Home » Level Calculation with Remote Seals
Formulas Level Measurement

Level Calculation with Remote Seals

Diaphragm seals for tanks under Vacuum

The transmitter must be mounted level with or below the lowest tap to ensure positive pressure at the transmitter.

Level Calculation with Remote Seals

Dist. Between Taps = H

DP = Hside – Lside

DP = (L*SGp + h*SGf ) – (H+h)*SGf

DP = L*SGp – H*SGf

Double Remote Seal Application

Double Remote Seal Application to Measure Level

Calibration Range

LRV or 4mA point = Phigh – Plow
LRV = Head2 – Head1

LRV = (0.9*30”) – (0.9*100”)

LRV = -63”H2O

URV or 20mA Point = Phigh – Plow
URV = (Head2 + Head3) – Head1

URV = [(0.9*30”) + (1.1*50”)] – (0.9*100”)

URV = -8”H2O

Cal. Range = -63 to -8 in H2O

Density Calculation with Remote Seals Transmitter

Density Calculation with Remote Seals Transmitter

Max. Allowable ΔS.G = 0.2

Dist. Betw. Taps = 10 ft = 10 x 12” = 120”

Calibration Range

LRV or 4mA point = 120” * (SGp – SGf)

LRV = 120” * (1.1 – 0.95)

LRV = 18”H2O

URV or 20mA Point = 120” * (SGp – SGf)

URV = 120” * (1.3 – 0.95)

URV = 42”H2O

Cal. Range = 18 to 42 inH2O

Interface Calculation with Remote Seals Transmitter

Application Example: To determine % of interface of Liquid A with respect to Liquid B.

Interface Calculation with Remote Seals

Dist. Betw. Taps = 10 ft = 10 x 12” = 120”

Calibration Range

LRV or 4mA point = 120” * (SG1 – SGf)

LRV = 120” * (1.1 – 0.95)

LRV = 18”H2O

URV or 20mA Point = 120” * (SG2 – SGf)

URV = 120” * (1.3 – 0.95)

URV = 42”H2O

Cal. Range = 18 to 42 inH2O

Also Read: Level Switch Animation

Related Articles

Float & Dial Level Gauge Principle

S Bharadwaj Reddy

Servo Tank Gauges Working Principle

S Bharadwaj Reddy

Displacer Level Sensor Working Animation

S Bharadwaj Reddy

Tilt Level Switch Working Animation

S Bharadwaj Reddy

Basics of DP Transmitter Suppression and Elevation

S Bharadwaj Reddy

Calculate Flow Transmitter Output Current

S Bharadwaj Reddy

2 comments

Karuna May 6, 2016 at 1:38 am

Thanks for sharing the Remote Seals Level Calibration Procedure

Reply
tad July 27, 2016 at 8:46 am

wow this is fantastic

Reply

Leave a Comment

This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish. Accept Read More

Level Calculation with Remote Seals

WordPress Image Lightbox

Send this to a friend