3M PROTEGE PLUS - Page 32

3M™ PROTÉGÉ PLUS
PORTABLE MULTI-GAS MONITOR
SPECIFICATIONS
8006569, Rev. C/June 2018
A-2
Table A-2: Sensor Specifications
Combustible Sensor (Cat Bead, standard)
Sensor Type Catalytic
Range
0 to 100% LEL
0 to 5% v/v CH
4
(methane)
Operating Temperature -4°F to 131°F (-20°C to +55°C)
Operating Humidity 0% to 95% RH, non-condensing
Response Time T90 < 17 seconds
NOTE: Please refer to the APPENDIX B. SENSOR K-FACTORS for the standard combustible sen-
sor K-Factors.
LEL - Combustible Sensor (Cat Bead, lower-power)
Sensor Type Catalytic
Range
0% to 100% LEL
0% to 5% v/v CH
4
(methane)
Operating Temperature -4°F to 131°F (-20°C to +55°C)
Operating Humidity 0% to 95% RH, non-condensing
Response Time T90 < 20 seconds
NOTE: The low-power combustible sensor is not suitable for hydrocarbons larger (greater molec-
ular mass) than pentane, as the response is weak and can be very slow. This sensor is also not suit-
able for polar molecules, such as ethers, alcohols, esters and ketones. Please refer to APPENDIX
B. SENSOR K-FACTORS for the low-power combustible sensor K-Factors.
O
2
- Oxygen Sensor
Sensor Type E-Chem
Range 0% to 30% v/v oxygen
Operating Temperature -4°F to +122°F (-20°C to +50°C)
Operating Humidity 15% to 95% RH, non-condensing
H
2
S-CO - Dual Gas Sensor
Sensor Type Dual-Gas (E-Chem)
Range
0 to 500 ppm H
2
S
0 to 1000 ppm CO
Operating Temperature -4°F to 122°F (-20°C to +50°C)
Operating Humidity 15% to 90% RH, non-condensing