UEi Test Instruments DL235 - Manual (Page 4)

33. AC: Alternating current or voltage.
34. : A u t o m a t i cally indicate negative digital displays.
35. Auto: Displayed when autoranging controls bar graph scale (0 to
40A scale, or 0 to 400A scale) and controls position of decimal
point on digital display.
36. Power Lock: Displayed when the “A U TO P O W ER OFF” mode of
the meter has been disabled.
37. Beeper: Beeps for push-button operation or current overload.
38. OFL: O v e r f l ow indica t i o n .
Position the conductor within the jaws at the intersection of the
i n d i cated marks as much as possible in order to meet this meter’s
a c c u ra cy specifica t i o n s .
If the conductor is positioned elsewhere within the jaws, the max i m u m
additional error resulted is 1.5 percent.
Operating Instructions
Power Up/Self Test
Press and hold the “ON/OFF” push-button in order to power up and
initiate self test (Fig 1). This meter beeps and all LCD segments will turn
on (some segments have nothing to do with this meter) as part of a
self-test routine. Observe a bar graph pointer blinks to indicate the
battery condition while still pressing the “ON/OFF” push-button. The
“Off-Scale” arrow blinks for a battery life in excess of 40 hours and a
corresponding bar graph pointer blinks for a battery life of less than
40 hours. Read the scale as 0 to 40 hours for this battery test. A
pointer under the 3 (6 is not displayed) on the scale, for example,
represents approximately 30 hours of remaining battery life (Fig 1).
Release the “ON/OFF” push-button to initialize this meter.
Replace the battery before using this meter when the battery test gives
a reading of only a few hours or when the low-battery indicator is
displayed on the digital display. If the meter does not turn on, the
battery is missing or worn out. Replace battery.
This meter shuts OFF after 10 minutes if no push-button is pressed, even
if it is making a measurement. To disable the auto power off, press the
“ON/OFF” push-button ( is displayed), when the “ON/OFF”
pressed again , the meter turns OFF.
To use in manual range, press the “RANGE” push-button. Press again
for 2 seconds to return to autoranging mode.
The auto power off feature is disabled in “RECORD” mode.
Measuring AC Amperes
When the meter is turned on, it defaults in the AC amperes mode with
250-ms measurement intervals (AC displayed) and autoranging mode
(AUTO displayed), which automatically selects the proper range for both
the bar scale and the digital display. Press the “RANGE” push-button to
select a fixed scale instead of autoranging. Observe that each press
alternates between the 40A and 400A scales and “AUTO” is no longer
displayed. When the reading is beyond the limits of the digital display,
for example, 40A on a 40A scale, “OFL” appears on the digital display.
Press the “RANGE” push-button for 2 seconds and then release in
order to return to autoranging mode. This meter acknowledges with a
beep sound and displays “AUTO” (Fig 2).
Measuring DC Amperes
Press the “AC/DC” push-button to select the DC amperes measurement
mode (AC disappears on the LCD), but the meter is still in the autora n g i n g
mode (AUTO displayed), unless you press the “RA NGE” push-button to
enter into the manual ranging mode.
When the DC amperes measurement mode is entered, the display reads
a non-zero DC amperes (positive or negative) value due to the presence
of the Earth’s magnetism. This value is variable according to the location
measuring DC amperes (Fig 3).
DL235-MAN P. 3
(Fig 2)
(Fig 3)
POWER
LOCK
(Fig 1)
MARK
MARK MARK
CONDUCTOR
HAND GUARD