WATERPROOF pH / ORP meter CPR-411
The most important features:
- Simple field and laboratory meter.
- Used for simultaneous pH, mV (redox potential) and temperature measurements.
- The meter may be used for measurements in swimming pools.
- Easy in use.
- Calibration of the pH electrodein 1, 2 or 3 points. (pH: 4.00, 7.00, 9.00 or 4.00, 7.00, 10.00).
- The model is equipped with separate BNC-50 connectors for pH and redox electrodes, what enables simultaneous meassurement of this parameters.
- Memory of 50 results.
- No PC connection.
Detailed description:
Characteristic features:
- Depending on the chosen electrode it may be used for measurements in clean or contaminated water in the field or in the laboratory.
- The meter may be used for measurements in swimming pools.
- The model is equipped with separate BNC-50 connectors for pH and redox electrodes and Chinch (RCA) connector for the temperature probe.
- The pH and redox combination electrodes are isolated one from another.
- Small size and low weight make working in the field easier.
- Large easy to read display enables simultaneous readout of one measuring function and temperature value or two measuring functions (pH and redox).
- Calibration of the pH electrode in 1, 2 or 3 points. (pH: 4.00, 7.00, 9.00 or 4.00, 7.00, 10.00).
- Automatic buffer detection.
- Automatic temperature compensation.
- Readout of the electrode's slope and offset.
- Memory of 50 results.
- Possibility of automatic calculation of the redox potential result, received with the chloride/silver electrode, to the hydrogen electrode.
- Waterproof housing (IP-66) enables work in difficult conditions.
- Battery powered, for work in the laboratory a power adapter may be used (optional equipment).
- Automatic switch off function to save the battery.
- 24-month warranty for the meter, 12-month warranty for the electrode.
- Affordable price.
The standard set includes CT2B-121 temperature sensor with Pt-1000B resistor, ERS-2 redox electrode, EPP-1 pH electrode for measurements in clean water. It should not be used in other types of liquid. Measurements in liquids with sediments should be made with use of IJ-44A pH electrode, which enables measurements in various samples of both pure and contaminated liquids and semi-solids. Its unusual construction (”intermediate junction”) protects the real junction (diaphragma) of the electrode against clogging, ensures stable measurements in these types of liquids or semi-liquid masses, in which other electrodes stop working quickly. When properly handled and maintained, the electrode's lifetime is longer than the standard electrodes.
TECHNICAL DATA
Function | pH | Redox / mV | Temperature |
---|---|---|---|
Range | 0.00 ÷ 14.00 pH | ± 1999 mV | -50.0 ÷ 199.9 °C |
Resolution | 0.01 pH | 1 mV | 0.1 °C |
Accuracy (± 1 digit) | ±0.01 pH* | ±1 mV* | ±0.1 °C** |
Input impedance | >1012Ω | >1012Ω | - |
Temperature compensation | -5 ÷ 110 °C | - | - |
Power supply | 9 V battery, 12 V / 100 mA power adapter (option) | ||
Weight | 210 g | ||
Dimensions (mm) | L = 149, W = 82, H = 22 |
* | The accuracy of the meter only. |
** | The accuracy of the meter only. The total error includes the meters and probe’s accuracy. In the range 0 ÷ 100 °C the acceptable error of the probe with Pt-1000B resistor: ±0.8 °C, with Pt-1000A resistor: ± 0.35 °C. |