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Brand: Rosemount
Rosemount 2405 Monitoring Hub for Tank Inventory
Description
Rosemount 2405 Monitoring Hub: field display and HART hub for tank inventory
The Rosemount 2405 Monitoring Hub combines three jobs in one polymer housing: it is the data concentrator for the level, temperature and pressure transmitters on a small tank group, the local display that operators read in the field, and the communication unit that passes the values to a host. Up to eight HART transmitters share its multidrop sensor inputs, and the results are shown as level, volume, volume utilisation and rate of change.
Seven Star LLC supplies the Rosemount 2405 Monitoring Hub in Oman and the GCC as an independent supplier in Muscat. It is a configurable product, so the full model code matters when you order.
Rosemount 2405 model code explained
The datasheet lists the choices below, in the order they appear in the code.
| Field | Choices |
|---|---|
| Model | 2405 = Monitoring Hub |
| Inputs and outputs | 1 = up to 8 HART transmitters. Each tank needs at least one level sensor; temperature and pressure sensors are optional |
| Application | I = tank inventory management |
| Host communication | M = Modbus TCP and HART IP |
| Housing | P = engineered polymer |
| Hazardous location | NA = none; KL = ATEX, IECEx, US and Canada intrinsic safety (associated apparatus); I4 Japan; IP Korea; IW India |
| Cable and conduit | 00 none; 01 = 3 M20 glands + 5 plugs; 02 = 7 M20 glands + 5 plugs + 1 M20 gland for RJ45; 03 = 3 M20 glands + 5 plugs + three ½ in. NPT adapters |
| Mechanical installation | MI = integrated; MP = kit for wall and pipe mounting |
| Options | Q1 certificate of conformance, WP weather protection cover, WR3 or WR5 extended warranty (3 or 5 years) |
Rosemount 2405 technical specifications
| Parameter | Specification |
|---|---|
| Manufacturer / part number | Rosemount (Emerson) / 2405 Monitoring Hub |
| Field communication | HART multidrop, up to eight transmitters, two sensor inputs isolated from ground |
| Host communication | Modbus TCP and HART IP over 10/100 Mbps Ethernet, RJ45 |
| Display | 4.3 in. 480 x 272 backlit colour TFT LCD, six-button keypad, one multicolour health LED |
| Relay outputs | Six, 250 Vac 8 A / 24 Vdc 8 A resistive |
| Analog outputs | Three, 4-20 mA, accuracy ±0.02 mA, 12 bit; alarm levels selectable between Rosemount standard and NAMUR NE43 |
| Digital inputs | Four, for potential-free contacts |
| Auxiliary supply out | 24 Vdc |
| Power supply | 24-48 Vdc or 100-240 Vac 50/60 Hz (-15% to +10%); maximum 12 W; fuse 2 A, 350 V |
| Data logging | Built-in memory card, up to 200,000 data points |
| Housing | Polycarbonate copolymer; IP66/IP67 and Type 4X |
| Ambient temperature | -40 to +60 °C (display reading -20 to +60 °C) |
| Humidity | 0 to 100% relative |
| Weight | 1.7 kg (3.7 lb) |
| Start-up time | About 30 seconds |
How the Rosemount 2405 turns transmitter signals into inventory
The 2405 powers and polls the loop-powered HART transmitters on its two sensor inputs, reads the HART primary and secondary variables, and calculates inventory values with the strapping and unit settings entered during set-up. Output units cover level in metres, feet and inches, volume in cubic metres, litres, cubic feet, barrels and gallons, volume utilisation in percent, level rate and flow rate, pressure in several absolute and gauge units, and temperature in °C or °F.
The supported transmitter list in the datasheet includes the Rosemount 1208C, 3408, 5408, 5300 and 3100 level transmitters, the 2051 and 3051 pressure transmitters, and the 3144, 644 and 248 temperature transmitters. Generic support is also given for level, temperature and pressure HART transmitters from other makers, which helps when a tank group already has mixed instruments.
Values can be viewed locally on the colour screen or remotely in a web server, and logged data can be downloaded through the same web interface. Step-by-step configuration wizards reduce commissioning effort, and alarm handling is designed to help operators decide quickly.
Rosemount 2405 compared with related tank gauging parts
The 2405 is aimed at chemical storage, water treatment chemicals, food and beverage, metals and mining and other smaller tank groups. For large terminals with many tanks, the Rosemount 2460 System Hub is the data concentrator used with 2410 tank hubs and radar gauges. For water and wastewater pump stations and open channel work, the Rosemount 3490 Controller offers a similar display and HART inputs with pump control wizards. Marine cargo gauges such as the TGU 53, TGU 65 and TGU 68 belong to a different system altogether.
| Part | Main role | Typical use |
|---|---|---|
| Rosemount 2405 | Up to 8 HART devices, inventory display and Modbus TCP hub | Small and medium tank groups |
| Rosemount 3490 | 1 or 2 sensor inputs, up to 6 relays, pump control wizards | Pump stations, open channel, tank volume |
| Rosemount 2460 | Up to 64 tanks, eight configurable ports, redundancy | Large tank farms and terminals |
Selection checklist for the Rosemount 2405
- Count transmitters per tank. Every tank needs a level sensor, and the hub supports up to eight HART devices in total.
- Confirm each transmitter is HART loop-powered and decide how addresses will be assigned in multidrop mode.
- Choose the hazardous location code that matches your area classification. Intrinsic safety codes cover ATEX, IECEx, US and Canada, Japan, Korea and India.
- Select the glands that fit your cabling: three M20, seven M20 with an RJ45 gland, or NPT adapters.
- Choose integrated mounting or the wall and pipe kit, and add the weather protection cover when the display will be read in sun or rain.
- Check the host: Modbus TCP into TankMaster, TankMaster Mobile, or a third-party system.
Installation, commissioning and maintenance of the Rosemount 2405
Mount the hub on a wall or pipe with the stainless steel kit, use the stainless steel support plate with M20 threads for glands, and use spring-loaded terminals for the field wiring. The enclosure has seven M20 entries, and unused entries must be closed with plugs to hold the IP66/IP67 rating. Use the maximum loop resistance values in the datasheet when planning HART cable lengths: for example 2200 Ω at 3.75 mA and 66 Ω at 22.5 mA.
After power-up, which takes about thirty seconds, run the wizard to define tanks and map each transmitter. Check relays and analog outputs against the control system, set the signal on alarm to the required NAMUR level, and download a log file to confirm that data recording works. New devices ship with a QR asset tag, which gives access to drawings and documents tied to the serial number. Keep a spare fuse and a record of the model code for replacement.
Typical applications of the Rosemount 2405 in Oman and the GCC
In the region the 2405 is a good fit for chemical dosing and storage tanks at desalination and water treatment plants, such as chlorine and antiscalant storage where level and temperature must be visible both in the field and in the control room. It also serves day tanks and bunded chemical stores at petrochemical, power and industrial sites. The 0 to 100% humidity rating and the IP66/IP67 housing help in dusty and humid coastal conditions, and the weather cover keeps the screen readable under strong sunlight.
Information to send with an RFQ for the Rosemount 2405
- Full model code of the 2405 or the nameplate photo
- Number of tanks and list of HART transmitters with model numbers
- Hazardous area classification and required certification
- Host system and protocol, and whether TankMaster Mobile is used
- Mounting method, gland type and weather cover requirement
- Quantity and delivery location
Documents and quotation
A manufacturer datasheet for the Rosemount 2405 Monitoring Hub is attached on this page, so you can check the model code, ratings and dimensions against your project documents before ordering.
To receive a quotation, send us the part number or the full model code from your nameplate, the quantity, and the delivery location. Seven Star LLC is an independent supplier in Muscat and replies with availability and lead time, and we confirm the details with you before anything is ordered.
Other Models in the Rosemount Tank Gauging Range
Seven Star LLC supplies models from the Rosemount Tank Gauging range in Oman and the GCC. Compare the related models below and request a quote for the one that matches your application.
| Model | Category | |
|---|---|---|
| Rosemount 2405 Monitoring Hub for Tank Inventory | Level Instrumentation | You are viewing this model |
| Rosemount 3490 Controller for Level, Pump and Flow | Level Instrumentation | View details |
Datasheets & Documents
- Datasheet Rosemount 2405 Monitoring Hub Datasheet Download
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About brand
Rosemount is Emerson's brand for pressure, temperature, level and flow measurement, best known for the 3051 pressure transmitter. Frank Werner, Robert Keppel and Vernon Heath founded it in Minnesota in 1956 as Rosemount Engineering Company, first making temperature sensors for aerospace. It moved into the process industries, took the name Rosemount Inc. in 1966, and has been part of Emerson since 1976.
Seven Star LLC is an independent supplier in Muscat. We list Rosemount transmitters, level instruments, flowmeters and analytical sensors, and supply them and their spares to oil and gas, power, water and process plants in Oman and the GCC by model code.
Rosemount company profile
| Established | 1956, Minnesota, USA, as Rosemount Engineering Company |
|---|---|
| Founders | Frank D. Werner, Robert E. Keppel and Vernon H. Heath |
| Ownership | Acquired by Emerson in 1976; now an Emerson brand |
| Product families | Pressure, DP flow and level transmitters, temperature sensors and transmitters, radar and guided wave radar level, vibrating fork switches, tank gauging, magnetic, vortex and ultrasonic flowmeters, liquid analysis sensors and wireless instruments |
Milestones
- 1956: Robert Keppel, Vernon Heath and Frank Werner incorporate Rosemount Engineering Company in Minnesota; early work is aerospace sensors.
- 1969: The Rosemount 1151 analog pressure transmitter is introduced.
- 1976: Emerson acquires Rosemount.
- 1989: The Rosemount 3051 pressure transmitter, built on digital technology, is launched.
- 2001: The 3051S generation follows.
Rosemount products we list
| Family | Models | Typical use |
|---|---|---|
| Pressure transmitters | 3051, 3051C coplanar, 3051T in-line, 3051S, 3051S series, 3051SMV multivariable, 2051, 2088, 1199 diaphragm seals | Pressure, differential pressure and remote seal measurement |
| DP flow and DP level | 3051CF flowmeter, 3051L, 3051SAL | Flow through primary elements, and level in pressurised vessels |
| Temperature | 644, 248, 3144P, 848T, 648 wireless, 214C RTD sensor, 2240S multi-input | Process temperature, high-density multipoint and tank temperature |
| Radar and level | 5408, 5400, 5300 GWR, 3300 GWR, 3308A wireless, 5900S, 5900C tank gauges | Level in tanks, separators and custody transfer tank gauging |
| Level switches | 2120, 2140, 2160 wireless, 702 discrete transmitter | High and low level alarms, overfill protection and pump protection |
| Flowmeters | 8700 magnetic, 8800D vortex, SeniorSonic 3414, 3415/3416, 3417, JuniorSonic 3411/3412, 3814 liquid | Water, steam and gas flow, and fiscal gas and liquid metering |
| Liquid analysis | 396P TUpH, 396PVP, 499ACL chlorine sensor | pH, ORP and free chlorine in water and process streams |
Many Rosemount transmitters share one platform, so the model code tells you what you have. On a 3051, the letter after the number sets the type: C for coplanar (differential or gauge), T for in-line, L for liquid level and CF for a complete flowmeter. The next characters set the measurement type, the range code, the output (4-20 mA HART, FOUNDATION Fieldbus or WirelessHART) and the wetted materials. A transmitter with the wrong range code may work, but with poor accuracy at the point that matters.
Where Rosemount instruments are used
In Oman and the GCC, Rosemount instruments are used across upstream oil and gas, gas plants and LNG, refineries, tank farms and terminals, power and desalination stations, and water networks. Ultrasonic gas meters and tank gauges are used for fiscal and custody transfer measurement.
Ordering Rosemount instruments: what we need
Send the full model code from the nameplate (for example 3051CD2A22A1AM5B4) and the tag if it is a replacement. For a new instrument, send the measuring range, process connection, wetted materials, output protocol and hazardous area approval.
Facts checked against Emerson's Rosemount history and published company histories, October 2026.
Browse Rosemount products by category: Pressure Instrumentation, Temperature Instrumentation, Level Transmitter, Liquid Analysis Sensors, Flowmeters.
FAQ
Questions about the Rosemount 2405 Monitoring Hub for Tank Inventory
Answers from our engineering team on installation, compatibility and integration.
01How many transmitters can a Rosemount 2405 connect?
Up to eight HART transmitters on its multidrop sensor inputs. Each tank needs at least one level sensor, while temperature and pressure sensors are optional.
02What host protocols does the Rosemount 2405 offer?
Modbus TCP and HART IP over a 10/100 Mbps RJ45 Ethernet port. It works with Rosemount TankMaster and TankMaster Mobile and with third-party systems.
03What outputs does the Rosemount 2405 provide?
Six relay outputs rated 250 Vac 8 A or 24 Vdc 8 A resistive, three 4-20 mA analog outputs, four digital inputs and a 24 Vdc supply output.
04What is the environmental rating of the Rosemount 2405?
The polymer enclosure meets IP66/IP67 and Type 4X, with an ambient range of -40 to +60 °C and 0 to 100% relative humidity. The display reads from -20 to +60 °C.
05Can the Rosemount 2405 log data?
Yes. A built-in memory card stores up to 200,000 data points, and logs can be downloaded through the web interface.
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