RKI Instruments Beacon 110 Rig Monitor - Manual (Page 30)

25 Beacon 110 Rig Monitor Operator’s Manual
Chapter 6: Maintenance
Overview
This chapter describes how to calibrate the Beacon 110 Rig Monitor using Calibration Mode,
replace the DC fuses, and preventive maintenance procedures for the Rig Monitor. It includes a
troubleshooting guide for problems you may encounter with the Rig Monitor.
Calibration Frequency
Although there is no particular calibration frequency that is correct for all applications, a calibration
frequency of every 3 to 6 months is adequate for most Rig Monitor applications. Unless experience
in a particular application dictates otherwise, RKI Instruments, Inc. recommends a calibration
frequency of every 3 months.
If an application is not very demanding, for example detection in a clean, temperature controlled
environment where hydrogen sulfide is not normally present, and calibration adjustments are
minimal at calibration, then a calibration frequency of every 6 months may be adequate.
If an application is very demanding, for example if hydrogen sulfide is present often and in
significant concentrations or the environment is not well controlled, then more frequent calibration
than every 3 months may be necessary.
Calibration Mode
Calibration Mode is used to calibrate the Rig Monitor’s detector head. All calibration adjustments
are made at the Rig Monitor housing after calibration gas is applied to the detector.
Calibration Gas Response Memory Feature
The Rig Monitor has the capability to “remember” the detector’s response to the calibration gas
after the gas is removed from the detector during the fresh air or span adjustment procedure. This
feature enables one person to perform calibration if the detector is mounted remotely from the Rig
Monitor. When zero air is applied to the Rig Monitor during a fresh air adjustment, the Rig Monitor
will freeze the display reading at the lowest response and the Rig Monitor will continue to display
this reading and retain it in its memory until the fresh air adjustment procedure is completed. When
calibration gas is applied to the Rig Monitor during a span adjustment, the Rig Monitor will freeze
the display reading at the highest response to the calibration gas. The calibration gas can then be
removed and the Rig Monitor will continue to display this reading and retain it in its memory until
the span adjustment procedure is completed.