Hach HQ40d User Manual

Figure 17 Calibration report
1 Report type (CL = calibration, IC = current calibration) 7 Probe serial number (a “<“ or “>” on the HQ440d meter indicates the probe
position)
2 Parameter (pH, LDO, etc.) 8 Calibration slope/ratio/constant
3 Method name for probe settings 9 Offset—contents vary depending on type of parameter and user settings. May
be blank.
4 Time of calibration, prefaced by “CAL” and displayed as hh:mm in 24 h (or user-
defined) format
10 r²: contents vary depending on type of parameter being read, configuration of
specific method and number of calibration standards used. May be blank.
5 Probe model 11 Operator ID: user-defined; shows “- - -” if undefined
6 Date of calibration (DD-MM-YY or user-defined format)
The calibration history can be printed from the probe data menu. Refer to Figure 18.
English 31

Hach HQ40d Specifications

General

Resolution	0.1 °C
Connectivity	USB
Storage Temperature	-20 to 60 °C
Waterproof Rating	IP67
Display	LCD with backlight
Measurement Parameters	pH, Conductivity, Dissolved Oxygen, ORP
mV Range	-1999 to 1999 mV
Conductivity Range	0.01 µS/cm to 200 mS/cm
Temperature Range	-10 to 110 °C
Data Logging	500 data points
Power Supply	4 AA batteries
Accuracy	±0.1 °C
Operating Temperature	0 - 50 °C (32 - 122 °F)