CO2METER CM-902 Industrial O2 Detector User Manual

CO2METER CM-902 Industrial O2 Detector

Specifications

• Measurement Range: 0-23% O2
• Display Resolution: 0.1%
• Accuracy: Better than 2%FS
• Pressure Dependence: Not pressure dependent
• Response Time: Not specified
• O2 AL1: Not specified
• O2 AL2: Not specified
• O2 AL3: Not specified
• Sound Alarm: Yes
• Warm-Up Time: Not specified
• Power Input: Not specified
• Backup Battery: Included
• Relay 1: Included
• Relay 2: Included
• Relay 3: Included
• 4-20mA O2: Not specified
• Dimensions: Not specified
• Weight: Not specified
• Temperature Range: Not specified
• Humidity Range: Not specified
• Storage Temperature: Not specified

Product Usage Instructions

Installation

1. Ensure the area where the Industrial O2 Detector will be installed is suitable for its operation.
2. Follow the installation guidelines provided in the user manual to mount the detector securely.

Powering On

1. Connect the power input as per the instructions provided.
2. Turn on the device using the designated power switch.

Monitoring O2 Levels

1. The display will show the current O2 levels within the measurement range.
2. Refer to the icons and symbols section in the manual to understand any displayed alerts or alarms.

Maintenance

1. Regularly check and calibrate the detector as per the recommended schedule.
2. Keep the device clean and free from obstructions for accurate readings.

FAQs

• Q: What should I do if the alarm icon is displayed?
  A: If the alarm icon appears, ensure proper ventilation, investigate the cause, and take necessary precautions.

• Q: Is it normal for the display to show fluctuating O2 levels?
  A: Some fluctuation in readings can be normal due to environmental factors; however, if consistent inaccuracies occur, recalibration may be needed.

CM- 902
Indus trial O2 Detector

CO2Meter
105 Runway Drive Ormond Beach, FL 32174 USA
877-678-4259
Copyright © CO2Meter, Inc. All Rights Reserved. Revision 01.03

Warning!
This product should only be used as described in this manual. If the equipment is used outside of the manner specified by CO2Meter, the protection provided by the equipment may be diminished. This equipment should be installed/serviced by qualified personnel only.
Please contact Support@CO2Meter.com for more information.

Introduction to the CM-902

The CM-902 Industrial Oxygen Deficiency Safety Monitor is a (12-24) VDC powered monitor that is designed to reliably and accurately sense the O2 levels present in confined spaces, harsh environments, or industrial settings. The safety alarm utilizes zirconia sensing technology to measure the depleting oxygen levels in areas of potential risk. The monitor is designed to notify workers of potential risks of environments lacking in oxygen prior to compromising the health or wellbeing of those workers. The CM-902 is equipped with (3) safety alarms that trigger across the (0-23%) measurement range. CO2Meter, Inc. is committed to delivering quality safety solutions that allow its partners to operate without the added complexity of O2 depletion safety creating workflow distractions.

Key Features

• (3) Configurable safety alarms (Audible and Visible)
• Zirconia sensor with extended lifespan
• Rugged powder coated aluminum enclosure (IP64)
• Quick release connectors design to last in harsh environments
• Push button configuration (NO CONTROL PANEL NEEDED)
• 4-20mA output for communication with Building Maintenance Systems
• (2) Dry contact relays triggered by AL1 and AL2 (NO or NC)
• (1) Dry contact relays triggered by power loss (NO or NC)
• Back-up battery connection available
• Easy calibration function
• Temperature compensation
• Alarm latching function
• Internal heating element
• Strobe Siren accessories available: CM-1029 (Click HERE)
• Hydrophobic filters that prevent water intrusion

Display

Icons and Symbols

Specifications

O2 Specification

Measurement Range| 0-23% display
Display Resolution| 0.1%
Accuracy| Better than 2%FS
Pressure Dependence| Not pressure dependent
Response Time| O2: <2min by 90%
O2 AL1| 19.5% Default (15.5%, 16%, 16.5%, 17%, 17.5%, 18%, 18.5%,

19%, 19.5%, 20%)

O2 AL2| 16.5% Default (12.5%, 13%, 13.5%, 14%, 14.5%, 15%, 15.5%,

16%, 16.5%)

O2 AL3| Default 12.0% (Fixed)
Sound Alarm| 80db@10cm
Warm-Up Time| 600 seconds (10 minutes) for full operating temperature range
Monitor Specification
Power Input| 9~32VDC (12~24VDC recommended),2A.
Backup Battery| 6VDC (5.4V~7.0V), recommended capacity is 12AH
Relay 1| Dry contact relay controlled by AL1 (2Amp) (NO or NC)
Relay 2| Dry contact relay controlled by AL2 (2Amp) (NO or NC)
Relay 3| Dry contact relay (Triggered by power loss to monitor)
4-20mA O2| O2: Range 0-23%
Dimensions| 8.25-inch x 7.8-inch x 3-inch
Weight| 1.5lbs (Monitor only)
Operating Conditions:
Temperature| -58°F to 122°F (-50°C to 50°C)
Humidity Range| 0 ~ 95% RH non-condensing
Storage Conditions:
Storage Temperature| -4°F to 140°F (-20°C to 60 °C)

Dimensional Drawings
(Dimensions are in inches)

Installation

Choosing Mounting Location
The CM-902 is designed to withstand harsh environments that would compromise other comparable safety monitors. Varying temperature, humidity, and dust/debris levels will not negatively impact the performance of the CM-902. For optimal use, a few considerations should be reviewed while selecting a mounting location:

• Avoid a location that risks high pressure washdown directed at the monitor.
• Avoid a location that would subject the monitor to impact or continuous vibration.
• Mount the monitor 12-72 inches from the ground. (Application dependent/ask a CO2Meter special for more information)
• Avoid high temperature applications without consulting with a product specialist.
• Be sure to mount in a location where 12~24VDC is available to power the monitor.

Mounting Hole Pattern
(Dimentions are in inches)

Wiring
The CM-902 can be hardwired using (1 of 2) available accessories purchasable with the monitor. The CM-900-CON or the CM-900-CBL are available to wire and configure the monitor based on the requirements of the installation. The following diagram represents the pinout of the 16pin connector located on the bottom of the monitor. Once the cable or connector is properly wired and verified with the below diagram, remove the weather cap from device connector and mate the cable or connector. The connection can be confirmed with press fit and snap sound. The CM-902 is now ready to be powered and to begin taking measurements.

Operation

Start-up
Verify that the CM-902 is properly wired, and 12-24VDC power is being supplied to the correct pin positions in the mating connector (see page 10). Check all wiring connections before powering. After power-up, the monitor provides accurate O2 measurements after a 10-minute warm up (Sensor requires brief warm-up period).

Quick Test the System

1. Apply 100% Nitrogen to the vents on the side of the device. Check that all alarms trigger and the oxygen levels begin to drop.
2. Alm1 will trigger Relay 1.
3. Alm2 will trigger Relay 2.
4. Alm3 will alarm.
5. The device will sound and flash audible and visible alarms.
6. If a CM-1029 Strobe Siren is connected, it will sound and flash.

Allow 5 minutes for the device to come out of O2 alarm status.

Unlocking/Locking Settings

1. Press Up & Enter button for 10 seconds.
2. Press Mode until Aln is displayed.
3. Use Up/Down arrow to change lock to unlock.
4. Press Enter to save.

Configuring AL1

1. Press Mode until the “AL1” & “O2” icon flash
2. Press Enter to select. AL1 level will flash.
3. Use Up/Down arrow to select new alarm level.
4. Press Enter to confirm.

Configuring AL2

1. Press Mode until the “AL2” & “O2” icon flash
2. Press Enter to select alarm 2. AL2 level will now flash.
3. Use Up/Down arrow to select new alarm level.
4. Press Enter to confirm.

Latch ON/OFF

1. Press Up & Enter button for 10 seconds
2. Change to Advance Mode by pressing Mode, and choose Lat Mode
3. Press Up/Down to set Latch Mode On or Off.
4. Press Enter to Save

(Fault light will keep flashing if AL3 is activated, indicating unit went into alarm status.)

Calibration

1. Flow certified 21% Oxygen calibration gas into one of the 2 venting slots on the side of the aluminum enclosure. Wait 3-5 minutes before starting calibration, then execute the “SPAn” calibration. (Continue to flow calibration gas through entire process)

2. Press Mode until CALI is flashing in small print under the O2 reading.

3. Press Enter to view the calibration settings.

4. “SPAn” and “O2” will be flashing.

5. Press Enter again to begin the calibration. “CALIBRATING” will begin flashing.
   (Continue to flow calibration gas throughout entire process)

6. After approximately 3 minutes, the display either “PASS” or “FAIL”.

7. If “PASS” press enter to save.

8. If “FAIL” repeat the process.

9. If “FAIL” more than twice, contact CO2Meter technical support.

System Test

1. Press Mode until the “DIAG” icon flashes
2. Press Enter, the five LEDs will blink, and the buzzer will sound.

Factory Reset

1. Press Mode until the “ReFactSet” icon flashes.
2. Press Enter Up/Down to choose either “Yes” or “No”.
3. Press Enter again to save the setting or press Mode to quit the setting.

Maintenance

The CM-902 is a low maintenance safety monitor that requires little maintenance after initial installation. It is recommended to calibrate the internal zirconia O2 sensor annually. This calibration can be completed in the field, or the monitor can be returned to CO2Meter to perform the calibration. A calibration certificate can be provided with every calibration service. Be sure to ask your CO2Meter technician for more information.

Fault Codes

temperature returns to the range between 0°C and 50°C (32°F to 122°F).
2| Er5| “Er5” flash, Fault LED blink| Power on again or press reset button, if the “Er5” always appear, please contact CO2Meter.
3| Er7| “Er7” flash, Fault LED blink| Press reset button on SEU or power cycle the unit.

Warranty

CO2Meter warrants the products to be substantially free of defects in workmanship and materials when used for their intended purposes for a period of either one (1) year or ninety (90) days from the date of shipment of the applicable products as specified for each product on the individual product pages located at www.co2meter.com (the “Manufacturer’s Limited Warranty”). No employee or representative of CO2Meter may alter the terms of the Manufacturer’s Limited Warranty verbally or in writing.
To take advantage of the Manufacturer’s Limited Warranty, the product must be returned to us at your expense. If after examination, we determine that the product is defective, CO2Meter at its election will repair or replace the defective product. The foregoing is customer’s exclusive remedy in the event of a valid warranty claim.
Notwithstanding anything contained herein, the Manufacturer’s Limited Warranty shall not apply to:

1. Any product that has been customized, altered, or repaired by any person not authorized to do so by CO2Meter; or
2. Any product that has been subject to misuse, neglect, or accidental damage. This warranty does not apply to calibration of any product.

In the event of an alleged warranty claim, you agree to contact us to request a return authorization prior to returning any products to us. We will only honor valid warranty claims of which we have been given notice prior to the expiration of the applicable limited warranty period. You agree to comply with all commercially reasonable rules and policies governing warranty claims which we may institute from time to time. Such rules and policies may be located at www.co2meter.com/pages/faq#warranty.
If you return a product to us, and we determine in our reasonable discretion that it falls within an exception to the Manufacturer’s Limited Warranty as described herein, we will have no obligation to You other than to return the Product(s) at your sole cost and expense.
It is our customer(s) responsibility to share your application with the CO2Meter sales team so they can help identify any potential issues your application may cause with our devices. important information to share will be: expected CO2 concentration, temperature, humidity, and any other particles or gases in your application. Applications with interfering gases can damage our sensors and devices. Those applications with high humidity can damage the electronics and the CO2 sensors beyond repair.

Product Returns

If any product fails under normal use, you may return it to us, by first submitting a customer case support ticket (submission here). Policies and procedures for returns and refunds related to the same are located at www.co2meter.com/pages/faq.
All returns for refund after thirty (30) days from shipment of the applicable product will incur a 25% re-stocking fee. No product will be accepted for return or refund after 45 days from shipment.
Non-refundable clause, if a product is refunded, and your purchase included a calibration certificate charge, due to the calibration being a service, not an actual product item your refund will not include the certification charge in your refund.

Support
If the User Manual/Installation guide above does not contain the needed operation, installation or troubleshooting information, please contact CO2Meter at: Support@CO2Meter.com

Contact Us
We are here to help! For information or technical support, please contact us using the information below. For further guidelines on CO2Meter Terms & Conditions, click here.

• support@co2meter.com
• (386) 256‐4910 (Technical Support)
• (386) 872‐7665 (Sales)
• www.CO2Meter.com

CO2Meter

• 105 Runway Drive
• Ormond Beach, FL
• 32174 USA
• 877-678-4259
• M-F 8:30am-5pm EDT

CM – 9 0 2 / User Manual and Installation

References

• CO2 Meters, CO2 Sensors, CO2 Monitors | CO2Meter.com
• CO2 Meters, CO2 Sensors, CO2 Monitors | CO2Meter.com
• FAQ | CO2Meter.com
• FAQ | CO2Meter.com
• Terms & Conditions | CO2Meter.com
• Industrial Strobe Siren | CO2Meter.com

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