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TE-5170D-BL TSP MFC 17 Operations Manual
Proceed with the following steps to begin the calibration:
1. Disconnect the sampler motor from the mass flow controller and connect the
motor to a stable AC power source by using the adapter cord.
2. Mount the calibrator orifice and top loading adapter plate to the sampler. A
sampling filter is generally not used during this procedure. Tighten the top
loading adapter hold down nuts securely to ensure that no air leaks are
present.
3. Allow the sampler motor to warm up to its normal operating temperature
(approximately 10-15 minutes).
4. Conduct a leak test by covering the hole(s) on top of the orifice and pressure
tap on the orifice with your hands. Listen for a high-pitched squealing sound
made by escaping air. If this sound is heard, a leak is present and the top
loading adapter hold-down nuts need to be re-tightened. If the sound is lower,
the leak is near one of the other gaskets in the system. Avoid running the
sampler for longer than 30 seconds at a time with the orifice blocked to
avoid overheating the motor. Do not perform this leak test procedure with a
manometer connected to the side tap on the calibration orifice or the blower
motor. Liquid from the manometer could be drawn into the system and cause
motor damage.
5. Connect one side of a water manometer to the pressure tap on the side of the
orifice with a rubber vacuum tube. Leave the opposite side of the manometer
open to the atmosphere. Note: Both valves on the manometer have to be open
for the liquid to flow freely. One side of the 'U' tube goes up the other goes
down; add together for the "H2O reading.
6. A manometer must be held vertically to ensure accurate readings. Tapping the
backside of the continuous flow recorder will help to center the pen and
provide accurate readings. When using a variable orifice (TE-5028A), five
flow rates are achieved in this step by adjusting the knob on the variable
orifice to five different positions and taking five different readings.
7. Record the ambient air temperature, the ambient barometric pressure, the
sampler serial number, the orifice s/n, the orifice slope and intercept with date
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