Particle Counter Archives - rapid-tech

Uni-T UT337B Laser Particle Counter | Professional Air Quality Monitoring

Sam Hewa — Fri, 29 Aug 2025 05:09:52 +0000

The Uni-T UT337B Laser Particle Counter delivers professional-grade air quality monitoring with precision engineering designed for industrial and commercial applications.

This advanced particle detection system provides real-time measurement of airborne particles across six distinct size channels, making it an essential tool for clean room validation, HVAC system testing, and environmental compliance monitoring.

Engineered with cutting-edge laser scattering technology, the UT337B accurately detects particles ranging from 0.3µm to 10µm with exceptional reliability. The device’s intelligent sampling system ensures consistent airflow measurement whilst maintaining measurement accuracy within ±5% of readings, meeting stringent international standards for particle counting applications.

The intuitive 3.5-inch LED display provides clear visibility of real-time data, displaying multiple particle size distributions simultaneously. Users can easily navigate through measurement modes, view historical data, and configure sampling parameters through the user-friendly interface. The large screen ensures readability even in challenging lighting conditions typical of industrial environments.

Dual connectivity options enhance workflow efficiency through both USB and wireless capabilities. The wireless functionality enables remote monitoring and data collection, whilst USB connectivity ensures reliable data transfer to external systems. Built-in data logging stores up to 5,000 measurement records with timestamps, supporting comprehensive documentation requirements.

Constructed for demanding professional use, the UT337B meets ISO 21501-4 and EU-GMP standards, ensuring compliance with international clean room and pharmaceutical manufacturing requirements. The robust housing withstands industrial environments whilst maintaining calibration accuracy over extended periods.

Whether monitoring clean room environments, validating HVAC filtration systems, or conducting environmental assessments, the UT337B provides the accuracy and reliability professionals demand. Its comprehensive feature set combined with user-friendly operation makes it suitable for both routine monitoring and detailed particle analysis applications.

Key Features

Six-Channel Detection – Simultaneous measurement of particles at 0.3, 0.5, 1.0, 2.5, 5.0, and 10µm sizes
3.5″ LED Display – Clear, high-visibility screen for real-time data monitoring and menu navigation
Dual Connectivity – USB and wireless options for flexible data transfer and remote monitoring
5,000 Record Storage – Internal memory with timestamp logging for comprehensive data management
ISO/EU-GMP Certified – Meets international standards for clean room and pharmaceutical applications
Real-Time Monitoring – Continuous particle detection with instant results display
Professional Accuracy – ±5% measurement precision with advanced laser scattering technology

FAQ Section

Q: What particle sizes can the UT337B detect?
A: The UT337B detects particles in six size ranges: 0.3µm, 0.5µm, 1.0µm, 2.5µm, 5.0µm, and 10µm, providing comprehensive particle size distribution analysis.

Q: Is the UT337B suitable for clean room validation?
A: Yes, the UT337B is ISO 21501-4 and EU-GMP certified, making it fully compliant for clean room classification and pharmaceutical manufacturing validation requirements.

Q: How many measurements can the device store?
A: The internal memory stores up to 5,000 measurement records with timestamps, allowing extensive data logging without external storage requirements.

Q: Can I monitor readings remotely?
A: Yes, the wireless connectivity feature enables remote monitoring and data collection, whilst USB connectivity provides reliable data transfer options.

Q: What is the measurement accuracy of the UT337B?
A: The UT337B maintains measurement accuracy within ±5% of readings, utilising advanced laser scattering technology for precise particle detection across all size channels.

The post Uni-T UT337B Laser Particle Counter | Professional Air Quality Monitoring appeared first on rapid-tech.

FLUKE 985 Particle Counter

Sam Hewa — Thu, 06 May 2021 04:47:23 +0000

Fluke 985 Particle Counter Features:

Assess air quality more easily and accurately.

Six channels and particle size range of 0.3 - 10.0 µm: Assures accurate measurements even for critical locations requiring ISO Class 5 – 9 certification
Ultra-lightweight and ergonomic design: Promises easy single-hand operation in tight or awkward spaces with less operator fatigue
Long battery life: Ten hours of standard-use battery life to last a full work day
Large 3.5 QVGC Color display: Easy navigation and viewing with the intuitive icons and large font options
10,000 record storage: Quick access to historical data
On-screen data presentation: Data can be viewed in a traditional tabular or trend graph view at the user’s preference
Personalized setting and configurations: Customizable settings for the display, sample methods, and alarm settings for sample count
Data export options: Download data to a PC using a USB memory stick, USB cable or Ethernet connection. No special software is required to download or view data
Option password control: Confirms security when required
USB/Ethernet charge cradle: Assures device is always ready to go when needed

Fluke 985 Datasheet

The post FLUKE 985 Particle Counter appeared first on rapid-tech.

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	*

The post CEM DT-9883M Air Particle Counter + Gas Detector +CO2 appeared first on rapid-tech.

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

The post CEM DT-9881M Air Particle Counter + Gas Detector appeared first on rapid-tech.

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

The post CEM DT-9881 Air Particle Counter + Gas Detector appeared first on rapid-tech.

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

The post CEM DT-9880 Air Particle Counter appeared first on rapid-tech.

Extech VPC300 Video Particle Counter with built-in Camera

Mike — Thu, 16 Jun 2016 07:20:01 +0000

Using the Extech VPC300 – Particle Counter Considerations

Particle pollution is a mixture of various components including smoke, dust, chemicals, mold, and gases. Particle concentrations can affect our health and comfort levels. Evaluating the quality of the air by determining the concentration and size of these particles can help to determine if a problem exists. Locating the source of these various particles can help to determine effective methods of reducing these and improving the Indoor Air Quality (IAQ).

One way to determine the source of air particulates in a room is to test the air outside of the room under investigation. Determine the concentration and size of particulates at the air intake to that room. Purge or Zero the particle counter and then measure the concentration and size of particles in multiple areas of the room to be tested, to determine the effectiveness of the incoming air filtration. The air temperature, relative humidity, and CO2 levels are also an important consideration for IAQ as high humidity and lower temperatures can bring about mold creation.

If a room is classified as an ISO clean room or clean zone, the counts of particle sizes for that class cannot be exceeded when tested. Refer to the ISO Clean Room Class chart (ISO 14644‐1:1999) for values.

The VPC300 is equipped with a still/video camera to directly see the areas under test. Data, images, and video can be stored on up to an 8GB micro‐SD card (not included) or in the meter’s internal 74MB memory.

The life of the meter can be maximized by testing only when necessary and securely storing the instrument when it is not in use. Continuous use is not recommended and can shorten the life of the instrument especially in dusty environments. Setting up a common sense maintenance schedule and testing to the schedule will go a long way in lengthening the life of the instrument sensor.

Extech VPC300 Particle Counter

Channels Six channels: 0.3, 0.5, 1.0, 2.5, 5.0, 10μm

Flow Rate 0.1ft3/min (2.83L/min)

Counting Efficiency 50% at 0.3μm; 100% for particles > 0.45μm Coincidence Loss 5% at 2,000,000 particles per ft3

Particle Count Modes Cumulative, Differential, and Concentration modes

Air Temperature and Relative Humidity Measurements

Air Temperature Range 32° to 122°F (0 to 50°C)

Dew Point/Wet Bulb Temperature Range 32° to 122°F (0° to 50o\°C)

Relative Humidity Range 0 to 100%RH

Air Temperature Accuracy

±0.9°F (0.5°C) 50° to 104°F (10°C to 40°C)

±1.8oF (1.0oC) all other ranges

Dew Point/Wet Bulb Temperature Accuracy

±0.9°F (0.5°C) 50 to 104°F (10°C to 40°C)

1.8oF (1.0°C) all other ranges

Relative Humidity Accuracy

±3%RH from 40 to 60%RH

±3.5%RH from 20 to 40%RH and from 60 to 80%RH

±5.0%RH from 0 to 20%RH and from 80 to 100%RH

Extech VPC300 General Specifications

Display 2.8” 320 x 240 pixel TFT Color LCD with backlight

Low battery indication Battery symbol appears on the LCD

Micro‐SD Card Slot Accommodates up an 8GB card

Meter internal memory 5000 sample records; 74MB

Power supply Rechargeable 7.4V Lithium‐ion polymer battery

Battery life Approx. 4 hours of continuous use

Battery charge time 2 hours approx. with AC adaptor/charger

Operating Temperature 32° to 122°F (0 to 50°C)

Operating/Storage Humidity 10 to 90% RH non‐condensing

Storage Temperature 14 to 140°F (‐10 to 60°C)

Dimensions 9.4 x 3.0 x 2.2” (240 x 75 x 57mm)

Weight 1.26 lbs. (570g)

The post Extech VPC300 Video Particle Counter with built-in Camera appeared first on rapid-tech.