Vitrek 944i Dielectric Analyzer Specifications

AC DIELECTRIC MODE
AC Voltage Output
Range	Current	Accuracy
100 to 500 VAC	20 mA	0.7% of output + 7.5V
500 to 5000 VAC	35 mA	0.7% of output + 30V
Output Frequency	50Hz to 100Hz with 1Hz resolution independent of line power frequency
Output Waveform	Digitally synthesized, low distortion sinewave
AC Current Sensing (AC Leakage)
Range	Resolution	Accuracy
13.00uA	10nA	0.5% of reading + 1uA
1.300mA	1uA	0.5% of reading + 10uA
40.0mA	100uA	0.5% of reading + 500uA
Current Sensing	Resistive current (in-phase), reactive current (out-of-phase) or total current
Voltage Coefficient	100pA/V
DC DIELECTRIC MODE
DC Voltage Output
Range	Current	Accuracy
100 to 500 VDC	20mA	0.3% of output + 6V
500 to 5,000 VDC	35mA	0.3% of output + 25V
5,000 to 7,000 VDC*	5mA	0.3% of output + 75V
Requires option *DC-7
DC Voltage Output with option DC-10
500 to 10,000 VDC	5mA	1% of output + 50V
DC Current Sensing (DC Leakage)
Range	Resolution	Accuracy
1.800uA	1nA	0.4% of reading + 6nA
18.00uA	10nA	0.3% of reading + 30nA
1.800mA	1uA	0.3% of reading + 30uA
40.0mA	10uA	0.3% of reading + 300uA
Voltage Coefficient	15pA/V
HIGH RESISTANCE MODE (Insulation Resistance)
Resistance Range	Minimum Resistance	Test Voltage
2.6 GΩ	100 KΩ	100 VDC
13 GΩ	500 KΩ	500 VDC
26 GΩ	1 MΩ	1,000 VDC
65 GΩ	2.5 MΩ	2,500 VDC
Accuracy	Combined uncertainty of DC Voltage Output + Current Measurement Accuracy
LOW RESISTANCE MODE (Earth Continuity)
Full Scale	8.5 ohms maximum including lead resistance
Resolution	1 milli-ohms
Test Current	50 mA
Lead Compensation	Automatic offset circuit "nulls" out two wire lead resistance
Accuracy	0.3% of reading + 30mΩ (up to 5Ω)
General Specifications
Arc Detection Sensitivity	User selectable 3 microseconds to 30 microseconds
Display	40 character alphanumeric vacuum fluorescent
High Voltage Indicator	Lightning bolt illuminated by independent output voltage monitor. Audible alarm sounds prior to voltage output.
Voltage Resolution	1 volt AC or DC
Dwell Time Accuracy	+2 Seconds/minute, -500mS/minute
Slew Rate	10 Volts/second to 1999 volts/second, user selectable
Limits	Test automatically aborts when digitally stored minimum or maximum limit is exceeded.
Remote Interface Option "IF-4"	GPIB - IEE-488.2 Subset compatible RS232C - 1200, 2400, 4800, 9600 Baud rate selectable Parallel - IBM/Centronics compatible VICL - Vitrek auxiliary unit control loop
Accuracy	Stated specifications are bipolar and apply for one year within "5EC from calibration temperature (20 to 25EC).
Temperature Coefficient	0.1 times stated accuracy per EC beyond calibration temperature window
Calibration	Traceable to the National Institute of Standards and Technology (NIST). Automatic "Covers on" calibration, internal or external. Calibration constants stored in non-volatile memory.
Warm up Time	30 minutes
Operating Temperature	0°C to 50°C
Humidity	90% RH, 0° to 40° C
Power	115/230 VAC + 10%, 350 VA Max.
Dimensions	89mm H x 432mm W x 457mm D (3.5" H x 17" W x 18" D
Weight	14Kg (34 lb.) Net / 18Kg (40 lb.) shipping