2.7
Description
The Rosemount 936 comprises two main units:
•
Ultraviolet source
•
Detector
The Rosemount 936 detects gases over an open path transmitted from the source to the
detector.
2.7.1
Ultraviolet (UV) source unit
The UV source unit emits radiation pulses at the rate of one pulse per second.
The pulse width (5 to 10 µsec) is very powerful. The front of the source unit has an internal
reflector that collimates the UV beam for maximum intensity. The front window is heated
to improve performance in icing, condensation, and snow conditions.
Figure 2-1: UV Source
A. Weather shield
B. Front window section
C. Label
D. Main housing
E. Mounting plate
F. Junction box
G. Indicator light-emitting diode (LED)
H. Earth terminal
I. Cable inlet
J. Front window
Reference Manual
Technical description
00809-0100-4036
October 2021
Rosemount 936
17
Summary of Contents for Rosemount 936
Page 4: ...4 ...
Page 8: ...Product overview Reference Manual October 2021 00809 0100 4036 8 Emerson com Rosemount ...
Page 24: ...Operating modes Reference Manual October 2021 00809 0100 4036 24 Emerson com Rosemount ...
Page 30: ...Specifications Reference Manual October 2021 00809 0100 4036 30 Emerson com Rosemount ...
Page 50: ...Installation Reference Manual October 2021 00809 0100 4036 50 Emerson com Rosemount ...
Page 68: ...Wiring configurations Reference Manual October 2021 00809 0100 4036 68 Emerson com Rosemount ...
Page 72: ...Support Reference Manual October 2021 00809 0100 4036 72 Emerson com Rosemount ...
Page 74: ...Short range model Reference Manual October 2021 00809 0100 4036 74 Emerson com Rosemount ...