Page 5 - Industrial Technology EXTRA - 22nd June 2020

a good deal of electrical calibration to
compensate for the non-linearity of the electrical
response before changeover. Furthermore, a
relatively long overall length and large diameter
for the previous LVDT sensor made the
gauge roller assembly some-
what bulky.
Positek’s P103 series
short stroke linear position
sensor with LIPS tech-
nology is ready-
calibrated to
the exact
travel required
so can be directly
installed into the machine for each set of paired
gauge rollers with no need for extensive and costly
setup. Positek’s LIPS technology is based on travel required, the short-stroke linear position
inductive coils and uses a unique custom integrated sensor's nominal length remains compact with no
circuit to produce an accurate analogue output unwieldy overhanging components for the gauge
signal. Its standard two-wire 4-20mA output roller assembly. Its stainless steel construction and
directly interfaces with the PLC and greatly IP65 sealing (IP67 on request) and wide operating
simplifies the previous wiring arrangement. temperature range of -40 to +125°C is a perfect fit
for food and beverage applications.
Reduced calibration requirements
With a linear response to within ±0.25% of the environmental characteristics
travel range and extremely low temperature The P103 series is generally available with spring
coefficient error, the sensor has improved the loaded or a free running plunger and is part of a
accuracy and long-term signal reliability resulting in wide range of linear, rotary and tilt sensors utilising
reduced machine recalibration and maintenance Positek’s LIPS technology which is characterised by
requirements. With no need to incorporate excellent EMC, vibration, shock and environmental
adjustments in the PLC, installation and specifications.
commissioning is now faster and less complicated. The comprehensive range includes ATEX, IECEx,
The sensor’s mounting flange face provides and CSA certification across many product lines
convenient mechanical interfacing and is used as with wide use in intrinsically safe, hazardous,
the reference for factory calibration, so when automotive, and submersible measurement tasks as
installed on the machine the only adjustment well as general industrial and scientific applications.
required is setting an initial mechanical datum for Through the range optional voltage and current
the roller gap using a Vernier gauge screw. output alternatives are available along with custom
The P103’s housing diameter is just 35 mm electrical and mechanical modifications
and, with the output calibrated to the measurement www.positek.com

June 2020 • INDUSTRIAL TECHNOLOGY EXTRA! • p5