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Revision 0.07
14
2.7 Interfacing Macurco Sensors
All Macurco CO, NO2 and combustible gas sensors with current loop outputs may be used with the DVP-120.
Data sheets for the Macurco sensors listed in Table 2-8 are provided as an appendix to this manual.
Power connections to Macurco sensors used with the DVP-120 are polarity-insensitive, since a bridge rectifier
is connected to the power input terminals. All sensors used with the DVP-120 panel employ screw clamp
terminal blocks for power and signal connections.
Polarity of the current loop connections is marked on the printed circuit board of the sensor.
Description Order Part Number
Carbon Monoxide Transducer with solid-
state sensor
CM-2B
Carbon Monoxide Transducer with
Electro-chemical sensor
CM-3
Nitrogen Dioxide Transducer with a 5A
relay
ND-2
Combustible Gas Transducer GT-11A
Table 2-8 Macurco Transducers