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The HD2156.1 and HD2156.2 are portable instruments with a large LCD display. They measure pH, mV, redox potential (ORP), conductivity, liquid resistivity, total dissolved solids (TDS) and salinity using combined 4-ring and 2-ring conductivity/temperature probes. Temperature only is measured by Pt100 or Pt1000 immersion, penetration or contact probes.
The pH electrode calibration, as well as manual, can be carried out automatically on one, two or three points and the calibration sequence can be chosen from a list of 13 buffers. The probe calibration can be performed automatically in one or more of the 147 µS/cm, 1413 µS/cm, 12880 µS/cm or 111800 µS/cm conductivity calibration solutions.
The HD2156.2 instrument is a datalogger. It memorizes up to 20,000 sets of three measurements composed of pH or mV, conductivity or resistivity or TDS or salinity and temperature: these data can be transferred from the instrument connected to a PC via the RS232C serial port or USB 2.0 port. The storing interval, printing, and baud rate can be configured using the menu.
The HD2156.1 and HD2156.2 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.
Printing and, for the model HD2156.2, storing always include three parameters: temperature –
pH or mV – χ or Ω or TDS or g/l.
The Max, Min and Avg function calculates the maximum, minimum or average values.
Other functions include: the Auto-HOLD function and the automatic turning off which can also
be disabled.
The instruments have IP66 protection degree.
By completing profiles, we can ensure you get the best service
![Delta Ohm HD2156 [HD2156.2] pH Meter-Conductivity-Thermometer Data Logger](image/cache/wp/gj/Products/Delta%20-Ohm_HD2156.2-200x200.webp "Delta Ohm HD2156 [HD2156.2] pH Meter-Conductivity-Thermometer Data Logger")
![Delta Ohm HD2156 [HD2156.2] pH Meter-Conductivity-Thermometer Data Logger](image/cache/wp/gj/Products/Delta%20-Ohm_HD2156-probe-200x200.webp "Delta Ohm HD2156 [HD2156.2] pH Meter-Conductivity-Thermometer Data Logger")
