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 three versions:
- equipped with two relays;
- equipped with 0 ÷ 20 mA or 4 ÷ 20 mA current loop;
- equipped with RS-232 output – current results may be stored in PC memory with use of delivered software
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).
- 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, current loop or RS-232 and % or mg/l.
On special order available meter which may collect up to 8000 data sets with chosen time interval. The available values of the interval are 1, 2, 5, 10, 15, 30 and 60 minutes.
If the memory capacity is used up the oldest result is deleted and replaced with a new one. The collected or actual results may be transferred to a PC with use of the USB connector. Delivered in the set software enables the transmission of data including measured result, measured temperature, time and date. Stored results can’t be viewed on the meter’s display, except the minimal and maximal values in given time.
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. |
| ** | Model with memory available on special order. |