EC911 Benchtop pH/Ion/Conductivity/DO Meter

Order Information: 

1. EC911: pH, Cond./TDS/Salinity/Res. Sensor Made in China. 

2. EC911X: pH, Con./TDS/Salinity/Res. Sensor Made in UK. 

Professional benchtop pH meter, containing 17 setting options, suitable for measuring pH, ORP, ion concentration, conductivity, TDS, salinity, resistivity and DO.

pH Mode:

• 1 to 5 points calibration with automatic recognition for USA, NIST and DIN buffers.

• Automatic electrode diagnosis shows the pH slope and zero offset.

ORP Mode:

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

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

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.

Conductivity/TDS/Salinity/Resistivity Modes:

• 1 to 5 points calibration with automatic recognition for conductivity standards.

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

  pure water compensations, seawater and practical salinity measurement modes.

Dissolved Oxygen Mode:

• 1 or 2 points calibration using the air-saturated water or zero oxygen solution.

• Salinity and barometric pressure compensations eliminate the measurement errors.

Other Features:

• Automatic temperature compensation ensures accurate readings over the entire range.

• Auto-read function senses and locks the measurement endpoint.

• Calibration due alarm reminds the user to calibrate the meter regularly.

• Setup menu allows setting the number of calibration points, stability criteria, temperature unit,

  date and time, auto-power off, 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 for data transfer and timed interval readings.

Specifications:

pH:

1. Range: -2.000 to 20.000 pH

2. Resolution: 0.001/ 0.01/ 0.1pH, selectable

3. Accuracy: ±0.002 pH

4. Calibration: 1 to 5 points

5. pH Buffer Options: USA/ NIST/ DIN/ 2 custom buffers

ORP:

1. Range: -1999.9 to 1999.9 mV

2. Resolution: 0.1/ 1mV, selectable

3. Accuracy: ±0.2mV

4. Calibration: 1 point

5. Measurement Modes: Relative / Absolute mV

Ion Concentration:

1. Range: 0.00 to 19999 (depending on the range of ISE)

2. Resolution: 0.001, 0.01, 0.1, 1, automatic

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

4. Calibration: 2 to 5 points

5. Calibration Solutions:0.001 / 0.01 / 0.1 / 1 / 10 / 100 / 1000 / 10000

6. Measurement Units: ppm, mg/L, mol/L, mmol/L

Conductivity:

1. Range: 0 to 20.00, 200.0, 2000 µS/cm, 20.00, 200.0mS/cm

2. Resolution: 0.001, 0.01, 0.1, 1, automatic

3. Accuracy: ±0.5% F.S.

4. Calibration: 1 to 5 points

5. Calibration Solutions: 10µS / 84µS / 1413µS / 12.88mS / 111.8mS

6. Temperature Coefficient: 0.0 to 10.0%/°C

7. Pure Water Compensation: Yes

8. Reference Temperature: 20/ 25°C

9. Cell Constant: K=0.1/ 1/ 10/ Custom

TDS:

1. Range: 0 to 10.00, 100.0, 1000ppm, 10.00, 200.0ppt

2. Resolution: 0.01, 0.1, 1, automatic

3. Accuracy: ±1% F.S.

4. TDS Conversion Factor: 0.1 to 1.0 (default 0.5)

Salinity:

1. Range: 0.00 to 80.00ppt / 0.00 to 42.00psu

2. Resolution: 0.01

3. Accuracy: ±1% F.S.

Resistivity:

1. Range: 0.00 to 20.00MΩ

2. Resolution: 0.01

3. Accuracy: ±1% F.S.

Dissolved Oxygen:

1. Range: 0.00 to 20.00mg/L / 0.0 to 200.0 % saturation

2. Resolution: 0.01/ 0.1, selectable

3. Accuracy: ±0.2mg/L / ±2.0%

4. Calibration: 1 or 2 points

5. Pressure Correction: 60.0 to 112.5kPa / 450 to 850mmHg, manual

6. Salinity Correction: 0.0 to 50.0g/L, manual

Temperature:

1. Range: 0 to 105°C / 32 to 221°F

2. Resolution: 0.1°C/°F

3. Accuracy: ±0.5°C / ±0.9°F

4. Calibration: 1 point

5. Calibration Range: Reading ±10°C/°F

Other Specifications:

1. Temperature Compensation: 0 to 100°C / 32 to 212°F, manual or automatic

2. Hold Function: Manual / Auto-read measurement endpoint

3. Stability Criteria: Low / High

4. Calibration Due Alarm: 1 to 31 days or off

5. Memory: Stores up to 500 data sets

6. Output: USB communication interface

7. Connector: BNC, 6-pin mini-DIN, 3.5 mm jack socket

8. Display: Custom LCD (125 × 100 mm)

9. Power Supply: 5V DC power adapter

10. Environmental Conditions: 0 to 50°C/ 32 to 122°F, relative humidity < 80%

11. Dimensions: 210 × 188 × 60mm

12. Weight: 1.5kg