Delta OHM HD3406.2, User Manual, Page: 4 / 44

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INTRODUCTION
The instrument series HD34… is made up of 4 bench top instruments for electrochemical measures:
pH , conductivity , dissolved oxygen, and temperature .
The HD3406.2 measures conductivity , liquid resistivity, total dissolved solids (TDS), and salin-
ity using combined 4-ring and 2-ring conductivity/temperature probes. Temperature is measured
by Pt100 or Pt1000 immersion, penetration or contact probes.
The probe can be calibrated either manually or automatically resorting to one or more of the 147
μ
S,
1413
μ
S, 12880
μ
S or 111800
μ
S/cm conductivity standard solutions
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 (Version 2.0 or later
versions). The storing and printing parameters can be set from menu.
Display, printing and logging always show temperature in °C °F, and one of the parameters of con-
ductivity measure (
χ o Ω or TDS or NaCl).
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.