MSA Senscient ELDS 1000 series, Руководство по эксплуатации

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Appendix E – HART Communications
166
Senscient ELDS™
Rev 15
GB
Command ELDS Data Description
20 Read Long Tag ELDS TAG This contains the ASCII
representation of the ELDS unit
TAG. This should not be
confused with the short tag
supported by command 13
above.
22 Write Long Tag ELDS TAG This allows the ELDS unit TAG
to be updated.
48 Read Additional
Device Status
ELDS Status Information This provides information
relating to the following items:
Beamblock L0 and L1
Lowlight
Over Temperature
UnderTemperature
BlueTooth (set if configured)
WindowHeater State (on/off)
Valid zero and Span Data
Rapid Signal Loss suppression
Fingerprint Failure
Laser Lock Status
Negative Gas faults
Diffuser Status
Rx not receiving FSK packets
These items are contained in
the additional ‘bytes’ of data
available via command 48 and
are detailed below in
section 14.3.2.
14.3.2 SimuGas Information over HART
In order to enable the results of the last SimuGas test performed by an ELDS system to be made
available using Universal HART commands, the response to HART command 13 – Read Tag,
Descriptor, Date will contain the following information:
Message Description
NO SG EVENT There has been no SimuGas event since the Rx was last powered. The
date will be 01/01/2000 (default entry)
SG FAIL: nnnn.n The last SimuGas event was a failure. nnnn.n is the recorded SimuGas
value. The Date field indicates the date that the test was performed.
SG PASS: nnnn.n The last SimuGas event was successful. nnnn.n is the recorded SimuGas
value. The Date field indicates the date that the test was performed
SG HIBG: nnnn.n The last SimuGas event detected a high gas background during the test.
nnnn.n is the level of the background (always in ppm.m units). The test is
treated as a pass by the ELDS unit. The Date field indicates the date that
the test was performed.