Specifications - 3M 740 Serie Instrucciones De Uso

SPECIFICATIONS

Size
Weight
Ingress Protection Rating
Sensor Pack
Operating Humidity
Readout
Range
Alarm Indicators
Alarm Readings
Alarm Settings
Reading Resolution
Sensor Replacement
Intrinsic Safety
Power
Battery Life
Radio Frequency Protection
Data logging Memory
Operating Temperature Range
PC Communication
Sensor Accuracy (After calibration)
Non-contaminated environment
Certified calibration gas
Warranty
* A gas analysis certificate of the calibration gas is available if requested.
Sensor Gas Read
Symbol by Sensor Display Range
CO Carbon 0 – 1500 ppm
Monoxide
HS Hydrogen 0 – 00 ppm
Sulfide
EX Combustible 0 – 100% LEL
Gases 0-5% v/v methane
OX Oxygen 0 – 5%
Using a certified gas for a sensor test or calibration with a concentration other than the one listed for this instrument and sensor will produce inaccurate readings. This
means that higher levels of the gas being monitored may be present and could result in overexposure and cause sickness or death. For proper use, see supervisor or
User Instructions, or call M in U.S.A., 1-800--60. In Canada, call Technical Service at 1-800-67-1.
.8 x .7 x 1. in. (1. x 6.9 x .6 cm)
10. oz. (9g)
IP65
Up to four gases detected with electrochemical (CO, HS and OX) and catalytic bead (EX) sensors
15 – 90% (non-condensing)
Direct read LCD
See table below
Visual: Red LED
Audio: 95 dBA @ 1 foot buzzer
Tactile: Internal vibrator
Real time, Peaks, TWA, STEL
See table below
See table below
Replaceable sensor pack (see MAINTENANCE section)
CSA - Class I, Div I, Group A, B, C, D, T
1 Li-ion or  AAA size alkaline batteries
Approximately 0 hours
<10% deviation of alarm level when subjected to 50MHz, 5 watt radio @  feet.
60,000 data points or 6 months of data at 1 minute intervals and 0 hours/week
See table below
IR Port – IrDA Compatible
· Carbon Monoxide (CO) – Less than ± 5% of the displayed reading or 5 ppm, whichever is greater
· Oxygen (OX) - Less than ± 0.5% vol/vol from 17% to % Oxygen
· Hydrogen Sulfide (HS) - Less than ±5% of the displayed reading or  ppm, whichever is greater
· Combustible (EX) – Less than ± % of the displayed LEL reading up to 9% LEL and less than ±5% of the displayed LEL
reading between 50% to 100% LEL
An environment containing less than 0.1 ppm of hydrocarbons, 0.5 ppm of CO, 0. ppm of H
of Hydrogen and 0. ppm of other gases not normally found in the air.
Refers to a calibration gas sold by M* or produced by an ISO 9001:000 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.
 years on sensor pack and hardware (see WARRANTY sections of User Instructions)
Factory Default
Reading Calibration Gas
Resolution Concentration*
1 ppm 5 ppm
1 ppm 10 ppm
1% LEL 0.5% v/v (10% LEL)
methane
0.1% 18%
Factory Default Factory Default
Alarm Level TWA Alarm Level
5 ppm 5 ppm
10 ppm 10 ppm
10% LEL Not Applicable
19.5% (Low) Not Applicable
.0% (High)
WARNING
6
S, 0. ppm of Ammonia, 0.5 ppm

Operating
Factory Default Temperature
STEL Alarm Level Range
00 ppm - to 1 ºF
(-0 to 50 ºC)
15 ppm -0 to 1 ºF
(-0 to 50 ºC)
Not Applicable - to 1 ºF
(-0 to 50 ºC)
Not Applicable - to 1 ºF
(-0 to 50 ºC)