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Multiparameter portable pH/Conductivity meter contains 6 measurement modes, the meter is suitable for measuring the pH, ORP, conductivity, TDS, salinity and resistivity.

pH Mode:

• Multiparameter portable pH/conductivity meter is equipped with a backlit LCD display.

• 1 to 5 points push-button calibration with auto-buffer recognition.

• Selectable pH buffer group (USA/NIST/DIN) or using the custom calibration solutions.

• Automatic electrode diagnosis with pH slope and offset display.

ORP Mode:

• 1 point offset calibration allows adjusting the displayed value to a known standard.

• Relative and absolute millivolt modes provide the reliable ORP measurements.

• 1 to 5 points calibration, automatically recognizes the conductivity standard solutions.

• Selectable cell constant (K=0.1/1/10), reference temperature (20/25°C), TDS factor, linear/

  pure water compensations, seawater and practical salinity measurement modes.

Other Features:

• Automatic Temperature Compensation ensures accurate readings over the entire range.

• Calibration Due Alarm prompts user to calibrate the meter regularly.

• Stability indicator shows when a measurement is recognized as stable.

• Auto-Read feature senses and locks the measurement endpoint.

• Battery indicator shows the remaining battery capacity.

• Auto-Power Off effectively conserves battery life.

• Calibration report provides the details for checking the electrode performance.

• Setup menu allows setting the 12 parameters, including the number of calibration points,

  stability criteria, temperature unit, date and time, etc.

• Reset feature automatically resumes all settings back to factory default options.

• Expanded memory stores and recalls up to 500 data sets.

• Stored readings can be transferred into the computer by USB communication interface.

• Multi-mode power scheme (batteries, power adapter and USB port) ensures that use the

  meter smoothly.

 Model\t\t902P

   pH\tRange   -2.000~20.000pH

   Accuracy    ±0.002pH

   Resolution    0.1, 0.01, 0.001pH, selectable

   Calibration Points   1 to 5 points

   pH Buffer Options\t\tUSA, NIST, DIN or Custom

   mV\tRange\t\t±1999.9mV

   Accuracy\t\t±0.2mV

   Resolution\t\t0.1, 1mV, selectable

   Calibration Points  1 point

   Measurement Modes\t\tRelative or Absolute mV

   Conductivity\t\t

   Range\t\t0.01~20.00, 200.0, 2000µS/cm, 20.00, 200.0mS/cm

   Accuracy\t\t±0.5% F.S

   Resolution\t\t0.001, 0.01, 0.1, 1

   Calibration Points\t\t1 to 5 points

   Calibration Solutions\t\t10µS/cm, 84µS/cm,1413µS/cm,12.88mS/cm,111.8mS/cm

   Temperature Coefficient\t\t0.0~10.0%/°C

   Compensation Modes\t\tLinear or Pure water

   Cell Constant\t\tK=0.1, 1, 10 or Custom

   Reference Temperature\t\t20°C or 25°C

   TDS Range\t\t0~10.00, 100.0, 1000ppm, 10.00, 100.0ppt (Max. 200ppt)

   Accuracy\t\t±1% F.S

   Resolution\t\t0.01, 0.1, 1

   TDS Factor\t\t0.1~1.0 (Default 0.5)

   Salinity\t\t

   Range\t\t0.00~80.00ppt, 0.00~42.00psu

   Accuracy\t\t±1% F.S

   Resolution\t\t0.01

   Measurement Modes\t\tPractical salinity (psu) or Natural seawater (ppt)

   Resistivity\tRange\t\t0.00~20.00MΩ

   Accuracy\t\t±1% F.S

   Resolution\t\t0.01, 0.1, 1

   Temperature\tRange\t\t0~105°C, 32~221°F

   Accuracy\t\t±0.5°C

   Resolution\t\t0.1°C, 0.1°F

   Calibration Points\t\t1 point

   Calibration Range\t\tMeasured value ±10°C

   General\tTemperature Compensation\t\t0~100°C, 32~212°F, Manual or Automatic

   Data Hold\t\tManual or Auto-Endpoint

   Stability Criteria\t\tLow or High

   Calibration Due Alarm\t\t1 to 31 days or Off

   Power Off\t\tManual or Automatic (10, 20, 30 minutes)

   Reset Function\t\tYes

   Memory\t\tStores up to 500 data sets

   Output\t\tUSB communication interface

   Connector\t\tBNC, 6-pin mini plug

   Display\t\tLCD

   Power\t\t3×1.5V AA batteries or DC5V power adapter

   Battery Life\t\tApproximately 150 hours (Turn off the backlit)

   Dimensions\t\t170(L)×85(W)×30(H)mm

   Weight\t\t300g