Portable Multi-parameter Water Quality Meter LMPWM-A21

Portable Multi-parameter Water Quality Meter LMPWM-A21 is adapted with different modes for measuring quality of water on different parameters. This meter can measure pH, ORP, Dissolved Oxygen content from test sample. It can store & recalls up to 500 sets of data. It is reliable and user friendly, suitable for outdoor measurements.

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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

Dissolved oxygen

DO concentration range	0.00 to 20.00 mg/L
DO accuracy	± 0.2 mg/L
Calibration points	1 - 2 points
Pressure correction	60.0 to 112.5 kPa, 450 - 850 mmHg
Salinity correction	0 to 50 g/L
% Saturation of Oxygen	0.0 to 200.0 %
Accuracy	± 2.0 %

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

Connector

BNC, 6- pin MINI connector

Display

LCD

Dimension (L × W × H)

170×85×30 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 recalls 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
Dissolved oxygen mode 1-2 points calibration using the air-sealed water & zero oxygen solution
Manual salinity & barometric pressure compensation for accurate readings

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

pH electrodes
Dissolved oxygen electrode
Conductivity electrode
Temperature probe
pH and conductivity calibration solution
AA Batteries
Plastic Carrying case

Temperature probe
Dissolved oxygen electrode filling solutions
Dissolved oxygen film cap
Dissolved oxygen electrode

Available Range :

pH mode : pH measurement range : (-2.000) to 20.000 pH ORP measurement : ORP measurement range : -1999.9 to 1999.9 mV Conductivity measurement : Conductivity measurement range : 0 - 20.00, 200.0, 2000 µS / cm, 20.00, 200.2 mS / cm TDS measurement : TDS range : 0-100 ppt. (max. 200 ppt., depending on factor setting) Temperature compensation : 0 to 100 °C, 32 to 212 °F, Manual or Automatic pH mode : pH measurement range : (-2.000) to 20.000 pH ORP measurement : ORP measurement range : -1999.9 to 1999.9 mV Dissolved oxygen : DO concentration range : 0.00 to 20.00 mg/L Temperature compensation : 0 to 100 °C, 32 to 212 °F, Manual or Automatic pH mode :

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

pH Measurement Range : (-2.000) to 20.000 pH

Related Models :

Portable Multi-parameter Water Quality Meter LMPWM-A21

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Model	Temperature compensation	Stability conditions	Calibration due	Memory	Output	Connector	Display	Dimension (L × W × H)	Weight	Power supply
LMPWM-A20	0 to 100 °C, 32 to 212 °F, Manual or Automatic	Low or high	0 to 31 days	Stores up to 500 data sets	USB communication interface	BNC, 6- pin MINI connector	LCD	170×85×30 mm	300 g	3 × 1.5 V “AA batteries or DC 5 V power adapter
LMPWM-A21	0 to 100 °C, 32 to 212 °F, Manual or Automatic	Low or high	0 to 31 days	Stores up to 500 data sets	USB communication interface	BNC, 6- pin MINI connector	LCD	170×85×30 mm	300 g	3 × 1.5 V “AA batteries or DC 5 V power adapter
LMPWM-A11	0 to 100 °C, 32 to 212 °F, Manual or Automatic	Low or high	0 to 31 days	Stores up to 500 data sets	USB communication interface	-	-	185 × 88 × 32 mm	300 g	3 × 1.5 V “AA batteries or DC 5 V power adapter
LMPWM-A10	0 to 100 °C, 32 to 212 °F, Manual or Automatic	Low or high	0 to 31 days	Stores up to 500 data sets	USB communication interface	-	-	185 × 88 × 32 mm	300 g	3 × 1.5 V “AA batteries or DC 5 V power adapter