AEMC CA863 Operating Manual

K-THERMOMETER

(K-type thermocouple - Dual input)

MODEL CA863

USER MANUAL

The AEMC® Model CA863 is a portable, easy-to-use, compact-sized, dual input digital
thermometer, designed for simple one-hand operation. It uses two external K-type
thermocouples with standard miniature connectors as sensors. The thermometer is
supplied with a protective holster and two K-type thermocouples. The Model CA863 also
features a back-light LCD display, a data HOLD function, and a MAX recording function.

WARNING

• Thermometers are not designed to work on live electrical samples.

• Do not use this instrument when voltages at the sample point exceed

24VDC or 24Vrms.

• Do not make temperature measurement in microwave ovens. Leaking
microwaves may result in burns and serious injuries.

• Repeated sharp flexing can cause the thermocouple leads to break. To
prolong sensor life, avoid sharp bends in the thermocouple, especially
near the connector.

This symbol signifies CAUTION! and requests that the user refer to the user
manual before using the instrument.

PUSH BUTTONS

Center (Yellow) Function Switch:

Slide the center button to turn ON the Thermometer and select the 0.1° or 1° setting. Slide
the button to OFF after use.

Back-Light

• Press the

• Press the

• Press the

temperature scale °C or °F is displayed in the lower right hand side corner of the
display.

HOLD/MAX Button:

• Pressing the HOLD/MAX button once will initiate the data HOLD mode. The "HOLD"
annunciator appears in the upper right hand corner of the display.

• The Hold button “freezes” the reading and stops all further measurement updates.

• Pressing the HOLD/MAX button again will initiate the MAX mode. The "MAX"

annunciator appears in the upper right hand corner of the display.

• In the MAX mode, the thermometer automatically displays and updates the maximum
absolute values.

• To exit the MAX mode, press the MAX button again. The Model CA863 will be in a
normal (non MAX or HOLD) mode at power up.

and °C/°F Button:

button to turn the Back-Light ON.

button again to turn the Back-Light OFF.

button for 2 seconds to change the temperatu re scale to °C or °F. The

T1/T2 - T Button:
 Pressing the T1/T2 - T Button selects in sequence T1, T2 and T. T is the

temperature difference T2- T1.

 The actual measurement T1, T2, T2-T1 is displayed in the upper left hand corner of the

LCD.

OPERATING INSTRUCTIONS

OPERATION

1. Connect the K-type thermocouples to the instrument input.

2. Put the thermocouples near or on the sample tested.

3. Slide the function switch to the appropriate range or, if in doubt, select the highest

setting (1°). If the measured temperature is below 200, the higher resolution range 0.1
can be selected, if needed.

4. The Model CA863 may be in degrees Celsius (°C) at po wer-up. Press the back-light

button
desired. The selected setting will remain for the next use.

5. Thermocouples need a certain time to respond. Take the reading when the

measurement has stabilized.

6. The HOLD button will freeze the measurement in the display, and will not update until

released.

7. When finished, remove the thermocouple from the sample, unplug the thermocouple

from the meter and slide the switch to OFF.

for more than 2 seconds to toggle over into degrees Fahrenheit (°F), if

SPECIFICATIONS

ELECTRICAL
Temperature Scale:

Celsius (°C) or Fahrenheit (°F) user-selectable

Measurement Range (Dual Input):

-58°F to 1999°F (-50°C to 1300°C)

Resolution:

0.1°F/°C or 1°F/°C

Accuracy (meter):

-58°F to 1999°F: ± 0.3% rdg + 2°F*

-50°C to 1000°C: ± 0.3% rdg + 1°C*

1000°C to 1300°C: ± 0.5% rdg + 1°C*
*plus thermocouple

Temperature Coefficient:

0.1 times the applicable accuracy specification

per °C from 0°C to 18°C and 28°C to 50°C.