Alpha 4314 Low Ohms

$4,395$4,890

Safely test explosive devices with the Alpha 4314 Low Ohms digital igniter tester, developed with fail-safe, current-limiting circuitry for applications involving squibs, combustibles, and other blasting devices.

  • Ultra-Safe Resistance Measurements
  • Ultra Fail Safe Circuitry Limits Current
  • 2 Ohm Range for Low Resistance Applications
  • 100µΩ Resolution to 2kΩ- 4 Ranges
  • Rechargeable Battery Operated
  • Safe Tester for Explosive Devices
  • Safety Approval by US Government/Military
  • Certificate of N.I.S.T. traceability included at no extra charge
  • Now Available with RS-232 Interface
  • Alpha 4314 Low Ohms Data Sheet
  • Alpha 4314 Low Ohms Manual
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Ultra-Safe Low-Resistance Testing

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 rechargeable 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.

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. Option RS-232 Data Sheet

Range Specifications

Range (ohms)

2

20

200

2k

Resolution (ohms)

100u

1m

10m

100m

Test Current (A)

10mA

1m

100u

10u

FailSafe Current (A)

16m

1.8m

180u

18u

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Range Selection, Resolution, and Accuracy

While standard version of the Alpha 4314 features 20, 200, 2k, and 20k Ohm ranges, it can be configured to meet your needs. The table below lists the nine possible ranges that can be installed in the Alpha 4314.  When ordering, simply specify the four range numbers you want to be installed in your instrument.

The 20MΩ and 100MΩ ranges are only available on the standard current configuration.

Range # 0 1 2 3 4 5 6 7 8
Range (ohms) 2 20 200 2k 20k 200k 2M 20M 100M
Resolution (ohms) 100u 1m 10m 100m 1 10 100 1k 10k
  Standard Current (Alpha 4314)
Test Current (A) 10mA 10mA 1m 100u 10u 1u 100n 10n 1n
Fail-Safe Current (A) 16m 16m 1.8m 180u 18u 1.8u 180n 18n 1.8n
  Reduced Current (Alpha 4314-KRC)
Test Current (A) 5mA 5mA 0.5m 50u 5u .5u 50n X X
Fail-Safe Current (A) 8m 8m .9m 90u 9u .9u 90n X X

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.

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.

Product Specifications

Weight 48 lbs
Dimensions 11 × 9.5 × 3 in
Accuracy

±0.03% of reading ±0.02% of range (2 ohm – 20k ohm ranges)
±0.05% of reading ±0.05% of range (200k ohm range)
± 1.0% of reading ±0.2% of range (2M ohm range)
±2% of reading ±0.2% of range (20M ohm range)
±3% of reading ±1% of range (200M ohm range)

Display Type

Standard or Reduced Current

Reduced Current

Terminal Configuration

4-Wire Kelvin

Overload Indication

Display flashes

Conversion Rate

3 Readings/Second

Temperature Coefficient

±0.002% per °C (from 0°C-15°C and 35°C-50°C)

Current Source Compl Voltage

Clamped at 1.6V

Operating Temperature Range

0°C to 50°C

Storage Temperature Range

-10°C to 70°C

Test Current

5mA, 5mA, 0.5m, 50u, 5u, 0.5u, 50n

Resolution

100 micro-ohm resolution to 200M ohms

Battery Charger

6VDC @ 300mA nominal

Battery Type

Rechargeable Nickel-Metal Hydride (NiMH)

Fail-Safe Current

8m, 8m, 0.9m, 90u, 9u, 0.9u, 90n (Reduced)

Certificate of Calibration

Included

Certificate Type

Z540

Certifications

Eastern and Western Range (EWR) 127-1, Section 3.13.8.1-2
Military Standard 810: Method 511 Safe for Explosive and Volatile Atmospheres
US Safety Board and Armed Forces (DoD)

Interfaces

Binary Coded Display (BCD)
None
RS-232

NIST Traceable

Yes

Portable

Yes

Power

Battery

Rack Mount Compatible?

Yes

Ranges

2
20
200
200k
20k
2k
2M

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