PROTRONIX NL-ECO-CO2-230 Room Sensor CO2 230V User Manual

PROTRONIX NL-ECO-CO2-230 Room Sensor CO2 230V

Product Information

The NL-ECO-CO2-230 is a room sensor used for indoor air quality monitoring and effective control of ventilation (HVAC) systems. It measures the concentration of carbon dioxide (CO2) in the air and can be used in various settings such as offices, classrooms, shopping centers, homes, restaurants, fitness centers, and commercial buildings. The sensor utilizes a precise optical principle called NDIR (Non-Dispersive Infrared) for accurate CO2 measurement. It features LED indication with automatic turn off at night and has an analog voltage output of 0-10V. The sensor does not require maintenance or calibration and has a verified lifetime of over 10 years. It operates on a power supply of 230V AC and has a power consumption of 5% from the selected CO2 measuring range. The CO2 measuring range can be chosen by jumper setting, with the default range being 400-2000 ppm. The sensor also has a CO2 relay with adjustable hysteresis and a CO2 rate rise of maximum 1 min. The sensor is designed for use in a non-condensing working humidity environment with a working temperature range of 0 to +50 degrees Celsius. It has an ingress protection rating of IP20 and dimensions of 90x80x31 mm.

Product Usage Instructions

1. Ensure that the sensor is connected to a power supply of 230V AC.
2. Place the sensor in the desired location for monitoring indoor air quality.
3. Allow the sensor to start after power on. All three LEDs will shine simultaneously for up to 10 seconds until the first measured value is available.
4. The sensor will be fully operational after 1 minute since power on. The declared accuracy is reached after 4 days of continuous power supply.
5. Observe the LED indication for CO2 concentration:
   • White LED lights indicate CO2 concentration less than 600 ppm, representing excellent air quality.
   • Green LED lights indicate CO2 concentration between 600 ppm and 1200 ppm, representing an optimal balance of air quality and energy consumption for ventilation and air conditioning.
6. Monitor the analog voltage output (0-10V) to track the CO2 concentration.
7. Utilize the sensor’s CO2 relay for controlling ventilation systems based on the measured CO2 concentration. Adjust the hysteresis as needed.

For further explanations of abbreviations and technical terms, refer to the Glossary section on the manufacturer’s website. For any sensor failures or issues, refer to the user manual or contact the manufacturer’s support through their website.

Introductions

Room sensor NL-ECO-CO2-230V is used for indoor air quality monitoring and for effective control of ventilation (HVAC) systems according to actual air quality. The sensor measures concentration of carbon dioxide (CO2) in air. It can be effectively used in offices, classrooms, shopping centers, homes, restaurants, fitness centers, commercial buildings, etc.

• measures CO2
• precise optical principle NDIR
• LED indication with automatic turn off at night
• analog voltage output 0-10V
• output relay NO/C
• maintenance or calibration not required during operation
• long-term stability
• verified lifetime >10 years

Description

• The measuring of CO2 is based on the principle of infrared radiation attenuation dependence on the CO2 concentration in the air (Non Dispersive Infra Red).
• Built-in auto-calibration function ensures very good long term stability.
• The sensor has one analog output for the actual CO2 concentration.
• Ventilation and heat recovery units can be effectively controlled based on the output signal of the sensor in very efficient way.
• The trigger level of CO2 concentration output relay is set by a rotary element.
• Current air quality can be easily checked by three LED indicators with built-in automatic shut-off at night.

Explanation of abbreviations and technical terms can be found on our website in the Glossary section.Protronix s.r.o., Pardubická 177, Chrudim 537 01, Czech Republic.

Technical data

CO measuring range 1) 2

| 400 – 1000

400 – 2000

400 – 5000

|

ppm

CO2 accuracy

–     for ranges 400 – 1000 and 400 – 2000 ppm

–     for a range of 400 – 5000 ppm

|

± 40 ppm + ±4 % of reading

± 60 ppm + ±4 % of reading

CO2 relay – hysteresis| 5 % from the range

(100ppm/250ppm)

CO2 rate rise| max 1| min
CO2 step response| (90 %) 80| s
Voltage output 3)| 0 – 10| V DC
Max. switching voltage| 250/30| V AC / V DC
Max. Switching current| 5/5| An AC / A DC
Working humidity

noncondensing

| 0 – 95 %| RH
Working temperature| 0 to +50| °C
Storage temperature| -20 to +60| °C
Expected lifetime| 10| years
Ingress protection| IP20|
Dimensions| 90x80x31| mm

1. Measuring range can be chosen by jumper setting. Default

the range is 400 – 2000ppm.

2)       At 15 – 35 °C, 0-80% RH.

3. Minimum achievable output value corresponds to the minimum value of the measuring range.

Voltage output versus CO2 concentration for range 400 – 1000 ppm

Voltage output versus CO2 concentration for range 400 – 2000 ppm

Voltage output versus CO2 concentration for range 400 – 5000 ppm

CO2 sensor autocalibration function

Autocalibration compensates for long-term aging of the key components of the sensor. This function is active during permanent sensor power supply. Calibration during operation throughout the whole lifetime of the sensor is not needed.

LED indication description

White LED lights

• Less than 600 ppm CO2.
• excellent air quality, low concentrations of CO2
• maintaining this level is not cost-effective, especially during the winter

Green LED lights

• More than or equal to 600 ppm CO2, less than or equal to 1200 ppm CO2.
• optimal balance of air quality and energy consumption for ventilation and air conditioning
• maintaining the CO2 concentration in this range does not significantly reduce the comfort of the indoor environment

Yellow LED lights

• More than 1200 ppm CO2.
• higher concentration of CO2 – lower air quality, this can already cause negative effects associated with low air quality such as restlessness, weakness , fatigue, headache, dizziness etc.

Sensor start after power on

• All three LEDs are shining simultaneously in the meantime, pending the availability of the first measured value. But no longer than 10 seconds.
• The sensor is fully operational after 1 minute since power on.
• The declared accuracy is reached after 4 days of continuous power supply.

Sensor failure indication
All three LED´s lights up at the same time permanently.

Electronic board controls and terminals

Terminals

POWER

1. L| supply AC – L
2. N| supply AC – N

4. NO| output relay, normally open contact
5. COM| output relay, common contact

OUTPUT

8. GND| output – minus pole, GND
9. +| analog output 0-10 V

Jumpers J3

Measuring range setting

Factory setting

Setting the relay trigger level using rotary selector

The 0 – 100% selector setting corresponds to the value of selected CO2 measuring range – see example below.

• The relay switches on when the measured value rises above the trigger level.
• The relay switches off when the measured value falls below the trigger level minus hysteresis value (5% from measuring range).
• Minimal lag between relay state – changes is 2 minutes.

Selector value| CO 2 (1000pm)| CO 2 (2000pm)| CO 2 (5000pm)
---|---|---|---
0 %| 0| 0| 0
10 %| 100| 200| 500
20 %| 200| 400| 1000
30 %| 300| 600| 1500
40 %| 400| 800| 2000
50 %| 500| 1000| 2500
60 %| 600| 1200| 3000
70 %| 700| 1400| 3500
80 %| 800| 1600| 4000
90 %| 900| 1800| 4500
100 %| 1000| 2000| 5000

Relay switching example – selected measuring range 2000ppm, hysteresis 5% ~ 100ppm, selected switching level value 50% (50% correspond to 1000ppm CO2)

Sensor connection using the output relay

Sensor connection – direct EC motor control using signal 0-10 V

Sensor box disassembly

Push on the two locks with a flat head screwdriver to release the upper part of the box. Then, tilt it in the indicated direction (see the picture below).

Continue to move the upper part with all the electronics until it is separated from the lower part.

Dimensions

Box color

• White – RAL9016.

Way to use

• The product is intended for indoor use only. You can read the recommendations for sensor placement on our web pages.

CAUTION

• It is necessary to avoid severe mechanical shock of the sensor.

End of product life

• Discard the product in according to the electronic waste law and the EU directives

The producer reserves the right of technical changes in order to product improvements its properties and functions without previous notice.

Protronix s.r.o., Pardubická 177, Chrudim 537 01, Czech Republic. www.protronix.eu. www.careforair.eu.

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