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51 & 52 Series II
Users Manual
2
Table 1. Safety Information
WWarning
A Warning identifies conditions and actions that pose hazards to the user. To avoid electrical shock or
personal injury, follow these guidelines:
• Before using the thermometer inspect the case. Do not use the thermometer if it appears damaged. Look
for cracks or missing plastic. Pay particular attention to the insulation around the connectors.
• Disconnect the thermocouple(s) from the thermometer before opening the case.
• Replace the batteries as soon as the battery indicator (
B) appears. The possibility of false readings can
lead to personal injury.
• Do not use the thermometer if it operates abnormally. Protection may be impaired. When in doubt, have the
thermometer serviced.
• Do not operate the thermometer around explosive gas, vapor, or dust.
• Do not apply more than the rated voltage, as marked on the thermometer, between the thermocouple(s), or
between any thermocouple and earth ground.