Davis Sensor - UV for GroWeather or EnviroMonitor Bedienungsanleitung PDF herunterladen

Product # 7841, 7843, 6490

UV S

ENSOR

TANDARD

NDUSTRIAL

, & V

ANTAGE

EATHER

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.

1 2 3 4 5 6 ... 15 16

Inhaltsverzeichnis

Seite 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

Seite 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

Seite 3

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

Seite 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

Seite 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

Seite 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

Seite 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

Seite 8

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

Seite 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 ✦

Seite 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

Seite 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

Seite 12

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

Seite 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

Seite 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

Seite 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

Seite 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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