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Presence detection using switch probes

A switching probe is conductively connected to the barrel, spring and receptacle while the terminal is insulated from these components and is designed primarily for detecting the absence or presence of non-conductive features, where a normal contact probe can not be used.

Typical Uses


  • Test/harness connector contacts 'in-place' switch
  • UUT 'in-place' and 'start test' switch
  • Cycle counter 'actuation' switch in vacuum test fixtures
  • Presence detection of a fitted part

Tip: Prevent damage to the insulator on the tail by using heat sinking pliers during any soldering.

PS6 Series

Test Probe Specification

Test centres
4.5mm
Full travel (+/- .25mm)
5.2mm
Recommended travel
4.15mm
Switch point (+/- .30mm)
1.7mm
Electrical (Non-conductive, DC)
Current rating (max)
5 Amp
Average switch resistance
50m
Spring force
At switch point
70g
At recommended travel
230g

Receptacle Specification

Solder type, press fit 3.0mm drill is most commonly used:
Drill part no. DS6
SOLDER OTHER WIRE TO RECEPTACLE SIDE

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PS3 Series

Test Probe Specification

Test centres
2.54mm
Full travel (+/- .25mm)
5mm
Recommended travel
4mm
Switch point (+/- .30mm)
1.5mm
Electrical (Non-conductive, DC)
Current rating (max)
1 Amp
Average switch resistance
50m
Spring force
PS3HS
PS3HX
At switch point
45g
90g
At recommended travel
150g
300g

Receptacle Specification

Solder type, Press fit 2.0mm drill is most commonly used. Drill Part No: DS3.

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PS8 Series

A large switching probe for presence detection use. It has a long travel and is ideal for more robust applications. Can be used with or without its receptacle.

Test Probe Specification

Test centres
7.5mm
Full travel (+/- .25mm)
14.0mm
Recommended full travel
11.0mm
Switch point
2.0mm +/-0.2
Electrical (Non-conductive, DC)
Current rating (max)
5 Amps
Spring force
At switch point
260g
At recommended travel
520g
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PS9 Series

A large switching probe with an extra long travel for presence detection use; ideal for more robust applications. Can be used with or without its receptacle.

Test Probe Specification

Test centres
10mm
Full travel (+/- .25mm)
16.0mm
Recommended full travel
13.0mm
Switch point
2.0mm +/-0.2
Electrical (Non-conductive, DC)
Current rating (max)
5 Amps
Spring force
At switch point
290g
At recommended travel
640g

Receptacle Specification

Solder type press fit. Drill hole size 7.99mm; without receptacle 7.00mm

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PSNO5 Series

Push to make switching probe

Test Probe Specification

Test centres
3mm
Full travel (+/- .25mm)
4mm
Recommended full travel
2mm
Switch point
0.7mm
Electrical (Non-conductive, DC)
Current rating (max)
3 Amps
Spring force
At switch point
50g

Recepatacle Specification

Solder type press fit. Drill hole size 7.99mm; without receptacle 7.00m


PSNO7 Series

Switching probe with option for push to make or push to break

Test Probe Specification

Test centres
5mm
Full travel (+/- .25mm)
4mm
Recommended full travel
1.5mm
Switch point
0.7mm
Electrical (Non-conductive, DC)
Current rating (max)
3 Amps
Spring force
At switch point
50g

Recepatacle Specifiation

Solder type press fit. Drill hole size 7.99mm; without receptacle 7.00m