Time Electronics

1021 Milliamp Source with Null Indicator

Time Electronics Ltd, Unit 5, TON Business Park, 2-8 Morley Road, Tonbridge, Kent, TN9 1RA, United Kingdom

T: +44 (0) 1732 355993 | F: +44 (0) 1732 350198 | mail@timeelectronics.co.uk | www.timeelectronics.com

Description

The 1021 is a precision DC current calibrator suitable for sourcing applications

from micro-amp levels up to 100 mA. Three output ranges are available;

0 to 99.99 mA in 10 μA steps, 0 to 9.999 mA in 1 μA steps, and 0 to 999.9 μA

in 0.1 μA steps. Output voltage is adjustable between 14 and 40 volts, with a

maximum output power of 2.4 watts.

High accuracy and long term stability make the 1021 suitable for a wide range

of testing workload. In process applications it can be used to calibrate and

verify current sensitive transducers and their associated indicating and

recording devices. For the semiconductor industry the unit can be used as a

constant current source for parameter measurements. It can also be used to

measure DC current accurately by using the null facility to back off the unknown

current. Resolution of 1 μA is possible.

Operation of the 1021 is fast and simple operation. The user needs to only to

switch on, check the battery condition, select the range, and set the required

current using the thumbwheel switches. Useful features include an LED voltage

limit indicator, that shows when the 1021 is unable to supply sufficient drive

voltage to maintain the set output current. The instrument is also short circuit

and overload protected.

Safety terminals: Fitted as standard and fully compatible with 4 mm shrouded

plugs, as well as standard plugs, bare wires, and spade terminals.

Portable operation: Rechargeable batteries and mains charger are

supplied with the unit as standard. Complete recharge time is 10 to 12

hours although sufficient charge for a few hours operation can be obtained

with only 30 minutes charge. Full charge allows 10 hours typical use. The

battery level is monitored by an LED indicator on the top of the unit.

Added protection: The 1021 comes fitted with an ergonomic rubber cover

providing increased protection and durability. It has a textured grip for

comfortable handling and openings at the top and bottom to allow access to

the battery meter and a position to place labels. It is easy to remove if the user

prefers a stand-alone unit or to house the 1021 in the optional 9027 carry case.

Features

• 0 to 100 mA output in 3 ranges

• Accuracy 0.02 %

• 25 ppm/hr stability

• Up to 40 V output drive

• Short circuit and overload protected

• Safety terminals

• Removable protective cover

• Supplied with rechargeable batteries

• 10 hours typical use between charges

• Optional carry case