Dansensor A/S COPYRIGHT © PBI-200114-D 04/2013
ISM-3 EN User Manual 29
10. Specifications
Sensor
Type Solid-state ionic conductor with stabilized zirconium oxide electrolyte
Temperature 1000K (727°C)
Warm-up time 20 min., full specification after 40 min.
Calibration interval 12 months
Reference gas Atmospheric air (20.946 % oxygen)
Sensor response time Less than 50 msec.
System response time T90 (100-1000ppm): Typically 8 seconds
T90 (1000-100ppm): Typically 15 seconds
Response time depends on the flow and the measuring gas hose
Calibration Atmospheric air 20.946 % + up to 4 optional calibration gases
Flow system
For ISM-3 without an internal pump, the measuring gas is supplied at a pressure of 2 - 10 bar. By means
of the restriction hose the flow is limited to 125 ml/min, before the gas is led through the flow sensor and
the oxygen sensor.
When ordering a ISM-3 without a build-in pump, the actual inlet pressure must be indicated so that ISM-
3 can be delivered with a restriction hose which is adapted to the actual pressure.
Fig. 5. Flow diagram of ISM-3 without pump.
If the ISM-3 is equipped with an internal pump, the gas is sucked from measure point at atmospheric
pressure. When calibrating, the gas is sucked from a gas overflow, to which approx. 0.5 l/min must be
supplied.
To Next Page
Loading...
