Sierra InnovaMass 240S In-Line Multivariable Mass Vortex Flow Meter

Overview

The Sierra InnovaMass 240S is the in-line version of Sierra’s multivariable mass vortex flow meter, a technology the manufacturer was first to bring to market in the late 1990s. A single instrument and a single process connection measure five parameters at once: mass flow rate, volumetric flow rate, temperature, pressure and fluid density. It measures the mass flow rate of any gas or liquid compatible with its wetted materials and is ideally suited to saturated or superheated steam.

Steam, compressed air, fuel gas and cooling water are metered at refineries, power stations, desalination plants and district energy systems across Oman, and mass-based measurement removes the guesswork of separate pressure and temperature compensation. Seven Star LLC supplies the Sierra InnovaMass 240S with engineering support in Muscat, and we can quote the flow body size, flange rating and output options that match your piping.

Multivariable Vortex Principle

A vortex meter, including the Sierra InnovaMass 240S, places a bluff body in the flow stream. As fluid passes, alternating vortices shed from each side of the body at a frequency proportional to velocity, and a sensor counts them. The Sierra InnovaMass 240S combines that vortex signal with an integral temperature sensor and pressure transducer, and it calculates density and mass flow with real gas, ideal gas or AGA-8 natural gas equations, so the result is a mass flow rate that remains valid when process conditions move.

Smart digital signal processing extends the low-flow range down to a Reynolds number of 5,000, and rangeability reaches 100:1 under ideal conditions. Accuracy for the mass flow rate of an in-line 240S is plus or minus 1.0 percent of rate for liquids and plus or minus 1.5 percent for gas and steam, over a nominal 30:1 range. The meter also computes energy in BTU, which supports real-time monitoring of steam and chilled water consumption.

Engineering Design of the Sierra InnovaMass 240S

The flow body is machined from 316L stainless steel as standard, with C276 Hastelloy or A105 carbon steel options, and it is available as a flanged or wafer meter. Flanged bodies cover 150, 300, 600 and 900 lb ANSI ratings plus PN16, PN40, PN63 and JIS classes, and wafer bodies are offered in 600 lb, PN63 and JIS 30K. A reduced-bore 240S-R version eliminates field-installed pipe reducers, allowing lower flow measurement than traditional vortex meters, for example a 3/4 inch meter on a 1/2 inch bore through to a 12 inch body on a 10 inch bore.

The electronics are housed in an explosion-proof NEMA 4X, IP66 enclosure with an alphanumeric 2 x 16 LCD. Six push buttons operate through the display glass, and the enclosure can rotate in 90 degree steps. Loop-powered versions use 12 to 36 VDC at 25 mA, while multiparameter versions use 12 to 36 VDC or 100 to 240 VAC. Outputs include one to three 4 to 20 mA signals, a pulse output and up to three alarm relays, with HART as standard and Modbus RTU, Modbus TCP/IP, BACnet MS/TP and BACnet/IP as options. FM, FMC, ATEX and IECEx approvals apply.

Key Features

The Sierra InnovaMass 240S provides these capabilities:

• Five process parameters from one in-line instrument: mass flow, volumetric flow, temperature, pressure and density.
• Flow bodies from 1/2 inch to 12 inch, with reduced-bore versions that extend the low flow range.
• Fluid temperature from −330 °F to 500 °F (−200 °C to 260 °C) with the standard sensor and up to 750 °F (400 °C) with the high-temperature sensor.
• Pressure ratings up to ANSI 900 lb, with transducer ranges from 30 psia up to 1,500 psia.
• Real gas, ideal gas and AGA-8 mass flow equations for natural gas.
• Energy (BTU) monitoring for steam and other utilities.
• Field configuration of ranges, alarms, outputs and display through six push buttons or a magnet.
• HART, Modbus and BACnet communication, with optional loop-powered operation.

Industrial Applications

The Sierra InnovaMass 240S is applied wherever mass flow of gas, liquid or steam must be measured in a pipe line that can accept an in-line body. In the Sultanate of Oman that includes boiler steam headers and process steam at refineries and petrochemical complexes, compressed air and nitrogen systems, fuel gas to turbines and heaters, and chilled and hot water lines serving district cooling and large commercial campuses at Muscat, Sohar and Salalah.

The in-line design of the Sierra InnovaMass 240S offers a fixed installation with no probe to insert, and its reduced-bore models avoid the need for piping reductions that disturb the flow profile. The meter is not recommended for multi-phase fluids. Seven Star LLC supplies the Sierra InnovaMass 240S alongside other vortex and flow instruments including the Rosemount 8800D vortex flowmeter, the Yokogawa VF701 vortex flowmeter and the Endress+Hauser Prowirl 72F vortex flowmeter.

Technical Specifications

The table lists data from the manufacturer datasheet for the Sierra InnovaMass 240S. Confirm size, pressure rating and options against the ordering chart.

Request a Quote for Sierra InnovaMass 240S

To obtain pricing for the Sierra InnovaMass 240S, send an RFQ to the Seven Star LLC instrumentation division in Muscat with the fluid, line size, flange rating, flow, pressure and temperature range and desired outputs. We will confirm the flow body and electronics options, arrange supply to Oman and the GCC, and include the manufacturer’s Sierra InnovaMass 240S datasheet with our quotation for your engineers to review.