Sensor T90 Ratings
Please be advised of the following T90 ratings for the BW Ultra sensors stated below:
Sensor Type T90 Ratings
LEL Sensor (1LEL75C) for Methane is < 20 sec @ 20°C
Oxygen (O
2
) Sensor: 1O2 for O
2
is typically <15 sec
Carbon Monoxide (CO) Sensor: CO 4R+ for CO is < 30 sec
Hydrogen Sulfide (H
2
S) Sensor: 1H
2
S for H
2
S is typically <30 sec
Nitric Oxide (NO) Sensor: NO 4R+ for NO is < 60 sec
Nitrogen Dioxide (NO
2
) Sensor: NO
2
4R+ for NO
2
is < 60 sec
Carbon Dioxide (CO
2
) Sensor: NDIR 4R+ for CO
2
is < 30 sec
Response Time (t90): The time for a sensor to reach 90% of its final stable reading. Typically, an
exposure of twice the t90 time is required to get a stable reading. Response times of sensors
and instruments may be different. The response time of instrument is dependent on sensor
response time and test conditions like calibration gas flow rate, temperature etc.
Specifications are valid at 20°C, 50% RH, and 1013 mBar, using Honeywell recommended
circuitry. Performance characteristics outline the performance of sensors supplied within the
first three months. Output signal can drift below the lower limit over time.
Label Information
BW™ Ultra Battery Label
cULus ATEX/UKEX IECEx JPEx
1. BW Ultra battery serial number and 2D barcode
2. Manufacturer information
3. CEC battery charging system approval marking
4. WEEE marking
5. Chinese EPUP marking
BW Ultra 46 User Manual
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