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Co2meter RAD-0102-6 Operating Instructions Manual

Made by: Co2meter
Type: Operating Instructions
Category: Security System
Pages: 12
Size: 0.84 MB


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CO2 Monitor Operating Instructions



Model: RAD-0102-6 Remote CO2 Storage Safety System 


1. Product Overview 

Thank you for selecting the RAD-0102-6 CO2 Storage Safety 
Alarm.  This  monitor  is  designed  to  detect  Carbon  Dioxide 
levels  in  the  ambient  air  to  protect  employees  and 
customers. CO2 monitors are required in most jurisdictions by 
code.    High  concentrations  of  CO2  in  confined  spaces  are 
dangerous,  and  may  lead  to  health  problems  ranging  from 
headaches  and  fatigue  to  asphyxiation  and  death.  This 
monitor has 3 audible and visual alarm levels with relays that 
are  triggered  at  5,000  ppm  TWA,  15,000  ppm,  and  30,000 
ppm and can control a ventilation fan or signal the fire panel 
to  send  an  alarm  to  the  fire  department  or  monitoring 
company.   These  standards  meet  IFC,  NFPA,  and  NBIC 
requirements for monitoring.  
RAD-0102-6 CO2 Monitor is cost-effective and includes these features: 

1.)  Multiple RDU’s can be connected for additional alarm points. 
2.)  Large digital LCD display clearly indicates the ambient CO2 concentration, 

relative humidity, and temperature. 

3.)  3 independent relay outputs can automatically control vent fan or be wired to the fire alarm 


4.)  Audible and visual alarm indications. 
5.)  Automatic altitude compensation (can be turned on/off). 
6.)  4-20 mA output for offsite monitoring. 
7.)  100% clean look by burying all cables in the wall. 
8.)  Allows for field upgrades with strobe package at a later date. 


2. Package Content & Unit Layout   

The RAD-0102-6 package comprises the following parts: 

  SEU (Main Unit), 

  RDU (Remote Unit) 

  CAT 5 Communication Cable (1 piece) 

  Relay Cables (3 pieces) 

  Wall Plug Safety Strap (1 piece) 

  Mounting Brackets (2 pieces) 

  Screws (13 pieces), Wall Anchors (12 pieces), Cable Clips (10 pieces) 

  Power Supply (1 Piece), International Power Adaptors (3 pieces) 

  Warning Signs (6 pieces) 

  User Manual (1 piece). 



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SEU (Main Sensor Unit) 



A. CO2 Sensor 

B. LCD display 

C. Power (Green LED) 

D. AL1 (Red 1 LED) 

E. AL2 (Red 2 LED) 

F. AL3 (Red 3 LED) 

G. Fault (Yellow LED) 

H. Mode Button 

I. UP Button 

J. Down Button 

K. Enter Button 

L. Buzzer 

M. Reset Button 

N. 4-20mA Out 

O. Battery 

P. DC Power Supply 

Q. RDU Cable (RJ45) 

R. Relay 3 (AL3) 

S. Relay 2 (AL2) 

T. Relay 1 (AL1) 

U. Strobe Cable (RJ45) 

V. Panel Holder 




RDU (Remote Display Unit)   


A. Power (Green LED) 

B. AL1 (Red 1 LED) 

C. AL2 (Red 2 LED) 

D. AL3 (Red 3 LED) 

E. Fault (Yellow LED) 

F. LCD display 

G. Mode Button 

H. UP Button 

I. Down Button 

J. Enter Button 

K. Buzzer 

L. Strobe Cable (RJ45) 

M. Output Cable to RDU 

N. Input Cable from 

O. Panel Holder 


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3. LCD Display Symbol 




on ppm 
(Parts Per 

Ambient CO2 Concentration 



Alarm Icon 




Test communications between 
the SEU and RDU (see 9.1) 


CO2 5,000 

Relay 1 will trigger when CO2 
concentration exceeds 
5000ppm TWA (Time 
Weighted Average). The AL1 
(Red 1 LED) will flash but 
buzzer will not sound. (see 





Alarm Level 

Relay 2 will trigger when CO2 
concentration exceeds the 2nd 
alarm level. (Preset at 
15,000ppm). The AL2 (Red 2 
LED) will flash. The buzzer will 
sound. (see 9.3) 





Alarm Level 

Relay 3 will be triggered when 
CO2 concentration exceeds 
the 3rd alarm level. (Preset at 
30,000ppm) The AL2 (Red 2 
LED), AL3 (Red3 LED), and 
Fault LED will flash. The 
buzzer will sound. This status 
will be latched. (see 9.4) 



To calibrate the CO2 sensor 
when the accuracy deviates 
from the actual CO2 
concentration. (see 9.5) 



To recover factory default 
settings and remove any 
customized settings. (See 9.6) 



CO2 concentration is above 
5% (50,000 ppm) 


Fan Icon 

CO2 levels exceeds Alarm2, 
the fan icon will appear. If 
connected via Relay 2, this 
would turn on a ventilation fan. 



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4. SEU (Main Sensor Unit) 

The SEU (Main Sensor Unit) should be placed in a room where CO2 is likely to accumulate, a 
room where CO2 is stored, like an area with CO2 beverages. 
The large LCD displays the ambient CO2 concentration.   
The SEU has “DIAG”, “AL1”, “AL2”,”AL3”, “CO2 CALI”, “RCFS” functions: 
“DIAG” function executes communication tests between the SEU and RDU.   
“AL1” is a fixed 5000ppm TWA. 
“AL2” and “AL3” are two CO2 alarm levels. These alarm levels are adjustable. 


  AL2 has CO2 level of: 5000, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%. (AL2 default is 1.5%)   


  AL3 has CO2 levels of: 2.0%, 2.5%, 3.0%, 3.5%, 4.0%. (AL3 default is 3.0%) 

“CALI” function allows the user to perform calibration, when necessary.   
“RCFS” function allows the user to re-set the unit to the original factory settings.   
When the RAD-0102-6 detects a CO2 TWA (average in 8 hours) value that exceeds 5,000ppm, 
the AL1 (Red 1 LED) will blink and Relay 1 will be triggered.   
When the CO2 TWA value drops below 5000ppm (with 5% hysteresis), AL1 (Red1 LED) will stop 
blinking and Relay 1 will be inactive. 
When the RAD-0102-6 detects a CO2 value that exceeds the AL2 CO2 level, AL2 (Red 2 LED) 
will blink, the buzzer will sound and Relay 2 will be triggered.   
When the CO2 value drops below the AL2 CO2 level, AL2 (Red 2 LED) will stop blinking, the 
buzzer will stop and Relay 2 will be inactive. 
If the CO2 concentration continues to rise and exceeds the AL3 CO2 level, AL2 (Red 2 LED) and 
AL3 (Red 3 LED) will flash together. The tempo of the flashing and buzzer will increase. RAD-
0102-6 will latch after this event. When the CO2 value drops below the AL3 CO2 level and then 
below the AL2 CO2 level, the flashing and buzzer will stop, but the Fault LED will remain flashing. 
The RAD-0102-6 must be reset, by means of reset button of RAD-0102-6 (see item L in Section 
2 SEU layout) or power cycle the unit.   
The Power (Green LED) will light continuously when the power is normally supplied. If the device 
is powered by a battery, the Power (Green LED) will flash and battery indicator will appear and 
change with the battery voltage. 
If the communication cable between the SEU & RDU is not connect well, the communication 
cable is loose or disconnected from the (RJ45) connectors, the fault LED of SEU will blink as a 
reminder for the user to reconnect the cable. If the communication cable is inserted into the 
wrong port on RDU, after about one minute, the “Er7” will flash on the RDU LCD. Please plug 
the cables into the correct ports on RDU and the unit will work normally.           


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5. RDU (Remote Display Unit) 

The RDU displays the data from the SEU and provides visual and audible indication that the SEU 
is in alarm status.    The RDU is NOT an external/second sensor.    The RDU is connected to the 
SEU with a CAT5 cable. A 25-foot CAT5 cable is provided. Users can source additional cable 
lengths as needed. The RDU should be placed where it can be conveniently observed (eye level) 
before entering the room/space.     
The “DIAG” function can test the communication between the SEU and RDU (see 9.1). Resetting 
the RAD-0102-6 CO2 Monitor is only available from SEU. 

6. Strobes 

The RAD-0102-6 can be equipped with strobes for additional visual alarms. Using CAT5 cables, 
connect the strobes to the correct RJ45 ports on the SEU and RDU. If CO2 levels exceed AL2, 
the strobe will flash. If the CO2 level exceeds AL3, the strobe tempo increases.   
Please visit www.CO2Meter.com for strobe package. Part Number: CM-1026. 

7. Power 

The RAD-1020-6 comes pre-wired with a 12V power supply that plugs in to a wall outlet. The 
12V power supply can be removed and 24V DC can be wired directly to the device through the 
terminal block. Please use a 24V DC power converter to properly convert your AC power 

8. Installation Instructions 

Please carefully remove all items from the package and follow the Step-by-Step Installation 
1. Choose a suitable location to install the SEU. Fix the panel holder on the wall with the four 

screws. Install the SEU 18 inches from floor and close to the CO2 source.   

2. Put the SEU on the panel holder, making sure that they are connected tightly. 
3. Fix another panel holder in a suitable location outside the monitored space at eye level. Place 

the RDU onto panel holder, and stick the warning signs next to RDU.     

4. Route the 25-foot CAT5 cable between the SEU and RDU. CAT5 cable can be run through the 

wall/conduit or fixed to the wall using cable clips. Plug the CAT5 cable into the designated ports. 
Communication between the SEU and RDU is complete.       

5. The RAD-0102-6 has 3 relay outputs connected to the programmed alarm settings. All relays 

are normally open/closed dry contacts.    Any of the relays can be used to control an external 
device (fan, HVAC system, etc.) or can be wired to the fire alarm panel directly. The relays will 
trigger when the CO2 concentration exceeds the programmed alarm level.     

6. When the power has been connected, The SEU and the RDU will begin to work.   
7. Please use the “DIAG“ function to verify the communication between SEU and RDU, the five 

LED’s will blink and buzzer will sound on SEU & RDU, after that the communication is ready. 
The units will display the same information. 




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9. Advanced Management Settings 


9.1) Latch function:

 On/Off. Default is On.   

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


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 


9.2) Alarm Level Lock:


User cannot adjust the alarm levels when Locked. Default is Lock. 


1. Press Up & Enter button for 10 seconds 
2. Change to Advance Mode by press Mode, and choose Alm Mode 
3. Press Up/Down to set Alm level Lock or Unlk. 
4. Press Enter to Save. 


9.3) Barometric compensation:

 On/Off. Default is On.   

Unit automatically compensates for barometric pressure / altitude. 


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



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10. Customizing the Settings   

When power has been connected, all LEDs will flash and buzzer will beep 4 times, at   
this time, the LCD will show all icons for about 4 seconds.   
After that, the SEU and RDU will begin to monitor the CO2 concentration. 
In  order  to  the  get  timely  alarm  safety  information  and  meet  the  personal  requirements,  it  is 
advisable to set up the customizing parameter. 

Select Temperature Unit ºC/ºF:

 Press “Up” to switch between ºC and ºF 


Select Barometric hPa/inHg

: Press “Down” to switch between hPa and inHg 


10.1) Using the DIAG function: 

Will test the communication link from SEU & RDU.


1. Press Mode until the “DIAG” icon flashes 
2. Press Enter, the SEU’s five LEDs will blink and the buzzer will sound 
3. The RDU’s five LEDs will blink and buzzer will sound simultaneously 


10.2) Checking the AL1 - CO2 TWA parameter: 

Not user configurable



1. Press Mode until the “AL1” & “CO2” icon flash 
2.Press Enter, the “AL1” icon shows on LCD. The CO2 TWA is fixed at 5000ppm 
3. Press Enter again or press Mode to quit the setting 







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10.3) Setting the AL2 – 2


 CO2 Alarm Level parameter: 

User configurable



1. Press Mode until the “AL2” & “CO2” icons flash 
2. Press Enter, the “AL2” icon shows on LCD, default AL2= 1.5% 
3. Press Up/Down to go through “5000,1.0%,1.5%,2.0%,2.5%,3.0%” alarm level. 
4. Press Enter again to save the setting after selection or press Mode to quit the setting 


10.4) Setting the AL3 – 3


 CO2 Alarm Level parameter: 

User configurable



1. Press Mode until the “ AL3” “CO2”icon flashes 
2. Press Enter, the “AL3” icon shows on LCD. Default AL3=3.0% 
3. Press Up/Down to go through “2.0%,2.5%,3.0%,3.5%,4.0%” alarm level 
4. Press Enter again to save the setting after selection or press Mode to quit the setting

















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10.5) Calibration using the CO2 CALI function: 

1. You will need a gas cylinder of pure Nitrogen (0 ppm CO2).   
2. Temporarily cover the buzzer hole on the bottom left-hand corner of the SEU (Main unit) and 
bottom right-hand corner on the RDU (remote display unit) with a small piece of masking tape to 
minimize the alarm sound during calibration. 
3. If calibration is to be performed installed, first inform building occupants that you will be 
testing the CO2 alarm for several minutes. 
ote: Please pump N2 (zero CO2) into the CO2 Sensor Entry (Item A in section 2) and wait about 
3 minutes before calibration, then execute the “ZEro” calibration. 


1.  Hold the tubing from the Nitrogen (0ppm CO2) gas cylinder to the CO2 sensor opening (on 

the top left-hand corner).   

2.  Open the gas regulator. Flow rate should be between 0.15-0.50 liters per minute. 
3.  Wait until the CO2 reading on the SEU settles consistently at or near 0ppm CO2.   
4.  Press the Mode button 5 times, the “CO2” and “CALI” icon will start flashing on the SEU.   
5.  Press Enter to view the calibration settings. The SEU screen will now display a flashing 

“ZEro” and “CO2”.     

6.  Press Enter again to begin the calibration. “CALIBRATING” will begin flashing. 
7.  After approximately 3 minutes, the LCD will display either “PASS” or “FAIL”. 
8.  If  the  LCD  reads  “FAIL”,  repeat  the  steps  again.  If  it  displays  “PASS”,  press  Enter.  The 

display should now show 0ppm.   

9.  Remove the nitrogen cylinder. 
10. Reset the unit by either pressing the reset bottom (bottom right-hand corner with a round 

arrow) or power cycling the unit.   

11. If  your  unit  fails  the  “ZEro”  calibration,  please  follow  the  procedure  again  before  calling 








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10.6) Using the Recover factory setting function: 

Note: If the user has set the customer parameters or calibrates the RAD-0102-6 incorrectly, 
please use the ReFactSet (recover the factory Setting) to recover the default factory setting 


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. 


11. Safety Notice 

Warning: Your safety is very important to us. To ensure the proper and safe use of the device, 
please  read  all  warnings  and  the  entire  User  Manual  before  using  the  device.  Otherwise,  the 
protection provided by the equipment may be impaired. These warnings provide important safety 
information and should be observed at all times. 
1. Please handle the device carefully. Do not subject the product to impact or shock, as it could 

lead to sensor accuracy drift. 

2. Do not place the unit near a heat source. Heat may distort the unit. 
3. Do not touch the exposed electronic circuitry of the device under any circumstances, as 

there is danger of electric shocks. All relays are dry contact and are able to remain 
exposed without risk of electric shock. 

4. Please take care of cable connection between SEU and RDU. Make sure the cable from SEU 

Output (RDU) port is connected to the RDU INPUT (SEU/RDU) port. 

5. The dry contact relays do not provide power to external devices, like a ventilation fan. If there 

is no power supply to the fan, the relay will not work. This may result in potential danger with 
high CO2 concentration in confined space. 

6. 6 bilingual Warning Signs are included with each device 

12. Product Care 

To ensure maximum benefit from this product, please observe the follow guidelines. 
1. Repair - Do Not attempt to repair or modify the device in any way. Please contact CO2Meter 

directly if the product needs servicing, including replacement or calibration service. See 
Section 15 for technical support contact information.   

2. Cleaning - Disconnect the power before cleaning. Use a damp cloth. Do not use liquid 

cleaning agents such as benzene, thinner or aerosols, as these will damage the device. Do 
Not splash the unit with water.         

3. Maintenance – We recommend users to test the communication between the SEU and RDU 

using the ‘DIAG” function to verify the working conditions of the SEU and RDU. If the five LEDs 
blink and the buzzer of SEU and RDU sound simultaneously, the SEU and RDU are working 


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13. Specifications 

■ CO2 & Temperature specification: 

CO2 Specification


Measurement Range 

0 - 50,000ppm (5%) display   

Display Resolution 

10ppm at 0~10,000ppm;   
100ppm at 10,001~50,000ppM 


+/-200ppm or +/-10% reading 


Pressure Dependence 

Auto pressure compensation, built in barometer. (50 to 110 kPa) 

Response Time 

CO2: <2min by 90% 

CO2 AL1 (TWA )   

5000ppm fixed   

CO2 AL2   

5000, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%. Default AL2= 1.5%. 

CO2 AL3 

2.0%,2.5%,3.0%,3.5%,4.0%. Default AL3= 3.0% 

Sound Alarm 


Warm-Up Time 

<60 seconds at 22°C                                     


Temperature Specification: 

Temperature Range 

0°C to 50°C (32°F to 122°F) 

Display Resolution 

0.1°C (0.1°F) 

Display Options 



±1.5°C(±2.7°F) when CO2 level is below first alarm level 

Response Time 

20-30 minutes (case must equalize with environment) 

Operating Conditions: 


0°C to 50°C ( 32°F to 122°F) 

Humidity Range 

0 ~ 95% RH non-condensing 

Storage Conditions:


Storage Temperature


-20°C to 60 °C (-4°F to 140°F)


■ Power Supply   



9~32VDC (12~32VDC recommended), 2A. 

AC adapter 

Input: 100~240 VAC,50/60Hz, 0.6A 
Output: 12VDC, 2000mA. 



6VDC (5.4V~7.0V), 
recommended capacity is 12AH 

■ Relay output 

Relay 1 

Operates at CO2 TWA 

Relay 2   

Operates at Alarm 2 level for CO2 

Relay 3 

Operates at Alarm 3 level for CO2 

The Peak current for all relays is less than 2A@30 VDC or 250 VAC, SPDT. 

■ Weight and Dimension 



1 lb 

Dimensions (LxWxD) 

6.69 x 4.96 x 2.73 inches 



0.4 lb 

Dimensions (LxWxD) 

5.51 x 3.54 x 1.89 inches 



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14. Fault Codes &Troubleshooting Guide 

This section includes a list of Frequently Asked Questions for problems you may encounter with 
the RAD-0102-6 CO2 Monitor. 






(of the fault) 





Suggested Actions 


exceeded the 
temperature range 
0°C to 50°C (32°F to 

“Er3” flash, 
Fault LED blink   

“Er3” flash, 
Fault LED blink 

This error will disappear 
when the temperature 
returns to the range 
between 0°C and 50°C 
(32°F to 122°F) 


EEPROM System 

“Er5” flash, 
Fault LED blink 

“Er5” flash, 
Fault LED blink 

Power on again or press 
reset button, if the “Er5” 
always appear, please 
contact CO2Meter. 


Internal Data 
Transmission Error 

“Er7” flash, 
Fault LED blink, 

“Er7” flash, 
Fault LED 

Check the RJ45 plug is 
connected into the INPUT 
port of RDU, if the “Er7” 
displays on the RDU only. 
Press reset button on 
SEU or power cycle the 


15. Support & Warranty 

Contact us: We’re here to help! 

If the troubleshooting guide above doesn’t help you solving your problem or for more 
information, please contact us using the information below. 

(386) 256-4910 (M-F 9:00am–5:00pm EST)   




CO2Meter, Inc. 

131 Business Center Drive 
Ormond Beach, FL 32174 
Phone: 386-872-7665 | Fax: 866-422-2356 
Email: Sales@CO2Meter.com 


Ref. No.:062017