

SKU: 3490
Process control unit with built-in tank-volume / flow / pump-control / totalization / data-logging wizards — programmed via intuitive on-screen guides without requiring custom PLC logic. Comprehensive control functionality for 4-20 mA or HART-compatible transmitters (e.g., the Rosemount 1208 Level + Flow Transmitter). Tank-volume wizard supports strapping-table-based volume calculation from level. Differential calculations across two transmitter inputs. Common applications: pump start/stop on level set-points, flow totalization for transfer billing, leak-detection differential between supply and discharge. The right choice when full TankMaster + 2460 hub system is over-spec but more than a basic indicator is needed.
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Process control unit with built-in tank-volume / flow / pump-control / totalization / data-logging wizards — programmed via intuitive on-screen guides without requiring custom PLC logic. Comprehensive control functionality for 4-20 mA or HART-compatible transmitters (e.g., the Rosemount 1208 Level + Flow Transmitter). Tank-volume wizard supports strapping-table-based volume calculation from level. Differential calculations across two transmitter inputs. Common applications: pump start/stop on level set-points, flow totalization for transfer billing, leak-detection differential between supply and discharge. The right choice when full TankMaster + 2460 hub system is over-spec but more than a basic indicator is needed.
The Rosemount 3490 Controller # 3490 is manufactured by Rosemount. Valley Instrument Service is an authorized Rosemount dealer offering full sales support, NIST-traceable calibration, and expert technical assistance.
Our team can help with product selection, specs, pricing, and application support.
Contact Us or Call (661) 327-8681Universal process controller for any 4-20 mA or HART-compatible transmitter. Wall or panel mounted. Pre-programmed wizards for level, pump control, open-channel flow, differential level, and tank volume calculations. Five field-programmable relays for control / alarm / fault output. Provides protected (IS) 24 V dc loop power for hazardous-area transmitters. Backlit display.
Rosemount is configurator-heavy and quote-only — Valley Instrument verifies option compatibility, lead time, and pricing before confirming your order.

TRL2 Field Bus Modem — connects the TRL2 fieldbus from Rosemount Tank Gauging field devices (or the 2460 System Hub) to the TankMaster PC in the control room. Choose RS232 or USB interface to the PC. Used in service / maintenance, software configuration, and small-scale tank gauging installations where direct PC-to-fieldbus communication is needed without a full system hub. Compact form factor, intrinsically safe options for hazardous-area access.

Intrinsically safe back-lit field display for tank gauging — presents tank data (level, temperature, pressure, total observed volume, density, water level) directly at the tank with excellent readability. Hinged lid protects the LCD from sunlight. Mount on the tank roof or at the foot of the tank. Configuration via local graphical menu and built-in buttons OR remotely from TankMaster. Wide ambient temperature range (-50°C to +70°C). Low power consumption (9-32 VDC, 30 mA nominal). Used wherever an operator needs immediate visual access to live tank-gauging data without a control-room trip.

All-in-one tank monitoring hub — integrates a data concentrator, display, and communication unit into a single device for simplified inventory monitoring across multiple tanks. Connects up to eight HART-enabled level / pressure / temperature transmitters via HART Multidrop on a single twisted-pair cable (replacing eight separate cable runs). Outputs to TankMaster, TankMaster Mobile, or third-party hosts via Modbus TCP/IP and HART-IP. Designed for chemical, metals & mining, and food & beverage industries where the full 2410 / 2460 / Control Cabinet stack would be over-spec. The simpler, lower-cost alternative for inventory-management-focused tank monitoring.

Tank Hub — handles data communication between Rosemount field devices on one tank and the host (TankMaster or DCS). Supports an exhaustive list of legacy protocols for retrofit installations (TRL2 Modbus, RS485, 4-20 mA HART, Enraf, L&J Tankway, Varec Mark/Space, Whessoe, GPE, Sakura, Tokyo Keiso, WirelessHART). Powers Rosemount field devices on a FISCO-compliant intrinsically safe Tankbus. Two SIL-certified relays for high/low alarms. Integral digital read-out for level, ullage, signal strength, volume, average / spot temperatures, pressures, density, and flow. Single-tank or multi-tank versions. Up to 16 field devices and 10 tanks per multi-tank version.