KW-71-4 Anemometer with Three-stage Alarm Function
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OVERVIEW

The KW-71-4 is an anemometer device that sounds an alarm at three separate alarm speed values. First, an electrical signal with a voltage proportional to the detected wind speed is received from a generator-type wind speed sensor. When the input voltage reaches a predetermined alarm speed value, a relay is triggered by a voltage comparator to sound the alarm buzzer.

FEATURES

1. Has three different alarm levels 2. Includes a blown fuse alarm signal 3. Can be run on either AC or DC power 4. Can be connected to a recorder or indicator device

SPECIFICATIONS

Alarm speed values	15 m/s, 20 m/s, 25 m/s (standard)
Alarm types	15 m/s: white lamp, no buzzer
	20 m/s: orange lamp, intermittent buzzer
	25 m/s: red lamp, continuous buzzer
Alarm circuit operation
Stop	Alarm stops automatically when wind speed falls below alarm level for 10 seconds or more.
Buzzer switch	Switch to OFF to stop buzzer.
Buzzer volume control	Control volume by turning volume knob.
Blown fuse signal	When a fuse (AC or DC) is blown on any circuit, an ON signal is detected at the contact.
Power	100 V AC ±10% or 24 V DC
	If unit is connected to both AC and DC power sources, it will automatically switch to draw on DC power source in event of AC power source failure.