Valhalla Alpha 4314 Series Digital Igniter Tester Features Include:

The Alpha 4314 Digital Igniter Tester is a portable digital ohmmeter which has been specifically designed for ultra-safe resistance testing on explosive devices (i.e. squibs, detonators). The Alpha 4314 is an Upgrade of the 4314 Series and now features a new front panel, Range and Fail-Safe LED indicators, and optional BCD output that can be used to interface the instrument to the Valhalla Model 1248 Digital Dual Comparator. 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 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 Selection

The standard version of the Alpha 4314 features a 20, 200, 2k, and 20k Ohm range; however the user can choose to purchase an instrument with a different configuration. In the table below are listed the eight possible ranges that can be installed in the Alpha 4314.

When ordering, simply specify the four range numbers you perfer installed in your igniter tester

Option KRC (Reduced Current Output)

Also available is the "KRC" Models that feature a reduced Test and FailSafe Current

Customer safety engineered versions with specific ranges and fail safe current levels are available: Contact Valhalla Engineering Department for assistance.

For your convinience a table listing the old ordering format is available. Click Here to View.

• Accuracy: (180 days 25°C ± 10°C)
  ±0.03% of reading ±0.02% of range for 20 ohm through 20 Kohm ranges.
  ±0.05% of reading ±0.05% of range for 200 Kohm range.
  ± 1.0% of reading ±0.2% of range for 2 Mohm range.
  ±2% of reading ±0.2% of range for 20 Mohm range.
  ±3% of reading ±1% of range for 200 Mohm 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