benchtop digital pH/conductivity/TDS/salinity meter for laboratory use

902

Characteristics:

pH Mode:
1. Professional benchtop pH/Conductivity meter is equipped with a large backlit LCD display.
2. 1 to 5 points push-button calibration with auto-buffer recognition.
3. Selectable pH buffer standard (USA/NIST/DIN) or using the custom calibration solutions.
4. Automatic electrode slope display helps user decide whether to replace sensor.
ORP Mode:
1. Single point offset calibration allows adjusting the displayed value to a known standard.
2. Relative and absolute millivolts measurement modes provide accurate ORP readings.
Conductivity/TDS/Salinity/Resistivity Mode:
1. 1 to 5 points push-button calibration with automatic calibration solution recognition.
2. Selectable cell constant (0.1/1/10), normalization temperature (20/25°C), TDS conversion factor, seawater and practical salinity measurement modes.
3. Linear or pure water compensation improves measurement accuracy of meter.
Other Features:
1. Automatic Temperature Compensation provides accurate reading over the entire range.
2. Calibration Due Reminder prompts user to calibrate the meter regularly.
3. Stability indicator automatically shows current measurement status.
4. Auto-Hold function freezes stable measured value for easy viewing and recording.
5. Manual temperature calibration corrects temperature deviation.
6. Selectable temperature unit (°C or °F) meets different application requirements.
7. Automatic electrode diagnosis shows zero point offset and slope of the electrode.
8. Help message as a operational guide that helps you quickly begin using the meter.
9. System menu allows setting the 12 parameters, including the number of calibration points,resolution, stability condition, measurement unit, etc.
10. Reset feature automatically resumes all parameters back to factory default settings.
11. Expanded memory stores and recalls up to 500 readings.
12. Built-in real-time clock stamps stored data to meet GLP standard.
13. Stored data can be transferred into computer by USB communication interface.

Technical data:

Model	902
pH
Range	-2.000~20.000pH
Accuracy	±0.002pH
Resolution	0.1, 0.01, 0.001pH, Selectable
Calibration Points	1 to 5 points
Calibration Solutions	USA, NIST, DIN or User-defined
Temperature Compensation	0~100°C, 32~212°F
Compensation Mode	Manual or Automatic
mV
Range	-1999.9~1999.9mV
Accuracy	±0.2mV
Resolution	0.1, 1mV, Selectable
Calibration Points	1 point (Only for Relative mV mode)
Calibration Range	±200mV
Conductivity
Range	0~20.00, 200.0, 2000µS/cm, 20.00, 200.0mS/cm
Accuracy	±0.5% F.S
Calibration Points	1 to 5 points
Calibration Solutions	10µS/cm, 84µS/cm,1413µS/cm,12.88mS/cm,111.8mS/cm
Temperature Compensation	0~100°C, 32~212°F, Manual or Automatic
Temperature Coefficient	0.0~10.0%/°C
Compensation Modes	Linear or Pure Water
Cell Constant	K=0.1, 1, 10 or User-defined
Normalization Temperature	20°C or 25°C
TDS
Range	0~100ppt (Max. 200ppt, depending on factor setting)
Accuracy	±1% F.S
TDS Factor	0.1~1.0 (Default 0.5)
Salinity
Range	0~10ppt (Max. 80ppt)
Accuracy	±1% F.S
Measurement Modes	Seawater or Practical Salinity
Resistivity
Range	0~100MΩ
Accuracy	±1% F.S
Resolution	0.01, 0.1, 1
Temperature
Range	0~105°C, 32~221°F
Accuracy	±0.5°C, ±0.9°F
Resolution	0.1°C
Calibration Points	1 point
Calibration Range	Measured value ±10°C
Others
Hold Function	Manual or Automatic
Stability Conditions	Low or High
Calibration Due	0 to 31 days
Power Off	Manual or Automatic (10, 20, 30 minutes)
Reset Function	Yes
Memory	Stores up to 500 data sets
Output	USB Communication Interface
Connector	BNC, 6-pin Mini Plug
Display	LCD (130×110mm)
Power Requirements	DC5V, using AC adapter, 220VAC/50Hz
Dimensions	210(L)×188(W)×60(H)mm
Weight	1.5kg

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