Specifications - 3M 450 Série Mode D'emploi

Span Adjustment Cover Screw
Sensor Inlet
450 Series
Target Gas Indicator Label
3
LCD Display
450

SPECIFICATIONS

Size .6 x .7 x . in. (9. x . x 2.8 cm)
Weight . oz. (6 g)
Ingress Protection Rating Not rated
Sensor Electrochemical (replaceable)
Operating Humidity See table below
Readout Direct read LCD
Range See table below
Alarm Indicators Visual: Flashing red LED (hazard light)
Audio: 8 dBA @  foot buzzer
Tactile: Internal vibrator (optional)
Readings Real time
Alarm Settings See table below
Reading Resolution See table below
Sensor Replacement Replaceable
Intrinsic Safety CSA - Class I, Div I, Group A, B, C, D, T
Power Sanyo CR2A battery (replaceable)
Battery Life Approximately 8 months (based on 0 hour/week usuage)
Approximately 20 hours – continuous alarm mode (visual, audio, tactile)
Radio Frequency Not shielded
Protection
Zero Adjustment Cover Screw
Audio Alarm Opening (Buzzer)
Visual Alarm LED
On Button
Off Button
LEVEL
6
Operating Temperature See table below
Range
Sensor Accuracy Carbon Monoxide (CO) – Less than ± 2% of the displayed reading or  ppm,
•
(After calibration) whichever is greater
Oxygen (OX) - Less than ± 0.% vol/vol from 7% to 2% Oxygen
•
Hydrogen Sulfide (HS) - Less than ±2% of the displayed reading or 2 ppm,
•
whichever is greater
Chlorine (CL) - Less than ±2% of the displayed reading or .0 ppm,
•
whichever is greater
Ammonia (AM) – Less than ±2% of the displayed reading or  ppm,
•
whichever is greater
Sulfur Dioxide (SO) - Less than ±2% of the displayed reading or  ppm,
•
whichever is greater
Hydrogen Cyanide (CN) – Less than ±2% of the displayed reading or 2.0
•
ppm, whichever is greater
Fig. 
Nitrogen Dioxide (ND) – Less than ±2% of the displayed reading or .0 ppm,
•
whichever is greater
Nitric Oxide (NO) – Less than ±2% of the displayed reading or  ppm,
•
whichever is greater
Hydrogen (HY) - Less than ±2% of the displayed reading or 0 ppm,
•
whichever is greater
Non-contaminated An environment containing less than 0. ppm of hydrocarbons, 0. ppm of CO,
Environment 0.2 ppm of HS, 0.2 ppm of Ammonia, 0. ppm of Hydrogen and 0.2 ppm of
other gases not normally found in the air.
Certified Calibration Gas Refers to a calibration gas sold by M* or produced by an ISO 900:2000
certified calibration gas manufacturer. The certified accuracy of the calibration
gas components must be listed on the calibration gas container and traceable to
National Institute of Standards and Technology (NIST) or a national measurement
institute standard reference material.
Warranty 2 years on electronics, see table below for sensor warranty
* A gas analysis certificate of the calibration gas is available if requested.
Ensure final calibration concentration displayed on the unit matches the certified calibration gas
concentration used. Failure to do so 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.
WARNING
7