Envoy-User-Manual

1 INTRODUCTION
Greenspan have developed a custom remote telemetry unit for the monitoring and control of most environmental
applications.
The ENVOY remote telemetry unit combines materials from high-end suppliers, such as Campbell Scientific Inc
and Maxon. Integrated into the one package; the ENVOY is a precision device designed for low-power applications.
The OEM Campbell Scientific datalogger includes CPU, analogue inputs, digital outputs, and memory, which are
controlled by the operating system in conjunction with the user program. The user program is written in CRBASIC,
a programming language that includes data processing and analysis routines and a standard BASIC instruction set.
Campbell Scientifics datalogger support software facilitates program generation, editing, data retrieval, and realtime
data monitoring.
The ENVOY is a multi-meter with memory and timekeeping, and an inbuilt 3G cellular modem. The datalogger
board is capable of measuring and controlling a wide range of instruments and devices that may be located at the
same location. The range of signal types supported by the ENVOY are:
• Analogue voltage
• Analogue current (An internal switch connects a 100 Ohm shunt resistor.)
• Resistive bridges
• Pulse output
• Period output
• Frequency output
• SDI-12 sensors
• Vibrating wire sensors (a Campbell AWV200 Interface is required)
For more about the data logger features, please refer to the Campbell Scientific CR200/CR200X Operators Manual
(http://s.campbellsci.com/ documents/us/manuals/cr200.pdf). Please note that not all signal inputs and outputs of
the CR200X have been included on the ENVOY.
Examples of scenarios where an Envoy may be used include:
ENVOY to ENVAULT Web-Based SCADA
YOUR SENSORS +
+
ENVOY Telemetry Module
ENVAULT Web-Based SCADA
ENVOY to onsite SCADA (EnviroSCADA)
YOUR SENSORS +
+ ENVIROSCADA
ENVOY Telemetry Module
ENVAULT Web-Based SCADA
QUICK START USER MANUAL ENVOY
GREENSPAN
03