IVAC 218X, Manual

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SETUP PROCEDURE
7
Calibration Self-Check
OPERATIONAL PRECAUTIONS
Electromagnetic Compatibility
Operating the thermometer near equipment which radiates high-energy
electromagnetic and radio frequencies (electrosurgical/cauterizing
equipment, portable radios, cellular telephones, etc.) may cause false alarm
conditions. If this happens, reposition the thermometer away from the
source of interference and perform a new measurement.
Figure 2 - Instrument Start-Up by
Removing the Probe
Start-Up
The calibration check verifies that the microprocessor is able to
correctly measure resistance in the circuit, and convert that
resistance to a temperature value. When a probe is removed
from its well, the battery power is applied to the circuit. This
self-check can be verified by observing the displays as the
thermometer probe is removed from its well:
• Select and remove one probe; note an audible beep. The
instrument will be in Normal mode.
• Verify that the display briefly shows 188.8°E and all messages.
The self-check takes place during this time.
• Verify that the test display is replaced by “26.7°C”(80.0°F).
• In Monitor mode*, the message
MONITO R M O D E
will display,
and the Pulse Timer button should be released.
• If the message
FIX ME CAL
appears, the thermometer is out
of calibration and requires service.
*
To place the thermometer into Monitor mode, push and hold the PULSE TIMER
button while removing one probe from its well. The pulse timer clock wedges appear
and there is an audible beep.
INST
ALLA
TION
Install a box of 20 probe covers in the storage compartment at
the rear of the instrument. Place the carrying strap around your
neck, if desired.
With your thumb and forefinger, grasp the base of a probe and
withdraw it from the probe storage well (see Figure 2). This
action automatically turns on the instrument. Verify that all
display segments, except the pulse timer clock, momentarily
light and that the instrument beeps once. When this sequence
is complete, the instrument will display the temperature or “Lo”
if the ambient temperature is less than 26.7°C (80.0°F)
indicating the instrument is ready for use.
TEMP•PLUS II MODEL
2080A
PULSE TIMER