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Portable pH Conductivity Dissolved oxygen ORP Salinity meter

Measurement Parameters

• 900P: pH, mV, relative mV , conductivity, 

TDS, DO, temperature, ion concentration

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Feature
pH

• Multiparameter water quality meter is equipped with a 3.5 inches backlit LCD display• 1 to 5 points calibration with automatic recognition for USA, NIST and DIN buffers• Automatic electrode diagnosis shows the pH slope and offset

ORP

• 1 point offset calibration allows adjusting the displayed value to a known standard• Relative and absolute millivolt modes ensure the reliable ORP measurements

Conductivity/TDS

• 1 to 5 points calibration with automatic recognition for conductivity standards• Selectable cell constant, reference temperature, TDS factor, linear and pure water compensations, seawater and practical salinity measurement modes

• Automatic electrode diagnosis shows the calibration points and factors

Dissolved Oxygen

• 1 or 2 points calibration using the air-saturated water or zero oxygen solution• Salinity and barometric pressure compensations eliminate the measurement error

Ion Concentration Mode

• 2 to 5 points calibration, including the selection of 8 concentration points.

• Automatic electrode diagnosis shows the calibration points and slopes.

• Direct ion concentration readout simplifies the measurement process.

• Selectable concentration units (ppm, mg/L, mol/L) and ionic valency.

 General Features

• Automatic temperature compensation ensures accurate readings over the entire range• Auto-Read function senses and locks the measurement endpoint• Calibration due alarm prompts user to calibrate the meter regularly• Auto-Power Off effectively conserves battery life

• Setup menu allows setting the number of calibration points,resolution,stability criteria, temperature unit, date and time, etc.

• Reset function automatically resumes all settings back to the factory defaults• Expanded memory stores or recalls up to 500 data sets• USB communication interface is easy to transfer data to PC• Multi-mode power scheme (batteries, power adapter and USB port) ensures that using the meter smoothly

 

Specification

Model

LH-900P

pH

Range

-2.000~20.000pH

Accuracy

±0.002pH

Resolution

0.001, 0.01, 0.1pH, selectable

Calibration Points

1 to 5 points

mV

Range

±1999.9mV

Accuracy

±0.2mV

Resolution

0.1, 1mV, selectable

Calibration Points

1 point

Measurement Modes

Relative or absolute mV

Conductivity

Range

0.01~20.00, 200.0, 2000µS/cm, 20.00, 200.0mS/cm

Accuracy

±0.5% F.S

Resolution

0.001, 0.01, 0.1, 1, automatic

Calibration Points

1 to 5 points

Calibration Solutions

10µS/cm, 84µS/cm, 1413µS/cm, 12.88mS/cm, 111.8mS/cm

Temperature Coefficient

Linear (0.0~10.0%/°C) or pure water compensation

Cell Constant

K=0.1, 1, 10 or custom

Reference Temperature

20°C or 25°C

TDS

Range

0~10.00, 100.0, 1000ppm, 10.00, 100.0ppt (Max. 200ppt)

Accuracy

±1% F.S

Resolution

0.01, 0.1, 1, automatic

TDS Factor

0.1~1.0 (Default 0.5)

Dissolved Oxygen

DO Range

0.00~20.00mg/L

Accuracy

±0.2mg/L

Resolution

0.01, 0.1mg/L, selectable

% Saturation of Oxygen

0.0~200.0%

Pressure Correction

60.0~112.5kPa, 450~850mmHg, manual

Ion Concentration

Nitrates,fluorides; chlorides

Range

0.00 to 19999 (depending on the range of ISE)

Resolution

0.001, 0.01, 0.1, 1, automatic

Accuracy

±0.5% F.S. (monovalent), ±1% F.S. (divalent)

Calibration

2 to 5 points

Measurement Units

ppm, mg/L, mol/L, mmol/L

Temperature

Range

0~105°C, 32~221°F

Accuracy

±0.5°C, ±0.9°F

Resolution

0.1°C, 0.1°F

Calibration Range

Measured value ±10°C

General

Temperature Compensation

0~100°C, 32~212°F, manual or automatic

Memory

Stores up to 500 data sets

Power

3×1.5V AA batteries or DC5V power adapter

Dimensions and Weight

170(L)×85(W)×30(H)mm, 300g

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