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Overview

Portable pH Meter LMPH-402 is a versatile device that can monitor pH, mV, relative mV and temperature when paired with the appropriate probe. It is an excellent meter for a variety of applications and advanced pH analysis in the field. Calibration can be performed up to 5 points, and 500 data point sets can be stored. Calibration and data logs can be easily transferred via USB. A custom LCD displays the parameters operating in the 0 - 105°C temperature range.

Specifications :
pH
Range -2.00 - 20.000 pH
Resolution 0.001, 0.01, 0.1pH, selectable
Accuracy ±0.002pH
Calibration Points 1 to 5 points
pH Buffer Options USA, NIST, DIN, 2 custom buffers
ORP
mV Range ±1999.9mV
Relative mV Range ±1999.9mV
Resolution 0.1, 1mV, selectable
Accuracy ±0.2mV
Calibration Points 1 point
Temperature
Range 0 - 105°C/32 - 221°F
Resolution 0.1°C/0.1°F
Accuracy ±0.5°C/±0.9°F
Offset Calibration 1 point, reading ±10°C
Temperature Compensation 0~100°C, manual or automatic
Stability Criteria Low or high
Calibration Due Alarm 1 to 31 days or off
Slope/Offset Display Yes
Hold Function Manual or auto-endpoint
Auto-Off 10, 20 or 30 minutes after last key pressed
Memory 500 data sets
Communication Interface USB
Connector BNC, 3.5 mm jack socket
Display Custom LCD (80 × 60 mm)
Battery Life Approximately 150 hours (Turn off the )backlight
Power Requirements 3 1.5V AA batteries or DC5V power adapter
Dimensions (L×W×H) 170×85×30 mm
Weight 300 g
Features :
  • -  1 to 5 points calibration with automatic recognition for USA, NIST and DIN buffers
  • -  Automatic electrode diagnosis shows the pH slope and offset
  • -  Automatic temperature compensation ensures accurate readings over the entire range
  • -  Calibration due alarm prompts user to calibrate the meter regularly
  • -  Relative and absolute millivolt modes ensure the reliable ORP measurements
  • -  Auto read function senses and locks the measurement end point
  • -  Setup menu allows setting the pH buffer set, number of calibration points, temperature unit, auto-power off, etc
  • -  Reset function automatically resumes all setting back to the factory defaults
  • -  Expanded memory stores or recalls up to 500 data sets
  • -  USB communication interface for data transfer or connecting a power adapter to meter
  • -  Auto power off effectively conserves battery life
  • -  Multi-mode power scheme
  • -  Ensures durable, rugged performance in outdoor environments
Applications :

pH meters are vastly used in various applications such as food and beverage industries, analysis of quick nutrients availability, hydroponics, pH measurement of soil and other soluble solutions.

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