Ex db I Mb
-40°C ≤ Ta ≤ +70°C
This certificate is issued as verification that a sample(s), representative of production, was assessed and tested and found to comply with the IEC Standard list below and that the manufacturer's quality system, relating to the Ex products covered by this certificate, was assessed and found to comply with the IECEx Quality system requirements. This certificate is granted subject to the conditions as set out in IECEx Scheme Rules, IECEx 02 and Operational Documents as amended.
This Unit verification certificate is issued as verification that the Apparatus identified on page 1, was assessed and tested and found to comply with the IEC Standard list below. This certificate is granted subject to the conditions as set out in IECEx Scheme Rules, IECEx 02 and Operational Documents as amended.
The apparatus and any acceptable variations to it specified in the schedule of this certificate and the identified documents, was found to comply with the following standards:
As this is a Unit Verification Certificate, no QAR is applicable as this certificate is specific to the items listed by serial number or other unique identification.
The Optical Encoder EXME is a small flameproof construction enclosure containing the electronics. The encoder housing is manufactured from stainless steel or acid proof stainless steel with drive shaft in one enclosure end shield. The shaft can be either solid type shaft (EXME-A) or hollow type shaft (EXME-H). The drive end shield is secured to the body with six M4 counter bored socket head cap screws. The non-drive end shield is secured to the body with six M4 counter bored socket head cap screws. The body makes one cylindrical joint with the non-drive shield on one side and another cylindrical joint with the drive end shield on another side. O-rings are fitted to each cylindrical joint. There is a shaft seal on drive end shield, where two ball bearings are mounted to the cylindrical joint between the shaft and the drive end shield.
The encoder housing can be provided with one to four M20 × 1.5 – 6H, or M25 × 1.5 – 6H, or ½’’ NPT, or ¾’’ NPT threaded entries on the non drive end shield. These threaded entries are closed with the suitable separately IECEx certified cable glands. All unused entries must be closed with suitable separately IECEx certified blanking elements. The fasteners used to secure enclosure body to end shields shall have a minimum yield stress of 450 MPa. The apparatus is rated at 300 mA maximum current and voltage range from 4.5 V d.c or 10 V d.c. to 30 V d.c.. The encoder model numbers and coding is shown in the drawing 00240171. Rated speed for type variants with shaft seal maximum 3000 rpm; without shaft seal maximum 6000 rpm.
Address of the manufacturer was changed to Huginsvej 8, Hilleroed 3400 Denmark, from Tranevang 1, Alleroed 3450 Denmark.
See Annexe for more information