Dual Laser Pointer And Backlight Button; High And Low Alarm Feature; Temperature Units; Lock Feature - Extech Instruments 42570 User Manual

Dual Laser Pointer and Backlight Button

The dual laser pointers are designed to cross at a distance of 50" (76cm). The spot size at this
distance is a 1" diameter and this is the recommended distance to target for most measurements.
To turn the lasers on/off:
1. Press and Hold the Trigger
2. While SCAN is on the display, press and release the backlight/laser button (
backlight or laser pointers will change status (On/Off). Repeat this until the desired conditions
are set. The laser icon
3. The status of the functions will be stored in memory and will remain as the default "turn-on"
condition until changed.

High and Low Alarm Feature

When either programmed alarm (high or low) point is reached the meter will alert the user via an
audible beep and a blinking LCD display icon. The alarm limit is set and the feature is
enabled/disabled using the MODE button. The setting is stored and memory and will remain as the
"turn-on" condition until changed.

Temperature Units

The temperature units can be set to °F or °C. The selection is made using the MODE button.

Lock feature

The LOCK feature disables the Auto Power Off feature for the period of use when selected. The
feature is useful for long term temperature monitoring and hands free use. The meter will revert to
auto power off if the trigger is pressed during a locked scan. The selection is made using the MODE
button. Turn on the 42570 by pressing the trigger. Once on, release the trigger and press and hold
the MODE button until the LOCK icon ( ) appears. Press the arrow key (▼) until the display says
ON. Press the trigger once and the meter will stay on until the trigger is pressed again.

Over-range Indication

If the temperature measurement exceeds the specified temperature range, the thermometer will
display dashes in place of a temperature reading.

USB Function

The supplied software and cable are used to transmitt the IR and Type K measurement data to a
PC via USB.
To Turn-on or Shut-off the USB function:
1. With MAX, MIN, DIF, or AVG displayed, press the LIGHT/LASER button until "USB" sign
appears in the right lower corner of the LCD. USB is active.
2. Press the LIGHT/LASER button again until "USB" disappears. The USB function is off.
Refer to the help file in the software for operational details.

Data Logger

Storing Data: The thermometer is capable of storing up to 100 data points.
Infrared: To store data from an infrared reading,
1. Pull and Hold the trigger
2. Press the MODE button until LOG appears in the lower left corner of the display; a log
location number will be displayed. If no temperature has been recorded in the displayed
LOG location, 4 dashes will appear in the lower right corner.
3. Aim the unit at the target area you want to record, and press the laser/backlight button. The
recorded temperature will appear in the lower right corner.
4. To select another log location, press the up and down keys.
will appear in the LCD when the laser function is enabled.
5
). Either the
42570-en-GB_V1.6 12/14