Spectrum 3669 User manual

Pressure
Transducer
PRODUCT MANUAL
Item 3669

General Overview
Thank You
Thank you for purchasing a Pressure Transducer to
use with your WatchDog Data Logger in conjunction
with an Irrometer Tensiometer to log soil moisture.
This manual will aid you in placing and mounting of
the Pressure Transducer. Read it thoroughly to en-
sure proper and effective use.
The Pressure Transducer includes a 6 foot cable that
is plugged into an available external sensor port on a
WatchDog data logger or weather station. Once the
Tensiometer (with the Pressure Transducer installed)
has been positioned at the desired sensor depth,
connect the cable to the WatchDog external channel
to log soil moisture data.
Place the Irrometer Tensiometer in an area which is
appropriate for monitoring the conditions in which the
plant is experiencing. Contact your cooperative
extension agricultural agent for further suggestions.
Refer to the Irrometer Tensiometer Instructions
for complete details.
Use SpecWare software to program the WatchDog
to log soil moisture. Refer to the SpecWare User
Guide for detailed launch and/or readout
instructions.
Pressure
Transducer
Irrometer
Tensiometer

Installation
The Pressure Transducer includes a 6 foot cable that
is plugged into an available external port on an original
WatchDog data logger, WatchDog micro-station,
WatchDog mini-station, or WatchDog full weather sta-
tion. To install the transducer:
1) Remove vacuum gauge from Irrometer
Tensiometer with a 9/16” wrench.
2) Apply thread sealant and screw the transducerinto
the Irrometer Tensiometer. Tighten with a wrench.
3) Use a thread sealant on fittings. Screw the vacuum
gauge into the transducer. The gauge should be facing
up.
4) Prepare the Tensiometer for field installation as per
IRROMETER’S instructions.
Screw this end
into Tensiometer
Screw Vacuum
gauge into these
threads
Cable to
WatchDog
Specifications
Accuracy ± 2%
Resolution
1000 Series
2000 Series
0.097 kPa
0.025 kPa
Note: The thread
size for the trans-
ducer is not com-
patible with the
mini tensiometers

3600 Thayer Court
Aurora IL 60504
[phone] or [phone]
Fax [phone]
E-Mail: [e-mail]
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.
Warranty
R 6/19