6. FUNCTION SELECTION
Pressing the Func Key enables access to the different functions available on
the 709R. Available functions are: Combustion Analyzer, Thermometer,
Manometer, and Date / Time display.
6.1 Function 1: - Thermometer
Press the Func Key repeatedly to access the thermometer function. In this
mode the 709R functions like a K-Type thermocouple thermometer. The
pump will stop running when in this function.
1. Ensure you have a 'K' type probe connected to one or both of the thermo-
couple sockets T1 or T2 (refer to figure below)
WARNING
: - There is ONLY one correct way to connect the 'K' type thermo-
couple plug into the socket (see 4.2). Forcing the plug into the socket the
wrong way may result in damage to the instrument.
2. Touch the temperature probe to the item under test and read the displayed
temperature.
Other Features:
• Pressing the Up Arrow Key will toggle between ºC and ºF
• Pressing the Scroll/Enter Key will toggle the Differential Temperature ON
and OFF
• 'oPEn' will be displayed if no 'K' type probe is connected to the thermocou-
ple socket
The thermometer func-
tion allows you to per-
form temperature tests.
Function 1 Display (Temperature)
T1 Temperature
T2 Temperature
Differential Temperature
6.2 Function 2: - Manometer
Press the Func Key repeatedly to access the thermometer function. In this mode
the 709R functions like a differential manometer. The pump will stop running
when in this function.
1. Ensure you have Pressure Sampling Tube connected to one or both of the
Pressure Ports and there are no restriction in the tubing (see figure below)
2. Zero the display by pressing the Down Arrow Key.
3. Connect the tube(s) to the device under test and read the pressure on the dis-
play.
Other Features:
• Pressing the Up Arrow Key will scroll through mbar, kPa and inH2O
• Pressing the Down Arrow Key will Zero the Pressure reading
• Pressing the Scroll/Enter Key will toggle the ch2 temperature reading ON and
OFF
The 709R incorporates a differential manometer. This means when a single hose
is connected to the (+) port and pressure is applied, the 709R will read positive
pressure. If a single hose is connected to the (-) port and pressure is applied, the
709R will read a negative pressure. If both ports are connected to a pressure, the
709R will read the difference (P1 - P2) between the two.
The pressure function
allows you to perform draft
and pressure tests.
Function 2 Display (Pressure)
Pressure reading
