

Add to Cart
Designed for your water applications, the Hach HQ440d laboratory meter is an advanced meter that takes the guesswork out of measurements. HQd™ meters connect with IntelliCAL™ probes that automatically recognize the testing parameter, calibration history, and method settings to minimize errors and setup time.
Automatic Buffer Recognition: | Yes |
Barometric Pressure Measurement: | Automatic compensation of DO when using an LDO or LBOD probe |
Calibration: | Demal (1D/ 0.1D/ 0.01D); Molar (0.1M/0.01M/0.001M); NaCl (0.05%; 25µS/cm; 1000µS/cm; 18mS/cm); Standard sea water; User defined |
Calibration Intervals/Alerts/Reminder: | Off, selectable from 2 hours to 7 days |
Communication: | Integrated USB type A (for USB 2.0 flash memory device, printer, keyboard) and Integrated USB type B (for PC) |
Compliance Certifications: | CE.WEEE |
Conductivity measurement: | Yes |
Conductivity measurement: | Temperature correction:None; Linear; NaCl Non-Linear Natural Water. |
Conductivity Measurement Range: | 0.01 µS/cm - 200.0 mS/cm |
Conductivity resolution: | 0.01 µS/cm - 0.1 mS/cm upon selected measuring range |
Contents: | Meter Only |
Custom Calibration Standards: | Yes |
Data Export: | Download via USB connection to PC or flash memory device. Automatically transfer entire data log or as readings are taken. |
Data Memory: | 500 records/FIFO |
Data Storage: | Automatic, GLP ISO compliant reading data stored with calibration details. |
Dimensions: | 859 x 175 x 235 mm |
Display: | Detailed mode/Large mode |
Display Lock Function: | Continuous / Auto-stabilization ("press to read") / At Interval |
Display Type: | 440 x 160 pixel LCD with backlight illumination |
DO Measurement Range: | 0.1 - 20.0 mg/L (ppm) 1 - 200% saturation |
DO Resolution: | 0.1 |
DO sensor calibration:• | 100% (water-saturated air (100%) calibration 100% with 0 (water-saturated air (100%) calibration with 0 point mg/L (calibration with a specified dissolved oxygen concentration (mg/L) solution) mg/L with 0 (calibration with a specified dissolved oxygen concentration (mg/L) solution with 0 point) Factory (calibration with the default LDO calibration) |
Electrode stand: | Optional |
GLP Features: | Date; Time; Sample ID; Operator ID |
Instrument: | Bench |
IP Rating: | IP54 (Resistant to spray of water; Dust-proof) |
ISE Direct Measurement Range: | Yes |
ISE Electrode Calibration: | 2 - 5 points |
Kit?: | No |
Languages: | English, French, German, Italian, Spanish, Danish, Dutch, Polish, Portuguese, Turkish, Swedish, Czech, Russian |
Measurement method: | |
Model:HQ440D – Multi/2 Channels | Probe specific programmed method settings |
mV Measurement at Stable Reading: | Yes |
mV Measurement Range:-1500 - 1500 mV | -1500 - 1500 mV |
mV Resolution: | 0.1 mV |
Needed Cable Length: | NA |
Operating Error Messages: | Clear text error messages displayed |
Operating Humidity: | 90 % relative humidity (non-condensing) |
Operating Interface: | Soft Touch Keypad |
Operating Temperature: | 0 - +60 °C (32 - 140 °F) |
ORP Electrode Calibration: | Predefined ORP standards (including Zobell's solution) |
Parameter: | pH/Oxydo Reduction Potential (ORP) |