Benchtop Multi-parameter Water Quality Meter LD-LMPWM-A43

SKU: LD-LMPWM-A43

Benchtop Multi-parameter Water Quality Meter LD-LMPWM-A43 with large backlit LCD (125 × 100 mm) display, measures pH, ORP, ion concentration, conductivity, TDS, salinity, resistivity and dissolved oxygen. Equipment saves space of the benchtop by combining multiple parameters in one unit. With expanded memory, it stores and recalls up to 500 data sets. Calibration due reminder informs the operator to calibrate the meter regularly. Setup menu allows you to set the number of calibration points, stability criteria, temperature unit, date and time, auto-power off, etc. USB communication interface for data transfer and timed interval readings.

✓ pH features
✓ 1 to 5 points calibration with Automatic recognition of USA, NIST and DIN buffers
✓ Automatic electrode diagnosis shows the pH slope and offset helps user to decide whether to replace sensor
✓ ORP features
✓ 1 point offset calibration, can adjust display value to known standard
✓ Relative and absolute millivolt mode of measurement
✓ Ion Concentration features
✓ 2 to 5 points calibration, including the 8 concentration points can be selected
✓ Different concentration units like ppm, mg/L, mol/L, mmol/L for selection and ionic valence
✓ Automatic electrode diagnosis shows the calibration points and slopes
✓ Conductivity/TDS/Salinity/Resistivity
✓ 1-5 point for calibration with automatically identification of calibration solutions
✓ Selectable cell constant (K=0.1/1/10), reference temperature (20/25°C), TDS factor, linear and pure water compensations, seawater and practical salinity measurement modes
✓ Dissolved Oxygen features
✓ 1 or 2 points calibration using the air-saturated water or zero oxygen solution
✓ Salinity and barometric pressure compensations for accurate readings
✓ Common features
✓ Automatic temperature compensation ensures accurate readings over the entire range
✓ Auto hold function freezes stable, final readings for better viewing and recording
✓ Calibration due alarm reminds user to calibrate the meter regularly
✓ Setup menu allows setting the number of calibration points, stability criteria and temperature unit, date and time, auto-power off, etc.
✓ Reset function automatically resumes all settings back to the factory defaults
✓ Expanded memory stores or recalls up to 500 data sets
✓ Store data and timed interval readings are transferrable into computer via USB communication interface

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pH Mode

pH Range : -2.000 to 20.000 pH

pH Accuracy : ±0.002 pH

pH Resolution : 0.001 / 0.01 / 0.1 pH, selectable

pH Calibration Points : 1 to 5 points

pH Buffer Solutions : USA / NIST / DIN / 2 custom buffers

TDS Mode

TDS Range : 0 to 10.00, 100.0, 1000 ppm, 10.00, 200.0 ppt

TDS Accuracy : ±1% F.S.

TDS Conversion Factor : 0.1 to 1.0 (default 0.5)

TDS Resolution : 0.01, 0.1, 1, automatic

Temperature

Temperature Measurement Range : 0 to 105 °C / 32 to 221 °F

Temperature Measurement Accuracy : ±0.5 °C / ±0.9 °F

Temperature Measurement Resolution : 0.1 °C/°F

Temperature Measurement Calibration Points : 1 point (calibration range- Reading ±10 °C/°F)

Conductivity

Conductivity Range : 0 to 20.00, 200.0, 2000 µS/cm, 20.00, 200.0 mS/cm

Conductivity Accuracy : ±0.5% F.S.

Conductivity Resolution : 0.001, 0.01, 0.1, 1, automatic

Conductivity Calibration Points : 1 to 5 points

Conductivity Solutions : 10 µS / 84 µS / 1413 µS / 12.88 mS / 111.8 mS

Conductivity Temperature Coefficient : 0.0 to 10.0% / °C

Compensation Mode : Yes (Linear and pure water)

Cell Constant : K=0.1, 1, 10 or Custom

Reference Temperature : 20 or 25 °C

ORP(mV) Mode

mV Range : -1999.9 to 1999.9 mV

mV Accuracy : ±0.2 mV

mV Resolution : 0.1 / 1 mV, selectable

mV Calibration Points : 1 point

Measurement Modes : Relative / Absolute mV

Salinity Mode

Salinity Range : 0.00 to 80.00 ppt / 0.00 to 42.00 psu

Salinity Resolution : 0.01

Salinity Accuracy : ±1% F.S.

Resistivity Mode

Resistivity Range : 0.00 to 20.00 MΩ

Resistivity Resolution : 0.01

Resistivity Accuracy : ±1% F.S.

Ion Concentration

Ion Concentration Range : 0.001 to 19999 ppm, mg/l, mol/l, mmol/l (depending on the range of ISE)

Ion Concentration Accuracy : ±0.5% F.S. (monovalent), ±1% F.S. (divalent)

Ion Concentration Resolution : 0.001, 0.01, 0.1, 1, automatic

Ion Concentration Calibration points : 2 to 5 points

Calibration Solutions : 0.001 / 0.01 / 0.1 / 1 / 10 / 100 / 1000 / 10000

Other Specifications

Temperature Compensation Range : 0 to 100 °C / 32 to 212 °F manual or automatic

Data Hold Function : Manual / Auto-read measurement endpoint

Stability Criteria : Low / High

Calibration Due Alarm : 1 to 31 days or off

Output : USB communication interface

Memory : Stores up to 500 data sets

Connector : BNC, 6-pin mini-DIN, 3.5 mm jack socket

Display : Custom LCD (125 × 100 mm)

Power Supply : 5V DC

Dimension (L × W × H) : 210 × 188 × 60 mm

Weight : 1.5 kg

Dissolved Oxygen Mode

Dissolved Oxygen Range : 0.00 to 20.00 mg/L

Dissolved Oxygen Accuracy : ±0.2 mg/L / ±2.0 %

Dissolved Oxygen Resolution : 0.01 / 0.1, selectable

Dissolved Oxygen Calibration Points : 1 or 2 points

% Saturation Range : 0.0 to 200.0 % saturation

Pressure Correction : 60.0 to 112.5 kPa / 450 to 850 mmHg, manual

Salinity Correction : 0.0 to 50.0 g/L, manual

Multi-parameters are used in research testing, agriculture , quality analysis of water, wastewater treatment, other general liquids across water plants, food and beverages production units, laboratories, and institutes.

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