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Features
- No moving
parts
- Simple installation
- Hazardous
area approvals
- Ignores foams
- Unaffected
by:
- RF
Interference
- Conductivity
- Droplets
- Most
coatings
- Liquid
colour/opacity
Description
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Wetside:
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316
stainless steel
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Dryside:
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Glass
filled nylon
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Protection
class:
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IP66/IP67
Housing is rotatable 330 on sensor
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Power
supply
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+50C
up to 125C wetside
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Cable
entry:
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24V
- 240VDC or AC (50-60Hz)
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Terminals:
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Via
M16 cable gland supplied
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Max.
switched load:
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2.5mm2
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Min.
switched load:
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500mA
continuous 7.5A continuous
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Max
Peak Load:
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(see
voltage drop)
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Current
drawn: load off:
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5A
for 40ms max
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Voltage
Drop:
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<
4.5V continuous
4.5V@500mA
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Time
delay/response:
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10V@7.5mA
(water)
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Switching
hysteresis:
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1
S wet to dry
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Viscosity
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150mS
dry to wet
+1mm
5000cs max (at 25C)
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Max. Operating
pressure - 70 bar between -40C tp +50C
Max. Operation temperature - 52 bar at +125C
Min Operating temperature - +125C wetside
Min Ambient temperature - -40C wetside
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Operation
A
compact, self-contained ultrasonic liquid level switch with 316
stainless steel wetted parts and 240V switching capability. Squitch
is a '2 wire' product that is; it requires only 2 electric connections,
using standard instrument wire. Co-axial cable is not required.
The squitch is connected in series with the load (contactor, starter,
relay, etc) and acts as a simple switch, operated by liquid presence.
Squitch may also be interfaced directly to a PLC using simple
instrument cable. For this purpose, a PLC terminal is provided
in the housing.
Squitch
may be set on site with a selector to energise on either wet or
dry. When squitch is "off" a small current of less than 4.5mA
is drawn through a window in the end cover and will flash approximately
once per second. When squitch is "on", the full load current (0.5A
max.) flows, and the LED is on constantly. In this way there is
an indication that squitch is "alive and well". Squitch may be
installed in any position in the vessel.
Application
Petroleum
processing - Fuel, lubricating oils, hydraulics fluids, liquid
petroleum derivatives, crude oil, fuel - water interfaces.
Chemical processing - Acids, alkalis, ammonia, paints, lacquer,
waxes, peroxides, alcohol, slurries, printing inks
Food processing - Beverages, fruit juices, cooking oils,
molasses, liquids with solids.
Pharmaceutical and cosmetic -Liquids, emulsions, lotions,
solutions.
Marine operation -Fuel oil, hydraulic fluid, bilge level
alarms, seawater, coolant, condensate levels, cargo levels.
Reactor operation - Level control, alarm signalling.
Cryogenic liquids - Liquid methane, nitrogen, oxygen, etc.
Water industry - Flood control, reservoir levels, sludge
blanket detection, sewage sump control.
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