Thermo Scientific LevelPRO, User Manual

Page: 17 / 128

Thermo Scientific LevelPRO User Manual 1
-
1
Chapter 1
Product Overview
Introduction
Note: This manual provides user instructions for the LevelPRO and
LevelPRO-T detectors. For the purposes of this manual, LevelPRO will refer
to the complete family of detectors, unless otherwise specified.
Thermo Scientific designed the family of LevelPRO measurement systems to provide
reliable, accurate level measurements for a wide variety of challenging applications. The
level detector, which mounts to the outside of the process vessel never contacts the
process material and can measure the process level in any vessel.
Each detector can convert the basic level measurement into a variety of output values
as appropriate for specific applications.
The system consists of up to three basic elements: the source head, which contains the
radioisotope source; the detector, which converts the incident radiation to a useable
electronic signal; and the integrated (LevelPRO) or optional remote (LevelPRO-T)
transmitter.
The radioisotope source emits gamma radiation, which passes through the vessel wall
and corresponds to the amount of radiation arriving at the detector. The detector then
measures the level of arriving radiation to determine the level of the process material.
The amount of radiation that reaches the detector varies inversely with the level of the
process material.
Figure 1-1. LevelPRO Measurement System