Alpha 4314 Digital Igniter Tester

From: $3,595

  • Standard test and fail-safe currents
  • 100 micro-ohm resolution up to 200M ohms
  • Configurable with 4 or 9 Ranges
  • NIST-traceable certificate of calibration included
  • Portable with rechargeable batteries
  • Now available with RS-232 interface
  • Alpha 4314 Data Sheet & Alpha 4314 Manual

The Alpha 4314 includes Option K 4-wire Kelvin Lead Set ($250 value), battery charger or AC power, certificate of calibration, operation manual, and a 13-month warranty.

  • The Alpha 4314 can be configured with 4 ranges to best meet the needs of your application.  Make your selection below.

    Enhance the connectivity of the Alpha 4314 by adding an RS-232 or BCD interface.

    • 495 $
    • 495 $

    Choose between standard battery-power and continuous isolated AC-power.  Selecting AC-Power will remove the battery functionality.

    • 200 $

Ultra-Safe Resistance Measurement for Explosive Devices

The clear LED display makes reading test values fast and uncomplicated.
The 4-wire Kelvin connection prevents lead wire length and contact resistance errors.
The battery indicator light illuminates when the heavy duty rechargeable NiMH batteries need recharging. Battery charger included.

Designed with Fail-Safe Circuitry

Countless critical military, aerospace, and industrial applications utilize squibs and other blasting agents, and it is vital that these devices detonate precisely when required – not sooner, not later, not while testing for continuity integrity.  To guarantee both the readiness of the device and the safety of the technician or engineer, the Alpha 4314 is equipped with redundant, dual fail-safe, current-limiting network circuitry that ensures instrument test currents cannot exceed the specified amount.  To certify that this level of safety is included in your instrument, we simulate a worst-case component failure during final testing and include the resulting recorded output current flow with your order.

Even in the unlikely event of a worst case component failure, the output current limiting network is still in effect.

Accurate, Portable Precision

The Alpha 4314 KRC 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 NiMH (10Ah) pack for portability and line isolation purposes. An AC adaptor battery charger is standard. For added convenience and safety, the Alpha 4314 KRC 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 KRC 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.


The 4314 series’ circuitry has been reviewed and approved by a U.S. Government Safety Board and all branches of our armed forces for specific military programs (i.e. Cruise Missile).

General Specifications

Rng # Range Resolution Test Current Fail-Safe Current Test Current Fail-Safe Current Accuracy
0 100µΩ 10mA 16mA 5mA 8mA ± 0.03% of reading ± 0.02% of range
1 20Ω 1mΩ 10mA 16mA 5mA 8mA ± 0.03% of reading ± 0.02% of range
2 200Ω 10mΩ 1mA 1.8mA 500μA 1.8mA ± 0.03% of reading ± 0.02% of range
3 2kΩ 100mΩ 100μA 180μA 50μA 180μA ± 0.03% of reading ± 0.02% of range
4 20kΩ 10μA 18μA 5μA 18μA ± 0.03% of reading ± 0.02% of range
5 200kΩ 10Ω 1μA 1.8μA 500nA 1.8μA ± 0.05% of reading ± 0.05% of range
6 2MΩ 100Ω 100nA 180nA 50nA 180nA ± 1% of reading ± 0.2% of range
7 20MΩ 1kΩ 10nA 18nA n/a n/a ± 2% of reading ± 0.2% of range
8 200MΩ 10kΩ 1nA 1.8nA n/a n/a ± 3% of reading ± 1% of range
Alpha 4314 Alpha 4314 KRC Reduced
General Specifications Display Type 4 ½ digits LEDs (19999)
Overload Indication O.L.
Conversion Rate 3 readings per second
Terminal Configuration 4-Wire Kelvin
Current Source Compl. Voltage Clamped at 1.6V
Power Power 4 “D” Cell 1.2V recharg. NiMH Batteries 10000mAh
Battery Charger 6VDC at 300mA nominal
Temperature Temperature Coefficient ±0.002% per °C (from 0°C-15°C and 35°C-50°C)
Operating Temp. Range 0°C to 50°C
Storage Temp. Range -10°C to 70°C
Physical Specifications Width 9.5” / 24cm
Depth 11” / 27cm
Height 3” / 8cm
Weight 3 lbs / 1.3kg net; 6lbs / 3kg shipping
Accessories A Battery Charger  115Vac to 6VDC @ 300mA
HDB 4 Heavy Duty rechargeable NiMH Batteries 1.2V 10000mAH.
CC4 Carrying Case for the meter with room for the battery charger and Lead Sets
HCC Pelican 1500 Hard Carrying Case with Custom Foam for the meter, battery charger, up to 3 sets of leads and extra batteries.
R4 Standard 19″ equipment rack adaptor
Options RS232 This option provides a safety isolated RS232 Serial interface. The interface provides measurements and other information.
BCD This option provides parallel BCD data on p rear-panel 50-pin connector. All outputs are TTL comparable levels with a drive capability of 1 LS load.
AC-115 Continuous Isolated AC Power
AF-6 A 6-pin Mil-Spec circular connector (MS3112E10-6S) replaces the four-terminal banana jacks and the battery charger jack. Makes it physically impossible to simultaneously connect the AC/DC Charger while measuring with the test leads.

Available Interface Options

RS-232 Serial Interface Capability (NEW)

The interface is isolated to 2.5kV on both power and Data lines and uses iCoupler Technology. Option RS-232 provides a safe way to communicate with the Alpha 4314 via a computer or PLC and allows the transfer of single readings or continuous transmission of data. This interface is for data acquisition only and does not provide range control. See Datasheet for more details.

AC-115 Continuous Isolated AC Power

Replaces battery pack functionality with continuous isolated AC power.

BCD Capability

For applications requiring data output the Alpha 4314 is available with “BCD.”  Notice that the BCD Option does not interfere or change the FailSafe feature of the instrument.


A 6-pin Mil-SPec circular connector replaces the four-terminal banana jacks and the battery charger jack.  Makes it physically impossible to simultaneously connect the AC/DC charger while measuring with the test leads.

Accessories and Test Leads