Optional Equipment
Permeation Oven
9-8
Model 146
i
Instruction Manual
Thermo Fisher Scientific
Figure 9-3.
Cal Gas Therm Resistor Screen
3. Enter the exact value of the attached resistor and press
to save the
offset.
4. Remove the resistor and reconnect the gas thermistor.
5. Make sure the charcoal scrubber is connected to the ZERO bulkhead on
the rear panel.
6. Wait for the permeation gas temperature reading to stabilize.
Determining Permeation
Rate by Weight Loss
Use the following procedure to determine the permeation rate by weight
loss.
1. Make sure the oven has been calibrated as described in the “Permeation
Tube Oven Calibration” procedure described previously.
2. Insert the permeation tube carefully. Do not touch with fingers.
3. Turn on the instrument.
4. Wait 48-72 hours for the permeation tube to stabilize.
SAMPLE 12:34 ALARM
CAL GAS THERM (RESISTOR):
CURRENTLY: 4369 Ohms
SET TO: 04369 Ohms
§¨
MOVE CURSOR
©ª
CHANGE VALUE
SAVE
RANGE AVG DIAGS ALARM
Summary of Contents for 146i
Page 1: ...Model 146i Instruction Manual Dynamic Gas Calibrator Part Number 102482 00 30Jan2008 ...
Page 4: ......
Page 16: ...Contents xii Model 146i Instruction Manual Thermo Fisher Scientific ...
Page 148: ......
Page 188: ...Troubleshooting Service Locations 6 26 Model 146i Instruction Manual Thermo Fisher Scientific ...
Page 258: ...System Description I O Components 8 16 Model 146i Instruction Manual Thermo Fisher Scientific ...
Page 273: ...Thermo Fisher Scientific Model 146i Instruction Manual 9 15 Figure 9 5 Bench Mounting ...
Page 274: ...9 16 Model 146i Instruction Manual Thermo Fisher Scientific Figure 9 6 EIA Rack Mounting ...
Page 275: ...Thermo Fisher Scientific Model 146i Instruction Manual 9 17 Figure 9 7 Retrofit Rack Mounting ...