Electrostatic Sensors

Electrostatic sensors measure surface static charge in volts or kV on materials being processed — plastic film, web printing, paper, electronics assemblies — where uncontrolled charge causes product quality, dust attraction, and operator safety problems. They are sensors only; static elimination devices are listed separately.

Enicstra stocks electrostatic charge sensors from Keyence, Simco-Ion, Meech, Pulvi, and other manufacturers including current Keyence SJ-series sensors and end-of-life part numbers used in installed lines. Inventory includes contact and non-contact sensors, ranges from ±1 kV to ±20 kV and beyond, and units with analog 0–10 V or 4–20 mA outputs for connection to PLC or process controllers. Every part is bench-tested before shipment and backed by our 12-month functional warranty.

Static-elimination devices (ionizing bars, ionizing blowers, nozzles) are listed under our Static Eliminators category — this category covers measurement and detection only. If you need a specific charge sensor not shown, send the OEM part number. We typically respond to quote inquiries within 1–2 business days.

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Electrostatic Sensors

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Buying guide

Choosing Electrostatic Sensors components

Electrostatic sensor selection depends on what you're measuring, how close the sensor can get to the material, and what signal your PLC or controller expects. Choosing the wrong measurement range either saturates the sensor (above range) or loses resolution (well below range).

Specifications to confirm before ordering:

Required measurement range (±1 kV, ±5 kV, ±20 kV, or higher)
Working distance from the sensor head to the material surface
Contact versus non-contact measurement
Output signal — analog 0–10 V, 4–20 mA, RS-232/485, or relay alarm
Material being measured (film, fabric, paper, plastic part, metal)
Process speed (web speed, conveyor speed)
Environmental factors — humidity, temperature, dust
Calibration frequency and method

Application guidance:

Web printing and converting: non-contact sensors mounted above the web at the manufacturer's specified standoff
Electronics ESD monitoring: fixed-position sensors near assembly stations with alarm output to ESD warning systems
Plastic film extrusion: high-range sensors (±20 kV+) suited to charge built up during web movement
Quality control verification: handheld field meters rather than fixed sensors

Note that electrostatic sensors measure charge only — they do not eliminate it. Pair them with ionizing bars or blowers from the Static Eliminators category for closed-loop charge control.

Related categories Frequently asked questions

Can you source legacy Keyence SK-series or SJ-series electrostatic sensors?

Yes — discontinued Keyence electrostatic charge sensors are common requests. Older SK-series units along with end-of-life SJ-H, SJ-M, and SJ-F variants are often available through our supplier network. Submit the model number with a quote request.

Contact or non-contact sensor — which one do I need?

Non-contact is the default for moving webs, sheets, and most continuous-process measurement. Contact sensors are for stationary samples or batch verification. Non-contact sensors require a precise standoff distance — too close and the sensor reads field effects; too far and the resolution drops.

Do these sensors eliminate static charge?

No. Electrostatic sensors only measure and report charge. Eliminating static requires an ionizing bar, blower, or nozzle (listed under Static Eliminators). Common designs pair a sensor for monitoring with an ionizer for active charge control.

Are electrostatic sensors new, surplus, or used?

Most inventory is new-old-stock — unused, often in original packaging. Some legacy items come from tested system removals. Each product page lists condition where known.

Can you cross-reference an electrostatic sensor to a different brand?

Often, yes. Keyence, Simco-Ion, Meech, and other manufacturers cover similar ranges and output signals. Send the original part number and your application requirements, and we'll suggest compatible alternatives where direct stock isn't available.