CO2 4-20mA Transmitter
Three wire 4 to 20 mA sensor detects carbon dioxide concentration from 0 to 3000 ppm.
The PHG transmitter measures CO2 concentration in in-door atmospheres and converts it into standard current or voltage signal. PHG model uses dual nondispersive infrared (NDIR) carbon-dioxide sensor providing improved accuracy and sensitivity as well as low temperature and humidity dependence.
The transmitter can be equipped with local 4-digit LED display and RS232 serial interface. PHG mounting variants include free or duct installation with top or bottom mounted connector.
PHG application area includes indoor air control, ventilation, air-conditioning, mushroom control, etc.
- Low Cost
- Dual NDIR sensor built in
- Good accuracy, sensitivity and selectivity
- Low humidity and temperature dependency
- For HVAC and food processing applications
- Comeco Part No: PHG-B.03.X.F
Please note that the datasheet mentions a range of options, not all of which we stock. We may be able to bring in sensors with different options, but minimum orders and different pricing may apply. Contact us for further details.
- Power supply: 15 to 32 VDC
- Supply Voltage Variability:1 Vp-p at 50 Hz
- Current draw: ≤90 mA
- Output Signal: 4 to 20 mA
- Output update: 2 s
- Measurement Range: 0 to 3000 ppm
- Measurement Error: ±2 ppm at 10 to 50 °C
- Temperature Dependence: 10 ppm for 1 °C
- Maximum Load: 350 Ω at 24 V, 20 mA
- Warm-up time: ≤90 s at 25 °C
- Response time (0 to 80%): ≤30 s
Dispatch
In-stock orders are dispatched within 2 business days.
Shipping options
We deliver across Australia and internationally by any of the following methods:
- Australia Post Express
- Australia Post Parcel Post
- DHL
- FedEx (only international)
- Freight account. We'll email packaging dimensions when the shipment is ready to be book.
*Transit times vary depending on the shipping method and destination.
Store Pickup - Carrum Downs, Victoria, 3201
Order before 11am to collect after 2pm the same day. Mon–Fri, 9am–5pm, excludes public holidays.
RETURNS
How to return an item Contact us before sending anything back. Email info@oceancontrols.com.au or call +61 3 9708 2390. We'll confirm eligibility and guide you to the return process.
Return window 14 days from dispatch date.
Condition required Items must be unused and in original packaging, including all documentation and manuals.
Restocking fee A 20% restocking fee applies to all accepted returns. Return shipping costs are the customer's responsibility.
Non-returnable items
- Custom-made or specially imported products
- Software licences (some software have trial versions available)
- Items not in original, as-new condition
WARRANTY
How to make a warranty claim Before returning anything, please contact us. Our engineers can often resolve the issue remotely. If a return is required, our team will provide you with a warranty form to include with the goods.
What's covered Defects in materials and workmanship under normal use and correct installation.
What's not covered The warranty does not cover damage or failures caused by factors outside our control, including incorrect installation, unauthorised alterations or modifications, or any installation or use not recommended by the manufacturer.
Standard warranty All products carry a 12-month warranty from the date of purchase unless stated otherwise.
Extended warranty
- Labjack: 5 Years
- Atop: 5 Years
- MeanWell: 3 Years
- Teracom: 3 Years
- Novus: 3 Years











