Protectowire FiberSystem 8000 User Manual

Getting Started
Introduction & Measurement Principle
The Protectowire Company, Inc. FIBERSYSTEM 8000 PTS
(Protectowire Temperature Sensing) Series is optimized and
certified for fire detection applications. The instrument can be
configured for various alarm criteria and can be connected to a
fire control panel using the relay inputs and outputs. It is
categorized as a DTS (Distributed Temperature Sensing) System
which are optical fibers functioning as linear sensors. For the
purposes of this manual these two acronyms (PTS and DTS) are
used interchangeable.
The Protectowire Company, Inc.’s distributed temperature
measurement is based on the proven Raman-Optical Time-
Domain-Reflectometry (OTDR) technique. An optical laser
pulse propagating through the fiber gets scattered light back
to the transmitting end, where it is analyzed. The intensity of
the Raman signals is a measure for the temperature along the
fiber.
The backscattered light is spread across a range of wavelengths.
Some of these wavelengths are affected by temperature changes
while others are immune. By very accurately measuring the
Difference in the signal intensity of the backscattered light an
Accurate temperature measurement can be made.
The local position of the temperature is determined by measuring
the arrival timing of the returning light pulse similar to a radar
echo showing the distance of a car or plane.
6
The Protectowire Company, Inc.
FIBERSYSTEM 8000 - Linear Heat
Series

Protectowire FiberSystem 8000 Specifications

General

Brand	Protectowire
Model	FiberSystem 8000
Category	Controller
Language	English