Hefer OD-3000C Online Dissolved Oxygen Analyzer
In Turkey, Mikron Proses supplies the Hefer OD-3000C online dissolved oxygen analyzer for water treatment, activated sludge, denitrification and fish pond applications. As the Hefer distributor in Turkey, Mikron Proses provides the analyzer with galvanic and optical sensor options, with installation and commissioning.
What the OD-3000C is
The Hefer OD-3000C is a microprocessor-based dissolved oxygen controller and analyzer. It measures dissolved oxygen in water treatment processes and outputs readings in ppm, mg/L, % air saturation and mmHg. The same controller powers and reads both sensor types, so you can select galvanic or optical measurement without changing the electronics.
Sensor options: galvanic or optical
You choose between two sensor technologies for the OD-3000C:
- Standard galvanic cell: supplied with the base unit
- Optional optical/fluorescence immersion probe: fluorescence quenching principle; 0-200 % air saturation; response time < 30 s; IP68 enclosure; 2 inch NPT connection; -5 to +50 °C operating temperature, 1 bar maximum pressure, 10 m cable; service life > 1 year when not exposed to sunlight; no membrane or electrolyte consumption
The optical probe works without membrane or electrolyte consumption.
Key specifications
| Parameter | Value |
|---|---|
| Measuring range | 0-20 ppm and 0-2000 ppb |
| Display units | ppm, mg/L, % air saturation, mmHg |
| Standard sensor | Galvanic cell |
| Optional sensor | Optical/fluorescence immersion probe |
| Optical range | 0-200 % air saturation |
| Optical response time | < 30 s |
| Optical protection | IP68 |
| Optical process connection | 2 inch NPT |
| Optical service life | > 1 year (not exposed to sunlight) |
| Optical operating temperature | -5 to +50 °C |
| Optical maximum pressure | 1 bar |
| Optical probe cable | 10 m |
| Analog outputs | Dual isolated, selectable 0/20 mA or 4/20 mA |
| Relays | Dual set-point relays; autoclean relay with hold function |
| Autoclean modes | Disabled / manual / auto+manual |
| Hold function | Freezes 4-20 mA output at last valid value during washing |
| Temperature compensation | Automatic or manual |
| Enclosure cut-out | 96 x 96 mm (1/4 inch DIN) |
| Protection | Automatic overload protection and reset |
How to choose your configuration
The standard galvanic cell comes with the base unit. If a membrane- and electrolyte-free alternative is wanted, the optional optical probe can be specified. Both are read by the same OD-3000C controller.
Tell us the process (activated sludge, denitrification or aquaculture) and the DO range you need; the 0-20 ppm and 0-2000 ppb ranges cover both aeration-level and low-concentration monitoring.
Specify autoclean if your process has fouling risk. The autoclean relay with hold function prevents blower or automation misoperation by freezing the 4-20 mA output during cleaning cycles.
Applications
The OD-3000C is used in these applications:
- Aeration control in activated sludge and biological treatment
- Precise low-range DO monitoring in denitrification: low-range DO monitoring using the 0-2000 ppb range
- Critical oxygen monitoring in fish ponds and aquaculture
What Mikron Proses does
As the Hefer distributor in Turkey, Mikron Proses selects, supplies and commissions the OD-3000C analyzer with your choice of galvanic or optical probe. Supply includes installation and commissioning.
Related Hefer instruments include the TU series turbidity and suspended solids sensor and the 2030 series transmitters. Datasheets exist for the OD-3000C and for the optical DO sensor.
How to request a quotation
Send your application data through the contact page. Include: process type (activated sludge, denitrification, aquaculture or other), expected DO range, sensor preference (galvanic or optical), and whether you need the Autoclean function. Mikron Proses will return a configuration and quotation based on these inputs.
Frequently Asked Questions
Technical answers from Mikron Proses.
Who supplies the Hefer OD-3000C in Turkey?
Mikron Proses is the Hefer distributor in Turkey. The company supplies the OD-3000C analyzer with galvanic or optical sensors and provides installation and commissioning support.
What is the difference between the galvanic and optical sensor for the OD-3000C?
The standard sensor is a galvanic cell. The optional optical probe uses fluorescence quenching, has no membrane or electrolyte consumption, and carries an IP68 rating with 2 inch NPT connection. Both connect to the same OD-3000C controller.
What does the autoclean function do?
The autoclean relay operates in disabled, manual, or auto+manual modes. During cleaning, a hold function freezes the 4-20 mA output at the last valid value so that blowers or automation do not react to the temporary measurement disturbance.
Can the OD-3000C monitor low dissolved oxygen levels in denitrification?
The measuring range includes 0-2000 ppb, and low-range DO monitoring in denitrification is one of the listed applications.
Is the OD-3000C used in fish ponds?
Yes. Critical oxygen monitoring in fish ponds and aquaculture is listed among its applications.
Planning a project? Send us your flow rate, feed water source and target water quality to [email protected] — our engineers will reply with a technical proposal.