HQ440D Laboratory Dual Input, Multi-Parameter Meter - pH, Conductivity, Optical Dissolved Oxygen, ORP, and ISE Hach

Specifications

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 ( 0.1 M/ 0.01 M/0.001 M );

NaCl ( 0.05 %; 25 µS/cm; 1000 µS/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 ) & 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 - 0.1 mS/cm upon selected measuring range

Conductivity resolution

0.01 µS/cm - 200.0 mS/cm

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 ( 3.38 x 6.88 x 9.25 in.)

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

Languages

English, French, German, Italian, Spanish, Danish, Dutch, Polish, Portuguese, Turkish, Swedish, Czech, Russian

Measurement Method

Probe specific programmed method settings

Model

HQ440D – Multi/2 Channels

mV Measurement at Stable Reading

Yes

mV Measurement Range

-1500 - 1500 mV

mV Resolution

0.1 mV

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 )

Conductivity/Total Dissolved Solid ( TDS )/Salinity/Resistivity

Dissolved Oxygen ( DO )

Biochemical Oxygen Demand ( BOD )

Ion Selective Electrode ( ISE )

Ammonia, Ammonium, Chloride, Fluoride, Nitrate, Sodium

PC Data Transfer Software

HQd Series Meter Data Transfer Utility

pH Buffer Sets

Color-coded: 4.01, 7.00, 10.01 pH;

IUPAC: 1.679, 4.005, 7.000, 10.012, 12.45 pH

DIN: 1.09, 4.65, 9.23 pH

User-defined custom buffer sets

pH Electrode calibration

1 - 3 Calibration points

Calibration summary data logged and displayed

pH Measurement Range

0 - 14 pH

pH Resolution

Selectable :

0.001/0.01/0.1 pH

Printer

Yes, Optional

Probes included

None

Resistivity Measurement

2.5 Ω.cm - 49 MΩ.cm

Resistivity Resolution

0.1

Salinity Measurement Range

0 - 42 ( ppt ) ( ‰ )

Salinity Resolution

0.01 ( ppt ) ( ‰ )

Simultaneous measurements

Yes

TDS Measurement Range

0.00 mg/L - 50.0 g/L as NaCl

TDS Resolution

0.01 mg/L - 0.1 g/L upon measuring range.

Temperature Compensation

Automatic Temperature compensation for pH

Temperature Measurement

°C or °F

Temperature Range

-10 °C - 110 °C

Temperature Resolution

0.1

Warranty

1 year

Weight

750 g (1.65 lb ) without batterie; 850 g ( 1.87 lb ) with batteries