User Manual

Global Water Instrumentation

Introduction

Thank you f or the purc has e of a Global Water SIT 65 S atellite Telemet ry Station.

This inst r um ent has been quality test ed to provide you with accur ate and reliable

operation for y our r em ote m onitoring needs. We are confident that y ou will find t his

product t o be a v aluable as s et to your applications. S hould y ou r equir e any

assistanc e, our technical staf f will be happy to help.

The SIT65 F ield S tation is a cost eff ectiv e and completely self-contained system for

relaying ana log and digital s ens or data from the most remote locations around the

world to any computer connected to the internet. Up to 8 analog inputs are available

in a number of configurations and up to 5 digital I/O channels that can be

programmed as input counters, status inputs or control outputs. A separate battery

voltage monit or is pr ov ided whic h c an be v ery useful when monit oring sy st em

performanc e, especially when using solar power. A VHF radio modem and antenna

is included for ac c es s ing the satellite net wor k and two different databases are

provided for v iewing your data. No complicated setup or antenna alig nm ent is

required, just an unobstruct ed v iew of the sky.

The satellite network that the SIT 65 c ommunic ates with is owned and operated by

Orbcomm. With over 30 low-eart h or biting satellites , they provide a constantly

rotating and complete coverage of the entire Earth. Ground stat ions spaced all

around the world rec eive the dat a from these satellites and relay it via the internet to

each of two s epar ate databases. These databases hav e different appearances and

features s o ac c ounts are provided to our cus tomers for both. They are also locat ed

in separate geographical locations and hav e different IP addresses; which prov ides a

higher level of redundant inter net access and data st or age.

The system is programmed at the factory to transmit at regular int ervals from every

few minutes to several hours apart depending on the application. The controller is

also able to send addit ional alarm trans missions when any of the digital inputs

change stat e. The databases allow the setting of t hr es hold lev els that will provide

email and text m es s age notification when these thresholds ar e ex c eeded. Alarms

levels can be set for any of the analog or digital s ens or s .

The Orbc omm net w or k charges fees based on the amount of data transmitt ed.

There are many input channel options available and when com bined with different

transmis s ion intervals, alarm tr ans m is s ions and c ontrol commands; a wide range of

data charges c an oc c ur . T her e is always a balance between the num ber of sensor

channels enabled, the transmis s ion interval, and the s ubs c r iption fees. These f ees