Sierra Monitor Corporation Sentry Webserver User Manual

The Sentry Gas Risk Management System offers a
cost-effective solution for a graphical based display
of Sentry data using a web browser and the Sentry
WebServer option.

Sierra Monitor Corporation offers a wide range of choices
for data output from Sentry Gas Monitoring systems. In
some cases a simple printer output of gas conditions, cali­bration confirmations and alarms is satisfactory to meet
due diligence requirements. In large plant-wide monitoring
situations the Modbus serial communications output is
used to interface to existing or new GUI programs that
might include information from other safety and process
systems in the plant. But for most applications the solu­tion lies between these two choices.

To meet that need Sierra Monitor Corporation offers the
Sentry WebServer . Sentry WebServer captures the imagi­nation of safety managers and instrumentation engineers
by combining the power and flexibility of the Sentry Gas
Risk Management System with the interoperability strength
of the FieldServer WebServer from FieldServer Technolo­gies. The reliability of a proven gas detection system is
combined with the modern technology of the web.

The WebServer provides a cost-effective, easy-to-use
graphical display of hazardous gas conditions using the
universally available Microsoft™ web-browser. It is no
longer necessary to search separately for a gas detection
system that might have a serial output and then search for
a suitable graphical user interface package that might work
with that system and then have to learn how to configure
and use the package or hire a consultant to do the work.
Now, a single source supplier , Sierra Monitor , can provide
the entire solution with a fully integrated system.

Sentry Webserver

 Safety data presented visually on any PC of your

choice located anywhere in the plant or even re­motely

 Complete interaction with the hazardous gas de-

tection system through a familiar web browser and
no requirement to learn a new GUI program

 Ability to web-browse to system data from your

LAN, WAN or over the Internet

 Easy to configure graphical color changes are dis-

played as events

 All your current alarms dynamically displayed and

updated on a single web page

 An event log provides easy access to history for

due diligence

 Cost-effective system includes the ActiveX tools

to configure using FrontPage from Microsoft

 The full system available from a single supplier

with an outstanding reputation for before and after
sales technical support

The WebServer package includes a Sentry display pre­configured for a web browser enabling the user to operate
the Sentry system remotely from any PC connected to
the Ethernet! Imagine having the ability to manage your
plant-wide gas risk management system from anywhere
in the plant! Imagine having password protected access
to your primary gas safety monitoring system from the
control room, the safety manager’s office, or remotely!

Sierra Monitor Corp. 1991 T arob Ct., Milpitas, CA 95035, USA, 408-262-661 1, 800-727-4377, F AX: 408-262-9042

Web Site: http://www.sierramonitor.com E-Mail: [e-mail]

© 2009 by Sierra Monitor Corporation

Sierra Monitor’s Sentry Gas Risk Management Sys­tem has always been a leader in data handling for haz­ardous gas monitoring systems for over 15 years. First
with digital 2-way communication bus from sensors to
controller, first with serial Modbus communication out-
put for plant-wide systems, first with the ability to in­terface to other sensors and devices and now first to
offer a cost-effective web-based graphical system for
monitoring plant-wide hazardous gas conditions.

How it Works

Sentry Webserver

All of the data available from the Sentry Modbus serial
communications link interfaces to the FieldServer via
an RS-232 link. The FieldServer contains the software
and interoperability features to convert that information
into a graphical display package that can be viewed by
Microsoft Internet Explorer browser . Standard introduc­tory screens are provided free with the system to en­able the user to quickly start operating. With the
WebServer option the user receives the FieldServer , con­figuration software and the ActiveX tools necessary to
modify the provided display or create their own graphi­cal display. These simple tools along with an already
familiar web browser means that the user does not need
to endure the cost of learning a new program and hiring
an integrator to develop the system. The system can
easily be designed to meet your specific graphical and
user interface needs using FrontPage from Microsoft.
Also, Sierra Monitor can provide graphical design and
development service if desired.

The standard WebServer package includes an initial

“home” screen, one graphical “zone” screen, a tabu­lar “zone” screen, and alarms screen plus an event
log screen. The user can then modify the Home screen

and Zone screens to meet their specific needs or add ad­ditional screens using Microsoft FrontPage. Examples of
these screens are seen below. The Alarms p age contains
all active alarms and notes whether or not they have been
acknowledged. The Event Log page notes all events (alarms
and change of states) that have occurred over a recent
period of time.

Ordering Information

5391-01 Sentry WebServer , 1 Sentry Controller
5391-02 Sentry WebServer , 2+ Sentry Controllers

For more information about the Sierra Monitor Sentry sys­tem visit www.sierramonitor.com.

Sierra Monitor Corp. 1991 T arob Ct., Milpitas, CA 95035, USA, 408-262-6611, 800-727-4377, F AX: 408-262-9042

Web Site: http://www.sierramonitor.com E-Mail: [e-mail]

© 2009 by Sierra Monitor Corporation