OHAUS ST300, Service Manual, Page: 13 / 29

CHAPTER 1 GETTING STARTED
Starter Series Portable Meter Service Manual 1-9 Ohaus Corporation www.ohaus.com
1.9 METER OPERATION
– ST300D
This section contains information on the basic operation of the Starter 3100C meter.
1.9.1 OVERVIEW OF THE CONTROLS
Displays
Figure 1-3. ST300D display
1
Electrode condition
Slope: 80-125% Electrode
condition is very good
Slope: 60-80% Electrode
condition is not so good, needs
attention or cleaning
2 Displays when manual endpoint, need to press button-Read to lock
the reading, means auto endpoint mode, meter judges the endpoint
(reading is stable) and locks the reading automatically.
3
Measurement icon - ; measurement or calibration is running
4
Calibration icon - Cal ; calibration in progress
5
Setup icon - instrument is in the setup mode
6 Power always on icon - Meter will not automatically turn off after 10
minutes no operation.
7 Battery status icon - fully charged, half-charged or fully discharged
8 ppm, mg/L or % for DO reading or calibration; mbar, hPa or mmHg for
pressure entry; ppt for salinity entry
9
Calibration point Cal / Buffer group /Memory number MR / Error index Err
10
Auto temperature compensation - ATC ; Manual temperature compensation -
MTC
11 Temperature during measurement or reference temperature in setup mode