H72.0.11.6C-04
Operating Manual GMH 3451
page 5 of 18
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4 Handling
4.1 Display elements
1
Main display
: conductivity
(mS/cm,
µS/cm)
resistivity (k
Ω
cm)
TDS / total dissolved solids (mg/l)
salinity (SAL)
2
Secondary display
: measuring value temperature
3 Arrows to selected
measuring unit
4
Warning signal:
indicates low battery or missing
calibration
5
Display elements to show minimum / maximum /
memorized measuring value
6
nLF, Lin
:
display element for selected
temperature compensation
7
%/K, 1/cm:
additional configuration units
8
logg-arrow
:
logger is ready
arrow flashing: automatic recording (Logg CYCL) is
active
4.2 Pushbuttons
On / Off key
press shortly: switch on/off instrument
Set / Menu
:
press shortly: change-over between measuring units
(only if „InP: SEt“ is selected)
press for 2 sec. (menu): invoke configuration menu
+
min/max when taking measurements:
press shortly: min. or max. value is displayed
press for 2 sec: the corresponding value is deleted
Configuration
:
to enter values or change settings
CAL
: only at mode ‘cond’=conductivity:
press for 2 sec: start cell correction adjustment
Store/Quit
:
Logger off:
hold and save current measuring value
(‘HLD’ is displayed)
Logger on:
Operation of data logger
– chapter 8
Set/Menu:
confirm settings, return to measuring
4.3 Connections
Universal output:
interface, analog output (see
chapter 9 “Universal output“)
Permanently connected measuring cell with
integrated temperature probe
Power supply:
The mains socket (1,9 mm inner diameter) is located at the left side of the
instrument for 10,5-12 V DC supply
All contacts have to be protected against dirt and moisture!
MAX DIF
MIN HLD
%
°C
°F
S
Logg
%/K
AL
mS
nLF
SAL
mg/l
1/cm
Lin
kOhm
1
2
3
4
5
6
ON
OFF
max
Store
CAL
min
Set
Menu
Quit
