Carbon Dioxide Archives - rapid-tech

Multiple Gas Detector | CEM GD-3803

Sam Hewa — Wed, 15 Sep 2021 04:18:52 +0000

The CEM GD-3803 is a handheld multiple gas detector capable of measuring and recording Oxygen (O2), Carbon Monoxide (CO), Carbon Dioxide (CO2), as well as air temperature and humidity. The device has a rechargeable battery and can save up to 500 data points.

CEM GD-3803 Datasheet

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Indoor Air Quality, Carbon Dioxide (CO2) Monitor | Desktop / Wall Mounted | Extech CO230

Sam Hewa — Tue, 07 Sep 2021 23:20:22 +0000

Extech CO230 provides a reliable way of determining the quality of air. It can be used in conference rooms, schools, greenhouses, factories, hotels, hospitals or wherever else air quality is a concern.

The Extech CO230 has a large-screen display that constantly calculates carbon dioxide (CO2), air temperature and air humidity levels, and displays them all simultaneously. The Extech CO230 can be propped up on a desk or mounted on a wall for constant monitoring.

With this product, you can set both high and low CO2 alarm limits. If any of these limits are exceeded, the CO230 will send both visible and audible alerts to alert you.

Among the advanced features of this monitor are Dew Point / Wet Bulb values calculations, maximum and minimum CO2 values recall function and automatic baseline calibration (ABC) for use in coastal areas with continuously elevated CO2 levels exceeding 4000ppm.

Checks for Carbon Dioxide (CO₂) concentrations
Maintenance free NDIR (non-dispersive infrared) CO₂ sensor
Automatic Baseline Calibration (ABC) with disable feature for use in areas with continuously elevated CO₂ levels (>400ppm)
Triple LCD simultaneously displays CO₂, Temperature and Humidity
Visible and Audible CO₂ warning alarm when concentration level exceeds high or low user set point
Calculates Dew Point and Wet Bulb values
Min/Max CO₂ value recall function
Calculates statistical weighted averages of TWA (8 hour Time Weighted Average) and STEL (15 minute Short Term Exposure Limit)
Alarm relay output for ventilation control
Desktop or wall mount
Complete with Universal AC adaptor and multi-plugs (US, EU, UK, AU)

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Indoor Air Quality, Carbon Dioxide (CO2) Monitor | Desktop / Wall Mounted | Tenmars TM-187A

Sam Hewa — Mon, 06 Sep 2021 06:22:31 +0000

The TM-187A monitor comes with a unique, large LED display, and can be mounted or placed on a desk, and will provide Carbon dioxide, temperature, and humidity readings in a safe and easy way.

Large LED display
Measurement CO2 and Temperature
Temperature C or F
Real time data
Data Hold function
Alarm function
Datalogging (65,000 records)
Includes manual. AC adapter, carrying case and wall mounting kit

Tenmars 187A User Manual Tenmars TM-187A Datasheet

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CEM DT-967 Desktop Indoor Air Quality CO2 Monitor

Sam Hewa — Fri, 09 Jul 2021 02:25:13 +0000

The CEM DT-967 has a dot matrix white colour LED display that shows date, time, and year. The unit also provides a recall function for CO2 maximum/minimum values.

Design is clear and simple, light in weight. It does not matter if you are working outside or indoors; you can know the quality of the surrounding air.

An easily readable color display
‘Good’ ‘Normal’ ‘Poor’ Air quality indication
Audible / Visual alarm
Display Air Temperature and Relative Humidity Readings
Real-time Monitoring of CO2 Concentration
Supplied with Factory Calibration Certificate to ensure the product meets ISO 9001 Quality standards.

A histogram shows the carbon dioxide concentration in the environment. Using this interface, users can view the trend of carbon dioxide in the current environment.

This unit can be used in hospitals, conference rooms, schools, greenhouses, factories, or anywhere else air quality is a concern.

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TENMARS ST-502 Desktop Indoor Air Quality (CO2) Monitor

Mike — Fri, 04 Sep 2020 03:53:36 +0000

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The Tenmars ST-502 Desktop Indoor Air Quality (IAQ) Monitor measures Carbon Dioxide (CO2), Relative Humidity (%RH), Temperature and Ventilation Rate in an indoor environment such as Home, Aged Care Homes, Hospitals, Offices, Classroom, Storage, Laboratories and others.

Applicable in building air conditioning system (HVAC) monitoring and Indoor air quality monitoring.

Features:

Non-Dispersive Infrared (NDIR) CO2 sensor ensures long term stability and durability
4 Measurements-CO2/CO2 Ventilation Rate/Temperature/Humidity
Large display
Easy -to-use PC software for parameter settings and analysis
Fast USB download
CO2/Temperature/Humidity high,low alarm setting
Set on the table or wall-Mounted (use 1/4”tripod nut)
Supplied with Statement of Conformity to ensure product meets ISO 9001 Quality standards

2 Years Warranty

Tenmars ST-502 User Manual

Tenmars ST-502 Datasheet

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Extech CO220 Desktop Indoor Air Quality CO2 Monitor

Mike — Thu, 03 Sep 2020 22:31:46 +0000

Extech CO220 Desktop Indoor Air Quality CO2 Monitor measures CO2 concentration, air temperature, and relative humidity. The CO200 includes a 99 Memory Datalogger for storing and retrieving readings with date and time stamping.

The audible alarms make this is an ideal instrument for indoor air quality (IAQ) diagnostics. Carbon dioxide (CO2) is a gaseous component of the earth’s atmosphere. The concentration of CO2 in natural ambient air is approximately 0.04% or 400ppm.

The Extech CO220 Desktop Indoor Air Quality CO2 Monitor calculates statistical weighted averages of TWA (8 hour Time Weighted Average) and STEL (15 minute Short Term Exposure Limit).

The CO220 has a maintenance free NDIR (non-dispersive infrared) CO₂ sensor and can manually store/recall 99 readings. Supplied with Australian AC power adaptor.

Extech CO220 Features

Measures Carbon Dioxide (CO₂), Air Temperature and Humidity, plus calculates Dew Point and Wet Bulb
Maintenance free NDIR (non-dispersive infrared) CO₂ sensor
Carbon Dioxide reading displayed in ppm with six facial icons indicating indoor quality levels
Calculates Dew Point and Wet Bulb values
Calculates statistical weighted averages of TWA (8 hour Time Weighted Average) and STEL (15 minute Short Term Exposure Limit)
Automatic Baseline Calibration function
Audible High/Low alarm
Displays Year, Month, Day, and Time
Manually store/recall 99 readings
Complete with Australian AC adaptor

Extech CO220 Secifications

Specifications	Range	Resolution
Carbon Dioxide (CO₂)	0 to 9,999ppm	1ppm
Temperature	-10 to 60°C	0.1°C
Humidity	0.1 to 99.9%RH	0.1%RH
Dew Point	-70 to 60°C	0.1°F/°C
Wet Bulb	-10 to 60°C	0.1°F/°C
Ips%	-1428 to 51 lps%*	1%
cfm/p	-30 to 1 cmf/p*	1 cfm/p
Dimensions	155 x 87 x 81mm
Weight	165g

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CEM DT-9883M Air Particle Counter + Gas Detector +CO2

Mike — Thu, 27 Feb 2020 00:18:39 +0000

The CEM DT-9883M Air Particle Counter has many functions. With it is possible to determine the number of particles in the size of 0.3, 2.5 and 10 µm. In addition to measuring the particles, the fine dust it can also measure the PM 2.5 and PM 10 mass concentration. The mass concentration of the fine dust determines the weight of the particles in one cubic metre.

In addition the CEM DT-9883M can also determine the formaldehyde content in ppm. During this HCHO measurement, the temperature, the ambient humidity and the dew point are determined and displayed by it. As a further important feature it can all store data and it is therefore possible to evaluate all measured values after a measurement.

It is the ideal instrument for environmental safety and energy saving surveys.

CEM DT-9883M Air Particle Counter + Gas Detector Features:

Measures suspended particle concentration in the air of the weight method (PM2.5/PM10)
2.8″ TFT 320×240 pixels Color LCD display
Images(JPEG) & Video(3GP)
Simultaneously measure and display 6 channel of particle sizes, measure particle size down to 0.3 μm
IR temperature measure & Laser targeting
GAS Formaldehyde (HCHO) & Carbon Dioxide (CO²) detectors
Air temperature and humidity, Dew point & Wet bulb temperature
Max, Min, DIF, AVG record, Date/time setup controls, High and low alarm
Adjustable emissivity & Trigger lock
MicroSD (MAX. use 8GB) memory card, USB interface
Auto Power Off
Selectable sample time, count data, programmable delay
Store 5000 records of date, time, counts, relative humidity, temperature, sample volumes, alarms and location label
Language selection English, Chinese, French, German, Spanish

CEM DT-9883M Features:

Features	DT-9883M
2.8″ TFT 320×240 pixels Color LCD display	*
Images(JPEG) & Video(3GP)	*
Simultaneously measure and display 6 channel of particle sizes, measure particle size down to 0.3 µm	*
The determination of suspended particle concentration in the air of the weight method (PM2.5/PM10)	*
GAS (HCHO) detectors	*
TVOC, CO2	*
Air temperature and humidity, Dewpoint & Wet bulb temperature	*
Max, Min, DIF, AVG record, Date/time setup controls, alarm	*
MicroSD (MAX. use 8GB) memory card, USB interface	*
Auto Power Off	*
Selectable sample time, count data, programmable delay	*
Store 5000 records of date, time, counts, relative humidity, temperature, sample volumes, alarms and location label	*
Language selection English, Chinese, French, German, Spanish	*

Specifications
Particle Counter		DT-9883M
Channel	0.3, 0.5, 1.0,2.5, 5.0, 10μm	*
Flow Rate	0.1ft 3 (2.83L/min) controlled by internal pump	*
Count Modes	Totalize, Concentration, Audio	*
Coincidence Loss	5%, 2,000,000 particles per ft³	*
Mass Concentration Channel	PM2.5 ：0~500ug/m³ ；PM10：0~500ug/m³	*
Air Temperature Measure
Air Temp Range	0 to 50ºC/32 to 122ºF; Basic Accuracy: ±0.5ºC/1ºF	*
Humidity Range	0 to 100%RH; Basic Accuracy: ±2.5%RH (20%~80%RH)	*
Dew Point Temp. Range	-30~100ºC/ -22~199ºF	*
GAS Detectors
HCHO (methanal) Range	0.01~5.00ppm; Basic Accuracy: ±5%F.S	*
CO₂ Range	0～9999ppm:Basic Accuracy: ±75PPM±5% of reading	*
TVOC Range	0.00～10mg/m³;Accuracy: ±5%F.S	*

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CEM DT-9881M Air Particle Counter + Gas Detector

Mike — Tue, 07 Jan 2020 09:09:16 +0000

CEM DT-9881M Air Particle Counter + Gas Detector provides fast,easy and accurate readings for particle count, It can measure Suspended Particle Concentration, GAS Formaldehyde (HCHO) & Carbon Monoxide (CO) detectection, air temperature & relative humidity &,most surface temperature measurements.

The CEM DT-9881M Air Particle Counter has many functions. With it is possible to determine the number of particles in the size of 0.3, 2.5 and 10 µm. In addition to measuring the particles, the fine dust it can also measure the PM 2.5 and PM 10 mass concentration. The mass concentration of the fine dust determines the weight of the particles in one cubic metre.

In addition the CEM DT-9881M can also determine the formaldehyde content in ppm. During this HCHO measurement, the temperature, the ambient humidity and the dew point are determined and displayed by it. As a further important feature it can all store data and it is therefore possible to evaluate all measured values after a measurement.

It is the ideal instrument for environmental safety and energy saving surveys.

CEM DT-9881M Air Particle Counter + Gas Detector Features:

Measures suspended particle concentration in the air of the weight method (PM2.5/PM10)
2.8″ TFT 320×240 pixels Color LCD display
Images(JPEG) & Video(3GP)
Simultaneously measure and display 6 channel of particle sizes, measure particle size down to 0.3 μm
IR temperature measure & Laser targeting
GAS Formaldehyde (HCHO) & Carbon Monoxide (CO) detectors
Air temperature and humidity, Dew point & Wet bulb temperature
Max, Min, DIF, AVG record, Date/time setup controls, High and low alarm
Adjustable emissivity & Trigger lock
MicroSD (MAX. use 8GB) memory card, USB interface
Auto Power Off
Selectable sample time, count data, programmable delay
Store 5000 records of date, time, counts, relative humidity, temperature, sample volumes, alarms and location label
Language selection English, Chinese, French, German, Spanish

CEM DT-9881M Air Particle Counter + Gas Detector Specifications:

Channel	0.3, 0.5, 1.0,2.5, 5.0, 10μm
Flow Rate	0.1ft 3 (2.83L/min) controlled by internal pump
Count Modes	Totalize, Concentration, Audio
Coincidence Loss	5%, 2,000,000 particles per ft³
Mass Concentration Channel	PM2.5 ：0~500ug/m³ ；PM10：0~500ug/m³
Air Temperature Measure
Air Temp Range	0 to 50ºC/32 to 122ºF;
Air Temp Range	Basic Accuracy: ±0.5ºC/1ºF
Humidity Range	0 to 100%RH;
Humidity Range	Basic Accuracy: ±2.5%RH (20%~80%RH)
Dew Point Temp. Range	-30~100ºC/ -22~199ºF
Wet Bulb Temp. Range	0~80ºC/ 32~176ºF
GAS Detectors
HCHO (methanal) Range	0.01~5.00ppm; Basic Accuracy: ±5%F.S
CO (carbon monoxide) Range	0~1000ppm; Basic Accuracy:±5%F.S

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CEM DT-9881 Air Particle Counter + Gas Detector

Mike — Fri, 15 Mar 2019 03:21:50 +0000

THE CEM DT-9881 Air Particle Counter + Gas Detector provides fast,easy and accurate readings for particle count, GAS Formaldehyde (HCHO) & Carbon Monoxide (CO) detectection, air temperature & relative humidity &,most surface temperature measurements.
It is the ideal instrument for environmental and energy saving surveys.

CEM DT-9881 Air Particle Counter + Gas Detector Features:

2.8″ TFT 320×240 pixels Color LCD display
Images(JPEG) & Video(3GP)
Simultaneously measure and display 6 channel of particle sizes, measure particle size down to 0.3 μm
IR temperature measure & Laser targeting
GAS Formaldehyde (HCHO) & Carbon Monoxide (CO) detectors
Air temperature and humidity, Dew point & Wet bulb temperature
Max, Min, DIF, AVG record, Date/time setup controls, High and low alarm
Adjustable emissivity & Trigger lock
MicroSD (MAX. use 8GB) memory card, USB interface
Auto Power Off
Selectable sample time, count data, programmable delay
Store 5000 records of date, time, counts, relative humidity, temperature, sample volumes, alarms and location label
Language selection English, Chinese, French, German, Spanish

CEM DT-9881 Air Particle Counter + Gas Detector Specifications:

Particle Counter
Channel	0.3, 0.5, 1.0, 2.5, 5.0, 10μm
Flow Rate	0.1ft3(2.83L/min) controlled by internal pump
Count Modes	Totalize, Concentration, Audio
Coincidence Loss	5%, 2000000 particles per ft3
IR Temperature Measure
IR Temp. Range	-20.0ºC to 500.0ºC Basic Accuracy: ±1.5% of reading
Optical Resolution	8:1 Distance to Spot size
Emissivity Adjustable	0.10~1.0 Adjustable
Response Time	500mS
Air Temperature Measure
Air Temp Range	0 to 50ºC; Basic Accuracy:±0.5ºC
Humidity Range	0 to 100%RH; Basic Accuracy:±2.5%RH(20%~80%RH)
Dew Point Temp. Range	-30~100ºC
Wet Bulb Temp. Range	0~80ºC
GAS Detectors
HCHO Range	0.01~5.00ppm; Basic Accuracy: ±5%± 0.01ppm
CO (carbon monoxide) Range	0~1000ppm; Basic Accuracy:±5% ± 10ppm
Other
Battery	Rechargeable battery(Could be use 4 hours)
Charging time	2 hours
Size	2407557mm
Weight	570g

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CEM DT-9880 Air Particle Counter

Mike — Wed, 06 Feb 2019 09:06:17 +0000

CEM DT-9880 Air Particle Counter Features:

Simultaneously measure and display 6 channels of particle sizes (down to 0.3 μm), Air Temperature, Humidity, Dew Point and Wet Bulb
8″ TFT Color LCD display
Built-in 320×240-pixel camera takes videos (3GP) and photo images (JPEG) and records them in internal 74MB memory
Stores 5000 records (date, time, counts, humidity, temperature, sample volumes, and location label) and 20 minutes of video
Selectable sample time, count data, and Programmable delay
Air Temperature and Humidity, Dew Point & Wet Bulb Temperature
Max, Min, DIF, AVG record, Date/time setup controls
Auto Power Off
Language selection: English, French, German, Spanish
Tripod mount for continuous recording
Mini-USB port connection
Micro SD card slot in battery compartment (memory card not included; max size 8GB)

CEM DT-9880 Air Particle Counter Specifications:

Channels	0.3,0.5,1.0,2.5,5.0,10um
Flow Rate	0.1ft³(2.83L/min)
Counting Efficiency	50% @ 0.3 µm; 100 % for particles > 0.45 µm
Coincidence Loss	5% at 2,000,000 particles per ft³
Data Storage	5000 sample records (Micro-SD card)
Count Modes	Cumulative, Differential, Concentration,

Air temperature and Relative humidity measurement

Air Temperature Range	0°C to 50°C (32°F to 122°F)
Dew-point Temperature Range	0°C to 50°C (32°F to 122°F)
Relative Humidity Range	0 to 100%RH
Air temperature Accuracy	±0.5°C (0.9°F) 10°C to 40°C
Air temperature Accuracy	±1.0°C (1.8°F) others
Dew-Point temp. Accuracy	±0.5°C(0.9°F) 10°C to 40°C
Dew-Point temp. Accuracy	±1.0°C(1.8°F) others
Relative Humidity Accuracy	±3%RH 40% to 60%
	±3.5%RH 20% to 40% and 60% to 80%
	±5%RH 0% to 20% and 80% to 100%
Operating Temperature	0°C to 50°C (32°F to122°F)
Storage Temperature	-10°C to 60°C (14°F to 140°F)
Relative Humidity	10 to 90%RH non-condensing

Power

Battery	Rechargeable battery
Battery Life	About 4 hours continuous use
Battery Charge Time	About 2 hours with AC adapter

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