Sensaphone 2800 - Manual (Page 29)

Chapter 2: Installation
27
1. Disable the Zone’s alarm.
2. Wire up the sensor.
3. Configure the Zone.
4. Enable the Zone.
NOTE: If a false alarm occurs while wiring a sen-
sor, you can quickly acknowledge it by pressing
the [ALARM/CANCEL] key. See Chapter Five for
more information on User Acknowledgment Codes.
Temperature: The unit will accept 2.8K or 10K thermistors.
These should be wired to a Zone terminal and the adjacent ground
terminal. For recommended thermistors check the accessory list or
thermistor data in the appendices. Thermistor temperature range:
2.8K: -109°F to 115°F (-85°C to 57°C)
10K: -87ºF to 168ºF (-66ºC to 76ºC)
Dry Contacts: Only contacts which have no voltage or current
applied may be used. Connect the contact to a Zone terminal and
an adjacent ground terminal. Do NOT try to monitor a contact that
switches 120VAC. This will permanently damage the unit.
4–20mA: A 4–20mA transducer requires you to have an external
DC power supply for the transducer. Connect the positive wire of
your transducer to the positive terminal of your DC power supply.
Connect the negative terminal of the transducer to a Zone terminal
on the Sensaphone 2800. Connect the negative terminal from your
power supply to the adjacent ground terminal on the 2800.
+ -
Z O N E
1
+ -
Z O N E
2
+ -
Z O N E
1
+ -
Z O N E
2
+ -
Z O N E
1
+ -
Z O N E
2
4–20mA Transducer
Dry Contact
Input Zones
Terminal Strip
Dry Contact Sensor
NO/NC
Input Zones
Terminal Strip
Temperature Sensor
Thermistor
Input Zones
Terminal Strip
External Power Source
4-20mA transducer
VDC
4–20MA
Figure 5: Different Sensor Types connected to the Terminal Block
INSTALLING WIRELESS SENSORS
The 2800 can monitor up to 4 external wireless sensors. Sensors
are available to monitor temperature, humidity, power, dry contacts,