Teledyne Max-5 - Combustion efficiency analyzer - Manual (Page 5)

MAX5 PORTABLE COMBUSTION EFFICIENCY MONITOR
GENERAL DESCRIPTION
INTRODUCTION
The MAX 5 Portable Combustion Efficiency Analyzer provides several special features and
applications. It directly measures oxygen, carbon monoxide, combustibles, and temperature
levels in a subject sample stream. The MAX 5 also includes microprocessor-based special
functions enabling the computer to calculate levels of carbon dioxide and combustion efficiency.
As an added bonus, the computer can calculate and display actual fuel cost savings (Compu-
Cents
TM
), by using the efficiency level prior to an adjustment, the level after an adjustment, and
an average fuel cost as reference points.
The MAX 5 incorporates an internal microcomputer. The computer program resides in ROM
(read only memory) and is not affected by shutdown periods, loss of power, or battery failure.
However, the calibration parameters and stored measurement readings are retained in RAM
(random access memory) which requires operating power to protect it; thus, the information
stored in RAM will be lost if battery power is interrupted (during battery replacement, for
example).
The computer controls the display and reads the keyboard. A 12-bit analog-to-digital (A-D)
converter converts the output signals from the various measurement sensors and the
thermocouple into digital data that goes to the computer. The computer interprets this and
compares the data to calibration data you have entered. The computer displays the corrected
values on the LCD.
Also, the computer performs error checking and reporting, as well as the other special functions
available for selection via the special function keys.
The actual program that runs the computer is compiled into machine language for faster
execution and more efficient use of memory. It is not accessible by high-level interpreters, such
as Basic, and it is not available to the user for modification in any way.