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The probe comprises of a sense electrode, electrically isolated from the metallic tank by means of a suitable insulator. The sense electrode and the vessel wall serve as the two electrodes of a capacitor with the service material as the dielectric. A change in material level causes a change in the dielectric, which in turn causes the value of this tank capacitor to change.


Suitable for conductive and non-conductive application media

Power Consumption – Less 05 VA

Ignore build-up of material on vessel wall

Power Supply – 24 V DC, 110 V AC, 220 V AC, 230 V AC & Universal (90-260 V AC)

High temperature durability (Up to 250°C and 600°C for non-conductive liquids)

Mechanical Specifications

Electrical Specifications

Probe Length

Rod Probes: 50 mm – up to 3000 mm

Rope Probes: Extend up to 400 mm to 12000 mm


W: Weatherproof

P5:IP-65 Weatherproof housing

FA:Flame-proof for Gas Groups IIA and IIB


Integral type (Electronics Integral with probe)

Remote type (Electronic separated by a 3 core ordinary cable)

Process Connection (Mounting Arrangement)

Threaded Mounting: 1, 1-1/2”, 2” BSP / NPT

Flanged Mounting: As per specification

Tri-clover (As per specifications)

SMS union coupling type





Wetted Parts and Mounting Material

S4: SS-304

S6: SS-316

SL: SS 316L

Process Temperature

A (Ambient): below 100°C

H1 (High temperature): up to 150°C)

H2 (High temperature): up to 250°C

H3 (High temperature): up to 600°C

Input power supply & Outputs

SLC 122/ 130: Single SPDT with (90-260 V AC) / 24 V DC

SLC 222/ 230: Double SPDT with (90-260 V AC) / 24 V DC

SLC 322/330: Single SPDT & Time Delay with (90-260 V AC) / 24 V DC

SLC 622/630: Double SPDT & Time Delay with (90-260 V AC) / 24 V DC

SLC 822: Double SPDT, Time Delay & two channels with (90-260 V AC) / 24 V DC

SLC 922: Three SPDT, Time Delay & three channels with (90-260 V AC) / 24 V DC

SLC 830: Double SPDT, Time Delay & two channels with 24 V DC

Power Consumption

05 VA

Fail-safe Setting

Field selectable (through toggle switch)

Open: Fail-safe High, Close: Fail-safe Low

Response Time

0.5 – 2 Sec

Time Delay Settings

Cover and Uncover Delay: 0.5s to 60s, through potentio meter

Sensitivity Setting

Field Selectable (through toggle switches)

Resonant Frequency

500 KHz

Applications Specifications

Application Material For all Industries requiring level limit detection in Liquid Material Handling such as:








Switching Indication

2 LED’s / Dot / Bar type display

Red: Alarm, Yellow: Sensing, Green: Normal