Carbon Dioxide Infrared Sensor - MSH-CO2

  • Carbon Dioxide Infrared Sensor
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▪ High sensitivity to carbon dioxide
▪ Gas diffusion sampling
▪ Standard sensor size
▪ Temperature compensated detector elements
▪ Fast Response
▪ Wide operating temperature range

  • Model Number: MSH-CO2
  • Data Sheet: Date Sheet File
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Product Specification

DESCRIPTION

    Dynament infrared sensors operate by using the NDIR principle to monitor the presence of target gas. The sensor

contains a long life tungsten filament infrared light source, an optical cavity into which gas diffuses, a dual temperature

compensated pyroelectric infrared detector and an integral thermistor to monitor the internal temperature. The infrared

source should be driven externally with a constant voltage supply switched at a fixed frequency with a 50% duty cycle.

The dual pyroelectric detector produces two output signals in response to pulsed incident radiation from the source:

An active signal which decreases in the presence of target gas

A reference signal which is used to monitor the intensity of the source

 

FEATURES

High sensitivity to carbon dioxide

Gas diffusion sampling

Standard sensor size

Temperature compensated detector elements

Fast Response

Wide operating temperature range

Internal temperature signal

Low power

 

SPECIFICATION

Maximum lamp Power Requirements:

5V d.c. 60mA max. (50% duty cycle source drive)

Minimum operating voltage:

3.0V d.c. (50% duty cycle source drive)

Source drive frequency:

2.0Hz minimum, 3.0 Hz typical, 4.0 Hz maximum

Active mV pk-pk output in N2:

5.2mV typical @ 3Hz, 50% duty cycle

Reference mV pk-pk output in N2:

4.0mV typical @ 3Hz, 50% duty cycle

Sensitivity (reduction in active signal) at

20, 3Hz, 50% duty cycle:

14% typical @ 5000ppm CO2

30% typical @ 2.0% volume CO2

Measuring range:

0 -1000ppm up to 0 - 5% volume CO2

Resolution:

1% of measuring range

Warm up time:

To final zero ± 100ppm : <20s @20°C (68°F) ambient

To specification: < 30 minutes @20°C (68°F) ambient

Response Time T90:

 <30s @20(68°F) ambient

Zero Repeatability:

±50ppm @20(68°F) ambient

Span Repeatability:

±50ppm @20(68°F) ambient

Long term zero drift:

±50ppm per month @20(68°F) ambient

Operating temperature range:

-20to +50(-4°F to 122°F)

Storage temperature range:

-20to +50(-4°F to 122°F)

Humidity range:

0 to 95% RH non-condensing.

MTBF:

> 5 years

Temperature signal:

Integral thermistor for temperature monitoring

Weight:

17 grams

 

Refer to Technical Data Sheet TDS0022 General Description for further information





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