Sensor Specifications; Operating Instructions; Turning Unit On And Off; Alarms - 3M 450 Série Mode D'emploi

Sensor Specifications

Display Recommended
Sensor Gas Read Range Reading Calibration Gas
Symbol by Sensor (ppm) Resolution Concentration
OX Oxygen 0 – 0% 0.% Clean Air
CO* Carbon 0 – 900  ppm  ppm
Monoxide ppm
HS Hydrogen 0 – 00  ppm 0 ppm
Sulfide ppm
CL Chlorine 0 – 90 0. ppm  ppm
ppm
AM Ammonia 0 – 200  ppm 2 ppm
ppm
SO Sulfur 0 – 90  ppm  ppm
Dioxide ppm
CN Hydrogen 0 – 90 0. ppm 0 ppm
Cyanide ppm
ND Nitrogen 0 – 90 0. ppm  ppm
Dioxide ppm
NO Nitric 0 – 200  ppm 2 ppm
Oxide ppm
HY Hydrogen 0 – 900  ppm 00 ppm
ppm
*Carbon Monoxide Detector is available in  different models with alarm set points of 2, , and 0.
Factory RH Sensor Operating
Set Alarm Level Warranty Temperature
Level (%) (years) Range
9.%/0%  - 90 2 - to 22 °F
(-20 to 0 °C)
2 ppm  – 90 2 - to 22 °F
 ppm (-20 to 0 °C)
0 ppm
0 ppm  – 90 2 -0 to 22 °F
(-0 to 0 °C)
0. ppm  – 90  - to 22 °F
(-20 to 0 °C)
2 ppm  – 90  - to 22 °F
(-20 to 0 °C)
2 ppm  – 90  - to 22 °F
(-20 to 0 °C)
 ppm  – 90  - to 86 °F
(-2 to 0 °C)
 ppm  – 90  - to 22 °F
(-20 to 0 °C)
2 ppm  - 90  - to 22 °F
(-20 to 0 °C)
00 ppm  - 90  - to 22 °F
(-20 to 0 °C)
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OPERATING INSTRUCTIONS

The following instructions are intended to serve as a guideline for the use of the M
Series. It is not to be considered all-inclusive, nor is it intended to replace the policy and procedures for each facility.
Each person using this equipment must read and understand the information in these User Instructions
before use. Use of this equipment by untrained or unqualified persons, or use that is not in accordance with
these User Instructions, may adversely affect product performance and result in sickness or death.
This instrument helps monitor for the presence and concentration level of certain specified airborne gases.
Misuse may produce an inaccurate reading which means that higher levels of the gas being monitored
may be present and could result in overexposure and cause sickness or death. For instruments with an
oxygen sensor installed, misuse may produce an inaccurate reading where lower or higher levels of oxygen
may be present and cause sickness or death. For proper use, see supervisor or User Instructions, or call
M in U.S.A., -800-2-60. In Canada, call Technical Service at -800-267-.
Use only for monitoring the gas which the sensor and instrument are designed to monitor. Failure to do
so may result in exposures to gases not detectable and cause sickness or death. For proper use, see
supervisor or User Instructions, or call M in U.S.A., -800-2-60. In Canada, call Technical Service at
-800-267-.
If you have any doubts about the applicability of the equipment to your job situation, consult an industrial
hygienist or call M at -800-2-60. In Canada, call Technical Service at -800-267-.

Turning Unit On and Off

Press the ON button to activate the detector. After turning it on, and before each use, let it warm up and
stabilize for 2- minutes. To turn the detector off, press the OFF button.
3
450

Alarms

Immediately exit any environment that causes an alarm condition on the detector. Failure to do so may
result in sickness or death.
Do not cover or obstruct display, audible alarm opening or visual alarm cover. Doing so may adversely affect
product performance and result in sickness or death.
Vibrator and LCD may not function effectively below - ˚F (–20 ˚C). Using the instrument below this
temperature may adversely affect product performance and result in sickness or death.
™
Single Gas Detector 0
WARNING
Visual Alarm LED
Power Buttons
LEVEL
LCD Display
WARNING
9
Fig. 2