Level Sensors

Level 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.


Level Sensor Types


The 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:


Capacitive level switches


  • Capacitive 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.

Vibrating level probes


  • Vibrating 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.

Conductive level switches


  • Conductive 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.

Ultrasonic level sensors


  • Ultrasonic 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.

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รายละเอียดสินค้า / Description ราคา / 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
RS Stock No. 889-1400
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.FT10-1305
Brand :Flowline
THB7,803.72
Each
Units
Liquid and Gas Flow Switch Cable - Polypropylene 3m -40°C +60°C - 36V - 150psi Viton 1 A -
RS Stock No. 804-3850
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.7ML5501-0EA70
Brand :Siemens
THB11,487.75
Each
Units
Capacitance Switch Vertical Relay Stainless Steel - -30°C +100°C - - - 10bar - - -
RS Stock No. 386-957
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WAVES61.EXX2RA
Brand :Vega
THB15,467.59
Each
Units
Tuning Fork Horizontal Relay Aluminium/PBT - -40°C +80°C - - 1 A dc, 3 A ac 25bar - - -
RS Stock No. 740-6442
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LMT100
THB6,234.34
Each
Units
Electronic Flush Mount PNP NO/NC FPM, PA12, PEEK, Stainless Steel - 0°C +60°C - - 50 mA 16bar PEEK - -
RS Stock No. 493-6802
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SG51.XXSGBTPV
Brand :Vega
THB8,182.02
Each
Units
Tuning Fork Horizontal PNP Stainless Steel - -40°C +100°C - - 250 mA 64bar - - -
RS Stock No. 513-2427
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.7ML5610-0BD20
Brand :Siemens
THB7,556.59
Each
Units
Capacitance - Relay Polyphenylene Sulfide - -40°C +85°C - - 20 mA 10bar - - -
RS Stock No. 185-9853
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.S01DB/F68/1
Brand :Mobrey
THB14,770.83
Each
Units
Liquid Level Switch Side Mount SPST Aluminium Bronze - - +210°C - - 2 A dc, 5 A ac 18bar Non Asbestos Sheet - -
RS Stock No. 613-3415
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SN61.CXAGHKMX
Brand :Vega
THB59,527.00
Each
Units
Ultrasonic Vertical - Plastic - -40°C +80°C - - 20 mA 2bar EPDM Rubber - ATEX
RS Stock No. 794-3389
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LFP0500-A4NMB
Brand :Sick
THB16,215.00
Each
Units
Guided Radar Vertical 0-10V, 2 PNP, 4-20mA, NPN PBT - -20°C +100°C - - 100 mA 10bar PTFE - -
RS Stock No. 493-7186
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.7ML5221-1BB11
Brand :Siemens
THB25,871.79
Each
Units
Ultrasonic - - PBT - -40°C +85°C - - 20 mA - - - -
RS Stock No. 354-335
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.F0301SUS201ELECTRODE
Brand :Omron
THB770.96
Each
Units
Electrode Chassis Mount - Stainless Steel - - +70°C - - - - - - -
RS Stock No. 354-290
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PS31SUS3041000MM
Brand :Omron
THB1,060.17
1 Kit
Kit(s)
Electrode Chassis Mount - Phenol Resin, Stainless Steel - - +70°C - - - - - - -
RS Stock No. 794-3399
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LFP1000-G1NMB
Brand :Sick
THB34,733.00
Each
Units
Guided Radar Vertical 0-10 V, 4-20 mA Stainless Steel - -20°C +150°C - - 100 mA 16bar PEEK - -
RS Stock No. 889-1166
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LU10-1405
Brand :Flowline
THB11,116.01
Each
Units
Ultrasonic Level Switch Cable - Polypropylene 3m -40°C +80°C - 36V - 150psi Viton 500 mA -
RS Stock No. 122-4867
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LVL-A7-AG3A-E5PU-NA
THB6,702.44
Each
Units
Limit Switch Flush Mount PNP Stainless Steel 316L 5m -40°C +70°C - 35V 250 mA 40bar - <15 (DC-PNP) mA -
RS Stock No. 889-1378
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DS14-01
Brand :Flowline
THB14,882.36
Each
Units
Controller, Ultrasonic Level Switch Vertical - Polycarbonate 1.2m -35°C +60°C 24V 24V - 30psi Viton 1 A -
RS Stock No. 511-5157
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.VLSKB131Z
Brand :Mobrey
THB13,979.61
Each
Units
Solids Level Switch Horizontal, Vertical Relay Aluminium Alloy - -20°C +110°C - - 8 A 10bar - - -
RS Stock No. 204-6749
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.003S2
Brand :Mobrey
THB8,494.35
Each
Units
Gap Sensor Level Alarm Switch Horizontal, Vertical Relay Polyphenylene Sulfide 3m -20°C +70°C - - 1 A 5bar - - -
RS Stock No. 113-711
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.7ML5501-0EA10
Brand :Siemens
THB10,470.03
Each
Units
Capacitance Vertical - Stainless Steel 1m -30°C +100°C - - 82 mA 10bar - - -
RS Stock No. 124-0133
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LR15-0010-20
Brand :Flowline
THB91,632.66
Each
Units
Pulse Radar Level Transmitter Flange Mount - Aluminium - -60°C +150°C - 26V 20 mA 10.3bar Silicone 22.5 mA -
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