Making Measurements - AEMC 1822 User Manual

Thermometer data logger

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3.2. Making Measurements

If the instrument is OFF, press and hold down the

button until it turns ON. The instrument displays the current

time, followed by the measurement(s).

Model 1822

Model 1821

Wait for the display to stabilize before reading the measurement.

3.2.1. Temperature Difference (Model 1822)

When the Model 1822 is connected to two sensors, it displays both measurements, with T1 at the bottom and

T2 at the top (see the illustration above). You can display the difference between the sensor measurements by

pressing the

button. The T2 measurement is replaced by the temperature difference, labeled T1-T2. A second

press of

restores the T2 measurement.

3.2.2. MAX-MIN Mode

You can monitor the maximum and minimum measurements by pressing the MAX MIN button. This displays the

words MIN MAX at the top of the display (see below). In this mode, pressing MAX MIN once displays the

maximum value measured during the current session. A second press displays the minimum value, and a third

restores the normal display. Subsequent presses of MAX MIN repeat this cycle.

To exit MAX MIN mode, press the MAX MIN button for >2 seconds.

Note that when using the Model 1822 in MAX MIN mode, the

button is disabled.

3.2.3. HOLD

In normal operation, the display updates measurements in real time. Pressing the HOLD button "freezes" the

current measurement and prevents the display from updating. Pressing HOLD a second time "unfreezes" the

display.

Thermometer Data Logger Models 1821, 1822, 1823

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1823 1821