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 electrode in 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, which enables simultaneous measurement of these 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 inputs are isolated from each other.
- 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 liquids. Measurements in liquids with sediments should be made with use of IJ44A 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 (diaphragm) 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 may be efficient for several years.
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 meter’s 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. |

