• pH and Dissolved Oxygen Meter
HALDO101

pH and Dissolved Oxygen Meter

  • with PHC101 pH Electrode and LDO101 Dissolved Oxygen Probe

Designed for water quality experts, the Hach HQ40d portable meter is an advanced meter that takes the guesswork out of measurements.

HQd meters connect with smart probes that automatically recognize the testing parameter, calibration history, and method settings to minimize errors and setup time. The durable portable meter and optional rugged probes are designed to withstand years of rugged portable and field use. HQd meters feature a simple user interface that does not require manuals or training to operate.

Portable meter measures critical water quality parameters - without the need for multiple instruments

Two input channels for simultaneous measurement of pH, Conductivity, Optical Dissolved Oxygen (DO), BOD, ORP, Ammonia, Ammonium, Fluoride, Chloride, Sodium, and Temperature - any IntelliCAL™ smart probe.

Intuitive user interface for simple operation and accurate results

Guided calibration and check standard routines reduce calibration errors. Stabilization alerts and visual measurement lock ensure that you can trust in the accuracy of the results.

Trust your measurements - IntelliCAL™ smart probes store all calibrations in the probe

Calibration history allows quick and easy change out of probes without re-calibrating. The HQd™ smart system records serial numbers, current calibration data, user ID, sample ID, time, and date automatically in the data log for complete GLP traceability.

Designed for demanding conditions

Rugged, waterproof (IP67) meter, protective glove, and rugged field case provide worry-free, reliable operation in lab or field environments.

Convenient kit includes everything you need to start testing

Meter kit includes field case, 4 AA batteries, protective meter glove, power adapter, USB/DC power adapter for data transfer, quick-start guide, user manual, and documentation CD.

with PHC101 pH Electrode and LDO101 Dissolved Oxygen Probe

Automatic Buffer Recognition Color-coded: 4.01, 7.00, 10.01 pH;
IUPAC: 1.679, 4.005, 7.000, 10.012, 12.45
DIN: 1.09, 4.65, 9.23
User-defined custom buffer sets
Barometric Pressure Measurement For automatic compensation of DO when using an LDO or LBOD probe
Benchtop
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 Certifications CE
Conductivity Accuracy ± 0.5 % from (1µS/cm - 200 mS/cm)
Conductivity measurement 5 different stability modes
Conductivity Measurement Range 0.01 µS/cm to 400 µS/cm
Conductivity resolution 0.01 µS/cm
Contents Meter + Probe(s) + Field Accessories
Custom Calibration Standards User-defined standard sets
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 results
Data Storage GLP/ISO compliant reading data stored with calibration details.
Calibration details and check standard readings documented 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) 197 mm x 95 mm x 36 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 - 20 mg/L
DO Resolution 0.01 mg/L
Fixed Buffer Selection IUPAC standards
(DIN 19266) or Technical buffer (DIN 19267) or 4-7-10 series or user defined
GLP Features
Inputs 2
Internal Data Storage 500
IP Rating IP67
ISE Direct Measurement Range Electrode specific - see electrode user instructions
Measuring Range ORP -1500 - 1500 mV
mV Accuracy ± 0.1 mV
mV Measurement at Stable Reading -1500
mV Measurement Range -1500 to 1500 mV
mV Resolution 0.1 mV
Operating Error Messages Keypad
Operating Humidity 90 % relative humidity (non-condensing)
Operating Temperature 5 - 45 °C
Parameter pH, mV, ISE, DO, Conductivity, TDS, Salinity, Resistivity, ORP, Temp
pH Accuracy ± 0,002 pH
pH Measurement 0 - 14 pH
pH Resolution 0.001 - 0.1 pH
Probe Type Standard
Resolution 0.1/ 0.01/ 0.001
Salinity Measurement Range 0.01 ppt
Salinity Resolution 0.01 ppt
Simultaneous measurements 2 channels
Sodium resolution 0.001 mg/L (ppm)
Warranty 2 years
Weight 0.323 kg