Analytical-industries GPR-1800 IS ATEX Trace PPM Oxygen Transmitter Manuel d'utilisateur télécharger pdf (Page 11)

Advanced Instruments, Inc

5. Operation

Principle of Operation

The GPR-1800 IS Oxygen Transmitter incorporates advanced galvanic fuel cell type oxygen sensors. These

sensors are very specific to oxygen and generate an electrical signal proportional to the amount of oxygen

present in a gas stream. The selection of a particular type of sensor depends on the composition of the

sample gas stream. Consult the factory for recommendation.

The transmitter is configured in two sections. The signal processing electronics and sensor are housed in a

general purpose NEMA 4X rated enclosure. The terminals for incoming power, signal output and intrinsic

safety barriers are mounted on a PCB housed in an explosion proof enclosure.

The two sets of electronics are interconnected using an explosion proof Y-fitting, explosion proof packing

fiber and sealing cement – see Appendix A. Once connected, the intrinsic safety barriers limit the amount of

power that flows to and from the signal processing electronics effectively preventing an explosive condition.

The analyzer design conforms to the ATEX directive for equipment as intrinsically safe and has been

approved by an independent body:

The analyzer carries the following area classification

II 2 G

Ex d [ib] ib IIB T4

amb

-20⁰C to +50⁰C

The GPR-1800 IS also meets the intrinsic safety standards required for use in Class 1, Division 1, Group C,

D hazardous areas.

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 50 51

Pas de commentaire

Analytical-industries GPR-1800 IS ATEX Trace PPM Oxygen Transmitter Manuel d'utilisateur Page 11