A precision DC current source for calibration and test applications from nanoamp levels to 100 mA. The 1024 is a solid state battery powered instrument which is easily portable and convenient for laboratory, field, or industrial use. It incorporates many of the well-proven circuit techniques of the Time Electronics 1010 DC voltage calibrator.
The null balance system enables the 1024 to be used for making accurate current measurement in addition to its basic function
as a calibrator. Operation is by backing the current source output against the current to be measured, with the difference being displayed on a sensitive centre zone null meter. At the null point, there is no voltage drop across the 1024.
Stability and Temperature Coefficient: The 1024 employs a precision aged reference diode as a basic reference source. Excellent zero stability is ensured by the use of a high performance FET chopper amplifier system.
Precision metal film resistors with temperature coefficients of less than 10 ppm per °C are used to maintain the accuracy and stability of the initial calibration.
0 to 100 mA output in 5 ranges
10 ppm/hr stability
Up to 15 V output drive
Null measuring facility
Battery or mains operation
Optional carry case
The calibrator connections are via safety terminals that are compatible with standard plugs, 4 mm shrouded plugs, bare wires, and spade terminals.
These terminals are specifically designed with safety features including limited opening distance and a raised flange around the metal connection surface. This ensures that the clearances are sufficient to make the exposed metal parts touch-proof.
The 1024 can be powered from mains supply or by the internal rechargeable battery pack. When the calibrator is plugged into the mains supply the internal batteries will automatically start to recharge.
If unplugged from the mains during operation the internal batteries will continue to power the instrument. Full charge allows 12 hours typical use. An LED indicator on the front panel displays the battery condition.
The 1024 can be used for calibration and testing of current sensitive transducers and their associated indicating and recording devices. Perform verification and linearity tests on digital and electronic current meters.
The 1024 covers many applications in a variety of semiconductor measurements including forward voltage drops, zener diode characteristics and temperature coefficients, transistor gains (hFE) and saturation voltages.
0 to 100 mA in 5 ranges:
0 to 99.999 mA in 1 μA steps
0 to 9.9999 mA in 100 nA steps
0 to 999.99 μA in 10 nA steps
0 to 99.999 μA in 1 nA steps
0 to 9.9999 μA in 0.1 nA steps
± 0.02 % of setting + ± 0.005 % of range + ± 0.2 nA
15 V with new batteries or mains power (11 V with minimum allowable battery volts).
Load: better than 5 ppm per volt. Supply: better than 5 ppm per volt.
Positive or negative switch selected. A centre ‘off’ position provides an open circuit on the output terminals.
Out of Limit Warning
A front panel LED indicator provides warning of insufficient drive voltage.
Less than 30 ppm per °C (0°C to + 50 °C).
Less than 10 ppm per hour at constant temperature.
Less than 75 ppm per 6 months.
100 mA, 10 mA and 1 mA ranges: less than 5 ppm of full scale.
100 μA and 10 μA ranges: less than 10 ppm of full scale ± 0.1 nA.
Adjustable from ± 25 mA to ± 25 μA FSD via front panel control. Maximum resolution is 0.5 μA.
Time Electronics power unit type PU2 which is housed in the rear of the 1024. The PU2 will power the 1024 direct from the mains or an internal rechargeable battery. The battery is automatically charged when mains power is connected. Access to the power supply is from the back of instrument.
Battery Level Indicator
A front panel LED provides an indication of the battery condition.
W 217 x H 160 x D 193 mm
Leather carry case. Calibration certificates: Traceable (factory) or accredited (ISO 17025).
Country of Origin
Packed Dimensions: L 42 x W 42 x H 42 cm / Packed Weight: 5 kg