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1) Liquid Crystal Display (LCD)
2) Function keys
3) CHANNEL keys to toggle between channels (Ch1 - pH, Ch2 - EC)
4) / keys to manually increase/decrease the parameters or to
scroll between the parameter list
5) MENU key, to change the function key at the bottom of the
display
6) RANGE key, to switch between pH, mV and ISE range (Ch1);
EC, Resitivity, TDS and Salinity range (Ch2)
7) HELP key to enter/exit contextual help
8) CAL key, to enter calibration mode
9) ESC to escape the current mode, exit calibration, setup, help,
etc.
Front view
• Extended temperature range on pH channel from –20 to 120 ºC
(–4 to 248 ºF), using HI 7662-T interchangeable temperature
probes.
EC channel:
• 7 memorized standards (0.00 µS/cm, 84.0 µS/cm, 1.413 mS/cm,
5.00 mS/cm, 12.88 mS/cm, 80.0 mS/cm and 111.8 mS/cm) for
calibration.
• EC calibration up to two 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 “Out of cal. range” warning.
• User selectable “Calibration Timeout” to remind when a new
calibration is necessary.
• Extended temperature range on EC channel from –20 to 120 ºC
(–4 to 248 ºF), using temperature sensor inside EC probe.
• Temperature compensation selection
• Temperature reference selection 15 °C, 20 °C or 25 °C.
• Temperature coefficient set
• Lock and user setup Fixed range selection
Other features include:
• Log on demand up to 400 samples
• Log interval with log on stability feature up to 600 records
• Auto Hold feature, to freeze first stable reading on the LCD
• GLP feature, to view last calibration data for pH, Rel mV, ISE, EC or
NaCl.
• PC interface
This instrument can also measure with ORP electrodes (pH channel
input), thanks to their capability to measure mV with a resolution up to
0.1 mV and with ISE electrodes on ppm scale (pH channel input). The
electrode type and unit selection capability and the ISE calibration in up
to five calibration standard solutions make this instrument very useful
for a large range of concentration solutions measurements.
Relative mV feature is also available.
This instrument can also measure in Resistivity, TDS and Salinity on EC
channel.
FUNCTIONAL DESCRIPTION
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