Spectrum Technologies WatchDog 2000 Series User manual

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2000 Series Weather Stations
Analog Temperature / RH Sensor
Upgrade Kit
PRODUCT MANUAL
KIT # 3613WDU

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Contact info for customer support or to place an order:
Call 800-248-8873 or 815-436-4440
FAX: [phone],
E-mail: [e-mail].
Web: www.specmeters.com
Spectrum Technologies, Inc.
3600 Thayer Court
Aurora, IL 60504
Package Contents
 3613WD — Analog Temperature and RH Sensor for
Weather Station with cable tie
 3613WDP — Radiation Shield Plate
 3300WD82 — 2000 Series Microcontroller
The 3613WDU Analog Temperature / RH Sensor Upgrade
Kit is used to upgrade Watchdog 2000 Series Weather Station
models: 2900ET, 2700 and 2550 to use the 3613WD Temper-
ature / Humidity Sensor.
This manual provides instructions on upgrading a Watchdog
2000 Series Weather Station with a new Analog Temperature /
RH Sensor.
Specifications
 Temperature
Range: -40 to 257 oF (-40 to 125 oC)
Accuracy (typical): -40 to 185 oF, +/- 0.5o
(-40 to 85 oC, +/- 0.3o)
Accuracy (maximum): -40 to 185 oF, +/- 0.7o
(-40 to 85 oC, +/- 0.4o)
 Humidity
Range: 0 to 100%
Accuracy (typical): 0 to 100%, +/- 2%
Accuracy (maximum): 0 to 90%, +/- 2.5%
90 to 95%, +/- 3%
95 to 100%, +/- 3.5%

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Step 1: Assemble the New Sensor &
Shield Plate
1. Insert the 3613WD sensor into the 3613WDP radiation
shield plate as shown below.
2. Turn the sensor module 90 degrees clockwise to lock it
into the shield’s opening.

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1. Disconnect all sensor wires on the bottom of the Weather
Station display module.
2. Remove the four Phillips head screws on the front of the
module.
3. Pull the module straight out of the station enclosure (may
require light prying or manipulation.
4. Remove the battery cover, and remove all batteries.
5. Flip over the display module and locate the microcontrol-
ler chip in its socket. With a small screwdriver or knife,
gently pry the chip out of the socket by alternating ends.
Grasp the microcontroller by the ends of the black plastic,
not the pins.
Step 2:
Replace The Microcontroller

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6. Align the new microcontroller with the socket (note the
polarity markings on the microcontroller, the socket, and
the circuit board). Be sure all pins are aligned with the
socket, and press the chip firmly into place.
7. Reinsert the batteries. The unit should beep when the last
battery is inserted, and the display should show the model
and serial number, and then ask that date and time be set.
If not, double-check that the polarity of the microcontroller
and socket are the same, and that the the batteries were
inserted properly.
8. Replace the display module back into the station enclo-
sure, reinsert and tighten the four Phillips head screws,
and reconnect the sensor wires.

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Step 3: Replace the old with
the New Sensor
1. Unscrew the nylon threaded nuts that hold the radiation
shield plates on the bottom of the station.
2. Remove and discard the bottom plate. Remove the old
sensor.
3. Put the new sensor and plate assembly upgrade (from
page 3 assembly) on the bottom of the stack.
4. Screw the nylon threaded nuts to hold the stack in place.

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5. Remove one of the batteries from the Weather Station.
6. Unplug the cable of the old sensor from the “Temp/RH”
port.
7. Unscrew the gland at the bottom of the WS housing and
pull the cable out of the enclosure.
8. Remove the old sensor cable from the station, noting
how it is routed from the housing to the radiation shield.
You may have to cut a zip-tie to release the cable.
9. Route the new sensor’s cable along the same path that
the old cable used. Insert it through the cable hole and
screw in the gland. Plug the cable into the “Temp/RH”
port. Use the zip-tie to neatly tie the cable to a radiation
shield mounting post (see the photo on the right below).
10. Insert the battery. While the LCD is displaying
“PLEASE WAIT”, an “s” will appear in the lower left of
the LCD to indicate the new sensor is present.

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Warranty
This product is warranted to be free from defects in material or work-
manship for one 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 does not cover damage due
to improper installation or use, lightning, negligence, accident, or un-
authorized modifications, or to incidental or consequential damages
beyond the Spectrum product. Before returning a failed unit, you
must obtain a Returned Materials Authorization (RMA) from Spec-
trum. Spectrum is not responsible for any package that is returned
Spectrum Technologies, Inc
3600 Thayer Court
Aurora, IL 60504
[phone] or [phone]
Fax [phone]
E-Mail: [e-mail]
www.specmeters.com
Rev. 6/2016