Front:
Sensall® Liquid Level Switch challenges
capacitance and conductivity probes,
floats, etc. For only
$134 you get features,
reliability and precision
that you can't find in
ordinary devices costing
up to twice as much.
Its the low cost way to
automatically monitor
and control tank
filling and empty-
ing and to
operate pumps,
No moving
parts. Nothing
to wear out.
Repeatability to
within 1/32 of an
inch.
solenoid valves,
or audio and visual
alarms.
Integral unit de-
sign.
Simple installa-
tion. Threads
Explosion-proof and watertight.
No adjustment or calibration needed.
Exclusive ultrasonic high frequency signal. Unaf-
fected by coating build-up, variations in viscosity,
temperature or pressure.
NATIONAL SONICS
DIVISION OF ENVIROTECH CORP.
☐ I want more information about the
Sensall 501 Liquid Level Switch.
□ Have your representative call.
Name
Title
into any 3/4"
NPT fitting.
316 stainless
steel sensor.
Welded heavy
wall design.
Corrosion-free
in most liquids.
ENVIROTECH
Company
City-
State.
Zip
Telephone
Extension.
Back:
Business Reply Mail
No postage stamp necessary if mailed in the United States
NATIONAL SONICS
DIVISION OF ENVIROTECH CORP.
120 Milbar Boulevard
Farmingdale, N. Y. 11735
FIRST CLASS
PERMIT NO. 343
Farmingdale. N. Y.
