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48 Placement and calibration of sensors Inserting and removing sensors 3. Remove the black m manifold casing. Manifold Sensor housing Figure 4-1: Sensor housing and manifold 4. To insert a sensor, gently push the sensor’s pins into the socket pin of the circuit board so it aligns accordingly. It will fit securely. 5. To remove a sensor, pull the senor up horizontally and remove it from the sensor chamber. 6. When completed, replace the black manifold over the sensors and then place the cover over the sensor housing. Tighten the screws back into place. Sensor bar- Remove screw 1 & screw 2 and lift off cover. Screw 1 Air inlet cover Dial-in Impactors Temperature/ Relative Humidity sensor (Dry bulb thermometer measures ambient air temperature) Screw 2 Toxic sensor PID sensor CO2Sensor Figure 4-2: Sensors’ locations 074-300, RevE EVM Series
