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.
|Rng #||Range||Resolution||Test Current||Fail-Safe Current||Test Current||Fail-Safe Current||Accuracy|
|0||2Ω||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||1Ω||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)|
|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.
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.