Delta OHM HD2109.1, Руководство по эксплуатации

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HD2109
- 3 -
V2.4
INTRODUCTION
The
HD2109.1 and HD2109.2 are portable instruments with a large LCD display. They measure the
concentration of dissolved oxygen in liquids (in mg/l), the saturation index (in %) and the tem-
perature using SICRAM combined probes of polarographic , with two or three electrodes, and
galvanic type with integrated temperature sensor. Temperature only is measured by Pt100 -
SICRAM or direct 4 wires - immersion, penetration or contact probes.
Thanks to an internal pressure sensor, the instruments automatically compensate for barometric
pressure. The instrument anticipates automatic compensation of the oxygen probe membrane per-
meability and of the salinity of the liquid being examined.
The dissolved oxygen probe's quick calibration function guarantees timely correctness of the per-
formed measurements.
The dissolved oxygen and temperature probes are fitted with an automatic detection module, with
the factory calibration settings already being memorized inside.
The HD2109.2 is a
datalogger . It memorizes up to 18,000 dissolved oxygen concentration, satura-
tion index measurements, barometric pressure and temperature samples which can be transferred
from the instrument connected to a PC via the RS232C serial port or USB 2.0 port. The storing in-
terval, printing, and baud rate can be configured using the menu.
The HD2109.1 and HD2109.2 models are fitted with an RS232C serial port and can transfer the ac-
quired measurements to a PC or to a portable printer in real time.
Printing and, for the model HD2109.2, logging always include the temperature, in °C or °F, the
concentration of dissolved oxygen in liquids (in mg/l), the saturation index (in %) and the baromet-
ric pressure (in mbar).
The
Max , Min and Avg function calculates the maximum, minimum or average values.
Other functions include: the relative measurement REL, the Auto-HOLD function, and the auto-
matic turning off which can also be disabled.
The instruments have IP66 protection degree.
This manual describes the HD2109.1 and HD2109.2 models: if not otherwise specified, the de-
scription is intended to be applicable to both models.