# 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.

### Double Remote Seal Application

#### Calibration Range

##### LRV or 4mA point = Phigh – Plow

LRV = (0.9*30”) – (0.9*100”)

LRV = -63”H2O

##### URV or 20mA Point = Phigh – Plow

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

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.

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

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### 2 thoughts on “Level Calculation with Remote Seals”

1. Thanks for sharing the Remote Seals Level Calibration Procedure