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by
Monnit ALTA
Monnit
Other Wireless Platforms
Wifi
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Wireless Range Comparison
The Leading Enterprise Internet of Things Solution
Wireless Air Quality - PM 2.5 um Meter
AIR QUALITY
General Description
The ALTA wireless PM2.5 um meter measures PM1,
PM2.5 and PM10 concentrations in the air and
transmits the measurement to iMonnit.
• Measurement range:
- PM1: 0.3 to 1.0 um
- PM2.5: 1.0 to 2.5 um
- PM10: 2.5 to 10 um
Principle of Operation
The PM2.5 meter works by turning on a small fan at
the beginning of a measurement cycle to bring in a
volume of ambient air and measuring the particulate
matter (PM) content of that sample volume. The sensor
measures PM content using a laser that scatters based
on the number and size of particles suspended in the
air. It is important to keep the inlet ports of the sensor
clear to ensure proper readings.
Example Applications
Features of Monnit ALTA Sensors
• Wireless range of 1,200+ feet through 12+ walls *
• Frequency-Hopping Spread Spectrum (FHSS)
• Improved interference immunity
• Improved power management for longer battery life **
(12+ years on AA batteries)
• Encrypt-RF® Security (Die-Hellman Key Exchange
+ AES-128 CBC for sensor data messages)
• All ALTA sensors now have up to 3200 readings:
- 10-minute heartbeats = 22 days
- 2-hour heartbeats = 266 days
• Over-the-air updates (future proof)
• Free iMonnit basic online wireless sensor monitoring
and notication system to congure sensors, view
data and set alerts via SMS text and email
Actual range may vary depending on environment.
*
Battery life is determined by sensor reporting
**
frequency and other variables. Other power options
are also available.
Wireless Range Comparison
• Building/Room Air Quality
• Pollution Sensing
• Mines and Quarries
• Cement Factories
• Construction/Demolition Sites
• Petrochemicals
• Agricultural/Waste
• Many additional applications
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4.880
2.256
LONG RANGE WIRELESS
4.134
PM 2.5 AIR QUALITY
SENSOR
1.495
www.monnit.com
© 2018 Monnit Corp.
ALTA Air Quality - PM2.5 um Meter AA | Technical Specications
Supply voltage 2.0–3.8 VDC (3.0–3.8 VDC using power supply) *
Current consumption 0.2 µA (sleep mode), 0.7 µA (RTC sleep), 570 µA (MCU idle), 2.5
mA (MCU active), 5.5 mA (radio RX mode), 22.6 mA (radio TX
mode)
Operating temperature range (commercial version) ** -18°C to 55°C (0°F to 130°F) with Alkaline Batteries
-40°C to 85°C (-40°F to 185°F) with Lithium Battery
Operating temperature range (industrial version) ** -40°C to 85°C (-40°F to +185°F) with Industrial Battery
Measurement sensitivity PM1: 0.3 to 1.0 um
PM2.5: 1.0 to 2.5 um
PM10: 2.5 to 10 um
Counting eciency 50% @ 0.3 um, 98% @ >= 0.5 um
Eective range 0 to 500 ug/m^3
Maximum range 0 to 1000 ug/m^3
Maximum consistency error +/- 10% @ 100 to 500 g/m^3
+/- 10 ug/m^3 @ 0 to 100 ug/m^3
Response time ~10 Seconds***
Active current ~180 mA @ 3.3 battery voltage, ~0.6 W overall
Operating temperature -10 to 60 C
Operating humidity 0 to 99%
Storage temperature -40 to 80 C
Mean time to failure >= 3 Years
Integrated memory Up to 3200 sensor messages
Wireless range 1,200+ ft non-line-of-sight
Wireless operation 900 MHz—Frequency-Hopping Spread Spectrum
868 MHz and 433 MHz—Frequency-Agile Wireless
®
Security Encrypt-RF
Weight 3.7 ounces
Certications 900 MHz product; FCC ID: ZTL-G2SC1 and IC: 9794A-G2SC1.
Industry
Canada
868 and 433 MHz product tested and found to comply with: EN
300 220-2 V3.1.1 (2017-02), EN 300 220-2 V3.1.1 (2017-02) and
EN 60950
(256-bit key exchange and AES-128 CTR)
Hardware cannot withstand negative voltage. Please take care when connecting a power device.
*
At temperatures above 100°C, it is possible for the board circuitry to lose programmed memory.
**
Response time may vary with stability threshold setting and PM concentration. Increasing the stability threshold will improve response time but
***
reduce stability and accuracy of readings. With higher PM concentrations the sensor will acquire stable readings more quickly.
Installation Note
Install the meter with the intake slits pointing down to prevent accumulation of dust and or moisture in the sensing element
housing. Ensure that the intake slit is open to the ambient air without any obstructions within 1 inch from the slits.
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Commercial Grade Sensors
Monnit commercial grade sensors are designed for applications in ordinary environments (normal room temperature,
humidity and atmospheric pressure). Do not use these sensors under the following conditions as these factors can
deteriorate the product characteristics and cause failures and burn-out.
• Corrosive gas or deoxidizing gas: chlorine gas, hydrogen sulde gas, ammonia gas, sulfuric acid gas, nitric oxides
gas, etc.
• Volatile or ammable gas
• Dusty conditions
• Low-pressure or high-pressure environments
• Wet or excessively humid locations
• Places with salt water, oils chemical liquids or organic solvents
• Where there are excessively strong vibrations
• Other places where similar hazardous conditions exist
Use these products within the specied temperature range. Higher temperature may cause deterioration of the
characteristics or the material quality.
For more information about our products or to place an order, please contact
our sales department at 801-561-5555.
Visit us on the web at www.monnit.com.
Monnit, iMonnit, ALTA, PinchPower, Encrypt-RF and all other trademarks are property of Monnit, Corp.
© 2019 Monnit Corp. All Rights Reserved.
Monnit Corporation
3400 South West Temple
Salt Lake City, UT 84115
801-561-5555
www.monnit.com
ADS-063 (8/19)
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