CONFIGURATION 
Part. No. 2400M2501_6    Touchpoint Pro 
  68  Technical Handbook 
9.2.7  Suppression Settings 
Access Level: Engineer 
The gas concentration is set to zero when the gas concentration value received from the sensor is between the ‘Zero 
suppression Positive’ and ‘Zero suppression Negative’ values.  
Zero Suppression 
Positive 
Depends on 
sensor type 
selected 
Gas Range Min + 0.25*(Gas 
Range Max – Gas Range Min) 
Zero Suppression 
Negative 
Gas Range Min   0.25*(Gas 
Range Max   Gas Range Min) 
Note: Trend logging takes place when the values of an input channel change. The system will not log values while they 
remain within the zero suppression limits. 
Note: If a threshold alarm level is set within the zero suppression band, the alarm signal will not be generated. 
9.2.8  Threshold Alarm 1 Settings 
Access Level: Engineer 
Gas Range Min + NN*(Gas Range 
Min  - Gas Range Min) 
Gas Range Min to Gas Range Max 
Note: NN depends on sensor type selected, typically 0.20 (20%).  
9.2.9  Threshold Alarm 2 Settings 
Access Level: Engineer 
Gas Range Min + NN*(Gas Range 
Max - Gas Range Min) 
Gas Range Min to Gas Range Max 
Note: NN depends on sensor type selected, typically 0.50 (50%).