Laversab 6300-M4 User Manual page 55

Step 3. After the warm-up period is over, using the Pressure Standard, generate a pressure of
1.000 inHg absolute. Allow the pressure to be stable at 1.000 inHg for 2 minutes and take the
reading on the Pitot side (PtinHg) of the 6300-M4. This is the first of your "Before" calibration
adjustment reading. It will indicate the zero drift since the previous calibration.
Note: If your Standard cannot generate 1.000 inHg abs., the lowest possible pressure below
4.000 inHg abs. will be acceptable.
Step 4. Generate a pressure of 100.000 inHg absolute, allow the pressure to stabilize for 2
minutes and take the reading on the Pitot side (PtinHg) of the 6300-M4. This is the second of
your "Before" calibration adjustment reading. It will indicate the zero plus slope drift since
the previous calibration. Leave the pressure at 100.000 inHg while you perform the next step.
Note: If your Standard cannot generate 100.000 inHg abs., any pressure between 60.000 and
100.000 inHg abs. will be acceptable.
If you do not wish to make a calibration adjustment, but just want to verify the accuracy of the
6300-M4, please skip to Step 10.
Step 5. To make a calibration adjustment for the Pitot port, on the 6300-M4, move to the the
CALIBRATION screen using the NEXT SCREEN key and enter the password. The calibration
screen appears as follows:
Vacuum: 1. ________
F.S. : 2. ________
Step 6. Ensure that the pressure generated by the Standard on the Pitot port is still 100.000
inHg. Select item '2' using the keypad on the remote unit and then enter the value 100.000 in
item 2. This indicates the full scale point for the calibration. If you make an error while
entering data, press "CLR". Do not press "CANCEL". You may re-enter the value any
number of times.
Note: If your Standard cannot generate 100.000 inHg abs., any pressure between 60.000 and
100.000 inHg abs. will be acceptable. Enter the value of the generated pressure.
Step 7. Now generate a pressure of 1.000 inHg with the Standard. Allow the pressure to
stabilize for 2 minutes, select item '1' using the keypad on the remote unit and then enter the
value 1.000 in item 1. This indicates the vacuum point for the calibration. If you make an error
while entering data, press "CLR". Do not press "CANCEL". You may re-enter the value any
number of times.
CALIBRATION
Pt inHg Ps inHg
3. ________
4. ________
48