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Portable Multiparameter Water Quality Meter LMWM-701

Portable Multiparameter Water Quality Meter LMWM-701

Portable Multiparameter Water Quality Meter LMWM-701 is equipped with a backlit LCD display. It is suitable for measuring the PH, ORP, ion concentration, TDS, salinity, conductivity, resistivity and dissolved oxygen. Automatic electrode recognition shows the pH slope and offset. Relative and absolute millivolt modes provide reliable ORP measurements. Data can be transferred easily to computer by using USB interphase. It is reliable, user friendly applicable for outdoor measurements.


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pH Range ~2.000 to 20.000pH
pH Resolution 0.001, 0.01, 0.1pH, selectable
pH Accuracy ±0.002pH
pH Calibration Points 1 to 5 points
pH Buffer Options USA, NIST, DIN, 2 custom buffers
ORP Range ±1999.9mV
ORP Resolution 0.1, 1mV, selectable
ORP Accuracy ±0.2mV
ORP Calibration Points 1 point
ORP Measurement Modes Relative or absolute mV
Ion Concentration Range 0.001 to 19999 (depending on the range of ISE)
Ion Concentration Resolution 0.001, 0.01, 0.1, 1
Ion Concentration Accuracy ±0.5% F.S. (monovalent), ±1% F.S. (divalent)
Calibration Points 2 to 5 points
Calibration Solutions 0.001, 0.01, 0.1, 1, 10, 100, 1000, 10000
Measurement Units ppm, mg/L, ml/L, mml/L
Conductivity Range 0.01 to 20.00, 200.0, 2000µS/cm, 20.00, 200.0mS/cm
Conductivity Resolution 0.001, 0.01, 0.1, 1
Conductivity Accuracy ±0.5% F.S.
Conductivity Calibration Points 1 to 5 points
Temperature Coefficient 10µS, 84µS, 1413µS, 12.88mS, 111.8mS
Reference Temperature Linear (0.0 to 10.0%/°C), pure water
Cell Constant 20/25°C
TDS Range K=0.1, 1, 10 or custom
TDS Resolution 0.00 to 10.00, 100.0, 1000ppm, 10.00, 200.0ppt
TDS Accuracy 0.01, 0.1, 1
TDS Factor ±1% F.S.
Salinity Range 0.1 to 1.0 (default 0.5)
Salinity Resolution 0.00 to 80.00ppt, 0.00 to 42.00psu
Salinity Accuracy 0.01
Resistivity Range ±1% F.S.
Resistivity Resolution 0.00 to 20.00MΩ
Resistivity Accuracy 0.01
DO Range ±1% F.S.
Dissolved Oxygen Resolution 0.00 to 20.00 mg/L
Dissolved Oxygen Accuracy 0.01, 0.1 mg/L, selectable
% Saturation of Oxygen ±0.2 mg/L
Pressure Correction 0.0 to 200.0%
Salinity Correction 0.1, 1%, selectable
Temperature Range ±2.0%
Temperature Resolution 1 or 2 points
Temperature Accuracy 60.0 to 112.5kPa/450 to 850 mmHg, manual
Temperature Offset Calibration 0.0 to 50.0g/L, manual
Temperature Calibration Range 0 to 105°C/32 to 221°F
Temperature Compensation 0.1°C/0.1°F
Stability Criteria ±0.5°C/±0.9°F
Calibration Due Alarm 1 point
Auto-Power Off Reading ±10°C
Memory 0 to 100°C/32 to 212°F, manual or automatic
Output Low or high
Connector 1 to 31 days or off
Display 10, 20 or 30 minutes after last key pressed
Power Stores up to 500 data sets
Battery Life USB communication interface
Dimensions(L×W×H) BNC, 6-pin mini-DIN, 3.5mm jack socket
Weight Custom LCD (80×60mm)

point.png It can store and recall up-to 500 sets of data

point.png 1-5 points push button calibration to automatically rectify pH buffer

point.png Reset function instinctively resumes all settings back to the factory defaults

point.png Automatic temperature compensation provides accurate readings over the entire range

point.png Salinity and barometric pressure compensations remove the measurement error

point.png Water quality meter contains 8 measurement modes

It is widely used for quality testing of water and also used in research and development laboratories and water resources

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Portable Multiparameter Water Quality Meter LMWM-701