The Valhalla Scientific Alpha 4314 Ultra Safe Digital Igniter Tester is a specialized 4-wire Kelvin ohmmeter engineered for safe, accurate testing of digital igniter functionality and integrity in explosive and volatile atmospheres. Operating with intrinsically-safe circuitry and dual fail-safe current limiting networks, the instrument prevents test currents from exceeding specified failsafe levels even under worst-case component failure. Certified for MIL-STD 810 Method 511 and approved by the US Military and Government Safety Board, it delivers precision resistance measurement across configurable ranges with 1 mΩ resolution up to 200 MΩ.
Technical Specifications
The Alpha 4314 performs 4-wire Kelvin resistance testing with configurable range selection from nine available options: 2Ω, 20Ω, 200Ω, 2kΩ, 20kΩ, 200kΩ, 2MΩ, 20MΩ, and 200MΩ. Standard configuration includes four ranges: 20Ω, 200Ω, 2kΩ, and 20kΩ. The 20MΩ and 200MΩ ranges are available only in standard current configuration.
Standard configuration test current limits to 16 mA maximum failsafe. The KRC (Reduced Current) option limits failsafe current to 8 mA maximum, accommodating sensitive detonators and explosive devices.
Standard Range Performance:
• 2Ω: 100 µΩ resolution, 10 mA test current, 16 mA failsafe, ±0.02% of reading ±0.02% of range
• 20Ω: 1 mΩ resolution, 10 mA test current, 16 mA failsafe, ±0.02% of reading ±0.02% of range
• 200Ω: 10 mΩ resolution, 1 mA test current, 1.8 mA failsafe, ±0.02% of reading ±0.02% of range
• 2kΩ: 100 mΩ resolution, 100 µA test current, 180 µA failsafe, ±0.02% of reading ±0.02% of range
• 20kΩ: 1Ω resolution, 10 µA test current, 18 µA failsafe, ±0.02% of reading ±0.02% of range
• 200kΩ: 10Ω resolution, 1 µA test current, 1.8 µA failsafe, ±0.05% of reading ±0.05% of range
• 2MΩ: 100Ω resolution, 100 nA test current, 180 nA failsafe, ±1% of reading ±0.2% of range
• 20MΩ: 1 kΩ resolution, 10 nA test current, 18 nA failsafe, ±2% of reading ±0.2% of range
• 200MΩ: 10 kΩ resolution, 1 nA test current, 1.8 nA failsafe, ±3% of reading ±1% of range
– Key Features
• Intrinsically-safe circuitry for explosive atmospheres
• Ultra fail-safe current limiting with dual network protection
• US Military approval and government safety certification
• Nine selectable ranges with 1 mΩ minimum resolution
• Low-current testing options preserve component integrity
