Met One Instruments ES-412 User manual

ES-412-9800 Manual Rev A Page 1
Met One Instruments, Inc.
1600 NW Washington Blvd.
Grants Pass, Oregon 97526
Telephone [phone]
Facsimile 541-471-7116
ES-412 Particulate Profiler Operation Manual - © Copyright 2021 Met One Instruments, Inc. All rights reserved
worldwide. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or
translated into any other language in any form without the written permission of Met One Instruments, Inc.
ES-412
PARTICULATE PROFILER
OPERATION MANUAL
REVISION A

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Table of Contents
1INTRODUCTION..................................................................................................................5
1.1 About This Manual.................................................................................................................................5
1.2 Technical Service and Warranty .........................................................................................................5
1.3 About the ES-412 ..................................................................................................................................6
1.4 Laser Radiation Safety and Conformity..............................................................................................6
1.5 ES-412 Specifications...........................................................................................................................7
2ES-412 SETUP and STARTUP ........................................................................................8
2.1 Standard and Optional Accessories ...................................................................................................8
2.2 Mounting Options...................................................................................................................................8
2.3 Setting Up the ES-412........................................................................................................................10
2.4 Electrical Connections ........................................................................................................................11
2.5 Power-Up and Starting Operation.....................................................................................................11
3DOWNLOADING and VIEWING DATA.........................................................................12
3.1 Web Interface.......................................................................................................................................12
3.1.1 How the Cloud Works..................................................................................................................12
3.1.2 Data Retention..............................................................................................................................13
3.2 Comet Software...................................................................................................................................13
3.2.1 Comet Installation.........................................................................................................................14
3.2.2 Setting up a Cloud Station ..........................................................................................................14
4DATA PLANS AND RENEWALS...................................................................................16
5SERIAL COMMUNICATIONS.........................................................................................17
5.1 Terminal Commands Through the Serial Port.................................................................................17
5.1.1 User Communication ...................................................................................................................17
5.1.2 Computer Communication ..........................................................................................................17
5.1.3 Computer Command Format......................................................................................................17
5.1.4 Checksum Computation..............................................................................................................18
5.1.5 Serial Command List....................................................................................................................18
5.2 Serial Command Explanations ..........................................................................................................19
5.2.1 User Data Report..........................................................................................................................19
5.2.2 OI Command.................................................................................................................................19
5.2.3 SK Command................................................................................................................................19
6ES-412 MEASUREMENT METHOD ..............................................................................20
6.1 Sheath Air.............................................................................................................................................20
6.2 Detection...............................................................................................................................................20
6.3 Sizing and Counting............................................................................................................................20
6.4 Calibration.............................................................................................................................................20
6.5 K-Factor ................................................................................................................................................20
6.6 Sample RH Control for Light Scatter Mass......................................................................................21

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7MAINTENANCE and TROUBLESHOOTING...............................................................22
7.1 Basic Problem and Cause/Solution Table .......................................................................................22
7.2 Suggested Periodic Maintenance Intervals .....................................................................................23
7.3 Flow Calibration...................................................................................................................................23
7.4 Filter Change........................................................................................................................................23
7.5 TSP Inlet Cleaning...............................................................................................................................23
7.6 Factory Service Interval......................................................................................................................23
8PARTS and ACCESSORIES...........................................................................................24
8.1 Consumables, Replacement Parts, and Accessories....................................................................24

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1 INTRODUCTION
1.1 About This Manual
This document is organized with the most important information grouped together for easy reference
by the user. All ES-412 owners and operators should read and understand the sections on
installation, setup, and field calibrations. Other sections that provide in-depth information on
subjects such as theory, diagnostics, accessories, and alternate settings provide valuable
information which should be consulted as needed. An electronic version of this manual is also
available.
1.2 Technical Service and Warranty
This manual is structured by customer feedback to provide the required information for setup,
operation, testing, maintaining, and troubleshooting your ES-412 unit. Should you still require
support after consulting your printed documentation, we encourage you to contact one of our expert
Technical Service representatives during normal business hours of 7:00 a.m. to 4:00 p.m. Pacific
Time, Monday through Friday. In addition, technical information and service bulletins are often
posted on our website. Please contact us and obtain a Return Authorization (RA) number before
sending any equipment back to the factory. This allows us to track and schedule service work and
to expedite customer service.
Phone: [phone] Fax: [phone]
E-Mail: [e-mail] Web: www.metone.com
Address: Technical Services Department
Met One Instruments, Inc.
1600 NW Washington Blvd.
Grants Pass, OR 97526

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1.3 About the ES-412
The Met One Instruments, Inc. model ES-412 Particulate Profiler is a near reference air quality
sensor which automatically measures and records real-time airborne PM2.5 and PM10 particulate
concentration levels using the principle of right angle laser light scatter. Detailed descriptions of the
ES-412 measurement modes can be found in Section 6. Measurement results are sent to a
customized web page dashboard where data can be viewed and downloaded. A geographical map
is included on the dashboard.
Laser Light Scatter System
Sample air is drawn into the ES-412 detector chamber and subjected to an intense laser beam
located at right angles to the flow. Particles pass through the laser beam and scatter light that is
collected by a photodiode detector. The output of the detector is analyzed to determine the number
and size of the particles and mathematically processed to provide indicative particulate mass
measurements.
1.4 Laser Radiation Safety and Conformity
The ES-412, when properly installed and operated, is considered a Class I laser product.
Class I products are not considered to be hazardous.
This system contains a 100 mW diode laser operating at 785 nm wavelength. This is not visible to
the naked eye and can cause damage to the eye if directly exposed. A protective optical housing
fully encapsulates the laser beam and optics system within the ES-412. Do not attempt to
disassemble the optical module. Failure to comply with this instruction could cause accidental
exposure to laser radiation. The manufacturer certifies that this product operates in compliance with
following standards and regulations:
FDA / CDRH This product is tested and complies with 21 CFR, Subchapter J, of the
health and Safety Act of 1968.
US 21 CFR 1040.10.

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Always power down the system whenever service or repair work is being performed inside the
instrument enclosure. Only trained technicians should attempt to repair the ES-412. Routine
maintenance does not require removing the instrument from its weatherproof enclosure.
1.5 ES-412 Specifications
PARAMETER
SPECIFICATION
Measurement Principles:
Right angle light scatter detection, using a laser diode as light source.
Number of Mass Channels:
2 (PM2.5 and PM10)
Sample Air Flow Rate:
1.0 LPM
Sheath Air Flow Rate:
1.0 LPM
Flow Control:
Active Volumetric Flow Control
Data Storage Resolution:
0.1 µg/m3
Laser Type:
Diode Laser, 100 mW, 785 nm.
Pump Type:
Brushless Diaphragm Pump.
Power Supply:
Universal 100-240 VAC input, 50/60Hz. Optional regulated 12VDC.
Power Consumption:
1.2 amps @ 12 VDC average continuous draw with inlet heater running.
0.85 amps running with inlet heater off.
Operating Temperature:
0 to +50°C
Storage Temperature:
-20º to +60º C
Ambient Humidity Range:
0 to 95% RH, non-condensing.
Humidity Control:
Automatic 10 Watt inlet heater module controlled to sample RH, with set point.
GPS:
External GPS module included.
Network Compatibility:
LTE-M (U.S. Domestic) GSM (Internationally w/ over 550 networks)
Data Update Rate To Cloud:
Standard: USA: 15 Minute –Optional: USA 5 Minute
Standard: Global: 60 Minute –Optional: Global 15 Minute
Data Storage on Cloud:
2 Years (oldest data overwritten after that)
Serial Interface:
USB port for PC communications.
Compatible Software:
Comet™, terminal programs such as HyperTerminal®
Factory Service Interval:
24 Months typical, under continuous use in normal ambient air.
Mounting Options:
Pole or wall mount bracket standard. Optional EX-905 tripod recommended.
Unit Weight
8.5 lb
Unit Dimensions
Height: 32" Width: 4.65" Depth: 8.65"
Specifications may be subject to change without notice.

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2 ES-412 SETUP and STARTUP
The ES-412 is designed for rapid deployment and easy setup by a single person in less than 15
minutes in most applications. This section describes the basic assembly, setup, and start-up of the
instrument.
2.1 Standard and Optional Accessories
When unpacking a new ES-412, verify that the contents are undamaged. If the shipping cartons are
damaged, notify the carrier immediately. Verify that the included accessories are correct and
complete. If anything is missing, contact the technical service department at [email protected]
or [phone]. See the Accessories section at the back of this manual for more details. The
normal configuration of the ES-412 is supplied with the following standard accessories:
Weatherproof TSP inlet with debris screen.
Instruction manual.
External power supply and cable.
USB Cable.
Grounding Cable.
Pole/wall mounting bracket.
Transport case
The following optional accessories may or may not also be included, depending on the order:
EX-905 Aluminum Tripod.
External DC power cable for batteries or solar systems (source must be regulated).
Solar power kits (usually drop-shipped from the solar manufacturer). A DC/DC controller is
required to regulate incoming voltage to 12V ±10%.
2.2 Mounting Options
Custom Pole or Wall Mounting:
The ES-412 can be mounted to a pole, mast, or wall using the included mounting bracket. The
bracket must be screwed or bolted to the pole or wall with appropriate hardware. The enclosed bolts
may not be appropriate for the desired mounting. The slot on the handle of the ES-412 slips over
the tab on the mounting bracket.
Typical Mounting Bracket Pole Installation
Note: If mounting the unit to a wall, take care to ensure that there is adequate clear space around
the inlet to allow unrestricted airflow into the instrument. Wall mounting is often not considered ideal
and not recommended due to the airflow and particulate obstruction of the wall itself. Mount the
instrument with no large obstructions nearby whenever possible.

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Tripod Mounting:
The Met One EX-905 aluminum tripod is the recommended mounting for the ES-412 for most
outdoor applications. It is not included as a standard accessory to save expense for users who do
not require it. Deploy the tripod as follows:
1. Remove the three stainless steel detent pins from the tripod base by pulling the rings.
Unfold the three tripod legs and reinsert the three pins so that each pin secures a leg in
the open position. Make sure the erected tripod is rigid and stable.
2. Lift the ES-412 assembly and slide the slot on the handle of the ES-412 over the tab on
the top of the tripod. Insert the supplied ¼-20 bolt through the hole in the body of the
tripod into the hole on the bottom of the ES-412 handle. Turn the rosette handle to screw
into place. This prevents the ES-412 from falling or shifting on the tripod.
3. Site the tripod on a surface that is as level as possible. The tripod feet may be secured to
the ground or mounting surface with bolts, screws, or tent pegs if necessary. Secure the
tripod in windy conditions!
Detent Pins

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2.3 Setting Up the ES-412
Set up the ES-412 hardware items and accessories as described below:
1. Install Inlet Tube: Connect the heater power harness to the mating connector coming out
of the top of the ES-412. Slip the inlet tube and heater assembly onto the top of the ES-412.
Make sure that the inner aluminum inlet tube is seated fully into the receiver inside the top.
You may need to loosen the waterproof fitting at the top of the heater assembly in order to
seat the inlet tube correctly. Align the outer housing with the 3 pins on the base mounting
and one screw hole, twist, and secure with the 8/32 x 3/8 screw.
2. Install TSP inlet: The included weatherproof TSP inlet is simply installed directly onto the
top of the ES-412 inlet tube to keep water, insects, and debris out of the instrument. Lubricate
the o-rings if necessary. Never operate the ES-412 outdoors without the TSP inlet in place,
as the resulting water/debris damage is not covered under warranty.
3. Antenna: Rotate the antenna upwards and secure its position with the quick release pin.
4. AC Power Supply: If the ES-412 is to be operated on AC line voltage, bolt the power supply
to one of the legs of the tripod with U-bolts. Plug the power supply output cable into the DC
power input on the bottom of the ES-412. When the power supply is plugged into AC power,
the ES-412 will turn on automatically.