The capacitive water level sensor continuously measures free water level below the oil surface and provides an input for on-line net inventory calculations. The integrated multiple spot temperature sensor is Rosemount 565.
The 765 sensor is available in two versions, open and closed. The open version is suitable for crude oil applications and the closed version is suitable for lighter fuels such as diesel oil etc.
One of the Pt-100 temperature sensors can be installed inside the water level probe allowing temperature measurements at low levels.
The water level sensor delivers a high-speed digital signal, which is connected to the Rosemount 2240S Multi-input Temperature Transmitter.
Rosemount 765 is delivered in a stainless steel (AISI 316) housing, welded to the flexible temperature sensor tube to get a hermetic design. It has a heavy duty design with no moving parts.
Offset calibration can be done with an integrated calibration feature in the 2240S transmitter.
Features & Benefits
Measures interface between water and oil
Special crude oil verison is available
Integrated with multiple spot temperature sensor or stand-alone for maximum flexibility
Handles close to bottom measurements
Highest reliability and custody transfer accuracy
Rugged design for harsh environments
Specifications
Technical Data Water Level Sensor
For complete data see Rosemount 565/566/765 Multiple Spot Temperature and Water Level Sensor Product Data Sheet.
Open model:
Suitable for crude oil applications
Closed model:
Suitable for lighter fuels such as diesel oil
Active measuring range:
500 mm (20 in.) or 1000 mm (40 in.)
Output:
High-speed RS485/Modbus communication with Rosemount 2240S
Accuracy:
± 2 mm (0.08 in.) for 500 mm active length
± 4 mm (0.16 in.) for 1000 mm active length
Repeatability:
± 0.5 mm (0.02 in.)
Operating temperature:
0 to 120 °C (32 to 250 °F). Maximum temperature at flange is 80 °C
( 180 °F)
Operating pressure:
0-4 Bar (0-58 Psi). Designed for atmospheric non-pressurized tanks. Handles liquid pressure from hydrocarbons and petrochemical products equivalent to a level of 40 m (130 ft).
Explosion protection:
ATEX, IECEx, FM-US, and FM-C
Mechanical dimensions:
Connection thread: M33x1.5 mm
Length: Active length 140 mm (5.5 in.)
Outer diameter of WLS, closed model: Ø=38 mm (1.5 in.)
Outer diameter of WLS, open model: Ø=48 mm (1.9 in.)
Immersed material:
AISI 316, FEP, PTFE and PEEK with 30% glass
00813-0100-5565.pdf 1834 KB
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