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4
INTRODUCTION
The instrument series HD34… is made up of 4 bench top instruments for electrochemical measures:
pH
,
conductivity
,
dissolved oxygen,
and temperature
.
The
HD3405.2
measures
pH
and the
redox potential
(ORP) in mV. It measures the
temperature
using Pt100 or Pt1000 immersion, penetration or air contact probes.
The pH electrode calibration, as well as manual, can be carried out on one, two or three points and
the calibration sequence can be chosen from a list of 13 buffers.
The displayed data can be stored
(datalogger)
and can be transferred to PC or serial printer thanks
to the multi-standard serial ports RS232C and USB2.0 and software DeltaLog9 (Vers.2.0 and sub-
sequent ones). The storing and printing parameters can be set from menu.
Display, printing and logging always show temperatures in °C °F, and pH or mV.
Other common function of this instrument series include: Max, Min and Avg function, the Auto-
HOLD function, the automatic turning off which can also be disabled.
The instruments have IP66 protection degree.
