ThermoWorks 9135-156 HART SCIENTIFIC 3-POINT IR CALIBRATOR - Manual (Page 18)

6 General Operation
This section explains basic operation of the 9135 calibrator.
6.1 Set-up
Place the calibrator on a flat surface with at least three inches of free space
around the instrument. The prop may be swung down to tilt the instrument
from a horizontal position. Plug the power cord into a grounded mains outlet.
Make sure the supply voltage and voltage switch settings are correct (see Sec-
tion 4.3). The supply voltage must always match the switch settings! Operating
this instrument with the wrong supply voltage or switch settings will likely
damage the instrument and has the potential to start a fire.
Turn on the power to the calibrator by toggling the power switch on. The yel-
low LED corresponding to the 50°C set-point should immediately illuminate
and the calibrator will begin heating to this set-point. If the unit fails to operate
please check the power connection. The green ready LED should initially be
dark until the IR target reaches the set-point.
6.2 Setting the Temperature
As soon as the 9135 calibrator is switched on, the 50°C set-point LED lights
and the instrument begins to heat to 50°C. If this set-point is desired, wait until
the temperature stabilizes. To select the 100°C set-point press the select button
once and observe the 100°C set-point LED light up. To select the 150°C
set-point press the select button once more and observe the 150°C set-point
LED light up. To set the set-point back to 50°C press the select button once or
twice until the 50°C set-point LED lights up. Any time the select button is
pressed the green ready LED will go dark and stay dark until the temperature
reaches the new set-point. After the set-point is selected it will take some time
for the instrument to heat or cool to the desired temperature. Wait for the green
ready indicator to light up before proceeding with any calibrations.
6.3 Target Ready Indicator
The green target ready indicator shows when the IR target has stabilized to the
set-point. Immediately after the power is switched on and any time the select
button is pressed to change the set-point, the green LED will go dark and stay
dark until the temperature reaches the new set-point. After setting the set-point
it can take up to ten minutes to heat up to and stabilize at a higher temperature
and up to 40 minutes to cool down to and to stabilize at a lower temperature.
When the set-point is reached and the temperature becomes stable the green
ready LED will light indicating that the target is ready for calibration.
17
6 General Operation
Set-up