IA CERTIFICATE (Revision 3 Revised for Annual review)

Transcription

1 Certificate Number: MASC M/11-376X Issue: 22 September 2014 Expire: 22 September 2015 Page: 1 f 5 IA CERTIFICATE (Revisin 3 Revised fr Annual review) IN TERMS OF REGULATION OF THE MINERALS ACT (INCORPORATION THE MINE HEALTH AND SAFETY ACT) AND REGULATION 9 (1) OF THE ELECTRICAL MACHINERY REGULATIONS OF THE OCCUPATIONAL HEALTH AND SAFETY ACT Ex Type Examinatin Certificate number: Equipment: Serial N: Applicant: Address: Manufacturer: Address: MASC M/11-376X (see Cnditins f Certificatin ) Trlex Limited. Hazel Grve Stckprt Cheshire SK7 5DY United Kingdm Trlex Limited. Hazel Grve Stckprt Cheshire SK7 5DY United Kingdm DESCRIPTION: The takes a signal frm a cmpnent-certified gas sensing head that is munted n the sensr bard in the sensr enclsure, this signal is cnditined and an analgue signal is then transmitted t ther mnitring equipment. The sensing head can detect bth flammable and txic gases. The signal requires cmpensatin fr pressure and temperature changes s a pressure sensr is fitted n the pressure sensr PCB and a temperaturemeasuring integrated is lcated n the sensr head PCB. The equipment cmprises an utput bard cnnected t an ptinal display bard plus a cntrl bard, which is cnnected t tw sensr cnditining bards (pressure sensr and infra red sensr). The assembly is hused in a anti-static plycarbnate husing with a plycarbnate windw. The sensr may be munted n the main unit, r in a remte lcatin cnnected by up t 10m f cable. There are three versins f the equipment: 1. Grup I, 5 t 15 Hz 2. Grup I, 0.4 t 2 V 3. Grup I, 4 t 20 ma

2 (Revisin 3) Page 2 f 5 The TX6363 has the fllwing safety descriptin at terminals 1 t 5: (signal) (Nte 1) 4-20mA 0.4-2V 5-15Hz (signal) (signal) (Nte 2) (Nte 1) Ii 666mA mA Pi W W - - Ui 16.5V 16.5V 16.5V 16.5V 16.5V 16.5V 16.5V 16.5V 16.5V Ci 1.2nF 1.2nF 1.2nF 1.2nF 1.2nF 1.2nF Li Nte 1: Nte 2: 4-20mA Grup I build nly: the pwer and signal terminals have been assessed as a single intrinsically safe. Hwever, if it is required t assess these as separate intrinsically safe s, then the signal shuld be cnsidered t have a resistance f 73Ω in series with its terminals V Grup I build nly: the pwer and signal terminals have been assessed as a single intrinsically safe. Hwever, if it is required t assess these as separate intrinsically safe s, then the signal shuld be cnsidered as a supply f 7.14V with a resistance f 218Ω in series with its terminals. Variatin 1 - This variatin intrduced the fllwing changes: 1. The use f Faradex stainless steel filled nyln 6 as an alternative anti-static enclsure material was permitted. Variatin 2 - This variatin intrduced the fllwing changes: 1. The additin f tw Pull Up resistrs (RM1 and RM2) t the Cntrl PCB was endrsed. Variatin 3 - This variatin intrduced the fllwing changes: 1. The intrductin f the TX6363 Mk2 Infra Red Gas Sensr / Transmitter that incrprates the fllwing mdificatins: The Output Bard has been redesigned and replaced the previus versin. A new LCD Display has been intrduced t replace the previus versin. The use f an alternative pressure sensr n the head PCB. AN alternative husing material with anti-static prperties. The use f Bedfrd pt-islatr Type OPI1264D apprved under BAS 01ATEX1278U cded Ex ia IIC as an alternative t that apprved under BAS Ex 89C2096U/2 cded EEx ia IIC.

3 (Revisin 3) Page 3 f 5 The use f Littlefuse fuse 259 apprved under Baseefa02ATEX0071U cded EEx ia as an alternative t that apprved under BAS Ex The new versin cnfrms t the requirements f the specific EN series f standards detailed in sectin 9 and bears the marking shwn belw: I M1 Ex ia I Ma (Ta = -20 C t +60 C) The fllwing safety descriptin is applicable t this versin: Input parameters Grup I 4-20mA Grup I 0.4-2V Grup I 5-15Hz Ui 16.5V 16.5V 16.5V 16.5V 16.5V 16.5V 16.5V 16.5V 16.5V Pi W - - Ci 0 1.1nF 1.1nF 0 1.1nF 1.1nF 0 1.1nF 1.1nF Li Output parameters Grup I 4-20mA Grup I 0.4-2V Grup I 5-15Hz U 16.5V 7.14V 7.14V 16.5V 7.14V 7.14V V 7.14V I 540mA 15mA 15mA 29mA 15mA 15mA - 15mA 15mA P 1.765W 24mW 24mW 120mW 24mW 24mW - 24mW 24mW C 11.7µF µF L 1.5mH mH MARKING Trlex Limited. Ex Rating: Ex ia I (Ta = -20 C t +60 C) IA N: MASC M/11-376X TX6363 Mk2 Infra Red Gas Sensr Ex Rating: Ex ia I Ma (Ta = -20 C t +60 C) Serial N: (See Cnditins f Certificatin ) /. Cmpliance...

4 (Revisin 3) Page 4 f 5 COMPLIANCE: The unit as described abve and in MASC letter is hereby certified Explsin Prtected Ex ia I Ma (Ta = -20 C t +60 C) and is suitable fr use in hazardus lcatins as stated belw and as tested, assessed and inspected in accrdance with the relevant requirements f SANS Standards: The evaluatin was cnducted accrding t the requirements f: SANS/(IEC) : 2000 (Editin 2.01) General Requirements ; SANS/(IEC) : 2009 (Used fr guidance in respect f marking); SANS/(IEC) : 1999 (Editin 2) Intrinsic Safety i ; ARP 0108 (Editin 1.1) Regulatry requirements fr explsin prtected apparatus. Lcatin Zne 0 & 1 Gas / cal dust: Undergrund. Hazard Frequency --- Cntinuus as culd ccur under nrmal perating cnditins in hazardus area Envirnment Grup I Methane and cal dust Limiting Temperature 450 C (methane gas) / 150 C (cal dust) Ambient Temperature -20 C t +60 C The use f apparatus in hazardus lcatins is subject t the fllwing prvisins as applicable, which shall be adhered t: i) SANS requirements; ii) Any cnditins mentined in the abve reprt; iii) Cdes f Practice enfrced in terms f Regulatins f Minerals Act, by Chief Inspectr f Mines; iv) Any restrictins and cnditins enfrced by Chief Inspectrs f Mines, Principal Inspectr (Grup I equipment) f Chief Inspectr f Factries (Grup II equipment); v) Any relevant requirements f the MHS Act r the OHS Act. SPECIAL CONDITIONS OF SAFE USE (X) 1. The user shuld nte that internal cmpnents may exceed 150 C under fault cnditins and care shuld be taken t prevent the ingress f cal dust when pening the enclsure. /. Cnditins...

5 (Revisin 3) Page 5 f 5 CONDITIONS OF CERTIFICATION: 1. This Certificate remains valid based n an annual review indicated in an fficial MASC letter. 2. The apparatus must be additinally marked in a clear, legible, visible and indelible manner with the MASC marking details abve. 3. This certificate f apprval nly cvers the equipment as certified abve and des nt include any scheduled additins r variatins/amendments/new issues t the certificate(s), made after the abve date. 4. The equipment des nt need t be re-tested when used n the cnditins and with such restrictins as prescribed by SIRA and in this apprval. 5. The SIRA certificatin must remain valid. 6. The bearing f the requirements in the ARP 0108 (r regulatins) and SANS n the certificatin f the equipment must remain unchanged. 7. All prductin units must be cvered by a QAN, Mark Scheme r Batch Evaluatin. Apprved n behalf f MASC F du Tit TECHNICAL SPECIALIST Mining And Surface Certificatin This dcument is issued based n Mining And Surface Certificatin s Standard Cntract terms and cnditins available n request. While every endeavur is made t ensure that a test / assessment is representative and accurately perfrmed, and that a reprt is accurate in the quted results and cnclusins drawn frm the test / assessment, MASC r its members/emplyees shall in n way be liable fr any errr made in carrying ut the test / assessment r fr any errneus statement, whether in fact r in pinin, cntained in a reprt issued pursuant t a test / assessment. MASC takes n respnsibility fr any nn-cnfrmances, exclusins r any results / assessments nt in cmpliance with the standards. By marking the equipment in accrdance with the dcumentatin / standard, the manufacturer attests n his wn respnsibility that the equipment has been cnstructed in accrdance with the applicable requirements f the relevant standards and that the rutine verificatins and rutine tests have been successfully cmpleted and the prduct cmplies with the dcumentatin and standard(s). This dcument is nly fr use and applicatin in Suth Africa. It is issued based n Natinal interpretatins and accepted practises.