for tank gauging systems
Provides multiple spot temperature measurement in liquid storage tanks, used for average
temperature calculation and stratification correction
■ Obtain outstanding temperature conversion accuracy of ±0.05 °C (±0.09 °F)
■ Get ultra-stable temperature measurement for precise inventory calculations and custody transfer for
API chapter 7.3 compliance
■ Connect up to sixteen 3- or 4-wire temperature elements
■ Include integrated water level sensor
■ Benefit from convenient and safe installation with 2-wire IS bus power supply
Exact net volume calculations with highest precision average temperature measurement
The Rosemount 2240S Multi-input Temperature Transmitter provides multiple spot temperature measurement in liquid storage tanks. It is used for calculation of the average temperature of the liquid and corrects for stratification.
The Rosemount 2240S is approved for demanding custody transfer applications, which require very accurate level and temperature measurements for net standard volume calculations. It has an ultra high temperature conversion accuracy of ±0.05 °C (±0.09 °F).
The IP 66/67 and NEMA® 4X certified robust design makes it suitable for installation in harsh environments.
The temperature transmitter supplies measured data, such as temperature and water level, via the intrinsically safe 2-wire Tankbus, to a Rosemount 2410 Tank Hub. Measurement data and status information can be viewed on a PC with the Rosemount TankMaster software, as well as on the integral display of the tank hub and the Rosemount 2230 Graphical Field Display.
Figure 1: Tank Gauging System Overview
A. TankMaster PC
B. Modbus® RTU/TCP
C. Rosemount 2460 System Hub
E. Rosemount 2410 Tank Hub
F. Rosemount 2240S Multi-input Temperature Transmitter with Rosemount 765 Multiple Spot Temperature and Water Level Sensor
G. Rosemount 5900S Radar Level Gauge
H. Rosemount 2230 Graphical Field Display
I. Rosemount 3051S Pressure Transmitter
J. Rosemount 644 Temperature Transmitter with Rosemount 65, 114C, or 214C Single Point Temperature Sensor
Highly accurate multiple spot temperature and water level sensors
Rosemount 2240S can connect up to sixteen 3- or 4-wire temperature spot elements and an integrated water level sensor. The
value from each individual spot temperature element, in combination with the level value from the radar gauge is used for average
liquid temperature calculation.
The water level sensor is factory calibrated. If any adjustment is necessary during installation, it can easily be done with the
Rosemount 2240S built-in on-line calibration feature.
Available temperature sensor versions are:
■ Rosemount 565 Multiple Spot Temperature Sensor
■ Rosemount 566 Multiple Spot Temperature Sensor for cryogenic applications such as LNG
■ Rosemount 765 Multiple Spot Temperature Sensor with Integrated Water Level Sensor
■ Rosemount 614 Cryogenic Spot Temperature Sensor
Precise and reliable measurements in cryogenic storage tanks
The Rosemount 2240S Multi-input Temperature Transmitter provides complete temperature measurements for cryogenic and
refrigerated full containment storage.
Figure 2 illustrates an LNG Tank Gauging system with temperature transmitters for average liquid temperature measurement and
online redundant temperature stratification monitoring. The system also includes temperature transmitters for skin/cool-down
temperature measurement (white dotted line) and leak detection (red dotted line).
Figure 2: Liquefied Natural Gas (LNG) Tank Gauging System
A. Separate device for temperature and density profiling (LTD)
B. Rosemount 2240S Multi-input Temperature Transmitter with Rosemount 566 Multiple Spot Temperature Sensor
C. Rosemount 2240S Multi-input Temperature Transmitter with Rosemount 614 Cryogenic Spot Temperature Senso
Specifications and options
See the Specifications and options section for more details on each configuration. Specification and selection of product materials,
options, or components must be made by the purchaser of the equipment. See the Material selection section for more information.
Model codes contain the details related to each product. Exact model codes will vary; an example of a typical model code is shown
in Figure 3.
Figure 3: Model Code Example
2240S P 16 4 A F I1 0 A 1 M
1. Required model components (choices available on most)
2. Additional options (variety of features and functions that may be added to products)
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