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Summary of Contents for Met One Instruments C-12
- Page 1 OPERATION MANUAL C-12 Portable Carbon Monitor C-12-9805 Rev A Met One Instruments, Inc. 1600 NW Washington Blvd. Grants Pass, OR 97526 Telephone: +1-541-471-7111 Facsimile: +1-541-471-7116 metone.com | acoem.com...
- Page 2 For more information about Acoem, please visit: acoem.com C-12 Operation Manual - © Copyright 2024 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 express written permission of Met One Instruments, Inc.
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Page 3: Table Of Contents
Return Authorization ......................9 Unpacking the C-12 ..................10 1.3.1 Shipping Damage ......................10 1.3.2 Packing Materials Replacement ..................10 About the C-12 Portable Carbon Monitor ............11 C-12 Variants ....................13 1.5.1 C-12 Base unit ......................... 13 1.5.2 C-12 CELLULAR......................13 Safety Warnings .................... - Page 4 Inlet Assembly ......................... 22 5.4.2 Antenna Assembly and Installation ................22 5.4.3 Filter Tape Installation ....................22 6. C-12 USER INTERFACE and OPERATIONS “CTRL” Toggle Switch Quick Guide ..............24 Status-LED Interface ..................25 Power-Up, Start and Stop Sampling ............... 25 6.3.1 Starting Initial Sample Operations ................25...
- Page 5 MAINTENANCE and TROUBLESHOOTING Suggested Periodic Maintenance Intervals ............36 C-12 Error and Alarm Event Descriptions ............36 Basic Problems and Solutions .................40 Filter Tape Replacement ................42 Flow System Leak Check ................42 Field Calibration Procedures ................43 7.6.1 Flow Audit and Calibration ................... 43 7.6.2...
- Page 6 Figure 2-3 Fully Engaged SIM Card ……………………………………………………………….……………………….16 Figure 5-1 EX-905 Tripod Mounting .................. 21 Figure 5-2 C-12 Filter Tape Routing .................. 23 Figure 6-1 LED and Toggle Switch Interface ..............24 Figure 6-2 C-12 Remote User Interface ................26 Figure 6-3 Main Sampling Screen Order ................
- Page 7 Span Test in Progress Screen ................45 Figure 7-8 Span Test Completed Screen ................46 Figure 8-1 C-12 Data Transfer to the Cloud ..............47 Figure 8-2 C-12 Website Data Dashboard ............... 48 Figure 8-3 Comet Station Setup ..................49 Figure 8-4 Comet Product Type Screen................
- Page 8 Toggle Control Switch Definitions ..............24 Table 6-2 Status-LED Definitions..................25 Table 6-3 Main Display Parameter Descriptions .............. 27 Table 6-4 C-12 Menu Hierarchy ..................28 Table 7-1 Periodic Maintenance Schedule ..............36 Table 7-2 Alarm/Error Code Causes and Solutions ............37 Table 7-3 Detector Alarm Causes ..................
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Page 9: Introduction
1.1 About this Manual This document is organized with the most important information grouped together for easy reference by the user. All C-12 owners and operators should read and understand the sections on assembly, deployment, setup, menu hierarchy and field calibrations. Other... -
Page 10: Unpacking The C-12
Return Authorization instructions. 1.3 Unpacking the C-12 Please refer to Section 4, Page 19 for a list of standard accessories delivered with the C-12. NOTE: Please keep all the special shipping materials (box, foam packing, etc.) used to ship the C-12. They should be re-used when the C-12 is transported (changing site locations, returning to the factory, etc.). -
Page 11: About The C-12 Portable Carbon Monitor
1.4 About the C-12 Portable Carbon Monitor The Met One Instruments, Inc. model C-12 Portable Carbon Monitor is a two-wavelength (370 nm and 880 nm) black carbon monitor. It automatically measures and records optical transmission across filter media onto which particulate matter has been deposited. The industry standard wavelength of 880 nm is used to determine the concentration of black carbon “BC”. -
Page 12: Figure 1-2 C-12 Internal View
Modem Antennas USB B Serial Connection Indicators Toggle switch Measurement Module Filter Tape Filter Tape Take-up reel Source reel Figure 1-2 C-12 Internal View Modem Antennas Inlet Tube Figure 1-3 C-12 External View Page 12 C-12-9805 Rev A... -
Page 13: Variants
100-240 V AC, 50/60 Hz input range, and a 12 V DC, 2.1 A output. C-12 units configured for solar use do not have an AC/DC power supply installed. C-12 instruments configured for solar power must use a solar power system with a regulated 12 V DC output using a DC/DC converter. -
Page 14: Specifications
100-240 V AC, 50/60 Hz input range, and a 12 V DC, 2.1 A Power Supply: 10 W Power Consumption: 14.375 lbs. (6.52 kg) Unit Weight: Specifications may be subject to change without notice. See C-12 datasheet for latest published specs. Page 14 C-12-9805 Rev A... -
Page 15: Cellular Network Connectivity
(minimum of 100 MB/month). Choose the “Dynamic IP” option. A Silicon Labs CP210x USB driver must be installed on the host computer before connecting it to the C-12 USB Type B port. Note: Before using the USB Type B port, ensure nothing is connected to the RS-232 port on the bottom panel. -
Page 16: Figure 2-1 Orienting Sim Card
7. Power off the instrument. Remove the dust cap to access the SIM card slot. Install the SIM card into the SIM card slot on the front panel of the C-12, orienting the SIM card as shown in Fig. 2-1. Press the card all the way into the slot per Fig. 2-2 (you will feel a spring engage during this step). -
Page 17: Site Selection And Positioning Criteria
3.2.2 AC Power Options (Standard Power Supply) The C-12 uses an internal AC/DC power supply which can be supplied with 100 - 240 V AC, 50 or 60 Hz input power. The sampler is rated at 10 Watts maximum continuous power with the sample pump running. -
Page 18: Dc Power Options
The C-12 is a weatherproof carbon monitor designed to be mounted on the EX-905 tripod, to a wall, or on a vertical post for outdoor deployment. It may also be installed indoors on a bench or some form of outdoor enclosure that allows the C-12 inlet to be exposed in the intended sampling environment. -
Page 19: Components (Standard And Optional Accessories)
4. C-12 Components The C-12 is supplied with the following standard accessories listed below. Optional accessories are also listed below the standard accessories. Standard Accessories TSP Inlet (9441) Inlet Tube (83799) USB Cable, A-B male (500784) Serial Cable (83245) Span Check Membrane (83011) -
Page 20: Assembly And Deployment
5. Assembly and Deployment The C-12 is designed for easy setup and deployment. This allows it to be used for either permanent long-term sampling at a fixed site or for portable audit sampling for temporary applications. The following sections describe how to assemble and mount the various components that make up the C-12 system in its standard configuration. -
Page 21: Pole Mounting
Figure 5-1 EX-905 Mounting 5.2 Pole Mounting The method and hardware for pole mounting is the same as for mounting the C-12 on the mast of the EX-905. 5.3 Benchtop Mounting The C-12 can be installed on a level bench-top or a shelf. The instrument should be placed on a rubber mat or some other form of anti-slip material on top of the mounting surface and below the instrument. -
Page 22: Assembly
Insert the inlet tube: Pull out the lanyard connected fitting from the inlet mount in the top of the C-12 and insert the inlet tube. Connect the TSP Inlet to the inlet tube: Slide the TSP inlet onto the top of the inlet tube. Be certain the TSP inlet is fully seated onto the inlet tube. -
Page 23: User Interface And Operations
6. C-12 USER INTERFACE and OPERATIONS The C-12 has a simple user interface composed of four LED lights, a toggle switch (CTRL), and a USB type B serial port (COMM). The LED lights indicate the status of the instrument. -
Page 24: Figure 6-1 Led And Toggle Switch Interface
This action can only be done when the unit is not Sampling. Tape Toggle up and hold for >two (2) seconds. When LED 2 turns ON release the Movement toggle switch. The tape move process will begin. Page 24 C-12-9805 Rev A... -
Page 25: Status-Led Interface
6.3 Power-Up, Start and Stop Sampling When 12 V DC power is applied to the unit, the C-12 will boot up and immediately begin sampling. After powering up and starting sampling, the C-12 takes 1 to 3 hours to warm up and equilibrate before optimal measurement stability is achieved. -
Page 26: Figure 6-2 C-12 Remote User Interface
Create a new C-12 black carbon product with a serial connection baud rate of 115200 within the Comet software. Refer to the Comet software manual for detailed instructions. The remote interface allows the user to perform maintenance on the unit. -
Page 27: Main Sampling Screens
6.4.1 Main Sampling Screens The C-12 main sampling/operation screens are shown in Figure 6-3. The current date and time are always fixed at the top line of the display in these screens. The up/down arrow keys can be used to scroll to additional viewable parameters. -
Page 28: Start Or Stop Sample
Menu selections and instructions are detailed in the following sections of this operating manual as assigned in the Main Menu column of Table 6-4 above. Field editing in the C-12 is slightly different from the methods used in some of the other similar Met One Instruments, Inc. products. -
Page 29: Figure 6-5 C-12 Startup Screens
Place the flashing cursor next to the STOP SAMPLE option at the top of the menu and press the ENTER key. The C-12 will ask the user to confirm if the sample should be stopped. If confirmed, the C-12 will stop running and return to the main menu. -
Page 30: Load Tape Screen
Screen 6.8 Setup Menu The C-12 setup menu contains the settings and configuration parameters used by the instrument. The factory default values will be correct for most applications but can be reviewed and altered to suit the specific needs of the local monitoring program, as needed. -
Page 31: Clock Setup Screen
Figure 6-11 The Sample Setup Menu 6.8.3 Memory Setup Screen – Clearing the Memory The MEMORY setup screen is used to clear/erase files in the C-12 memory. CAUTION: This menu function will permanently delete the selected files from the instrument memory! -
Page 32: Calibrate Menu
The CALIBRATE AUDIT series of screens is used to verify the optical measurement system of the C-12 monitor. A neutral density filter calibration tool is used in conjunction with these screens to perform the calibration audit. See Section 7.6.2 for full details on using these screens and verifying the monitor’s calibration. -
Page 33: Test Menu Screen
Figure 6-15 C-12 Sample Screen 6.10.1 Self-Test Screen The SELF TEST screen is used to activate an automatic test of most of the C-12 subsystems to verify that the instrument is in operational condition. Once the test is initiated, the instrument will test for properly loaded filter tape and test the function of all tape control hardware. -
Page 34: Tape Test Screen
BC LED. This should only be used if a detector or LED board is replaced. Select the 880 ON softkey to turn on the 880 nm LED. Figure 6-23 – LED SET POINT Screen Page 34 C-12-9805 Rev A... -
Page 35: Test Menu Screen
Figure 6-24 – LAMP TEST Screen 6.12 About Screen This screen is used to view the C-12 firmware part numbers and revision levels. The instrument’s serial number is displayed on the third line as shown in Figure 6-25. -
Page 36: Maintenance And Troubleshooting
7.2 C-12 Error and Alarm Event Descriptions The C-12 contains a system of error and alarm codes that are used to alert the operator to problems with the unit. The errors are stored in the digital alarm log with the time and type of the error. -
Page 37: Table 7-2 Alarm/Error Code Causes And Solutions
Mis-installed tape (Section 5) Clear obstructions in the ports Blocked Reference or Sample below the tape (Contact Met port Detector One Instruments service Failure department for assistance) Light leak Contact qualified service technician Hardware Failure C-12-9805 Rev A Page 37... -
Page 38: Code Description
Detector warnings will be logged but will not interrupt operation. The IR and UV detector range is 0.0 to 2500 mV. The limits are as follows: Saturation Limit = 2450 mV Detector Limit = 100 mV Zero Limit = 5 mV Page 38 C-12-9805 Rev A... -
Page 39: Table 7-3 Detector Alarm Causes
Table 7-4 Set Point Ranges Sensor Minimum Maximum Flow -3.0 LPM 11.0 LPM -21.0° C 110.0° C Temperature -21.0° C 110.0° C Temperature BT Sensor -40.0° C 60.0° C BP Sensor 304 mbar 1090.6 mbar C-12-9805 Rev A Page 39... -
Page 40: Basic Problems And Solutions
7.3 Basic Problems and Solutions The following table contains information on some of the more common C-12 problems that may be encountered, and some steps to identify and remedy the problems. Met One Instruments welcomes user suggestions for new items to include in this section of future manual revisions. - Page 41 A Calibration Audit Failure can occur if the ND filter membrane in the • 83011 span check membrane is damaged. A replacement 83011 span check membrane can be purchased from the Met One Instruments Service Department. C-12-9805 Rev A Page 41...
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Page 42: Filter Tape Replacement
Be sure to replace the tape prior to beginning the leak check. The C-12 contains an easy to maintain flow system. To perform a leak test, use the Slow- release tool, Part # 80356, and the corresponding operation guide. -
Page 43: Field Calibration Procedures
Flow calibrations require a traceable flow audit calibration device. The Met One Instruments, Inc. Swift 6.0 and similar particulate sampler flow calibrators work well. Attach the flow meter to the C-12 sample inlet. The nominal flow rate for the C-12 is 1 LPM. Flow calibration devices should be selected accordingly. -
Page 44: Figure 7-3 C-12 Flow Calibration Screens
ON. The SET POINT parameter is the target flow rate that the C-12 will attempt to maintain. The FLOW parameter is the current flow reading from the C-12 flow sensor. The instrument should automatically regulate to 1 LPM within a few moments. -
Page 45: The Calibrate Audit Menu - Performing Optical Span Tests
CAUTION: Be very careful not to move the tape as this will affect the measurement! INSERT ND FILTER ND FILTER COMPLETE IN 1.5 MINUTES... CONTINUE Figure 7-6 The Span Test Start Screen Figure 7-7 The Span Test in Progress Screen C-12-9805 Rev A Page 45... -
Page 46: Flash Firmware Upgrades
Note: The firmware update process does not clear the instrument memory. 2. A PC or laptop with a USB port must be available and the USB drivers for the C-12 installed. Install the Firmware Update Utility program onto the computer by following the prompts after following the e-mail link to the Met One FTP site. -
Page 47: Viewing And Downloading Data
Cloud Interface. See Section 8.2 on how to use Comet Software. The C-12 uses a cloud service for storing and viewing data. After the C-12 collects the data, it connects to the internet and designated secure Cloud site via its internal cell modem. Once connected it will push the data to the cloud site. -
Page 48: Cloud Data Storage
Comet automatically creates a time- stamped comma separated CSV data file when data is downloaded. The CSV file can be found in the My Documents folder. The C-12 unit itself holds 75 days of data records in case of a cloud modem failure. -
Page 49: Comet Installation
Download the Comet software onto a PC and run the Windows Installer Package. Follow the on-screen instructions until Comet is successfully installed, then run it from the Programs directory. Create a new station for the C-12 and use it to retrieve the data from the monitor. 8.2.2... -
Page 50: Figure 8-4 Comet Product Type Screen
Figure 8-4 Comet Product Type Screen Enter a Station ID, API key, and Serial Number for the C-12. Figure 8-5 Comet Cloud Information Screen Note: Customers will receive an API on the provided configuration sheet; a digital copy can be obtained from the Met One Instruments Service department. -
Page 51: Downloading Data
My Documents folder. 8.3 Downloading Data This section describes the methods used to retrieve data from the C-12 carbon monitor. The unit has a single serial data output which can be routed through the USB serial converter port. -
Page 52: Data Outputs And Data Examples
The settings file contains most of the setup menu parameters for the C-12. This file should be reviewed periodically to ensure that no settings have been incorrectly changed. It also serves as a good data validation record. An example of a C-12 settings text file is shown in Figure 8-7. -
Page 53: Accessories And Parts
9. ACCESSORIES and PARTS The following parts are available from Met One Instruments for maintenance, replacement, service, and upgrades. If unsure about a part, please contact the technical service department. Some of these parts may require technical skills or special instructions before use or installation.
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