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HD2259.2 Laboratory Benchtop Meter. pH or mV, concentration of dissolved oxygen or saturation index and saturation index and temperature. The HD2259.2 measures pH, mV, redox potential (ORP) with pH, redox electrodes or electrodes with separate reference; the concentration of dissolved oxygen in liquids (in mg/l), and saturation index (in %), using SICRAM combined probes of polarographic type with two or three electrodes and integrated temperature sensor.

HD2259.2 pH Meter

Model  Description 
HD 2259.2  pH or mV meter. Concentration of dissolved oxygen.

The data can be transferred from the instrument connected to a PC via the multistandard RS232C serial
port and USB 2.0. The storing parameters can be configured using the menu. The RS232C serial port can
be used to transfer the acquired measurements to a 24 column portable printer in real time (Sprint-BT).
The instruments equipped with HD22BT (Bluetooth) option can transfer data without any connection to a PC or printer fitted with Bluetooth input or through Bluetooth/RS232C converter.
The software DeltaLog11 allows instrument management and configuration, and data processing on PC.

HD2259.2 pH Meter specifications
Measurement of pH by instrument
Measuring range -9.999 - +19.999pH
Resolution 0.01 -  0.001pH selectable from menu
Accuracy ±0.001pH ±1digit
Calibration error @25°C |Offset| > 20mV
Slope > 63mV/pH o Slope < 50mV/pH
Sensitivity > 106.5% or Sensitivity < 85%
Calibration points Up to 5 points from a list of 13 automatically detected
Automatically detected pH standard
solutions (@25°C)
1.679pH - 2.000pH - 4.000pH - 4.008pH - 4.010pH
6.860pH - 6.865pH - 7.000pH - 7.413pH - 7.648pH
9.180pH - 9.210pH - 10.010pH
Measurement of mV by instrument
Measuring range -1999.9 - +1999.9mV
Resolution 0.1mV
Accuracy ±0.1mV ±1digit
Drift after 1 year 0.5mV/year
Measurement of dissolved oxygen by instrument
Resolution 0.01mg/l
Measuring range 0.00 - 90.00mg/l
Accuracy ±0.03mg/l ±1digit
(60...110%, 1013mbar, 20...25°C)
Measurement of saturation index of dissolved oxygen
Measuring range 0.0 - 600.0%
Resolution 0.1%
Accuracy ±0.3% ±1digit (in the range 0.0 - 199.9%)
±1% ±1digit (in the range 200.0 - 600.0%)
Automatic temperature compensation
  0 - 50°C
Measurement of barometric pressure
Measuring range 0.0 - 1100.0mbar
Resolution 0.1mbar
Accuracy ±2mbar ±1digit between 18 and 25°C
±(2mbar+0.1mbar/°C) in the remaining range
Salinity setting
Setting directly from menu or automatically by conductivity
Setting range 0.0 - 70.0g/l
Resolution 0.1g/l
Temperature measurement with the sensor inside the dissolved
oxygen probe
Measuring range 0.0 - 50.0°C
Resolution 0.1°C
Accuracy ±0.1°C
Drift after 1 year 0.1°C/year
Measurement of temperature by instrument
Pt100 measuring range -50 - +150°C
Pt1000 measuring range -50 - +150°C
Resolution 0.1°C
Accuracy ±0.1°C ±1digit
Drift after 1 year 0.1°C/year

Ordering codes
HD 2259.2 Bench-top pH meter-Oxygen meter-Thermometer with back-lighted display to measure pH, mV, ORP, by pH, redox, or separated reference electrodes, the concentration of the dissolved oxygen of liquids, saturation index, by polarographic type combined SICRAM probes and integrated temperature sensor.
Datalogger of pH, mV, dissolved oxygen concentration, saturation index and temperature. RS232 C serial output or USB 2.0 for data download to a PC or printer from memory or in real time. Input for Pt100 or Pt1000 temperature probes provided with SICRAM module. It is equipped with regulated power supply SWD10, instructions manual, software DELTALOG 11.
Electrodes, oxygen probes, calibrating solutions, TP47 series temperature probes with SICRAM module and cables for PC connection have to be ordered separately.