TROTEC BZ25 CO2 Air Quality Monitor User Manual

TROTEC BZ25 CO2 Air Quality Monitor

Notes regarding the operating manual

Symbols

Warning of electrical voltage

• This symbol indicates dangers to the life and health of persons due to electrical voltage.

Warning

• This signal word indicates a hazard with an average risk level that, if not avoided, can result in serious injury or death.

Caution

• This signal word indicates a hazard with a low-risk level which, if not avoided, can result in minor or moderate injury.

Note

• This signal word indicates important information (e.g. material damage) but does not indicate hazards.

Info

• Information marked with this symbol helps you to carry out your tasks quickly and safely.

Follow the manual

• Information marked with this symbol indicates that the operating manual must be observed.

You can download the current version of the operating manual and the EU declaration of conformity via the following link:

https://hub.trotec.com/?id=43283

Safety

Read this manual carefully before starting or using the device. Always store the manual in the immediate vicinity of the device or its site of use.

Warning

Read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electric shock, fire, and/or serious injury. Save all warnings and instructions for future reference.

• Do not use the device in potentially explosive rooms or areas and do not install it there.
• Do not use the device in an aggressive atmosphere.
• Do not immerse the device in water. Do not allow liquids to penetrate into the device.
• The device may only be used in dry surroundings and must not be used in the rain or at a relative humidity exceeding the operating conditions.
• Protect the device from permanent direct sunlight.
• Do not remove any safety signs, stickers, or labels from the device. Keep all safety signs, stickers, and labels in legible condition.
• Do not open the device.
• Observe the storage and operating conditions (see Technical data).

Intended use

Only use the device for air quality (CO2 level), indoor temperature, and humidity measurements within the measuring range specified in the technical data. Observe and comply with the technical data. To use the device for its intended use, only use accessories and spare parts which have been approved by Trotec.

Foreseeable misuse

Do not use the device in potentially explosive atmospheres, for measurements in liquids or at live parts. Trotec accepts no liability for damages resulting from improper use. In such a case, any warranty claims will be voided. Any unauthorized modifications, alterations, or structural changes to the device are forbidden.

Personnel qualifications

People who use this device must:

• have read and understood the operating manual, especially the Safety chapter.

Residual risks

Warning of electrical voltage

There is a risk of a short-circuit due to liquids penetrating the housing! Do not immerse the device and the accessories in water. Make sure that no water or other liquids can enter the housing.

Warning of electrical voltage

• Work on the electrical components must only be carried out by an authorized specialist company!

Risk of suffocation!

• Do not leave the packaging lying around. Children may use it as a dangerous toy.

Warning

• The device is not a toy and does not belong in the hands of children.
• Dangers can occur to the device when it is used by untrained people in an unprofessional or improper way! Observe the personnel qualifications!

Caution

Keep a sufficient distance from heat sources.

Note

• To prevent damage to the device, do not expose it to extreme temperatures, extreme humidity or moisture.
• Do not use abrasive cleaners or solvents to clean the device.

Information about the device

Device description

The CO₂ air quality monitor is a mains-powered measuring device with a comprehensive range of measurement options. It comes with the following functional properties and equipment features:

• NDIR measurement of carbon dioxide concentrations in the room air
• Simultaneous indication of CO₂ values, room temperature, humidity level, date, and time
• Minimum and maximum value function for CO₂, air temperature, and humidity
• Carbon dioxide alarm function with acoustic alarm for a freely definable limit value
• Additional CO₂ indicator icon (feel-good indication)
• Automatic baseline calibration

Automatic baseline calibration

The expected CO2 fresh air value is about 400 ppm (0.04 %vol) nowadays. The device assumes this value to be the lowest limit value (baseline). A special algorithm continuously monitors the lowest CO2 value detected by the sensor over a pre-configured time interval for several days. The algorithm slowly corrects any long-term drift detected compared to the expected CO2 fresh air value of 400 ppm (or 0.04 %vol). If the device is used indoors as intended, the carbon dioxide content will drop almost to the level of the outdoor air in the course of a week. By recording the values over a period of 8 days and then comparing the lowest value to the 400 pm point, the device determines whether or not it needs to adjust the zero point.= The algorithm makes use of the fact that the CO2 content in buildings and rooms regularly stabilizes at a minimum for a certain period of time when they are not occupied. In rooms that are continuously occupied or where there is a constantly increased CO2 concentration (e.g. in greenhouses), the principle of automatic balancing, therefore, does not work.

Device depiction

Technical data

190 g

Dimensions (length x width x height)| ****

90 mm x 110 mm x 98 mm

Display| LCD (monochrome)
Carbon dioxide (ppm)
Carbon dioxide sensor| NDIR sensor (non-dispersive infrared)
Measuring range| 0 to 9999 ppm
Accuracy| ±5 % or ±75 ppm
Resolution| 1 ppm
Relative humidity
Measuring range| 0.0 % RH to 99.9 % RH
Accuracy| ± 5 % RH
Resolution| 0.1 %
Air temperature
Measuring range| -5 °C to 50 °C or 23 °F to 122 °F
Accuracy| ±1 °C or ±1.8 °F
Measuring range resolution| ****

0.1 °C/°F

Ambient conditions
Operation| -5 °C to 50 °C or 23 °F to 122 °F

and 90 % RH (non-condensing)

Storage| -5 °C to 50 °C or 23 °F to 122 °F

and 90 % RH (non-condensing)

Power supply| External (power adapter)

Scope of delivery

• 1 x Measuring device BZ25
• 1 x Power adapter
• 1 x Operating manual

Transport and storage

Note

• If you store or transport the device improperly, the device may be damaged.
• Note the information regarding the transport and storage of the device.

Transport

The manufacturer packed the device to the best of his abilities to protect it against transport damage.

Storage

When the device is not being used, observe the following storage conditions:

• dry and protected from frost and heat
• protected from dust and direct sunlight
• the storage temperature complies with the values specified in the Technical data

Operation

Connecting the power adapter

Prior to use, connect the device to the mains using the supplied power adapter.

Start-up

Press the button at the rear of the device for approx. 1 second to switch the device on. The device will then start a warm-up phase lasting 120 seconds.

Setting date and time

Press and hold the Clock button for approx. 4 seconds to set the time and date. The day indication starts flashing. Press the button again to switch between year, month, day, hours, and minutes. Press one of the buttons or to increase or decrease the number flashing on the display. To exit the setting mode and to save the entered value press the ESC button once you have set the correct date and time.

Hold function

Press the button (hold) to permanently indicate or “freeze” the displayed values.

Alarm function

The device features an alarm function that indicates when a previously set CO2 threshold is exceeded.

Please proceed as follows to enable the alarm function:

1. Press the ALARM button

The alarm function is enabled and the alarm symbol appears on the display. As soon as the measured value exceeds the previously set limit value, an acoustic alarm signal will be emitted and the buttons below the display start to flash in red.

1. Press the button again to exit or disable the alarm mode.

Setting the limit value for the alarm function

Please proceed as follows to set a new limit value:

1. Press and hold the ALARM button for approx. 5 seconds.
2. The previously set limit value appears on the display and the displayed alarm symbol flashes.
3. Press or to increase or reduce the decrease of the displayed number.
4. Then you can press the ESC button to exit the mode and adopt the set value or to change the limit values for the feel-good indication .

Adjusting the limit values for the feel-good indication

Note

This setting can only be adjusted in the setting mode for the alarm threshold! After having set an alarm threshold, do not press the ESC button but rather the ALARM button again for a brief moment. The lower limit value for the feel- good indication will be displayed and the icons of the feel-good indication start to flash.

1. Press or to increase or reduce the lower limit value for the feel-good indication.
2. Press the ALARM button to switch over to set the upper limit value.
3. Press or increase or reduce the upper limit value for the feel-good indication.
4. Press the ESC button to exit the mode and to adopt the set value.

Displaying the minimum / maximum value

The device saves the highest and lowest display values. To call up these values, please proceed as follows:

1. Press the MAX MIN button.
2. MAX appears on the display and the highest measured values for carbon dioxide, temperature, and relative humidity will be displayed as well.
3. Press the button again to view the minimum values (MIN).
4. Press the ESC button to exit this mode.

Background illumination

The background illumination will be switched on in addition by pressing either ALARM, MAX MIN, or . The background illumination goes out after approx. 20 seconds of non-use. Press the ESC button to exit this mode.

Setting the °C/°F indication

• Press the °C/°F button at the rear of the device to switch between an indication in degrees Celsius and degrees Fahrenheit.

Maintenance and repair

Cleaning

• Clean the device with a soft, damp, and lint-free cloth. Make sure that no moisture enters the housing.
• Do not use any sprays, solvents, alcohol-based cleaning agents, or abrasive cleaners, but only clean water to moisten the cloth.

Repair

• Do not modify the device or install any spare parts. For repairs or device testing, contact the manufacturer.

Disposal

The icon with the crossed-out waste bin on waste electrical or electronic equipment stipulates that this equipment must not be disposed of with the household waste at the end of its life. You will find collection points for free return of wasteM electrical and electronic equipment in your vicinity. The addresses can be obtained from your municipality or local administration. You can also find out about other return options that apply to many EU countries on the website https://hub.trotec.com/?id=45090. Otherwise, please contact an official recycling center for electronic and electrical equipment authorized in your country. The separate collection of waste electrical and electronic equipment aims to enable the re-use, recycling, and other forms of recovery of waste equipment as well as to prevent negative effects for the environment and human health caused by the disposal of hazardous substances potentially contained in the equipment.

Trotec GmbH

• Grebbener Str. 7
• D-52525 Heinsberg
• +49 2452 962-400
• +49 2452 962-200
• info@trotec.com
• www.trotec.com

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