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Portable Multi-parameter Water Quality Meter LMPWM-A11

Portable Multi-parameter Water Quality Meter LMPWM-A11 is adapted with different modes for measuring quality of water on different parameters such as pH, ORP, conductivity, TDS, salinity. Its memory can store & recalls up to 500 sets of data. Due to its portable design, it is suitable for outdoor measurements i.e. on site water testing, remote area water testing & for research purpose. It is reliable and user friendly.

pH mode

pH measurement range	(-2.000) to 20.000 pH
pH accuracy	± 0.002 pH
pH calibration points	1 - 5 points
pH calibration solutions	USA, NIST, DIN or user defined

ORP measurement

ORP measurement range	-1999.9 to 1999.9 mV
ORP accuracy	±0.2 mV
ORP calibration points	1 point
ORP calibration solutions	mV & relative mV

Ion measurement

Conductivity measurement

Conductivity measurement range	0 - 20.00, 200.0, 2000 µS / cm, 20.00, 200.2 mS / cm
Conductivity accuracy	± 0.5 % F.S.
Conductivity calibration points	1 - 5 points
Conductivity calibration solutions	10 µS / cm, 84 µS / cm, 1413 µS / cm, 12.88mS / cm, 111.8mS / cm
Temperature coefficient	0.0 to 10.0 % / °C
Compensation modes	Linear or pre water
Cell constant	K = 0.1, 1, 10 or user-defined
Normalization temperature	20 °C or 25 °C

TDS measurement

TDS range	0 to 100 ppt. (max. 200 ppt., depending on factor setting)
TDS accuracy	± 1 % F.S.
TDS factor	0.1 - 1.0 (default 0.5)

Salinity measurement

Salinity range	0 to 100 ppt. (max. 80 ppt.)
Salinity accuracy	± 1 % F.S
Measurement modes	Seawater or practical salinity

Resistivity

Resistivity range	0 to 100 Ω
Resistivity accuracy	± 1 % F.S
Resistivity resolution	0.01, 0.1, 1

Dissolved oxygen

Temperature compensation

0 to 100 °C, 32 to 212 °F, Manual or Automatic

Stability conditions

Low or high

Calibration due

0 to 31 days

Memory

Stores up to 500 data sets

Output

USB communication interface

Dimension (L × W × H)

185 × 88 × 32 mm

Weight

300 g

Power supply

3 × 1.5 V “AA batteries or DC 5 V power adapter

Common Features
Calibration due reminder informs operator to calibrate the meter regularly
Stability indicator displays the status of current measurement
Auto hold function freezes stable, final readings for better viewing and recording
Manual temperature calibration to rectify the deviations in temperature
Automatic temperature compensation for accurate measured value over the entire range
Selectable temperature units (°C or °F) for different application requirements
Expanded memory stores and records up to 500 readings
Help message as an operational guide, helps users for quick access to the parameters
Reset function automatically resumes all the setting back to factory default options
Store data is transferrable into computer via USB communication interface
pH mode
1-5 points push button calibration to automatically identify pH buffer
Convenient to select pH buffer standard (USA/NIST/DIN) or custom
Automatic electrode slope display helps operator whether to replace the sensor
ORP mode
1 point offset calibration to adjust the display value to known standard
Relative & absolute mV measurements for accurate ORP readings
Conductivity / TDS / Salinity / Resistivity Mode
1-5 point for calibration with automatically identification of calibration solutions
Can select cell constant (0.1/1/10) and normalization temperature (20°C or 25°C)
TDS conversion factor, seawater, practical salinity measurements mode to meet different water quality measurement requirements
Linear or pure water compensation improves the measurement accuracy

The portable multi-parameter water quality meter is used for quality testing of water on different parameters in research and development labs, water resources and plants in nearby or remote area.

pH, conductivity & dissolved oxygen electrodes
PH and conductivity electrodes
pH and dissolved oxygen electrodes
conductivity and dissolved oxygen electrodes

Temperature probe
Calibration solutions
Batteries
Carrying case