Introduction; Figure 1-1: Model 923 Electronic Data Logger Card - Focal 923 User Manual

1.0 Introduction

The Model 923 electronic data logger (923-EDL) is a compact and rugged data logging card used for product
health monitoring in marine, industrial, and other harsh environments.
systems such as electrical slip rings (ESRs) and FPSOs, it provides real-time access to diagnostic information
as well as data storage for offloading at a later time. Typically mounted at the end of a ring stack, the 923-EDL
collects data from an array of on-board sensors and stores it in nonvolatile flash memory.
The 923-EDL on-board sensors are capable of measuring temperature, relative humidity, ambient light, shock,
vibration and rotation. Logging the total number of slip ring rotations allows tracking of slip ring usage for better
planning of maintenance intervals. The environmental data collected can be used to establish baseline
operational parameters and trend monitoring can be used in a health and usage monitoring system (HUMS) to
identify potential problems before they become major faults.
provides expansion connectors that can be used to interface with up to two (2) thermocouples and up to two (2)
single-ended analog channels.
Users can access on-board diagnostic information in real time via an RS-485 serial link using the sample Focal
graphical user interface (GUI) software (based on the Microsoft
configured as a Modbus RTU master device (e.g. ModScan32). A top view of the Model 923-EDL card is shown
below.
This user's manual and the appropriate reference documents should be reviewed prior to
installation or reconfiguration of the data logger system. Refer to system installation drawings and
Model 923 configuration drawings for specific installation details.
Focal Technologies Corporation
A Moog Inc. Company

Figure 1-1: Model 923 Electronic Data Logger Card

Model 923 Data Logger – User Manual
When installed as an
In addition to the on-board sensors, the 923-EDL
®
.NET Framework), or by using custom
Document No: 923-0603-01, Rev. 2
TM
option in Focal
TM
software
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