Portable Multi-parameter Water Quality Meter LMPWM-A20

Overview

Portable Multi-parameter Water Quality Meter LMPWM-A20 is adapted with different modes for measuring quality of water on different parameters. This meter can measure pH, ORP, conductivity, TDS content from test sample. It can store & recalls up to 500 sets of data. It is reliable and user friendly, suitable for outdoor measurements.

Specifications :

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

Features :

• -  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
• -  Conductivity / TDS 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