Delta OHM HD3406.2, User Manual, Page: 3 / 44

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HD3406.2
1. Connectors.
2. Battery symbol: indicates the battery level. The symbol does not appear when the external
power supply is connected.
3. CAL key: it starts the conductivity probe calibration.
4. REL key: enables the relative measurement (displays the difference between the current va-
lue and the logged value when the key is pressed); in the menu, decreases the current value.
5. LOG/DUMP LOG key : during normal operation, starts and ends the saving of the data in
the internal memory; in the menu, starts the data transfer from the instrument's memory to
the PC.
6.
χ
- Ω -TDS Key: changes the main variable measurement between conductivity, resistivity,
total dissolved solids (TDS) and salinity.
7. SERIAL/ERASE LOG key : starts and ends the data transfer to the serial/USB communica-
tion port. In the menu, clears the data contained in the instrument's memory.
8. °C/°F key : when the probe is not connected, allows manual modification of the temperature.
When double pressed, changes the unit of temperature measurement from degrees Celsius to
Fahrenheit.
9. Function indicators.
10. key: in the menu, confirms the current selection.
11. Line for symbols and comments.
12. Main display line.
13. ON-OFF/AUTO-OFF key: turns the instrument on and off. When pressed together with the
ENTER key, disables the automatic turn off.
14. MENU key: allows access to and exit from the menu.
15. ENTER key: in the menu, confirms the current selection; when pressed together with the
ON/OFF key, disables the automatic turn off.
16. ESC key: in the menu, cancels the operation in progress without making changes.
17. FUNC : key: during normal operation displays the maximum (MAX), the minimum (MIN)
and the average (AVG) of current measurements.
18. MAX, MIN and AVG symbols.
19. Key : in the menu, decreases the current value.
20. Secondary display line.
21. External mains power supply connector input 12Vdc for
∅
5.5mm - 2.1mm connector .
22. Not used
23. 8-pole DIN45326 connector, input for combined 4-ring or 2-ring conductivity/temperature
probes, for direct 4 wire Pt100 temperature probes and 2 wire Pt1000 probes complete with
TP47 module.
24. 8-pole MiniDin connector for RS232C connection using cable HD2110CSNM, for USB 2.0
connection using cable HD2101/USB, and for S-print-BT printer connection using cable
HD2110CSP.