Level Calculations
DP Transmitter Level Measurement for Closed Tank
DP Level Transmitter Range Calculator
LRV: — mmH₂O
URV: — mmH₂O
DP Level Transmitter Range Calculator
Explanation:
- Tank Height (mm): The height of the liquid column inside the tank that the transmitter will measure.
- Specific Gravity (SG): The ratio of the liquid’s density compared to water. Water’s SG is 1.0. For other liquids, SG will vary (e.g., oil may have an SG of 0.8).
- Transmitter Elevation: Since the transmitter is installed at the datum point, elevation is zero. The pressure range calculated will be the pressure exerted by the liquid column when the tank
DP Level Transmitter Range Calculator (Below Datum Point)
LRV: — mmH₂O
URV: — mmH₂O
DP Level Transmitter Range Calculator (Below Datum Point)
Explanation:
- Tank Height (mm): The height of the liquid column inside the tank that the transmitter will measure.
- Specific Gravity (SG): The ratio of the liquid’s density compared to water. Water’s SG is 1.0. For other liquids, SG will vary (e.g., oil may have an SG of 0.8).
- Transmitter Elevation: Since the transmitter is installed below the datum point, it will sense additional pressure due to the elevation difference. The pressure range calculated will include the liquid column pressure plus the additional pressure from the transmitter’s distance below the datum point.
DP Level Transmitter Range Calculator (Above Datum Point)
LRV: — mmH₂O
URV: — mmH₂O
DP Level Transmitter Range Calculator (Above Datum Point)
Explanation:
- Tank Height (mm): The height of the liquid column inside the tank that the transmitter will measure.
- Specific Gravity (SG): The ratio of the liquid’s density compared to water. Water’s SG is 1.0. For other liquids, SG will vary (e.g., oil may have an SG of 0.8).
- Transmitter Elevation: Since the transmitter is installed above the datum point, the pressure sensed by the transmitter will be reduced. The calculated pressure range will account for the liquid column pressure minus the elevation head of the transmitter above the datum point.
DP Level Transmitter Range Calculator (Wet Leg)
LRV: — mmH₂O
URV: — mmH₂O
DP Level Transmitter Range Calculator (Wet Leg)
The calculator is to calculate the range for a DP Level Transmitter with a wet leg and can be used in both scenarios—whether the transmitter is installed above or below the datum point. However, the calculations assume that the transmitter elevation relative to the datum is provided as input.
Key Scenarios:
- Transmitter Installed Above Datum Point:
If the transmitter is installed above the datum point, enter the “Transmitter Elevation from Datum (mm)” as a negative value (e.g., -500 mm).
2. Transmitter Installed Below Datum Point:
If the transmitter is installed below the datum point, enter the “Transmitter Elevation from Datum (mm)” as a positive value (e.g., +500 mm).
How It Works for Both:
- The formula adjusts based on the value of the transmitter elevation. If the transmitter is above the datum point (positive elevation), it calculates a negative LRV to account for the reduced pressure.
- If the transmitter is at or below the datum point (zero or negative elevation), the pressure from the liquid head is added, making the LRV positive.
Calculators for Displacer Type Level Measurement
Displacer Volume Calculator
Volume: —
Explanation:
- Input fields allow the user to enter the radius and height of the displacer.
- Units for radius and height: You can now choose between mm or cm, and the values are automatically converted for accurate calculations.
- The shape selector lets the user choose between a cylindrical or conical displacer.
- When the user clicks the “Calculate Volume” button, the appropriate formula is applied based on the shape chosen.
Level Troll Weight Loss Calculator
Weight Loss: — N (newtons)
Explanation:
To calculate the weight loss of a displacer in a level troll based on the total weight of the displacer, the specific gravity of the liquid, and the diameter, you can follow these steps:
- Calculate the Radius from the diameter.
- Calculate the Volume of the displacer using its submerged height. This requires knowing the submerged height or can be approximated.
- Calculate the Weight Loss using the formula for buoyant force, which considers the specific gravity of the liquid.
Formula
The weight loss due to buoyancy is given by:
Weight Loss (N) = Volume of Displacer (m3) × Specific Gravity of Liquid × Gravity (m/s2)
LRV and URV Percentage Calculator
Results:
0%: — N
25%: — N
50%: — N
75%: — N
100%: — N
Explanation:
- Input the LRV and URV in Newtons into their respective fields.
2. Click the “Calculate Percentages” button to see the results for 0%, 25%, 50%, 75%, and 100%.
Newton to Grams Converter
Weight: — g