DISSOLVED OXYGEN DIGITAL METER 

HD2109.1 Oxygen –Temperature measuring instrument which measures dissolved oxygen, saturation index complete with temperature sensor. Temperature is measured by Pt100 probes with SICRAM module, measuring range –200°C +650°C. Storage of maximum, minimum, average value, RS232 C output for data transfer in real time to a PC or printer.
Functions: REL, HOLD and auto power off which can be disabled, IP 67 protection degree.
HD2109.2 Oxygen –Temperature measuring instrument which measures dissolved oxygen, saturation index complete with temperature sensor. Temperature is measured by Pt100 probes with SICRAM module, measuring range –200°C +650°C. Datalogger which stores the maximum, minimum, average value, RS232 C output for data transfer in real time to a PC or printer.
Functions: REL, HOLD and auto power off which can be disabled, IP 67 protection degree.

The HD2109.1 and HD2109.2 are portable instruments with a large LCD display.
They measure the concentration (in mg/l) of dissolved Oxygen in liquids, the saturation index (in %) and the temperature using SICRAM combined probes of polarographic type with two or three electrodes
and integrated temperature sensor.
Temperature only is measured by Pt100–SICRAM or direct 4 wire–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 permeability and of the salinity of the liquid being examined.
The dissolved Oxygen probe’s quick calibration function guarantees timely correctness of the performed 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, saturation index measurements, barometric pressure and temperature samples which can be transferred from the instrument connected to a PC via the multi-standard RS232C serial port and USB 2.0.
The storing interval, 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 acquired measurements to a PC or to a portable printer in real time.
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 automatic turning off which can also be disabled.

INSTRUMENT TECHNICAL CHARACTERISTICS
Instrument
Dimensions
(Length x Width x Height) 185x90x40mm
Weight 470g (complete with batteries)
Materials ABS, rubber
Display 2x41⁄2 digits plus symbols
Visible area: 52x42mm
Operating conditions
Working temperature -5…50°C
Storing temperature -25…65°C
Working relative humidity 0…90%RH without condensation
Protection degree IP67
Measurement of the concentration of dissolved Oxygen
Measurement range 0.00…90.00mg/l
Resolution 0.01mg/l
Accuracy (60…110%,
1013mbar, 20…25°C) ±0.03mg/l±1digit
Measurement of the saturation index of dissolved Oxygen
Measurement range 0.0…600.0%
Resolution 0.1%
Accuracy ±0.3% ±1digit
Measurement of barometric pressure
Measurement range 0.0…1100.0mbar
Resolution 0.1mbar
Accuracy ±2mbar±1digit between 18 and 25°C
±(2mbar+0.1mbar/°C) in the remaining range
Setting the salinity
Measurement range 0.0…70.0mg/l
Resolution 0.1mg/l
Temperature measurement with the sensor inside the dissolved Oxygen probe
Measurement range 0…+45°C
Resolution 0.1°C
Accuracy ±0.25°C
Drift after 1 year 0.1°C/year
Temperature measurement by Instrument with Pt100 probe
Pt100 measurement range -200…+650°C
Resolution 0.1°C
Accuracy ±0.25°C
Drift after 1 year 0.1°C/year

ORDER CODES
HD2109.1K: The kit is composed of: instrument HD2109.1, calibrator DO9709/
20, connection cable for serial output HD2110CSNM, 4 1.5V alkaline batteries, operating manual, case and DeltaLog9 software.
The dissolved Oxygen and temperature probes must be ordered separately.
HD2109.2K: The kit is composed of: instrument HD2109.2 datalogger, calibrator DO9709/20,
connection cable for serial output HD2101/USB, 4 1.5V alkaline batteries, operating manual,
case and DeltaLog9 software.
The dissolved oxygen and temperature probes must be ordered separately.
HD2110CSNM: 8-pole connection cable MiniDin - Sub D 9-pole female for RS232C.
HD2101/USB: Connection cable USB 2.0 connector type A - 8-pole MiniDin (not
suitable for HD2109.1K).
DeltaLog9: Software for download and management of the data on PC using
Windows 98 to XP operating systems.
AF209.60: Stabilized power supply at 230Vac/9Vdc-300mA mains voltage.
S’print-BT: On request, portable, serial input, 24 column thermal printer, 58mm paper width.
DO9700: zero solution.
DO9701: electrolyte solution.
Combined dissolved Oxygen/temperature probes
DO9709 SS: The kit includes: combined probe for measurement of O2 and temperature with replaceable membrane, three membranes, 50ml of zero solution, 50ml of electrolyte solution.
Cable length 2m. Ø 12mm x 120mm.
DO9709 SS.5: The kit includes: combined probe for measurement of O2 and temperature,
replaceable membrane, Ø 12mm x Ø 12mm. Cable length 5m, three membranes,
50ml of zero solution, 50ml of electrolyte solution.
DO9709 SS.10: The kit includes: combined probe for measurement of O2 and temperature,
replaceable membrane, Ø 12mm x Ø 12mm. Cable length 10m, three membranes,
50ml of zero solution, 50ml of electrolyte solution.
Temperature probes complete with SICRAM module
TP87: PT100 sensor immersion probe. Stem Ø 3 mm, length 70 mm.
Cable length 1 meter.
TP472I: Pt100 sensor immersion probe. Stem Ø 3 mm, length 300 mm.
Cable length 2 metres.
TP472I.0: Pt100 sensor immersion probe. Stem Ø 3 mm, length 230 mm.
Cable length 2 metres.
TP473P.0: Pt100 sensor penetration probe. Stem Ø 4mm, length 150 mm.
Cable length 2 metres.
TP474C.0: Pt100 sensor contact probe. Stem Ø 4mm, length 230mm, contact
surface Ø 5mm. Cable length 2 metres.
TP472I.5: Pt100 sensor immersion probe. Stem Ø 6mm, length 500 mm.
Cable length 2 metres.
TP472I.10: Pt100 sensor immersion probe. Stem Ø 6mm, length 1000mm.
Cable length 2 metres.