RKI Instruments Beacon 200 - Manual (Page 44)

44 • Overview
Chapter 7: Maintenance
Overview
This chapter describes use of the Calibration Program and corrective
maintenance procedures for the Beacon 200. It includes a troubleshooting
guide for problems you may encounter with the Beacon 200. Procedures to
replace components of the Beacon 200 are at the end of this chapter.
Calibration Program
The Calibration Program is used to calibrate the Beacon 200’s active
channel(s). Since the Beacon 200 can support both direct connect (internal
amp) and 4-20 mA transmitter (remote amp) detector heads, when
calibrating the active channel(s) there are three possible detector head
combinations:
• Direct connect detector head(s) only.
If one or two direct connect detector heads are active, then all
calibration adjustments are made at the Beacon 200 after calibration
gas is applied at the detector(s).
• 4-20 mA transmitter detector head(s) only.
If one or two 4-20 mA transmitter detector heads are active, then all
calibration adjustments are made at the detector head(s) after
calibration gas is applied to the detector(s).
• A direct connect and a 4-20 mA transmitter detector head.
If one direct connect and one 4-20 mA transmitter detector head are
installed, then calibration adjustments must be made at the Beacon 200
for the direct connect detector head after applying gas to its detector,
and at the detector head for the 4-20 mA transmitter detector head.
Calibration Program Flow
Figures 11, 12, and 13 below illustrate the general flow of the Calibration
Program for the three possible detector head combinations. See the next
section, Entering the Calibration Program, for instructions to enter the
Calibration Program. In general, the program screens provide instructions
to guide you through the program. At any point in the calibration program,
the ESCAPE key may be used to either return to the previous screen or