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DAVIS UV Sensor Manual do Utilizador

Consulte online ou descarregue Manual do Utilizador para Suportes DAVIS UV Sensor. UV Sensor Manual - Davis Instruments Corp. Manual do Utilizador

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Product # 7841, 7843, 6490
UV S
ENSOR
F
OR
S
TANDARD
,
I
NDUSTRIAL
, & V
ANTAGE
P
RO
W
EATHER
S
TATIONS
The UV Sensor is a precision instrument that detects ultraviolet (UV) radiation
at wavelengths of 290 to 390 nanometers. The spectral response is closely
matched to the Erythema Action Spectrum, defined by McKinlay and Diffey
(1987) and internationally recognized as the radiation that is most responsible
for causing redness of the human skin.
Avoid touching the small white diffuser at the top of the sensor.
Any skin oil
on this surface will degrade the sensitivity of the sensor. To remove any oil
present, clean the diffuser with a clean swab and ethyl (denatured) alcohol. Do
NOT use rubbing alcohol.
Note:
It should be noted that sunburn is not the only consequence of exposure to UV radiation. Skin cancers,
cataracts, and damage to the immune system are caused by UV. Exposure to UV should be minimized.
The sensor is made up of the following components:
✦
Shield
The outer shell shields the sensor body from thermal radiation and pro-
vides a path for convection cooling of the body, minimizing heating of
the sensor interior. It provides a cutoff ring for cosine response, a level
indicator, and fins to aid in aligning the sensor with the sun’s rays.
✦
Body, housing the following components:
✦
Cap
Retains the diffuser and filter
✦
Diffuser
Provides (with gasket) a weather-tight seal and excellent cosine response.
✦
Filter
With multiple hard-oxide coatings, the filter provides the Erythema
Action spectral response. It is stable in the presence of heat and humidity.
✦
Detector
The semiconductor diode, with the filter, responds only to radiation in the
region of interest.
✦
Amplifier
Converts the detector current into a 0 to +2.5V signal.
✦
Cable
The standard version of the sensor includes an attached standard 40'
(12 m) cable. The industrial version includes a 16' (5 m) shielded cable.
The Vantage Pro version includes a standard 3' (0.9 m) cable.
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Resumo do Conteúdo

Página 1

Product # 7841, 7843, 6490 UV S ENSOR F OR S TANDARD , I NDUSTRIAL , & V ANTAGE P RO W EATHER S TATIONS The UV Sensor is a precision instrume

Página 2

Page 10 UV Sensor Mounting on a Wood Surface Follow the instructions below to mount the sensor on a wood surface. 1. Using the template printed at th

Página 3

Standard and Industrial Versions: Installation Page 117. Secure the sensor to the mounting surface by driving the screws into the appropriate holes as

Página 4 - NSTALLATION

Page 12 UV SensorVANTAGE PRO VERSION: INSTALLATION ON THE MOUNTING SHELFFollow these instructions to mount the UV sensor on the shelf. The shelf has t

Página 5 - NDUSTRIAL

Vantage Pro Version: Installation on the Mounting Shelf Page 13Securing the Sensor on the Shelf1. Remove the rain collector cone: turn it counter-cloc

Página 6

Page 14 UV SensorRouting the Sensor CableRoute the sensor cable through the base of the rain collector and out through a hole, then connect it to the

Página 7

Maintaining the Sensor Page 155. Cut off the ends of the cable ties. 6. Put the rain collector cone back on the base, turning it clockwise until the l

Página 8

Product Numbers: 7841, 7843, 6490Davis Instruments Part Number: 7395.095UV Sensor, Standard, Industrial, & Vantage Pro versionsRev. C Manual (1/12

Página 9

Page 2 UV Sensor M OUNTING H ARDWARE Please make sure you have all components listed below before continuing. ✦ Shield ✦ Body with cable attached ✦

Página 10 - PLACING SHIELD ONTO BODY

Contents Page 3 C ONTENTS S PECIFICATIONS ARE A VAILABLE For detailed technical information on the UV sensor, call Technical Support (510) 732-781

Página 11 - Cable Tie

Page 4 UV Sensor Installing the Sensor Follow the instructions in this section to install your sensor. Before you begin, consult the System Installat

Página 12

Standard and Industrial Versions: Installation Page 5 Typical Industrial Installation The illustration below shows typical industrial UV installation

Página 13

Page 6 UV Sensor Mounting on the Sensor Mounting Arm Follow the instructions below to mount the sensor on the Sensor Mounting Arm (SMA). 1. Route the

Página 14

Standard and Industrial Versions: Installation Page 7 6. Using the bubble level on the sensor as a guide, adjust the sensor until it is level by tigh

Página 15 - MAINTAINING THE SENSOR

Page 8 UV Sensor 3. Place a flat washer over the end of each screw and insert it into the body.4. Place a spring over the end of each screw and hold t

Página 16 - TECHNICAL SUPPORT

Standard and Industrial Versions: Installation Page 9 8. If necessary, adjust the position of the sensor by tightening or loosening the levelling scr

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