F3UV
F3UV
15
Precautions
Be sure to observe the precautions listed here. These
precautions are essential for safe operation.
·
Do not use these Units in locations with flammable or
explosive gases.
·
Do not use these Units in water.
·
Do not attempt to disassemble, repair, or improve these
products.
·
Always use a power supply voltage that is within the specified
operating range. Do not use with an AC power supply.
·
Be sure that wiring is correct, such as the polarity of the power
supply leads.
·
Connect loads properly.
·
Do not short-circuit the load’s terminals.
·
Do not mount the Amplifier Unit in a location where it will be
exposed to UV light.
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PRECAUTIONS COMMON TO THE
F3UV-SERIES
Wiring
Connections
Make sure that the power supply voltage is below the maximum
voltage before turning the power ON.
Be sure that the terminal polarity and wiring are correct.
Never share a conduit that is used for high-voltage or power
lines.
Use extension cords with a minimum thickness of 0.3 mm
2
, less
than 5 m long, and check operation before using.
Power Supply
When using a commercial switching regulator, ground the FG
(frame ground) and G (ground) terminals. Output signal noise will
be excessive if the power supply is not grounded.
After turning on the power supply, wait for at least one second
until consistent detections can be performed before using the
Monitor. If separate power supplies are used for the F3UV and
connected devices, always turn ON the F3UV’s power supply
first.
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INSTALLATION AND OPERATION
Installation
UV light is harmful, so be sure to turn OFF the UV light source
before installing the F3UV.
Sensitivity Setting
The analog output value will change due to temperature drift. If the
temperature is rising, wait for the temperature to stabilize before
setting the sensitivity.
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PRECAUTIONS FOR THE F3UV-A30/A03
Installation
Installation Torque
Torque the sensor’s Main Unit screws to 0.49 N-m (0.36 ft lbs)
max.
Precautions Regarding UV Light
The sensor’s display and cord are not protected against UV ex-
posure. If these parts will be exposed to UV light, protect them
with the F39-HU2 Protective Cover and F39-CU1M Protective
Tube.
When UV light will be in the user’s field of vision or directly con-
tact the skin during adjustment, use a shield or other protective
device to prevent injury.
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SENSITIVITY ADJUSTMENT
Use the following procedure to adjust the analog output to 5 V
before initial operation or after replacing the UV light source.
1. Set up the Sensor and the UV light source to be monitored.
The sensitivity adjuster is factory set to its minimum setting
(all the way to the left).
2. Turn ON the UV light source.
3. Check whether the operation indicator (orange) of the
Sensor is lit. The operation indicator will light if the analog
output value is between 4 and 5 V. If it does not light,
adjust in the following way.
Rough Adjustment
The operation indicator will light if the analog output value is
between 4 and 5 V. In this case, proceed to
Fine Adjustment
below. If the operation indicator is not lit, check whether the
operation indicator can be made to light by turning the
sensitivity adjuster. If the operation indicator still does not
light, then the UV intensity is either too high (i.e., exceeds
Sensor specifications, with an analog output value greater
than 5 V), or is too low. If the UV intensity is too high, make
the operation indicator light by either using the F39-HU1
Filtering Cover (sold separately), or moving the Sensor
farther away from the UV light source. If the UV intensity is
too low, move the Sensor closer to the UV light source, until
the operation indicator lights.
Fine Adjustment
Adjust the sensitivity adjuster until the analog output value is
5 V. If it not possible to obtain a value of 5 V this way, then
the distance between the Sensor and the UV light source is
inappropriate. Move the Sensor either closer to, or farther
away from the UV light source.
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CLEANING
Never use paint thinner or mineral spirits of any kind. If there is
debris or dust on the light-receiving window, wipe it off with a soft
cloth or blow it off with a low-pressure air sprayer.
