Ethernet sensor carbon dioxide (CO₂), Modbus TCP, REST, MQTT, OPC UA
Industrial carbon dioxide (CO₂) concentration measurement, stores data in internal memory or provides it over Ethernet network to higher-level applications via OPC UA/DA, MQTT, REST, Modbus TCP, etc. JavaScript support for browser data display, alarm system, W&T Cloud support. DIN rail mounting. Possibility to certify measurements for 1 year. More
Code: 57721
Industrial carbon dioxide (CO₂) concentration measurement, stores data in internal memory or provides it over Ethernet network to higher-level applications via OPC UA/DA, MQTT, REST, Modbus TCP, etc. JavaScript support for browser data display, alarm system, W&T Cloud support. DIN rail mounting. Possibility to certify measurements for 1 year. More
Code: 57721
CO₂ concentration available via Ethernet
The W&T Web-IO CO2 57721 measures carbon dioxide concentrations from 0 to 5,000 ppm. The separate probe features an adjustable LED indicator for limit values; the network module offers a web interface, history and support for OPC UA, MQTT, REST or Modbus TCP.
Do you need to select or order the W&T 57721?
Please send us the required quantity and a description of the wiring configuration. We will check availability and suitable accessories.
Usage
It is used to monitor air quality, for example in offices. CO₂ concentration trends can be analysed in a web browser or transmitted to a higher-level system, and alerts can be sent if set limits are exceeded.
Technical specifications for W&T 57721
| Sensor | Measuring air quality using CO₂ DB9 socket Cable length: 2 m, can be extended to a maximum of 20 m |
|---|---|
| Network interface | 10/100BaseT, auto-detection / Auto-MDIX RJ45 IPv6 on request |
| Galvanic isolation | Network interface section: min. 1500 V |
| Supply voltage | Power-over-Ethernet (PoE) or 12–48 V DC (±10 %) |
| Power connection | Removable screw terminal block, pitch 5.08 mm Marked ‘L+’ and ‘M’ |
| Current consumption | PoE Class 1 (0.44–3.84 W) typ. 100 mA at 24 V DC with an external power supply |
| Signalling | 1 Power LED 2× network status LEDs 4 LEDs for status and faults 3 LEDs in the sensor forming a traffic light display |
| Measuring range | 0–5000 ppm CO₂ |
| Resolution | 1 ppm CO₂ |
| Measurement error | Air quality (0–5000 ppm): max. ±50 ppm +3 % of the measured value |
| Measurement period | 4s |
| Save interval | 15 s, 30 s, 1 min, 5 min, 15 min, 60 min |
| History capacity (4 MB memory) | min. 7 weeks, max. 20 years |
| Housing and mounting | Compact plastic housing for DIN rail mounting 105 × 22 × 75 mm (length × width × height) |
| Degree of protection | IP20 |
| Weight | approx. 200 g |
| Ambient temperature | Storage: -40 to +70 °C Operating temperature: 0 to +50 °C |
| Permissible relative humidity | 0 to 90 per cent relative humidity (non-condensing) |
| Contents of the delivery | 1x Web-IO CO2 for DIN rail mounting 1x W&T sensor, 2 m (CO₂) 1× quick start guide |
CO₂ measurement and limit signalling
- The probe is connected via a 2 m cable using a DB9 connector. The connection can be extended to a maximum of 20 m.
- The maximum error in the range 0–5000 ppm is ±50 ppm + 3 per cent of the measured value. A resolution of 1 ppm must not be confused with accuracy.
- Measurements are updated every 4 seconds. The recording interval is independently adjustable, and the 4 MB memory stores a history ranging from 7 weeks to 20 years, depending on the setting.
- Up to 12 configurable alarm messages are available, along with email, SNMP and other network services. Three LEDs on the probe indicate the status according to the set limits.
Commissioning and accessories
Place the sensor in the area designated for air quality monitoring. Connect the Ethernet cable and the PoE or 12–48 V DC power supply, then set the IP address, alarm thresholds and logging interval. Ensure the operating temperature is within the specified range and that the environment is free from condensation.
Contents of the delivery
- 1x Web-IO CO2 for DIN rail mounting
- 1x W&T sensor, 2 m (CO₂)
- 1× quick start guide
Frequently Asked Questions
Is a resolution of 1 ppm also a measure of accuracy?
No. Resolution is the step size of the measured value. The maximum error is ±50 ppm + 3 per cent of the measured value within the range of 0–5000 ppm.
Can the probe be connected using a longer cable?
A 2 m cable is supplied and, according to the manufacturer, the connection can be extended to a maximum of 20 m.
Will I be able to see when the limit is exceeded directly on the probe?
Yes. The probe features three LEDs for adjustable visual indication of limit values.
Why order from FOXON?
Before placing an order, we will check the current availability of the part and confirm the estimated delivery date. We will assist you in selecting the equipment and necessary accessories based on the wiring configuration and required communication. We will confirm the warranty terms and the scope of any diagnostics or repairs for the specific quotation.
Documentation and technical consultancy
Technical data and documentation W&T 57721
Manuals, firmware and tools for this model can also be found in the Downloads tab. For service enquiries, please use sale and repair of FOXON industrial parts.
Do you need to select or order the W&T 57721?
Please send us the required quantity and a description of the wiring configuration. We will check availability and suitable accessories.
Diagrams and illustrations
Further related links
Technical specifications for W&T 57721
| Sensor | Measuring air quality using CO₂ DB9 socket Cable length: 2 m, can be extended to a maximum of 20 m |
|---|---|
| Network interface | 10/100BaseT, auto-detection / Auto-MDIX RJ45 IPv6 on request |
| Galvanic isolation | Network interface section: min. 1500 V |
| Supply voltage | Power-over-Ethernet (PoE) or 12–48 V DC (±10 %) |
| Power connection | Removable screw terminal block, pitch 5.08 mm Marked ‘L+’ and ‘M’ |
| Current consumption | PoE Class 1 (0.44–3.84 W) typ. 100 mA at 24 V DC with an external power supply |
| Signalling | 1 Power LED 2× network status LEDs 4 LEDs for status and faults 3 LEDs in the sensor forming a traffic light display |
| Measuring range | 0–5000 ppm CO₂ |
| Resolution | 1 ppm CO₂ |
| Measurement error | Air quality (0–5000 ppm): max. ±50 ppm +3 % of the measured value |
| Measurement period | 4s |
| Save interval | 15 s, 30 s, 1 min, 5 min, 15 min, 60 min |
| History capacity (4 MB memory) | min. 7 weeks, max. 20 years |
| Housing and mounting | Compact plastic housing for DIN rail mounting 105 × 22 × 75 mm (length × width × height) |
| Degree of protection | IP20 |
| Weight | approx. 200 g |
| Ambient temperature | Storage: -40 to +70 °C Operating temperature: 0 to +50 °C |
| Permissible relative humidity | 0 to 90 per cent relative humidity (non-condensing) |
| Contents of the delivery | 1x Web-IO CO2 for DIN rail mounting 1x W&T sensor, 2 m (CO₂) 1× quick start guide |
VIDEO: Easily Collect Machine Data via OPC UA & MQTT
At the beginning of 2024 we introduced a new product from the German manufacturer of industrial modules W&T to the Czech market. Check out our short videos to see how easy it is to set up and use W&T sensors and digital and analogue inputs and outputs for data acquisition using OPC UA and MQTT communications.
Highlighted items are mandatory.
96 W 24 VDC / 4 A Bicker UPS backup power supply, supercapacitor
307,34 EUR Incl. VAT
144 W 24 VDC / 6 A UPS backup power supply Bicker, LiFePO4 battery
398,09 EUR Incl. VAT
TOP 30 OPC UA and OT/IT Data converters in a Single OPC Router License
2 407,90 EUR Incl. VAT
Accessories3
96 W 24 VDC / 4 A Bicker UPS backup power supply, supercapacitor
307,34 EUR Incl. VAT
144 W 24 VDC / 6 A UPS backup power supply Bicker, LiFePO4 battery
398,09 EUR Incl. VAT
TOP 30 OPC UA and OT/IT Data converters in a Single OPC Router License
2 407,90 EUR Incl. VAT