This ESR/LOW OHMS meter
has been designed to save busy repair technicians valuable time by rapidly identifying defective electrolytic capacitors in circuit. Many owners find that it will pay for itself within a week, sometimes even in one difficult job.
The new meter is housed in a professional, low-profile, screw-less plastic case and uses a single 9-volt battery.
It is constructed from top-quality components installed on a professoinal finish printed circuit board .
Three additional improvements are a high-brightness LED display module (as specified by Bob),
improved circuit protection from charged capacitors, and improved micro-controller
firmware that provides a longer, 3-minute, automatic switch-off time.
Specifications
Measurement principle: Pulsed constant-current/voltage drop sampling.
Test signal amplitude: 500mV P-P open-circuit, <100mV
P-P at full scale.
Test lead polarity: Non-polarized.
Measurement ranges: 0,01 - 99 in 3 automatically-selected
ranges.
Resolution: 0,01 on 0,99 range, 0,1 on 9,9 range, 1 on 99
range.
Accuracy: Better than ±5%.
Reading/display rate: 4 per second.
Over-range (>99) indication: “-” symbol on left
display.
Low battery warning: Flashing “b” on right
display.
Controls: Single push button for power on/off and
zeroing.
Automatic power switch-off: After 3 minutes of
inactivity.
Power source: 9 volt alkaline battery type IEC
6LR61, NEDA1604 or 6LF22 (not supplied).
Power consumption: 120mW – 360mW typical, depending on
displayed characters.
Display: 2x high efficiency Super-Red GaAlAs Kingbright
SC56-11SWRA 7 segment LED displays.
Microcontroller: ZiLOG Z86E0412PSC 1866 running custom
firmware.
Dimensions: 131mm x 65mm x 30mm.
Weight: 97g without battery.
Test leads not supplied
