Specifications; Overview; Onboard Sensors; I/O Sensors - Geist Watchdog 100 Instruction Manual

Specifications

Overview

The Watchdog 100 provides remote environmental monitoring and alarming capability needed to detect climate
conditions in critical environments. Additionally, the Watchdog 100 provides one output relay that can be operated
remotely or set to automatically open or close based on alarm conditions. The Watchdog 100 is equipped with a built-
in web server with a 10/100 Mbps connection speed. Web pages are generated by the unit to monitor local
environmental conditions. No software other than a web browser is required for operation and several data formats are
available. The Watchdog 100 can be optionally configured at the factory to support Power-Over-Ethernet (PoE).
The Watchdog 100 has a built-in sensor to monitor temperature, humidity and dew point, as well as one port for adding
remote sensors. The Watchdog 100 also has four I/O ports for connecting additional external 5Vdc sensors such as
Flood and Door Sensors. All internal and external sensors are measured every 5 seconds. Sensor data collected by
Watchdog 100 units provides useful trend analysis data. While all values are not absolute in relation to a known unit,
trend analysis of the data allows users to view changes and draw useful conclusions about what is happening over time
in the monitored environment.

Onboard Sensors

Watchdog 100 contains the following onboard sensors:
 Temperature: Measures temperature and can be displayed in °C or °F. The accuracy is ±1 °F from -50 °F to
185 °F. Note: This sensor may be heated by internal circuitry in the unit; a temperature offset is available to re-
calibrate.
 Humidity: Measures the percent of water vapor in the air within ±5%.
 Dew Point: Calculated measurement of temperature at which moisture in the air will turn to liquid based on the
humidity and temperature measurements.
AI1: Scales 0 to 5 Vdc input to 0-99, dry contacts may be used.

AI2: Scales 0 to 5 Vdc input to 0-99, dry contacts may be used.

AI3: Scales 0 to 5 Vdc input to 0-99, dry contacts may be used.

 AI4: Scales 0 to 5 Vdc input to 0-99, dry contacts may be used.

I/O Sensors

The Watchdog 100 units come equipped with four I/O ports for connecting additional external sensors such as Flood
and Door Sensors. The four ports are designed to accept a 0-5 Vdc analog input; alternatively, an internal 100K
pull up resistor to 5 V allows for the use of dry contacts. The I/O port input is converted to a digital number ranging
from 0 to 99 and is displayed on the Sensors page. Unused I/O ports will display a value of 99. This range can be
adjusted on the display page allowing the user to modify the value to make it more meaningful to the user.
Flood sensors act as conductivity bridges. Moisture across the contacts causes the value to drop. Door switches
can be wired in a serial connection; if the chain is broken the entire group is classified as open. The limiting factor
on the I/O ports is the length of the wire, found to be around 400 feet.
GM1118 - Watchdog 100 Series User Manual BB3.0 3 Revision Date: 12/31/2015