Level Sensors

pLevel sensors determine how full or how empty a container is. Level sensors provide an output electrical signal at predetermined levels to communicate when to open or close control valves. /p h2Level Sensor Types/h2 pThe choice of sensors is usually determined by which substance is being measured, the environment in which the sensor is to used and in which position the sensor needs to be mounted. Some of the most common level sensors are:/p h2Capacitive level switches/h2 ulliCapacitive level switches provide a basic full/empty level indication determined by the mounting position of the sensor. This type of switch is non-contact and uses a sensing field to determine liquid levels. Capacitive sensors provide accurate switching even with heavy residue build-up./li/ul h2Vibrating level probes/h2 ulliVibrating level probes use a rod or a fork that constantly produce high-frequency vibrations. When the vibrating probe comes into contact with the medium, the vibration changes and the vibrating level switch outputs a switching command. Vibrating level switches are used as overfill protection devices or low-level indicators in liquids as well as in granular and powder bulk solids./li/ul h2Conductive level switches/h2 ulliConductive level switches are sensors that use stainless steel probes with an electrical contact output to measure a specific liquid level. Used in conjunction with a level control relay to set and monitor each probe. Applications include ponds, reservoirs, sumps, pharmaceuticals, closed vessels and open tanks./li/ul h2Ultrasonic level sensors/h2 ulliUltrasonic level sensors generate ultrasonic sound pulses that are reflected by the surface of a liquid medium. The time travelled by the ultrasonic pulse is calculated by the sensor which then determines the distance of the liquid to give an accurate fill level. The ultrasonic sensor’s response is influenced by turbulence, pressure, moisture, and temperature./li/ul

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Description Price Device Type Mounting Type Switch Output Body Material Cable Length Minimum Operating Temperature Maximum Operating Temperature Maximum AC Voltage Maximum DC Voltage Maximum Current Maximum Pressure Gasket Material Current Rating Hazardous Area Certification
New
RS Stock No. 191-9475
BrandRS PRO
HK$207.00
Each
units
Float Internal NO/NC Polypropylene 1m -20°C +100°C 240V 120V 600 mA - - 600 mA -
RS Stock No. 124-0133
Mfr. Part No.LR15-0010-20
BrandFlowline
HK$17,161.45
Each
units
Pulse Radar Level Transmitter Flange Mount - Aluminium - -60°C +150°C - 26V 20 mA 10.3bar Silicone 22.5 mA -
RS Stock No. 183-7323
Mfr. Part No.GRF18S-F234LV
BrandSick
HK$823.90
Each
units
Optical Point Level Switch G1/2 Thread PNP Stainless Steel - -25°C +55°C - 30V - 16bar - 30 mA -
RS Stock No. 768-2034
Mfr. Part No.VIBS61.EEJ2RA
BrandVega
HK$5,293.09
Each
units
Sensor Cable Relay - - -40°C +150°C - - 1 A dc, 3 A ac 1.1bar - - ATEX
RS Stock No. 768-2003
Mfr. Part No.WAVES61.EXX2RC
BrandVega
HK$4,385.34
Each
units
Vibrating Level Switch Cable Relay - - -40°C +150°C - - 1 A dc, 3 A ac 1.1bar - - -
RS Stock No. 122-8433
Mfr. Part No.232180
HK$1,527.16
Each
units
Electro Optic Vertical/Horizontal NC Brass 6in -40°C +110°C - 5V - 17bar - 4 mA -
RS Stock No. 124-0137
Mfr. Part No.LU10-1305
BrandFlowline
HK$2,278.09
Each
units
Ultrasonic Level Switch Vertical - PP 3m -40°C +80°C - 36V - 10bar FKM 25 mA -
RS Stock No. 468-3457
Mfr. Part No.SN62XXAGVDMA
BrandVega
HK$15,094.44
Each
units
Ultrasonic - - Aluminium - -40°C +80°C - - 20 mA 2bar - - -
New
RS Stock No. 193-6737
Mfr. Part No.LLC102101
HK$500.90
Each
units
Liquid Level Switch Threaded Mount Transistor Polysulfone - -40°C +125°C - 15.4V 2.5 mA 7bar - 2.5 mA -
RS Stock No. 804-4109
Mfr. Part No.7MF1570-1EA01
BrandSiemens
HK$6,568.25
Each
units
Transmitter Cable - Stainless Steel 25m -10°C +80°C - - 20 mA - - - -
RS Stock No. 124-0128
Mfr. Part No.LU83-5101
BrandFlowline
HK$7,154.13
Each
units
Ultrasonic Level Transmitter Vertical - PC - -40°C +71°C - 28V 20 mA 2bar FKM - -
RS Stock No. 746-7526
Mfr. Part No.1SVR402902R0000
BrandABB
HK$151.00
Each
units
Electrode - - Steel - - - - - - - - - -
RS Stock No. 186-0287
Mfr. Part No.7ML5110-1GF07-4AF3
BrandSiemens
HK$12,045.86
Each
units
Ultrasonic - - PBT, PC - -40°C +80°C - 30V - 0.5bar - - ATEX
RS Stock No. 780-0318
Mfr. Part No.OLS200D3LSH
BrandCynergy3
HK$284.62
Each
units
Optical Sensor Chassis Mount Transistor Polysulfone 250mm -25°C +80°C - - 100 mA 7bar - - -
RS Stock No. 177-9142
Mfr. Part No.9038CG36Z20
HK$2,982.01
Each
units
Mechanical Alternator Screw In - Painted Cold-Rolled Steel - -22°F +220°F 230 (Single Phase) V, 475 (3 Phase) V 230V - - - - -
RS Stock No. 776-1601
Mfr. Part No.072.02.06
BrandFinder
HK$131.47
Each
units
Electrode Vertical Relay Stainless Steel 6m 0°C +100°C - - - - - - -
RS Stock No. 175-5066
Mfr. Part No.PFT-FRBX40SF1OSSAMSSZ
BrandSick
HK$3,485.09
Each
units
Hydrostatic Level Sensor G1 Thread 2 Wire, 4 to 20 mA Stainless Steel 1.4571 - -20°C +80°C - 30V 20 mA 0.4bar - - -
New
RS Stock No. 193-6799
Mfr. Part No.POS287413
HK$2,474.35
Each
units
Liquid Level Switch Threaded Mount PNP Stainless Steel 304 - -25°C +140°C - 30V 25 mA 80bar - 25 mA -
RS Stock No. 892-9369
Mfr. Part No.2130MA2MS1NNBA00001I1
BrandRosemount
HK$4,735.77
Each
units
Fork Level Switch Side or Top Mount - Aluminium - -40°C +180°C - - 500 mA 100bar - - -
RS Stock No. 857-3168
Mfr. Part No.CLD2EA1CM24
HK$1,998.13
Each
units
Conductive DIN Rail DPDT Relay ABS 100m -20°C +50°C - - 8 A - - - -