TX6351 • TX6352 User Manual
16 P5536.1600 rev B
P5536.1600 rev B 17
Checkpoint - Carbon Dioxide Sensors
Normal atmosphere contains carbon dioxide which will aff ect the sensor signal so
nitrogen gas must be used to accurately calibrate the zero value. Power should be
applied to the sensor and the nitrogen applied for at least 5 minutes to ensure that the
sensor has stabilised.
Checkpoint
Not suitable for use with the TX6352 4 to 20 mA two wire, line powered version of
Sentro 1.
Carbon Dioxide/Methane Gases • Infrared sensor
The sensor is highly specifi c to the selected gas and exhibits
consistent sensing accuracy with superior long-term stability.
The linear response means that it can be calibrated for low gas
concentrations and high concentrations up to 100% by volume.
TX6350
.243
.245
.242
.278.2
.278
.279
Methane
CH
4
Methane
CH
4
Methane
CH
4
Carbon
Dioxide
CO
2
Carbon
Dioxide
CO
2
Carbon
Dioxide
CO
2
Sensing element
Infrared
Sensing range
0 to
5% v/v
0 to
100% LEL
0 to
100% v/v
0 to
2% v/v
0 to
5% v/v
0 to
100% v/v
Zero drift
±0.05% v/v
per month
±1% LEL
per month
±0.5% v/v
per month
±0.05% v/v per month
±1% v/v
per month
Repeatability
±0.1% v/v
±2% LEL
±2% v/v
±0.05% v/v
±2% v/v
*Response time
t(63)
<15 secs
*Response time
t(90)
<30 secs
Operating life
<5 years
Relative humidity
15 to 90% non-condensing
Operating
temperature
-10 to +40°C
GENERAL
alarm
0.5% v/v
10% LEL
10% v/v
0.3% v/v
0.75% v/v
15% v/v
HIGH alarm
1.25% v/v
25% LEL
25% v/v
0.6% v/v
1.5% v/v
30% v/v
* Response times are tested by fl owing test gas using the calibration kit referred to in section 5.2
Maintenance.
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