AMPTEC Research · Accessories & Test Leads
OP-403
Kelvin Mini Probe Set for every AMPTEC 620 Series instrument (igniter testers, failsafe ohmmeters)
The OP-403 is a gold-plated dual mini-probe Kelvin set for pins, terminal blocks and small contacts, sized between the standard probes and the OP-402 micro tips. It fits every AMPTEC 620 Series instrument and any other tester with banana jacks.
Overview
Leads are 48″ red and 48″ black, 1 lb, with dual banana plugs at the instrument end and dual mini-probe tips at the working end. Operating 0° to 50° C, storage -10° to 70° C. AMPTEC builds custom lengths and tip types to order; send us the spec. Evencat is the sole distributor for AMPTEC Research in Taiwan and handles selection, quotation and delivery.
Key specifications
| Category | Accessory · 620 Series accessories |
|---|---|
| Cable length | Red 48″, black 48″ |
| Weight | 1 lb |
| Instrument-end connector | Dual banana plugs |
| Probe / clip type | Dual mini-probe tips |
| Operating temperature | 0° to 50° C |
| Storage temperature | -10° to 70° C |
| Compatible instruments | All AMPTEC 620 Series instruments (igniter testers, failsafe ohmmeters) and any tester with banana jacks |
| Manufacturer | AMPTEC Research (made in USA) |
Features
Mini probe tips
Smaller dual tips than the standard probes, for Kelvin contact on wire terminals, pins and small pads.
Gold-plated contacts
Gold plating keeps contact resistance low and resists oxidation, so readings stay repeatable over years of use.
Four-wire Kelvin connection
Current and sense paths are separate at each clip or probe, so lead and contact resistance drop out of low-ohm readings.
Banana plug interface
Dual banana plugs fit every AMPTEC 620 Series unit and any other tester with banana jacks.
Custom length and tip type
AMPTEC builds other lengths and tip types to order. Tell us the application; we confirm spec and lead time with the factory.
Compatibility and applications
Compatibility
AMPTEC instruments that take the OP-403
All AMPTEC 620 Series instruments (igniter testers and failsafe ohmmeters) and any tester with banana jacks. On this site: 620A-4, 620A-4R, 620ES, 620MC, 620MG, 620BA, 620BH, 620EH, 620LM, 620RK, 620VL, 620VL-T, 620VN. Product lines: igniter testers, failsafe ohmmeters. Compatibility as stated by AMPTEC; ask Evencat if unsure.
Field
Defense, aerospace and shipboard work
Firing circuits, electro-explosive devices and bonding points vary in terminal shape and distance. The right tip and lead length make the reading repeatable.
Lab
Calibration and quality labs
A four-wire Kelvin hookup to a resistance standard or unit under test removes lead and contact resistance, keeping calibration and low-ohm checks accurate.
QA
Ordnance and pyrotechnic production QA
Lot sampling needs a fast, repeatable contact. Keep several lead sets with different tips on hand and match the terminal on each part.
Options and configuration
Tick the items you need. We compile them into a list and carry it into the quote form.
Standard (included)
Options and custom builds
Pair with an instrument
Downloads
Appearance, lead length or battery brand may differ slightly from the photo; the factory shipment governs. Custom lengths and tips on request via Evencat.
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