4
The
HI 98188
instrument is state-of-the-art, heavy-duty conductivity meter,
designed to provide laboratory results and accuracy under harsh industrial
conditions.
The USP standard compliance makes the instrument useful for pure water
determination.
It is provided with a series of new diagnostic features which add an entirely new
dimension to the measurement of conductivity, by allowing the user to dramati-
cally improve the reliability of the measurement:
• 7 memorized standards (0.00
m
S/cm, 84.0
m
S/cm, 1.413 mS/cm,
5.00 mS/cm, 12.88 mS/cm, 80.0 mS/cm and 111.8 mS/cm) for calibra-
tion.
• EC calibration up to five calibration points.
• Messages on the graphic LCD for an easy and accurate calibration.
• Diagnostic features to alert the user when the electrode needs cleaning.
• User selectable
“Outside Calibration Range”
warning
.
• User-selectable “calibration time out” to remind when a new calibration is
necessary.
Moreover, they offer an extended temperature range from –20 to 120 ºC
(–4 to 248 ºF), using temperature sensor inside EC electrode.
This instrument can also measure in Resistivity, TDS and Salinity ranges.
Three salinity modes are available:
% NaCl, Practical salinity
and
N
atural
sea water scale
.
Other features include:
• Temperature source selection
• Temperature automatic compensation, linear or non linear user selectable
• Temperature reference selection 15 °C, 20 °C or 25 °C.
• Temperature coefficient set
• Log on demand up to 400 samples
• Auto Log feature up to 1000 records
• Auto Hold feature, to freeze first stable reading on the LCD
• Lock and user setup Fixed range selection
• GLP feature, to view last calibration data for EC, NaCl
• Probe change recognition
• PC interface
• Probe replatinization
GENERAL DESCRIPTION
GENERAL DESCRIPTION
GENERAL DESCRIPTION
GENERAL DESCRIPTION
GENERAL DESCRIPTION
