Vibratory
Level Indicator Is Ideal For Materials With
Lower Bulk Densities
The Model
PZP vibrating style point level sensor provides
exceptional sensitivity for detecting bulk solid
materials with a density as light as 1.25 lbs./ft.3 (pounds
per cubic foot) where other sensor technologies might
be ineffective. Additionally, the PZP does not require
calibration and uses a unique diamond shape single
element that is immune to material packing and bridging,
unlike traditional tuning forks. Plus, it has no
mechanical moving parts.
The Model PZP is also designed for versatility. It's
ideal for situations where the range of bulk density,
particle sizes, humidity levels, and/or dielectric constants
of the materials being stored or collected (dust collection
systems) varies widely. This can be a challenge for many
level sensor technologies; however, the PZP is capable
of detecting bulk solid materials with a density as light
as 1.25 lbs./ft.3 all the way up to 100 lbs./ft.3.
The Model PZP vibrating point level sensor uses dual
piezoquartz crystals. These crystals respond to electrical
excitation by vibrating, which results in the vibration
of the sensing element at about 280Hz. The uniqueness
of the PZP's diamond shape sensing element and electronics
provides the sensitivity to detect very lightweight materials,
in addition to heavier materials. Applications
for use include high and low level indication and as
a back-up for dust collection systems. Typical materials
include plastics, cement, fly ash, chemicals, lime, clay,
sawdust, food, flour, rice, cereal and more.
Monitor Technologies LLC, located
in Elburn, Illinois, is a leading manufacturer of level
measurement instrumentation, solids flow indicators,
particle emission monitors and aeration devices for
the worldwide powder and bulk solids markets. The experience
and market knowledge gained over 50 years of business
has earned Monitor a reputation for providing high
quality and reliable product solutions backed with
trusted customer service. For more information please
visit www.monitortech.com.
The
SafePoint rotary paddle level switch with a self-validating design
detects material presence plus continuously monitors its own ability
to function. The analysis includes sensor health and system power
failure, which makes the SafePoint truly “fail-safe”.
The SafePoint incorporates patented use of Hall-Effect technology,
dual outputs to indicate both material presence and unit health,
and microcontroller technology to continuously protect bulk solids
processing and storage from the consequences of unknown sensor
failure by providing immediate indication of a sensor failure
and confirmation of proper operation.
Other practical features of the SafePoint include rugged construction,
motor shut-off when paddle becomes impeded to maximize motor life, twist On/Off
cover for bolt free removal, and local status indicating light (except hazardous
location models)
A practical application for the SafePoint would be to use this "true"
fail-safe product if undetected sensor failure could result in a
catastrophic process problem.
