Battery Requirements: 4, AA

BOD5/CBOD resolution: Available when used with Hach WIMS BOD Manager software

Cable resistance correction: Digital - not needed

Calibration curves display: Calibration summary data logged and displayed

Calibration Intervals/Alerts/Reminder: 2 hours to 7 days

Compliance: CE.WEEE

Conductivity Accuracy: ± 0.5 % % from (1µS/cm - 200 mS/cm)

Conductivity Measurement Range: 0.01 µS/cm to 200 mS/cm

Conductivity resolution: 5 digits with 2 digits after decimal point

Custom Calibration Standards: User-defined standard sets

Data Export: Download via USB connection to PC or flash stick.
Automatically transfer entire data log or as readings are taken.

Data Memory: 500 results

Data Storage: GLP/ISO compliant reading data stored with calibration details.
Calibration details and check standard readings documented as events in data log.
Automatically store in press to read mode and interval measurement mode.
Manually store in continous read mode.

Digital (intelligent) electrode inputs: 2 channel

Dimensions (H x W x D): 3.5 in x 6.8 in x 9.2 in (89 mm x 173 mm x 234 mm)

Display: Display readings from one or two probes
Simultaneous readings from two probes (HQ440d only)
pH: pH, mV, temperature
Conductivity: Conductivity, TDS, salinity, resistivity, temperature
LDO: dissolved oxygen, pressure, temperature
LBOD: dissolved oxygen, pressure, temperature
ORP/Redox: mV, temperature
Sodium: Sodium, mV, temperature

Display Lock Function: Continuous measurement or press to read mode available with averaging function for LDO measurement.

Display Type: 240 x 160 pixel Display readings from one or two probes
Simultaneous readings from two probes
pH: pH, mV, temperature
Conductivity: Conductivity, TDS, salinity, resistivity, temperature
LDO: dissolved oxygen, pressure, temperature
ORP/Redox: mV, temperature
Sodium: Sodium, mV, temperature

DO Measurement Range: 0.01 to 20.0 mg/L mg/L (0 to 200%)

DO Resolution: 0.01 mg/L or 0.1 % mg/L

Fixed Buffer Selection: IUPAC standards
(DIN 19266) or Technical buffer (DIN 19267) or 4-7-10 series or user defined

Inputs: M12 digital (2) for IntelliCAL probes

Interface Languages: 13**

Internal Data Storage: 500

IP Rating: IP54

ISE Direct Measurement Range: Yes

ISE Electrode Calibration: Electrode specific - see electrode user instructions

Languages: English, French, German, Italian, Spanish, Danish, Dutch, Polish, Portuguese, Turkish, Sweedsh, Czech, Russian

Length: 9.2 in ( 234 mm )

mV Accuracy: ± 0.1 mV

mV Measurement at Stable Reading: 5 stabilization settings

mV Measurement Range: -1500 to 1500 mV

mV Resolution: 0.1 mV

Operating Error Messages: Full text messages

Operating Humidity: 90 % relative humidity (non-condensing)

Operating Interface: Keypad

Operating Temperature: 5 to 45 °C

ORP Electrode Calibration: Predefined ORP standards (including Zobells solution)

Outputs: USB to PC / flash stick

PC Data Transfer Software: included

pH Measurement at stable reading: 5 stabilization settings

Power Requirements (Voltage): 7 V

Printer: Optional accessory

Resolution: 5

Salinity Measurement Range: 0 to 42 g/kg

Salinity Resolution: 0.01 ppt

TDS Measurement Range: 0.0 to 50.0 mg/L

Temperature Accuracy: 0.3 °C

Temperature Compensation: Off, automatic, and manual (auto correction is parameter dependent)

Temperature Range: -10 to 110 °C

Temperature Resolution: 0.1 °C

Warranty: 3 years

Water Resistance: IP54 (Resistant to spray of water; Dust-proof)