910 Datasheet, PDF (5/8 Pages) Magnetrol International, Inc. – ECHOTEL®CONTACTULTRASOUND

940/941^{Level Switches}
Economical, very compact switches with pulsed
signal technology and tip-sensitive transducers.
High cost-benefit ratio for OEM switch users.
3/4” NPT
Fitting
Tri-Clamp
Fitting
High-Performance Ultrasound
Pulsed signal technology excels in difficult
conditions that may cause other ultrasonic
switches to falter. This technology also provides
excellent immunity from electrical noise that is
common in many industrial applications.
ANSI
Fitting
Choice of Electronics
Model 940 Relay Version offers a 1 amp
SPDT relay output.
Model 941 Current-Shift Version offers a mA
current shift output.
Suitable for SIL Loops
Safety Integrity Level (SIL) data is available for
the 940/941 switches in the form of a Failure
Modes, Effects and Diagnostic Analysis
(FMEDA) report. The Model 940 is suitable
for use in SIL 2 loops, and the Model 941 is
suitable for use in SIL 1 loops.
Model 940/941 Specifications
Liquid Level Applications
Power Supply:
12 to 35 VDC
Power Consumption: Less than 1 Watt
Signal Output (940):
SPDT relay, 1 amp @ 30 VDC, 0.5
Signal Output (941):
amp@125 VDC, 0.5 amp @150 VAC
8 mA (±1 amp) Dry Gap
16 mA (±1 amp) Wet Gap
CONTROL FUNCTIONS:
• Pump protection
Cabling:
12'' (305 mm) flying leads of
• Fill line monitoring
Repeatability:
Response Time:
18 AWG wires
0.078'' (2 mm)
0.5 second typical
• Interstitial space leak detection
• High or low level alarm
Ambient Temperature: -40° to +185° F (-40° to +85° C)
Process Temperature:
Maximum Pressure:
Ingress Protection:
-40° to +185° F (-40° to +85 °C)
2000 psig (138 bar); 1500 psig (103
bar) for transducers over 2'' (5 cm)
NEMA 4X (IP66)
OF SPECIAL INTEREST TO:
• OEM Applications
• Pharmaceutical Plants
Shock:
ANSI/ISA-S71.03 Class SA1
• Food Processors
Vibration:
ANSI/ISA-S71.03 Class VC2
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