OXYGEN CONTROLLER CO-421
CO-421 is a stationary device used for continuous measurements of concentration of oxygen in clear water, sewage and temperature measurements. The measurement may be made in % or in mg/l.
The controller is available in two versions:
1. Equipped with two relays to control valves and signalisation system.
2. Equipped with 0 ÷ 20 mA current loop.
Characteristic features:
- Equipped with a backlit LCD display.
- The device has an automatic temperature compensation system.
- The device enables 2-point calibration of the oxygen sensor in 0% and 100%.
- It is possible to calibrate it without the need of disconnecting the outputs.
- In case of measurements in mg/l possibility of introducing the salinity and pressure values influencing the measurement (measured with other meters).
- Internal data-logger (8000 data sets) for data collecting and transfer to a PC.
- Periodically, the sensor should be calibrated and manually cleaned.
- Powered by 12 V adapter.
- 24 months of warranty.
- High accuracy at an affordable price.
When ordering, the version and unit of measurement should be specified – relays or current loop and % or mg/l.
The meter enables storing of 8000 results. The built-in memory allows you to remember the results with a set time interval: the shortest 1 minute, and the next possibilities : 2, 5, 10, 15, 30, 60 minutes. When the memory is full, the oldest result is deleted and a new one is added. The results can be transferred to a computer via USB. The delivered in the set computer software allows to transfer the results of the measured function and temperature with the date and time of recording.
COG-2 oxygen sensor
Depending on usage, we recommend galvanic oxygen sensors: COG-1, COG-1t with built-in temperature sensor or COG-2 sensor with weight. The sensors may be mounted in immersible or flow heads, chosen depending on the measurement conditions. COG-2 may be used for measurements in water or sewage without the head.
TECHNICAL DATA
| Function | Oxygen % | Oxygen mg/l | Temperature |
|---|---|---|---|
| Range | 0 ÷ 199.9 % | 0 ÷ 19.99 mg/l | -50.0 ÷ 199.9 °C |
| Accuracy (± 1digit) | ±2 %* | ±0.2 mg/l* |
±1 °C with Pt-1000B probe |
| Temperature compensation | - | 0 ÷ 40°C | - |
| Memory | 8000 data sets collected with chosen time interval | ||
| Dimmensions (mm) / weight | L = 149, W = 82, H = 22 / 210g | ||
| Power supply | 12 V / 100 mA power adapter | ||
| Relays' parameters | 2A/250VAC/30VDC | ||
| Isolation class | according to PN-83/T-06500 | ||
| Radioelectric interference | N level | ||
| * | With oxygen sensor, at calibration temperature. |