Endress+Hauser Proservo NMS83 Operating Instructions Manual page 86

Commissioning
86
Setting for a closed tank
For tanks that cannot be hand-dipped, follow the procedure shown below.
Level setting procedure
1. Navigate to: Operation → Gauge command → Gauge command
2. Select the Bottom level option to measure the tank bottom.
 NMS8x measures the tank bottom and returns to level if the post gauge
command is set to level (default).
3. Navigate to: Operation → One-time command status
4. Wait until the Finished option is shown.
5. Navigate to: Operation → Level → Bottom level
6. Read the bottom value (Bv).
7. Navigate to: Operation → Level → Tank level (a)
8. Calculate the level value (L) by using following formula.
 L = a - Bv
9. Navigate to: Setup → Set level
10. Input the value L for the Set level parameter.
This completes the level setting procedure.
If the datum plate is not zero (e.g. Z mm), adjust the set level value (L) by subtracting
Z from the value L (L= a-Bv-Z).
 43 Closed tank
1 Initial zero level position
2 Datum plate
Ea Initial setting of Empty
Bv Bottom level
a Tank level
L Set level value
Proservo NMS83
2
1
Endress+Hauser
A0029124