TPI 777 SINGLE GAS MONITOR INSTRUCTION MANUAL For use with Carbon Monoxide (CO) Read and understand instructions before use. Warning: To prevent ignition of flammable or combustible atmos- pheres, disconnect power before servicing. Warning: To reduce the risk of ignition of a flammable atmosphere, bat- teries must only be changed in an area known to be nonflammable.
Safety Information 1. IMPORTANT: Read and understand this manual prior to use. 2. IMPORTANT: CO instruments may show high readings for up to 30 minutes if taken from warm air to cold temperatures and vice-versa. For best results let them "soak" in the ambient conditions prior to use. 3.
General Description The TPI 777 is a rugged personal gas monitor. Preset alarms provide visual, audible and vibration alerts for low and high alarm conditions. Built-in "Time Weighted Average" (TWA) and "Short Term Exposure Limit" (STEL) alarms provide a greater margin of safety for the user.
PRODUCT FEATURES The 777 is made of durable plastic. The housing is protected with a rubberized material. The front of the instrument houses the sensor and sounder. Two buttons are used to operate the instrument. The left button is used for power and to select the unit of measure for temperature.
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The High Alarm activates at one second intervals. The sound, LEDs and vibration activate during an alarm. The alarm settings can be changed in set-up of the 777. The 777 is preset for the most common levels required. The preset alarm levels are shown below.
6. Standard - When the 777 is in the main display mode the CO concentration is shown in ppm. The alarm will sound at the Alarm Low level as outlined on page 6.
777 turns off. The 777 will beep during this time. If the 777 is turned on in an area that is not free of CO, an error will display and the 777 will need to be turned off and turned back on in a clean air environment.
TPI for calibration. WARRANTY and SERVICE POLICY Your TPI 777 is warranted to be free from defects in materials and workmanship for a period of 2 years after purchase (excluding calibration). If within the warranty period, your instrument should become inoperative from such defects, the unit will be repaired or replaced at our option.
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