Xylem Lab 870 - Manual (Page 22)

Operation Lab 870
22 ba75555e04 11/2009
4.2 General operating principles
This section contains basic information on the operation of the Lab 870.
4.2.1 Operating modes
The instrument has the following operating modes:
z Measurement
The display indicates the measurement data in the measured value
display
z Calibration
The display guides you thru a calibration procedure with calibration
information
z Transmitting data
The meter transmits measuring data and calibration records to a
serial interface automatically or manually.
z Configuration
The system menu or a sensor menu with submenus, settings and
functions is displayed
4.2.2 Operation
Keys The meter is operated via keys. The keys can have different functions
with long or short keystrokes.
Functions Generally, with a short keystroke a function is carried out. A long
keystroke opens a setting menu.
In a setting menu, settings are selected with the <
▲><▼> keys.
A setting is confirmed with <OK>. With confirming, the setting is
finished and the next setting is displayed.
Representation In this operating manual, keys are indicated by brackets <..> .
The key symbol (e.g. <OK>) generally indicates a short keystroke
(under 2 sec) in this operating manual. A long keystroke (approx.
2 sec) is indicated by the underscore behind the key symbol (e.g.
<OK
_
>).