CS 21 Transmitter

Low Cost Solid State Sensor

  • High sensitivity to a broad range of refrigerants
  • Long sensor life
  • Fast response
  • For areas where no ex-approval is needed
  • Affordable
  • Easy handling
  • Low follow-up costs
 Product information
technical Data
Electronic Manual

CS 21 with external sensor

Transmitter for monitoring of toxic gases and combustibles

The CS 21 transmitter uses the proven chemosorption detection principle for detection of toxic gases, vapors, and combustibles. The rapid response of the transmitter provides opportunity to take counter measures and thereby limit damages. The long life of the sensors makes the CS 21 a low-cost solution for your detection needs. A transmitter can be continuously operated for more than 5 years. The CS 21 is calibrated prior to shipment.
Wall mount installation is straightforward. The distance between transmitter and controller can be greater than 500 m. A rugged aluminum casing protects sensor and electronics from water splashes and dirt. The transmitter must not be operated in ex-areas. For measurement of combustible gases in the LEL-range the gas needs to be sampled by means of a sample draw pump. In this case the ex-protection needs to be guaranteed with suitable external components (e.g. flame-protection).
 
Detectable gases Detection principle Detection range
CH2Cl2 Chemosorption 20 to 300 ppm
CH3Cl Chemosorption 20 to 300 ppm
CH4 Chemosorption 5 to 50/100 % LEL
CH4O Chemosorption 20 to 1,000 ppm
CH4S Chemosorption 10 to 100 ppm
CHCl2F Chemosorption 30 to 3,000 ppm
CHCl2F2 Chemosorption 20 to 1,000/5,000 ppm
C2Cl3F3 Chemosorption 30 to 3,000 ppm
C2Cl4 Chemosorption 20 to 300 ppm
C2H2F4 Chemosorption 20 to 500/1,000/5,000 ppm
C2H6O Chemosorption 30 to 2,000 ppm
C2HCl3 Chemosorption 20 to 300 ppm
C3H3N Chemosorption 30 to 5,000 ppm
C3H6O Chemosorption 5 to 100 % LEL
C3H6O Chemosorption 20 to 300 ppm
C3H8 Chemosorption 5 to 50/100 % LEL
C4H4O Chemosorption 20 to 1,000 ppm
C4H10 Chemosorption 5 to 50/100 % LEL
C6H6 Chemosorption 20 to 300 ppm
C6H14 Chemosorption 20 to 500 ppm
C7H8 Chemosorption 30 to 500/1,000 ppm
C8H8 Chemosorption 20 to 500/1,000 ppm
C8H10 Chemosorption 20 to 500/5,000 ppm
C8H10 Chemosorption 5 to 50 % LEL
C9H20 Chemosorption 20 to 1,000 ppm
C9H20 Chemosorption 5 to 50 % LEL
CCl3F Chemosorption 20 to 2,000 ppm
CO Chemosorption 20 to 300/1,000 ppm
H2 Chemosorption 20 to 10,000 ppm
NH3 Chemosorption 20 to 300/1,000/3,000/10,000 ppm