美国omega LVU-303超声波液位变送器 美国omega
三线超声波液位变送器
LVU-301, LVU-303
三线超声波液位变送器
LVU-301, LVU-303:三线超声波液位变送器
LVU-301
8° Beam Allows Application in Restricted Environments
All Plastic C***truction
LED Digital Display Indicates Level in Inches or Centimeters
Push Button Calibration For All User Set Points
Built-in 10A Relay May Be Configured For Alarm or Automatic Fill/Empty Operati***
Fail-Safe Relay Logic Provides Echo and Power Loss Safety
The three-wire ultrasonic level tran***itter is the compact solution for non-contact continuous level measurement in process vessels, storage tanks and open channels. The tran***itter also features a built-in 10A relay which can be configured as an alarm on a single set point or latched on two different set points for automatic fill or empty operati***. Industrial and municipal liquid examples include sodium hydroxide, wastewater, resin, wax, liquor and bleach. An ultrasonic sound w***e is pulsed eight times per second from the base of the transducer. The sound w***e reflects against the process medium below and returns to the transducer. The microprocessor based electronics measure the time of flight between the sound generation and receipt, and translates this figure into the distance between the tran***itter and process medium below.
The surface of the level being measured must be free of fumes, vapors, foam and the surface must be flat; the signal may be lost if any of these conditi*** are present.
SPECIFICATI***
Range: 0.5 to 24.5 feet
Accuracy: &plu***n; 0.25% of span
Resolution: 0.125” (3 mm)
Frequency: 50 kHz
Pulse rate: 8 pulses/second
Blocking distance: 6" minimum
Display type: 4 segment LED
Display units: Inch / cm
Supply voltage: 14-36 Vdc
C***umption: 200 mA
Current flow: Source / sink
Signal output: 4-20 mA, 12-36 Vdc
Signal ***eraging: Fast / slow
Calibration: Push button
Relay current: 10 amp
Relay output: 250 VAC, 10A, 1/2 hp, SPDT
Relay indication: ON / OFF status
Contact resistance: 30 milli?
Fail-safe diagnostic: Relay reverts to safe position
Temperature rating: -40 to 60°C, (-40 to 140°F)
Temp. compensation: Automatic over entire range
Pressure rating: 30 psi @ 25 °C., derated @1.667 psi per °C. above 25 °C.
Enclosure rating: NEMA 4X / IP65
Enclosure material: Polypropylene
Transducer material: PVDF
Mounting threads: 2 NPT
产品型号 产品描述
Tran***itters
LVU-301 Ultrasonic Three-Wire Tran***itter,Sinking (4-20 mA)
LVU-303 Ultrasonic Three-Wire Tran***itter, Sourcing (4-20 mA)
Accessories
LVCN-51 Continuous Relay Controller with LED Display
DP24-E 1/8 DIN Panel Meter
TX4-100 Sensor Wire 100 FT Spool
注释: Comes complete with operator's manual.
The CE approved configuration complies with EN50082-2 immunity, EN55011 emission and EN 61010-1 safety standa***.
The sourcing tran***itter provides internal 4-20 mA excitation and should be used with a sinking device.
The tran***itter with sinking output requires external excitation or should be used with a sourcing device, such as the LVCN-51 continuous relay controller.
(OPTI*** SHOWN IN THIS "NOTE" ABOVE ARE PRICED IN US$)
美国omega LVU-303超声波液位变送器 美国omega
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