Det-Tronics OPECL Infrared Hydrocarbon Gas Detector - Manual (Page 31)

95-8556 10.1
Appendix A
FM ApprovAl Description
The following items, functions and options describe the FM approval.
ApprovAl
Open Path Eclipse Infrared Hydrocarbon Gas Detector, Model OPECL Series.
Class I, Div. 1, Groups B, C & D (T5) with intrinsically safe output for HART communication in accordance with
control drawing 007722-001 (see Appendix G).
Class I, Div. 2, Groups A, B, C & D (T4).
NEMA/Type 4X.
Conduit seal not required.
Performance verified in accordance with FM 6325, ANSI/ISA 12.13.04.
AccurAcy
±5% of full scale gas concentration or ±10% of applied gas concentration, whichever is greater.
note
In order to remain within ±5% of full scale gas concentration or ±10% of applied gas concentration, the
maximum misalignment is ±0.05 degrees.
response tiMe
T90: <5 seconds (5.0 LFL-meters applied).
Note: Add 2 seconds to response time for EQP compatible models.
noteS
Approval of the Model oPeCL does not include or imply approval of the apparatus to which the detector may
be connected and which processes the electronic signal for eventual end use. In order to maintain an approved
system, the apparatus to which the detector is connected must also be approved.
this Approval does not include or imply Approval of the communications protocol or functions provided by the
software of this instrument or the communications apparatus or software connected to this instrument.
A-1