Test Products International 712 - Manual (Page 23)

6.4 Function 4: - Date/Time
Press the Func Key repeatedly to access the date/time screen. From this func-
tion Time, Date and Year can be changed.
1. Once the Time, Date, and Year screen is displayed, press the Scroll/Enter
Key once to allow you to change the data.
2. Press the Up Arrow Key to Increase the Minutes
3. Press the Down Arrow Key to Decrease the Minutes
4. Press the Scroll/Enter Key to confirm the desired Minute and move onto
the Hours
5. Repeat steps 2 to 4 to change the Hour, the Day, the Month and the Year
6. The unit will return to normal after the desired Year has been confirmed
6.5 Function 5: - Combustion Analysis
Press the Func Key repeatedly to return to Combustion Analysis mode and
the default display (Combustion display 1)
• Combustion Display 1 (Default Start Up Display)
• Displays Carbon Monoxide (CO) reading in parts per mil-
lion (ppm)
• Displays calculated Carbon Dioxide (CO2) figure in per-
centage (%)
• Displays calculated CO/CO2 (Ratio) figure
6.3 Function 3: - Combustible Gas Leak Detection
Press the Func Key repeatedly until the 25 second countdown screen is
reached. The 712 will countdown from 25 then ‘O Leak’ will be displayed. In
this mode the 712 functions like a combustible gas leak detector.
1. Ensure you have the Tubing & In-Line Filter for Leak Detection connected
to the Gas Sample Port (see figure below)
PLEASE ENSURE THAT THE MINI PUMP PROTECTION FILTER ASSEMBLY IS
IN PLACE AT ALL TIMES IN THIS FUNCTION
2. Locate combustible gas leaks by putting the inlet of the 712 near fittings
and valves. Leaks will show as a level between 0 and 3 and an audible beep
will be heard.
Level of Flammable Gas detected as follows: -
Value on Screen Tone Sounded
0 < 100ppm No Tone
1 > 100ppm but < 1,000ppm Long Pitched Tone
2 > 1,000ppm but < 10,000ppm Medium Pitched Tone
3 > 10,000ppm Short Pitched Tone
The Leak function
allows you to perform
combustible gas leak
tests.
Function Display 4 (Date / Time)
Time
Date / Month
Year
Function Display 3 (Leak Detection)
Combustible gas leak detection
expressed as a leve from 0 to 3. See
below.