QT25

Qmax QT25 - An Unique Low Cost Short Locator

FEATURES

• QT25 uses a unique method to detect exact PCB short circuit locations and also pinpoint
  the shorted components/tracks. Ideally PCB tracks are suppose to have zero resistance,
  but in actual conditions they have small resistance. The exact location of the short is
  where the instrument reads the lowest value of resistance and this resistance could be
  detected with a sensitive instrument like QT25, even in power planes.
• QT25 is designed to apply a drive voltage of less than 200 millivolts, while detecting
  shorts in the populated PCBs, so as to avoid turning on the semiconductor devices
  inside the circuit, which could lead to misleading results.
• The system comes with 2 sharp probes to poke through the insulation or solder mask
  in order to make a good contact.
• QT25 uses 4 wire measurement technique for accuracy thereby eliminating the need
  to care about the residual probe resistance.
• QT25 can also be used in measuring the contact resistance of switches and relays in
  its milli-ohm mode.
• There is a composite ‘16 character alpha numeric backlit LCD display’ to show the
  Resistance range selected, Offset indication, Resistance value, and also the Units.
• Resistance dependent, modulated frequency audio tone output (whose pitch
  increases with decreasing resistance value) is also provided.

SPECIFICATIONS

• Resistance Range - 200 milli-ohms     -   (resolution of 100 micro ohms)
                                  2 ohms             -   ( +/– 5% accuracy)
                              200 ohms             -   ( +/– 5% accuracy)
• Digital Offset capacity upto 200 ohms in ohm range
• Character Alphanumeric display to indicate modes and measurements
• 4 wire probe for resistance measurement
• Sharp probes to poke through insulation or solder mask, for accurate measurement
• Resistance dependent, modulated frequency audio tone indication
• Drive Voltage less than 200mV, to avoid turning on semiconductor devices in circuit.
• Size : 245 (W) x 65 (H) x 180 (D)
• Weight : 1.8 Kg
• Power : 10 watts @ 110/220 volts max.

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