Valhalla Alpha 4314 Low Ohms Digital Igniter Tester Features Include:

The Alpha 4314 Low Ohms Digital Igniter Tester is a portable digital ohmmeter which has been specifically designed for ultra-safe low resistance testing on explosive devices (i.e. squibs, detonators). This is the first model of the 4314 Series Igniter Testers that features a 2Ohm Range with a resolution of 100uA without compromising the Low Fail Safe and Test Currents. This Model was especially designed to replace the Model 4650A no longer in production. Many versions of the 4314 series have had the unit's circuitry reviewed and approved by a U.S. Government Safety Board as well as most branches of the armed forces for specific military programs (i.e. Cruise Missile).

Designed with Life Protecting Safety in Mind

There are a variety of critical military, aerospace and industrial applications which utilize squibs and other blasting devices. In each case, it is extremely important that these devices detonate when required. It is equally important that these devices do not detonate while being tested for continuity integrity. To this end, Valhalla equips each instrument with redundant, dual fail-safe current limiting network circuitry to insure that the instrument test currents cannot exceed the specified amount. Even in the unlikely event of a worst case component failure, the output current limiting network is still in effect. To prove that this level of safety is intact in every unit we ship, a worst case component failure is simulated during final test with the resulting output current flow is recorded and that data is attached to the unit.

The Alpha 4314 Low Ohms utilizes a four-wire Kelvin input configuration to eliminate lead wire length and lead contact resistance errors. The units are battery powered with a heavy duty rechargable Ni-Cad pack for portability and line isolation purposes. An AC adaptor battery charger is standard. For added convenience and safety, the Alpha 4314 feature an internal switching configuration which automatically disables the battery charging circuit when in the operate mode. Alternately, all power is removed from the output circuitry when in the off/charging mode.

As with all Valhalla Digital Ohmmeters and Igniter Testers, the Alpha 4314 is available with a host of 4-wire probes and cable sets. Consult the end of this section for complete information on Options and Accessories.

BCD Capability

For applications requiring data output the Alpha 4314 is available with "BCD". The "BCD" talk only interface is fully compatible with our 1248 Dual Limit Comparator. Notice that the BCD Option does not interfere or change the FailSafe feature of the instrument.
Option BCD Data Sheet

Range Specifications

• Accuracy: (180 days 25°C ± 10°C)
  ±0.03% of reading ±0.02% of range
• Display: 4 1/2 digit (19999) L.E.D. - 20,000 counts
• Terminal Configuration: Four-wire Kelvin
• Overload Indication: Display flashes
• Operating Temperature Range: 0°C to 50°C
• Temperature Coefficient: ±.002% per °C (from 0°C to 15°C and 35°C to 50°C)
• Conversion Rate: 3 per second
• Power: Rechargable Ni-Cad batteries & charger (115 VAC 50-60 Hz)
• Size: 27cm/11" D x 9.5cm/24" W x 8cm/3" H
• Weight: 1.3 KG/3lbs NET 3 KG/6 lbs shipping