Protectowire FiberSystem 8000 User Manual

Specifications and Regulatory Information
Definition of Terms
Absolute accuracy (uncertainty)
When taking the difference between measured temperature and
actual temperature of the sensing fiber, ΔT
i
, over measurements i
throughout operating temperature range and throughout sensing
fiber temperature range, the Absolute accuracy (uncertainty) T
Abs
is calculated as:
T
Abs
= StDev
i
{ ΔT
i
}
“StDev
i
{}” denotes the standard deviation over index i (over a
sufficiently large sample base).
The statistics (standard deviation) is based on an ambient
temperature evenly distributed over the operating temperature
range and a sensing fiber temperature evenly distributed over the
sensing fiber temperature range over measurements i.
Conditions: Uniform temperature distribution within the fiber.
After calibration of the sensing fiber as specified. Other conditions
as specified.
Note:
Calibration of the sensing fiber adjusts the temperature
difference ΔT
i
, at the calibration points to zero.
Note:
Any temperature offset or nonlinearity of the user’s
reference thermometer used for calibration of the sensing fiber
leads to a corresponding temperature scale error of the
FIBERSYSTEM 8000 unit.
Distance range
The maximum distance from the FIBERSYSTEM 8000 that can
be covered by a measurement (e.g. along a bore hole, along a
tunnel or along a power cable). The distance range depends
on the sensor configuration (see “Single-ended” and “Dual-
ended”).
Dynamic range
The maximum two-way loss within the sensing fiber to and from
the measured point for which the FIBERSYSTEM 8000 unit is
designed.
Note: The two-way loss in dB is twice the (one-way) loss of the
sensing fiber from the FIBERSYSTEM 8000 unit system to the
measured point.
The Protectowire Company, Inc.
FIBERSYSTEM 8000 - Linear Heat
Series
38

Protectowire FiberSystem 8000 Specifications

General

Brand	Protectowire
Model	FiberSystem 8000
Category	Controller
Language	English