RespirAide R200T, Руководство по обслуживанию

Страница: 30 / 89

PART III ELECTRICAL SYSTEM OF THE UNIT
3-9
ENGLISH
3.5 ODOR SENSOR (GAS SENSOR)
The unit comes with an odor sensor. The odor sensor can sense smoke, ammonia, benzene and alcohol. In fact, the
odor sensor continuously monitors the air quality through the sensor window on the plastic control panel cover as long
as the unit is plugged in. The odor sensor is connected to the circuit board. The odor sensor will send signals to the
main circuit board through the display circuit board wire (Fig. 3.5-1).
Fig. 3.5-1 The odor sensor circuit board is connected to the back of the display circuit board. The odor sensor
continuously monitors the air quality through the sensor window and sends signals to the main circuit board
through the display circuit board wire.
High voltage
power supply
Main
circuit board
Odor sensor
sensor
circuit board
Sensor
wire connection
When the odor sensor does not work properly
The odor sensor sensitivity is adjusted by the
manufacturer. If the sensor does not work correctly, you
will need to change the sensor or the main circuit board.
The warranty time for odor sensor is 2 years.
Display
circuit board
Remote receiver
Sensor window
Remote receiver
and circuit board
Display circuit board wire
Main circuit board
datag wire
Odor sensor
Odor sensor
and circuit board
Sensor window
An important notice:
For customer convenience the sensor
working process was redesigned from the
new machines (
From ser. # R200xxE ) so
you do not need to adjust the odor sensitivity.
The sensor will automatically adjust its
sensitivity at different atmosphere.
Odor sensor and air speed
After warming up for 3 minutes, the sensor
resistance of the sensor has its initial data (
Ω
).
This resistance data will decrease as it begins
to contact the gases around it.
At Auto mode, if the data is getting down to
6.25% of the initial date, the circuit board will
control the fan to run at Low speed and the
data decreased to another 6.25% of the low
speed data the unit will start to run at medium
speed. Finally, If date decreased to a 6.25% of
the medium speed date, the fan will run at High
speed.
Specifications
Target gas: NH3, Benzene, Alcohol, Smoke
Detection Range: 10~300ppm( NH3), 10~1000ppm
(Benzene), 10~600ppm (Alcohol), 1%~10% (Smoke)
Sensing Resistance: 2~500K
Ω
Response Time: 10s (70% Response)
Resume Time: 30s (70% Response)
Heating Resistance: 31±3
Ω
Heating Voltage: 5V±0.2V
Standard Working Condition: 10
o
C~65
o
C / 95% RH