SATO 7760-00 Instruction Manual

This is an anemometer, composed of a sensor of 3-cup assembly (AC generator type) and an indicator.
Specifications
1. Sensor (Generator)
Type of sensor
Starting wind speed
Withstand wind speed
Output voltage
2. Indicator
Type
Scale Range
Allowable error
Principle of measurement
1. Generator
Rotation of the 3-Cup assembly is transmitted to an AC generator. The AC voltage which is
proportional to wind speed is output.
2. Indicator
AC voltage from the generator is turned to DC voltage by a rectifier and the DC voltage operates
moving-coil type voltmeter.
Wiring
1. Generator
A short cord (approx. 1 m) is connected with the generator.
cord are used for the output of generator. Connect these to the indicator.
2. Indicator
Connect the wires with the terminals below the switch. There is no polarity since this is AC input.
Cautions at wiring between generator and indicator
If the wire resistance becomes large, it leads to error on indication of wind speed (about -1% at 200 ohm
per wire, 2.5km at 0.5mm², 3.5km at 0.75mm²).
transmission antennas and etc.
Instruction Manual for
No. 7760-00 3-Cup Anemometer
: 3-cup assembly - AC generator (four poles, non iron core)
: less than 2 m/s
: less than 90 m/s
: 30±1VAC at 60 m/s (output impedance: approx. 500 ohm)
: Rectifier type voltmeter (desk-top type)
: 0 to 60 m/s
Min. scale: 1 m/s (more than 2 m/s)
: Within ±0.5 m/s at less than 10 m/s
Within ±5% for the value at more than 10 m/s
Make sure to separate the cord from high-voltage circuit.
The black and white wires of the short
Use shield cord when it may be induced by
No.1