Spectrum 3670I User manual

Catalog # 3670I
Silicon
pyranometer
Technologies, Inc.
Spectrum

2
Thank you for purchasing a Silicon Pyranometer Sensor
to use with your WatchDog Weather Station or Data
Logger, or your Field Scout Light Sensor Reader. The
sensor measures solar radiation between 300 and 1100
nanometers. This range is
important for evapo-
transpiration calculations.
This manual will aid you in
placement and mounting of
the sensor. Read it
thoroughly to insure proper
and effective use.
The Silicon Pyranometer Sensor includes a 6 foot data
cable; which is plugged into an available external port on
WatchDog weather station or data logger. Once the
sensor is in a representative “micro-climate”, insert the
data cable plug into the WatchDog external channel to log
solar radiation data.
Use With a WatchDog
Station or Logger
You may wish to remove the mounting bracket when us-
ing the silicon pyranometer sensor with a Field Scout
Light Sensor Reader. If so, loosen the thumbscrews, and
save the parts for reassembly.
Just plug the sensor into the reader, and SET the reader
to “SOLR RAD”. For more details, see the Field Scout
Sensor Reader Manual.
Use With a Field Scout
Light Sensor Reader

3
Install the sensor so that it is level. Once the sensor is
mounted, use the adjustment screws to level the sensor
so that the bubble is centered on the level indicator.
Mount the sensor on a 1” to 1¼” mast or pipe using the u-
bolt provided.
Position the sensor in an appropriate area that monitors
the plant conditions. Make sure the sensor is not being
shadowed or blocked by another external sensor.
Contact your cooperative extension agricultural agent for
further suggestions on field placement.
Inspect the sensors frequently to make certain the
sensors are still level and clear of obstructions.
Use SpecWare software to program the WatchDog to log
solar radiation on the desired port. Refer to the
SpecWare Instruction Manual for detailed launch and/or
readout instructions.
WatchDog Data
Logger inside
mini-radiation
shield
Place sensor in a
position that it will
mimic the sunlight
the plant is getting,
while being within
reach of external
WatchDog data port.

Spectrum Technologies, Inc
12360 S Industrial Dr. E
Plainfield IL 60585
[phone] or [phone]
Fax [phone]
E-Mail: [email protected]
www.specmeters.com
This product is warranted to be free from defects in material
or workmanship for 1 year from the date of purchase.
During the warranty period Spectrum will, at its option, either
repair or replace products that prove to be defective. This
warranty is void if the Spectrum products have been
damaged by customer error or negligence or if there has
been an unauthorized modification.
Returning Products to Spectrum
Before returning a failed unit, you must obtain a Returned
Goods Authorization (RGA) number from Spectrum. You
must ship the product(s), properly packaged against further
damage, back to Spectrum (at your expense) with the RGA
number marked clearly on the outside of the package.
Spectrum is not responsible for any package that is returned
without a valid RGA number or for the loss of the package
by any shipping company.
Warr anty
Specifications
Range 0-1250 W/m2, ±5%
Excitation Voltage 3.0-5.0VDC
Sensor Output 0-2.5V
Linear: W/m2= V * 500