GREISINGER GMH 5430, Руководство по эксплуатации

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H83.0.02.6C-10 Operating manual GMH 5430 page 10 of 18
_____________________________________________________ _____________________________________________________________________________
GHM GROUP
– Greisinger | GHM Messtechnik GmbH
Hans-Sachs-Str. 26 | 93128 Regenstauf | GERMANY
Phone +49 9402 9383-0 | Fax +49 9402 9383-33
www.greisinger.de | info@greisinger.d e
LF
Tref
=
LF
Tx
1 +
TK
lin
100% • (Tx − Tref)
Temperature coefficient of about 2.0 %/K are most common.
A temperature coefficient can be determined for example by measuring a solution with deactivated
temperature compensation at two different temperatures (T1 and T2).
TK
lin
=
(LF
T1
− LF
T2
) • 100%
(T1 − T2) • LF
T1
TK
lin
is the value input at the menu “t.Lin”.
LF
T1
conductivity at temperature T1
LF
T2
conductivity at temperature T2
7 Configuration
Some menu points depend on current device settings.
To change d
evice’s settings, press
“menu”
for 2 seconds. This will activate the configuration menu
(main display: “SEt”). Pressing
“menu”
changes between the menus points, pressing jumps to the
referring parameters, which can be selected with key . The parameter value can be changed with or
. Pressing
“menu”
again jumps back to the main configuration menu and saves the settings.
Pressing
“enter”
finishes the configuration.
Pressing “menu” and “store” at the same time for more than 2 seconds will reset the device to
factory defaults.
If no key is pressed for more than 2 minutes the configuration will be aborted. All changes will be
discarded!
Menu Parameter Value Description
or
Set Configuration: General configuration
I nput: Selection of measured unit **
SEt Choice of displayed unit via set-key
Cond Conductivity
rES Resistivity
SAL Salinity
tdS Total dissolved solids
TDS measurement: conversion factor (only if Inp = tdS)
0.40 - 1.00 Conversion factor for TDS measurement
Cell Range: Adjustment of cell constant: cell constant range
0.01 Ultrapure water, electrodes with K ~ 0.01
0.1 Ultrapure water, electrodes with K ~ 0.1
1 Standard electrodes, i.e. with K= 0.55 or K=1
10 Electrodes with K=10
Cell Factor: Adjustment of cell constant: multiplication factor
0.4000 -
1.5000 Multiplication factor of cell constant
Cell constant CELL = CELL Range * CELL Factor
t-Input: Selection of temperature input type
ntc NTC 10k sensor
Pt Pt1000 sensor
Range: Selection of display range (conductivity, resistivity or tdS)
Auto Automatic range selection
e.g. 0.0 - 500.0 µS/cm Example for CELL rAng 1 and InP Cond: others in chapter 6.2
…0- 1000 mS/cm
Example for CELL rAng 1 and InP Cond: others in chapter 6.2