Macurco DVP-120B User Instructions page 30

Notice that the sensor number, 01 in this example, is underlined. This indicates that the digit keys can be used to jump to a particular
channel, even if there is no sensor connected to the channel.
4.3.3.2 Sensor Type
This display example shows that the sensor on channel 01 has been configured as a Carbon Monoxide Sensor. The valid entries for
Macurco type sensors are Carbon Monoxide (CO), Nitrogen Dioxide (NO
(H S), Refrigerants (REF), Carbon Dioxide (CO
2
Setting the sensor type to 0 (zero) will cause the display to ask if the user wants to DELETE the sensor. If the answer is yes, the
configuration record for this sensor channel will be deleted and the channel will no longer be used to control the ventilation system. When
a sensor's type is changed, the alarm level, warning level, and range will be set to the default for the sensor type.
The following three parameters are not accessible until a sensor type of 1, 2 or 3 is selected.
4.3.3.3 Alarm Set Point
The default alarm levels for the sensors are:
Carbon
Description
Monoxide
Alarm Level 200ppm
Setting an alarm level of 0 (zero) will disable alarm detection for this particular sensor.
4.3.3.4 Warning Set Point
The default warning levels for the sensors are:
Carbon
Description
Monoxide
Warning Level 100ppm
Setting a warning level of 0 (zero) will disable warning detection for this particular sensor.
S e n s o r
T y p e : 1
Figure 4-28 Sensor Alarm Level
) and Oxygen (O
2
S e n s o r
A l a r m :
Figure 3-29 Sensor Alarm Level
Nitrogen Combustible
Dioxide Gas
5ppm 20% LEL
S e n s o r
W a r n i n g :
Figure 4-30 Sensor Warning Level
Nitrogen Combustible
Dioxide Gas
3ppm 15% LEL
0 1 C O
), Combustible Gas (EX), Ammonia (NH
2
).
2
0 1 C O
2 0 0 p p m
Hydrogen
Ammonia
Sulfide
75ppm 20ppm
0 1 C O
_ 5 0 p p m
Hydrogen
Ammonia
Sulfide
50ppm 14ppm
30
), Hydrogen Sulfide
3
Carbon
Refrigerants
Dioxide
300ppm 4,000ppm
Carbon
Refrigerants
Dioxide
200ppm 1,500ppm
Oxygen
19.5% v/v
Oxygen
20.0% v/v