=15,5V, Ii=52mA, Pi=169mW, Li 40µH, Ci=28nF - NJ1,5-10GM-N-Y07451 Ui=16V, Ii=25mA, Pi=64mW, Li=50µH, Ci=20nF - Bi1-EH04-Y1 Ui=15V, Ii=60mA, Pi=80mW, Li=150µH, Ci=150nF Above data is given on the casing of each sensor. (stamp & signature) page 2 of 5
[14] EC Type examination certificate KDB KDB 04ATEX036 [15] Description (continued): The measuring cartridge consists of measuring cartridge body, impeller and gear unit. It is mounted in the main gasmeter body. The impeller is positioned in the centre line of gasmeter body, supported by precise ball bearings. Both: measuring cartridge body and impeller are made of aluminium. Gear unit reduces the rotating speed and transfers it to magnetic coupling. Rotation transfer unit connects measuring cartridge unit with counterhead unit, and separates gas zone from environment. Rotation transfer unit consists of base, hermetic (gas tight) barrier and magnetic coupling. Driving part of magnetic coupling is in gas zone and is connected to the impeller by jointed shaft. Driven part of coupling is separated from gas zone by hermetic barrier and is connected to counterhead unit. Counterhead unit consists of lower body, upper body, gears, 8 digit totalizer, and LF and HF sensors with wiring and plugs. Connection between lower and upper bodies assures IP65 protection class. Upper body is fixed to lower body with bolts, and sealed with seals. There can be maximum 6 pulse sensors installed in the counterhead: - two HF high frequency inductive sensors - two LFI low frequency inductive sensors - two LFK low frequency reed contact sensors. Above mentioned pulse sensors should be of at least protection level. Example: II 2G EEx ib IIC T4 - HF sensor type NJ0,8-5GM-N by Pepperl+Fuchs GmbH ; II 1G EEx ia IIC T6 - LFI sensor type CLFI-01 by Common S.A. ; II 2G EEx ia IIC T6 - LFK sensor type CLFK-01 by Common S.A. ; II 2G EEx ia IIC T6 Nameplates are mounted on the upper body of counterhead. Nameplates for use in explosive atmosphere class IIA or IIB, are made of polycarbonate foil glued to metal plate of less than 100 cm 2 area. Nameplates for use in explosive atmosphere class IIC, are made of stainless steel and inscriptions are made by electrochemical etching. Lubrication system consists of hand-driven oil pump and oil container, it is meant for impeller bearings lubrication. Other CGT-02 mechanisms (and DN50 impeller bearings) are not lubricated using oil pump they are equipped with self-lubricating bearings. Oil container is made of transparent plastic and it has outer body made of metal against electrostatic charge accumulation. (stamp & signature) page 3 of 5
[14] EC Type examination certificate KDB 04ATEX036 [15] Description (continued): Technical parameters: Ambient temperature: -25 C +70 C Body protection level: IP65 Intrinsic safety parameters: HF U i = 16 V DC I i = 25 ma P i = 64 mw L i = 50 µh C i = 30 nf pulse sensor type LFI U i = 15,5 V DC I i = 52 ma P i = 169 mw L i 40 µh C i = 28 nf LFK U i = 15,5 V DC I i = 52 ma P i = 169 mw L i 0 C i 0 (stamp) page 4 of 5
[14] EC Type examination certificate KDB 04ATEX036 [16] Test report: Test report KDB No 04.153 [17] Special conditions of use: none [18] Essential health and safety requirements: Assured by the compliance with the standards mentioned in point 9 of this certificate. [19] Documentation specification: Documentation specification CGT-02 turbine gasmeters description Gasmeter structure CGT-02 gasmeters technical data CGT-02 gasmeters dimensions Bill of materials Sensors position in gasmeter body HF sensor taking pulses from impeller type I HF sensor taking pulses from impeller type II HF sensor taking pulses from reference wheel Counterhead unit structure Sensors position in counterhead unit Different sensors-to-plugs connection versions Name plates Technical data of parts & units Manual CGT/A04-00 CGT/A04-01 CGT/A04-02 CGT/A04-03 CGT/A04-04 CGT/A04-05 CGT/A04-06 CHF/A04-01 CHF/A04-02 CHF/A04-03 CZL/A04-01 CZL/A04-02 CZL/A04-03 CGT/A04-07 CGT/ELH04 CGT/IU04 (stamp) Page 5 of 5