BandC electronics OD 8325 Fluorescence Dissolved Oxygen Sensors
OD 8325/8525
Fluorescence Dissolved Oxygen
Sensors
These sensors are designed for measuring dissolved oxygen using the fluorescence phenomenon. OD 8325 sensor is for submersible installation. OD 8525 sensor is for overflow and in-line installation. Thanks to the analog and digital outputs, the sensors can be connected to the most common PLC’s or data acquisition boards. B&C Electronics offers MC 6587 and MC 7687 multi-channel controllers that allow complete management of up to three sensors, displaying the measurements and the messages that guide calibration and configuration.
Measuring method:
A light pulse of a specific wavelength and a special substance is deposited on a transparent layer in contact with the liquid (or air). The light energy is absorbed and partially re-emitted in the form of a light pulse at a longer wavelength. This phenomenon is called fluorescence. The oxygen molecules in contact with the sensitive layer attenuate the fluorescence (quenching) in relations to their concentration. The digital processing of the fluorescence allows the measurement of oxygen concentration. The measuring method does not require electrolytes.
Technical Specifications
| Technical Specifications | |
| Ranges | 0/200.0 % air saturation – 0/20.00 ppm |
| Scalability factor 4/20 mA | 10/150 % |
| Resolution | 0.1 % sat. – 0.01 ppm |
| Power supply | 9/36 VDC |
| Accuracy | ± 1.0 % sat. < 10.0 % sat. ± 2.0
% sat. > 10.0 % sat. |
| Repeatability | ± 0.5 % of the scale |
| Drift | < 1 % year |
| Response time | 95 % < 60 seconds |
| Load | 600 Ohm max. a 24 Vdc |
| Digital output | RS 485 isolated |
| Protocols | 0/50 °C |
| Dual filter software | 2/220 seconds |
| Current loop | 4/20 mA isolated |
| Protocols | B&C ASCII e Modbus RTU (03, 06,
16 functions) |
| Baud rate | 2400 / 4800 / 9600 / 19200
baud |
| Probes ID | 01/99 (B&C protocol) 01/243 (Modbus protocol) |
| Probes network | 32 max. |
| Operating temperature | 60 °C max. |
| Operating pressure | 6 bar at 25 °C (OD 8525) 1 bar
at 25 °C (OD 8325) |
| Dimensions OD 8525 | L=143 mm, D=40 mm |
| Dimensions OD 8325 | L=165 mm, D=60 mm |
| Weight OD 8525 | Body 160 g, cable 640 g |
| Weight OD 8325 | Body 420 g, cable 640 g |
| Body | PVC-C |
| Cable | 10 m (100 m max.), PVC sheath |
| Protection | IP 68 |
www.roycewater.com.au Product Catalogue Royce Water Technologies
Documents / Resources
 |
BandC electronics OD 8325 Fluorescence Dissolved Oxygen Sensors [pdf] Owner's Manual OD 8325, OD 8325 Fluorescence Dissolved Oxygen Sensors, Fluorescence Dissolved Oxygen Sensors, Dissolved Oxygen Sensors, Oxygen Sensors, Sensors |
