910 Datasheet, PDF (6/8 Pages) Magnetrol International, Inc. – ECHOTEL®CONTACTULTRASOUND

961/962 ^{Level Switches}
When you add-up the features, these all new
single and dual point switches are superior to any
ultrasonic or tuning fork level switch on the market.
Model 961
Model 962
Innovative Transducer Design
The tip-sensitive transducers have a pressure
rating (up to 2000 psig, 138 bar) higher than
any other ultrasonic gap or tuning fork level
switch. The dual gap transducer has a unique
flow-through upper gap that allows over 100"
(254 cm) between upper and lower gaps.
Combine these features with powerful pulsed
signal technology for superior performance in
difficult process conditions and you have the most
capable ultrasonic level switch available today.
Advanced Self-Test Technology
New self-test technology not only tests the
electronics, transducer, and piezoelectric crystals, _{Electronics Transducer}
but also checks for the presence of electromag-
netic noise interference. Should the diagnostic
data indicate a problem with the unit, an alarm
signal alerts the user to the malfunction.
Crystals Interference
Liquid Level Applications
CONTROL FUNCTIONS:
• High or Low level alarm
• Pump and Overfill protection
• Single-point 3-A sanitary
• Seal Pot level
OF SPECIAL INTEREST TO:
• Chemical, Petrochemical
• Water and Wastewater
• Food and Pharmaceutical
• Pulp and Paper
• Power Generation
Adjustable Time Delay
Turbulence and splashing can cause many
switches with fixed time response to produce
false level alarms. Model 961/962 switches
overcome this nuisance with an adjustable
time delay. A potentiometer sets a ¹â„2 to 45
second delay to disregard waves or splashes
so the unit reliably detects true liquid level.
Engineered Smart
Designed for wiring and
configuration ease, the
ergonomic housing contains
electronics, relays, time
delay potentiometer, push-
buttons for level and for
malfunction alarm testing,
high/low level DIP switch,
and independent/joint
DIP switch (line-powered
Model 961 shown).
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