HD 2105.1-2

HD 2105.1-2 - Temperature – pH Meters

The HD2105.1 and HD2105.2

are portable instruments with a large LCD display. They measure the pH and the redox potential (ORP) in mV. They measure the temperature using Pt100 or Pt1000 immersion, penetration or contact probes. The electrode calibration can be carried out on one, two or three points and the calibration sequence can be chosen from a list of 13 buffers. The temperature probes are equipped with an automatic recognition module and factory calibration data are stored inside.

The HD2105.2 is a datalogger. It stored up to 34,000 pH and temperature samples which can be transferred to a PC from the instrument connected 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 HD2105.1 and HD2105.2 models are fitted with an RS232C serial port and can transfer the acquired measurements in real time to a PC or to a portable printer. The Max, Min and Avg function calculate the maximum, minimum or average values.
Other functions include: the relative measurement REL, the Auto-HOLD function, and the automatic turning off that can also be excluded.

The instruments have IP67 protection degree.

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Technical Specifications:

Length x Width x Height 185x90x40mm
Weight 470g (complete with batteries)
Materials ABS, rubber
Display 2x4½ digits plus symbols
Visible area 52x42mm
Operating conditions
Operating temperature -5…50°C
Storage temperature -25…65°C
Working relative humidity 0…90%RH without condensation
Protection degree IP67
Batteries 4 1.5V type AA batteries
Autonomy 200 hours with 1800mAh alkaline batteries
Power absorbed with instrument off 20µA
Mains Output mains adapter 12Vdc / 1000mA
Security of memorized data Unlimited, independent of battery charge conditions
Date and Time Schedule in real time
Accuracy 1min/month max drift
Measured Values Storage - model HD2105.2
Type 2000 pages containing 17 samples each
Quantity Total of 34000 samples
Storage interval 1s, 5s, 10s, 15s, 30s, 1min, 2min, 5min, 10min,
15min, 20min, 30min and 1h.
Serial Interface
Type RS232C electrically isolated
Baud rate Can be set from 1200 to 38400 baud
Data bit 8
Parity None
Stop bit 1
Flow control Xon / Xoff
Serial Cable lengh Max. 15m
Selectable print interval 1s, 5s, 10s, 15s, 30s, 1min, 2min, 5min, 10min,
15min, 20min, 30min and 1h.
USB Interface - model HD2105.2
Type 1.1 - 2.0 electrically isolated
Input module for the temperature probes 8-pole male DIN45326 connector
pH/mV input Female BNC
Serial interface and USB 8-pole MiniDin connector
Mains adapter 2-pole connector (positive at centre)
pH Measurement by instrument
Measurement range -2.000…+19.999pH
Resolution 0.01 or 0.001pH selectable from menu
Accuracy ±0.001pH
Input impedance >1012O
Calibration error @25°C |Offset|>20mV
Slope <50mV/pH or Slope>63mV/pH
Sensitivity < 85% or Sensitivity > 106.5%
Temperature compensation -50…+150°C automatic/manual

Application software:

DeltaLog9: Software for download and management of the data on PC using Windows 98 to
Vista operating systems