Thermo Scientific 5030i SHARP, Инструкция по эксплуатации

Страница: 47 / 403

Installation
Acceptance Testing and Startup Procedures
Thermo Fisher Scientific Model 5030 i SHARP Instruction Manual 2-9
Attach the small sample tube adapter to the Model 5030 i inlet. Depending
upon your NIST-traceable volumetric flow transfer standard (FTS), you
may either attach your FTS now or add the flow audit adapter to
accommodate any flexible tubing that your FTS may require. Allow 60
seconds to stabilize the flow after connecting.
Record the Model 5030 i Volumetric Flow Rate as Qm and the FTS flow
rate as Qi, assuring that both are being recorded in units of actual liters per
minute. Take three readings each from Qm and Qi and average the
respective values. Use the following equation to calculate the percent
difference:
If %D is within ±4%, then the Model 5030 i volumetric flow rate
acceptance test has passed. If the Model 5030 i volumetric flow rate is
slightly out of tolerance, ±5%, the acceptance test should be classified as
marginal. If the volumetric flow rate performance is outside this range,
please perform a volumetric flow calibration.
For more information about the volumetric flow rate calibration, see the
“
Calibration ” chapter.
The leak check of the 5030 i SHARP is conducted by first measuring the
volumetric flow rate at the inlet adapter. Next, place the factory-supplied
leak check adapter on top of the inlet adapter and then install the flow-
meter on top of the leak check adapter. Compare the volumetric flow rate
of the 5030
i to the flow meter and calculate the difference. If the difference
is less than 0.80 L/min (80 ml/min) then the leak check passes. If it is
greater than 80 ml/min, check for leaks in the system by checking the
various fittings upstream of the measurement head. If the source of the leak
cannot be found, the instrument requires service by a trained technician.
The nephelometer light source has been factory set to a current of
approximately 65 milliamps (mA). Should this valve be outside a range of
60–70 mA, the source current should be adjusted in the calibration menu.
The 5030 i has an auto-zero function and it is common during setup to
potentially disturb the zero. To evaluate the zero of the 5030i, place a
HEPA filter at the inlet for approximately five minutes, or until the
concentration has stabilized. The nephelometer concentration should be ±1
g/m³. If this is not the case, the HEPA filter should be removed, and a
Leak Check
Procedure
Nephelometer Source
Verification
Nephelometer Zero
Check
Qi
Qi Qm
D

 
100 %