HD2127 - 7 - V2.3
HD2127.2
1. Input A for probes, 8-pole DIN45326 connector. It can be connected to a Pt100 temperature
probe with SICRAM module or a probe with direct 4 wire Pt100 sensor, 2 wire Pt1000 or
Ni1000.
2. Input B for probes, 8-pole DIN45326 connector. It can be connected to a Pt100 temperature
probe with SICRAM module or a probe with direct 4 wire Pt100 sensor, 2 wire Pt1000 or
Ni1000.
3. External auxiliary power supply connector input.
4. Battery symbol: displays the battery charge level.
5. Function indicators.
6. Secondary display line.
7. HOLD/key: freezes the measurement during normal operation; in the menu, increases the
current value.
8. FUNC key: displays the maximum (MAX), the minimum (MIN) and the average (AVG) of
current measurements. When pressed together with the UNIT/USER CAL key, starts the
calibration procedure for the probe connected to the instrument.
9. REL/key: enables the relative measurement (displays the difference between the current
value and the logged value when the key is pressed); in the menu, decreases the current value.
10. SERIAL/ERASE LOG key: starts and ends the data transfer to the serial communication port.
In the menu, clears the data contained in the instrument's memory.
11. 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.
12. Mini-USB type B connector for USB 2.0. For the connection to PC (with cable CP23).
13. A-B/MENU key: displays the difference of the temperatures measured at the two inputs A and
B. When pressed together with the FUNC key, allows access to and exit from the menu.
14. ENTER key: in the menu, confirms the current selection.
15. UNIT/USER CAL key: during normal operation selects the unit of measurement for the
temperature between °C, °F or °K; when pressed together with the FUNC key, starts the
calibration procedure of the probe connected to the instrument.
16. ON-OFF/AUTO-OFF key: turns the instrument on and off; when pressed together with the
HOLD key, disables the automatic turn off.
17. MAX, MIN and AVG symbols.
18. Main display line.
19. Line for symbols and comments.
20. 8-pole MiniDin connector for RS232C. For the connection to PC (with cable HD2110CSNM or
C206) or printer (with cable HD2110CSNM).
