Hach 3654 Portable H2/N2 Analyzer manual Measurement Phase on

18 of 66 Operating Instructions - 3654 Portable H2/N2 Analyzer

Stores a measurement value into memory

Backlights the LCD for approximately three minutes

Toggles between gas concentration and temperature measurement displays in measurement mode, increases or decreases the storage number during storage or memory view, or sets a calibration value during calibration

You can access other instrument functions by pushing one of the following keys while also pressing the power button:

Selects dissolved or gaseous measurement phase - see “Gas

Measurement Phase” on page 29

Start automatic data acquisition - see “Automatic Data Acquisition” on page 20

Start memory storage view - see “Viewing Stored Measurements” on page 22

Starts continuous purge mode - see “Continuous Purge” on page 53

Display program identification information

Once you have completed the installation and start-up procedures defined in “Installation” on page 9, the analyzer can be operated independently, making measurements as a portable hydrogen or nitrogen gas analyzer.

You may store these measurement values for later analysis via the WIN3654 program (on your personal computer) or the memory view mode (on the instrument). The WIN3654 program operation is described in detail throughout the manual, where relevant.

ORBISPHERE Operator Manual