- -
6
INTRODUCTION
The HD2205.2, HD2206.2 and HD2256.2 are laboratory instruments for electrochemical measure-
ments: pH, conductivity and temperature. They are fitted with a large backlit LCD display.
The HD2205.2 is fitted with two BNC inputs for pH, mV, redox potential (ORP) measurement us-
ing pH, redox electrodes or separate reference electrodes, and two inputs for pH/temperature probes
complete with SICRAM module.
The HD2206.2 measures conductivity, liquid resistivity, total dissolved solids (TDS) and salinity
using combined 4-ring and 2-ring conductivity/temperature probes. The conductivity probes can
have a direct input or a SICRAM module; the inputs are separate.
The HD2256.2 measures pH, mV, redox potential (ORP) using pH, redox electrodes or separate
reference electrodes; conductivity, liquid resistivity, total dissolved solids (TDS) and salinity us-
ing combined 4-ring and 2-ring conductivity/temperature probes. The inputs are separate. One for
the 4-ring and 2-ring direct probes, the other for the probes fitted with SICRAM module.
The instruments have an input for the immersion, penetration or contact temperature probes. The
sensor can be a Pt100 or Pt1000.
•The pH electrode calibration can be carried out on one or five points, and the calibration se-
quence can be chosen from a list of 13 buffers. The temperature compensation can be auto-
matic or manual.
•The calibration of the conductivity probe can be automatic, by recognition of standard solu-
tions: 147μS/cm, 1413μS/cm, 12880μS/cm, 111800μS/cm or manual with different solutions.
•The pH, conductivity and temperature probes are fitted with a SICRAM module, with the fac-
tory calibration settings already being memorized inside.
The devices of the HD22… series are dataloggers. They memorize up to 2,000 samples of:
•pH or mV and temperature the HD2205.2,
•conductivity or resistivity or total dissolved solids or salinity and temperature the HD2206.2,
•pH or mV, conductivity or resistivity or total dissolved solids or salinity and temperature the
HD2256.2.
The data can be transferred from the instrument connected to a PC via the RS232C serial port or the
USB 2.0 port. The recording parameters can be configured using the menu.
The RS232C serial port can be used for direct printing of the data using a 24 column printer
(S’print-BT).
The instruments equipped with the Bluetooth HD22BT option, can send the data to a PC fitted with
the USB/Bluetooth HD USB.KL1 converter, to a printer with a Bluetooth S’print-BT interface, or to
a PC fitted with a Bluetooth input, without the need of any connection.
The DeltaLog11 dedicated software allows management and configuration of the instrument, and
data processing on the PC.
The instruments have IP66 protection degree.
If not otherwise specified, this manual's descriptions are intended to be applicable to all mod-
els.
