Capacitive Sensors: Probes

Sensing Area | Operating Environment | Custom Probes | Body Style/Sensing Area/Range

Probe Sensing Area

The probe sensing area determines the probe's measurement range.

Larger Sensing Area = Larger Range

Sensing areas are indicated by diameter in mm. They are combined with the Probe Body Model to form a probe model number such as C8-2.0.

Target area diameter must be 130% of the sensing area diameter or custom calibration will be required.

Probe Operating Environment

4°C-50°C; 40°F-120°F

Probes can be used at colder temperatures, including cryogenic temperatures, when condensation (frost) is prevented and the system is specially calibrated for the target temperature range.

Probes can be ordered as vacuum compatible.

Custom Probes

A large percentage of our probes are customized for unique applications. Our custom probes page has some examples.

Probe Body Styles

1 mil = 0.001"

Style	Body	Length	Cable Exit	Probe Body Model	Size	Sensing Areas - Diameters	Ranges
							CPL190 CPL290 µm mils	Compact Driver µm mils	CPA100 µm mils
3 mm Cylindrical		18 mm	Straight	C3S	3 mm	0.8 mm	25, 100 1, 4	—	100 4
		15 mm	90°	C3R		0.5 mm	10, 50, 80 0.4, 2, 3	—	50, 80 2, 3
8 mm Cylindrical		40 mm	Straight	C8	8 mm	3.2 mm	50, 500, 1250 2, 20, 50	50, 500 2, 20	500, 1250 20, 50
		18 mm	Straight	C8S
		18 mm	90°	C8R		2.0 mm	10, 50, 250, 500 0.4, 2, 10, 20	50, 250 2, 10	500, 1250 20, 50
5 mm Cylindrical		28 mm	Straight	C5	5 mm	2.0 mm	10, 50, 250, 500 0.4, 2, 10, 20	50, 250 2, 10	250, 500 10, 20
		15 mm	Straight	C5S		0.8 mm	25, 100 1, 4	—	100 4
		15 mm	90°	C5R		0.5 mm	10, 50, 80 0.4, 2, 3	—	50, 80 2, 3
3/8" Cylindrical (9.5 mm)		40 mm	Straight	C9.5	9.5 mm	5.6 mm	50, 500, 2000 2, 20, 80	50, 500 2, 20	500, 2000 20, 80
		18 mm	Straight	C9.5S
		18 mm	90°	C9.5R
Rectangular		20 mm	Straight	R20	20 mm x 20 mm	5.6 mm	50, 500, 2000 2, 20, 80	50, 500 2, 20	500, 2000 20, 80
18 mm Cylindrical		43 mm	Straight	C18	18 mm	13 mm	2000, 3200, 5000 80, 125, 200	—	5000 200
Rectangular		64 mm	Straight	R45	64 mm x 45 mm	19 mm	2500, 6000 100, 250	2500 100	6000 250
25 mm Cylindrical		43 mm	Straight	C25	25 mm with 18 mm clamping diameter	21 mm	8000, 12500 300, 500	—	12500 500