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3.4
System setup
3.4.1
Program detection functions
The Rosemount 935 incorporates several functions that can be set by the customer using:
•
WinHost software
•
HART
®
Field Communicator: The detector is equipped with an intrinsically safe
connector to enable HART communication.
3.4.2
Setting up detection function
Related information
Gas calibration
You can select three gas types for maximum compatibility to gas(es) you are trying to
detect.
Gas types:
•
Methane: full scale 5 LEL.m
•
Propane: full scale 5 LEL.m
•
Ethylene: full scale 8 LEL.m
These three calibrations are standard calibrations.
The Rosemount 935 is able to detect other gases, based on cross-sensitivity. Please
consult Emerson for information on how to detect other gases.
Setting up addresses
The detector provides up to 247 address that can be used in the RS-485 communication
link and up to 64 addresses that can be used in the HART
®
Field Communication link.
Setting up heated optics
Select one of the following mode's for the detector's heated optics:
Off
Not operated
On
Operated continuously
Auto
On per temperature change (default)
When operated in Automatic mode, you can define the start temperature below which the
window will be heated between 32 °F (0 °C) and 122 °F (50 °C) The detector stops heating
the window when the temperature is 27 °F (15 °C) above the defined temperature.
This feature relates to the detector
only
.
Select one of the following two options for the source heated optics:
Operating modes
Reference Manual
May 2022
00809-0100-4035
20
Emerson.com/Rosemount
Содержание Rosemount 935
Страница 1: ...Reference Manual 00809 0100 4035 Rev AH May 2022 Rosemount 935 Open Path Combustible Gas Detector ...
Страница 8: ...Product overview Reference Manual May 2022 00809 0100 4035 8 Emerson com Rosemount ...
Страница 16: ...Technical description Reference Manual May 2022 00809 0100 4035 16 Emerson com Rosemount ...
Страница 22: ...Operating modes Reference Manual May 2022 00809 0100 4035 22 Emerson com Rosemount ...
Страница 46: ...Operation Reference Manual May 2022 00809 0100 4035 46 Emerson com Rosemount ...
Страница 48: ...10 Do a functional check Maintenance Reference Manual May 2022 00809 0100 4035 48 Emerson com Rosemount ...
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Страница 56: ...Ordering information Reference Manual May 2022 00809 0100 4035 56 Emerson com Rosemount ...
Страница 62: ...Specifications Reference Manual May 2022 00809 0100 4035 62 Emerson com Rosemount ...
Страница 70: ...Wiring configurations Reference Manual May 2022 00809 0100 4035 70 Emerson com Rosemount ...
Страница 74: ...Support Reference Manual May 2022 00809 0100 4035 74 Emerson com Rosemount ...