Phonetics 1104 user manual Sensor Connected to an Alert Input

Sensaphone® Model 1104 User’s Manual

of sensor connected to each alert input (refer to Chapter 5, Section 5.1).

An input configured as “temperature” is designed to evaluate a range of settings. The Model 1104 will read the temperature at the sensor’s location and compare that value to programmed high and low temperature limits. Temperature inputs must be used with Phonetics Remote Temperature Sensor.

NOTE

Before wiring, it is advisable to disable the inputs to prevent accidentally tripping an alarm. See Chapter 5, Section 5.2.

2.10 Installing the Sensor

After you have selected the sensor, loosen the screw of the alert input and its corresponding ground. Two wire leads are used to connect any monitoring sensor. Fasten one lead to the numbered screw and the other lead to GND. Tighten both screws. If the input was not disabled, the Model 1104 may recite its “Alert Condition Exists” message as you connect the sensor. If it does, just press any key to stop it. Re-enable the input after wiring. Refer to Figures 2-6 and 2-7 for connecting a sensor to an alert input.

GND

1

GND

2

GND

3

GND

4

Sensor wired to

Alert Input 3

Figure 2-6. Sensor Connected to an Alert Input

Any sensor can be attached to the Model 1104 using 22-gauge wire. The sensor can be several hundred feet from the unit, as long as the total resistance of the circuit is not greater than 50 ohms. Use wire appropriate for the application.

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