WatchDog A110, A125, A150, A130 Product Manual

®

A-Series

Data Loggers

PRODUCT MANUAL

Model #’s

A110, A125, A130, and A150

Contents

Model Specifications 2
Connecting to the Computer 3
SpecWare Software 4
Installation and Placement 6
Battery Replacement 7
Trouble Shooting 7
Warranty 8

Model # Internal

Sensors

A110
A125

A130

A150

Temperature Range: -40 to 185°F (-40 to 85°C)

Accuracy: ±1.1°F from -4 to 122°F (±0.6°C from -20 to 50°C),
else ±2.2°F (±1.2°C )
RH Range: 0 to 100%
Accuracy: ±3% from 10 to 90% at 77°F (25°C), else ±5%
Leaf Wetness Range: 0 to 15

Temp None 8,000 data points
Temp Temp

Temp Leaf Wetness

Temp/RH None

External
Sensors

Measurement

Capacity

8,000 data points

(4,000 per sensor)

8,000 data points

(4,000 per channel)

10,666 data points

(5,333 per channel)

For customer support, or to place an order, call Spectrum
Technologies at [phone] or [phone] between
7:30 am and 5:30 p.m. CST, FAX at [phone], or E-mail
at [e-mail].

Spectrum Technologies, Inc

3600 Thayer Court

Aurora, IL 60504

www.specmeters.com

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Thank you for purchasing a WatchDog A-Series Data Logger.
This manual describes how to use your WatchDog Logger and

keep it working accurately for many years. Read this manual
thoroughly in order to get effective performance from your data
logger.

IMPORTANT NOTE FOR THE A125 and A130:

The A125 and A130 logger models use the same physical
logger. The logger is designed to read temperature as the
external sensor. For the A130 logger, the Leaf Wetness
sensor value is saved in the logger as a temperature, and is
then translated back to a leaf wetness value by SpecWare.

Connecting to the

Computer

The A-Series loggers do not use the standard gray PC interface
cable that accompanies SpecWare Software. Instead, you need
the A-Series PC Connection Cable (Item 3661A). The cable is a
serial USB cable and requires that you install the driver prior to
its use. The driver is included on the SpecWare Software
installation CD for SpecWare 9 Pro or Basic, Version 9.01 Build
206 or greater, as well as on the SpecWare 9 update page at
www.specmeters.com.

After installing the drivers, if you plug in the cable before you
start SpecWare (or leave it plugged in), SpecWare will
automatically find the COM port used by the cable.

The 2.5mm stereo pin connects to the jack labeled “Com” on the
data logger. The jack labeled “Ext” is reserved for an external
sensor (if applicable).

The only time you must have the WatchDog connected to the
computer is during the launching and downloading of the data
logger. After the logger has been launched, and/or downloaded,

disconnect the logger and place it in the environment you wish to
monitor.

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