WIKA UPT-20 Universal Process Pressure Transmitter

Overview

The WIKA UPT-20 universal process pressure transmitter is an intelligent sensor developed for applications that demand precise, temperature-compensated pressure measurement across a wide range of process industries. The WIKA UPT-20 features a measuring cell built from stainless steel 316L or a high-quality Elgiloy® combination, a case rotatable by 330°, and a large LC display readable from up to 5 meters, making it equally suited to control-room panels and field-mounted skids across pharmaceutical, food, chemical, and general process plants.

With engineering support in Muscat, Seven Star LLC supplies the WIKA UPT-20 process transmitter to instrumentation engineers, EPC contractors, and plant maintenance teams across Oman and the wider GCC, with lead time confirmed at quotation for time-sensitive plant turnarounds.

Measurement Principle

The WIKA UPT-20 derives its pressure signal from a piezoresistive measuring cell whose output is digitally linearized and temperature-compensated by onboard microelectronics before being converted to a standard 4…20 mA output. Because the transmitter measures and corrects for temperature drift continuously, the UPT-20 maintains accuracy across a wide ambient and process-temperature envelope, and its adjustable turndown of up to 100:1 lets engineers reconfigure a single physical unit to register exact process values across substantially different pressure spans without a hardware change.

Communication with the sensor is available both through conventional 4…20 mA analogue loops and through the HART® protocol, meaning the same measuring cell can be installed on legacy analogue panels or on modern distributed control systems, and reconfigured on-site via the display and operating module or remotely through the control system itself. This flexibility means no re-piping and no additional wiring is required when a plant migrates from analogue to digital asset management, and it eliminates the mechanical linkages and moving parts found in older bourdon-tube gauge-style transmitters.

The WIKA UPT-20 supports a broad pressure span selection, with gauge pressure models covering ranges from 0…0.4 bar up to 0…4,000 bar and absolute pressure versions to 40 bar, so a single transmitter family can be specified across low-pressure utility loops and high-pressure hydraulic or wellhead service alike. Standard measured accuracy is 0.15% of span, with an enhanced 0.1% option available where tighter custody-grade measurement is required, and long-term stability of 0.1% of span per year on ranges of 40 bar and above keeps recalibration intervals long for hard-to-access installations. Response is equally fast, with a settling time of 60 milliseconds and a 20-millisecond internal refresh rate, while adjustable damping from 0 to 99.9 seconds lets technicians smooth out turbulent or pulsating process signals without installing a separate snubber.

Engineering Design of the WIKA UPT-20

The WIKA UPT-20 is offered in either an electrically conductive plastic case for general industrial duty or a stainless steel cast case – optionally electropolished – for hygienic and corrosive process environments, both rated IP66/IP67 for outdoor and washdown installations. The case rotates a full 330° and the LC display can additionally be repositioned in 90° steps, so the transmitter can be mounted in virtually any orientation on a manifold or process connection while keeping the display legible to an operator walking the unit.

Process connections include 1/4 NPT male, 1/2 NPT female, 1/2 NPT male and additional standards per the datasheet, while the electrical connection is a 1/2 NPT female conduit entry suited to armored cable installations common on GCC industrial sites. Approvals for hazardous-area use extend the UPT-20’s applicability to classified zones in refineries, tank farms, and offshore platform topsides, and the simple menu navigation on the display module allows field technicians to reconfigure range, damping, and output without specialized tools.

Overpressure protection is similarly matched to range, with safety factors of up to three times the upper range limit for spans at or below 40 bar, tapering to 1.25 times for the highest 4,000 bar variants, giving specifying engineers a clear safety margin for surge and water-hammer events. The transmitter itself is compact and light, weighing approximately 1.3 kg in the conductive plastic case and 2.5 kg in the stainless steel case, and without the display option it can operate from −40°C up to +85°C ambient, extending to +120°C process temperature and, with the optional cooling element, up to 150°C in restricted ambient conditions – a useful margin for steam and hot process lines found in Oman’s refining and petrochemical plants. Hazardous-area approvals for the WIKA UPT-20 include ATEX, IECEx, EAC, and Brazilian INMETRO certification, covering zones 0 to 2 for gas and dust atmospheres across temperature classes T3 to T6.

Key Features

The WIKA UPT-20 pressure transmitter combines industrial ruggedness with configuration flexibility that suits both greenfield and brownfield instrumentation projects in Oman and the GCC.

• Stainless steel 316L or Elgiloy® measuring cell with integrated temperature compensation for stable accuracy.
• 4…20 mA output with HART® protocol for both analogue and digital process-control integration.
• Adjustable turndown up to 100:1 lets one physical unit cover multiple pressure ranges.
• Case rotatable 330° with LC display adjustable in 90° steps for readability in any mounting orientation.
• Large LC display legible from up to 5 meters, reducing the need for separate local gauges.
• Choice of conductive plastic or electropolished stainless steel case for hygienic and corrosive services.
• IP66/IP67 protection rating suited to outdoor GCC installations and washdown duty.
• Approvals for hazardous areas support deployment in classified refinery and offshore zones.

Industrial Applications

The WIKA UPT-20 is deployed across control and process technology, machine building, pharmaceutical and hygienic industries, food processing, and chemical and petrochemical plants, wherever a robust, field-configurable pressure transmitter with local indication is required. In Oman, typical installations include process-pressure monitoring at petrochemical and refining complexes, hygienic pressure measurement on food and beverage filling lines, and utility pressure monitoring at district cooling and desalination facilities where reliable HART®-based diagnostics reduce unplanned downtime.

Backed by genuine manufacturer documentation, Seven Star LLC distributes the UPT-20 process transmitter to EPC contractors and plant operators throughout Muscat, the Sohar and Salalah industrial and free zones, and neighboring GCC markets, supporting hazardous-area refinery instrumentation, hospital utility systems, and hospitality-chain HVAC plant rooms that require dependable pressure measurement with local calibration and support.

Technical Specifications

The table below summarizes the core specifications relevant to sizing and installing the WIKA UPT-20 process pressure transmitter.

Request a Quote for WIKA UPT-20 Universal Process Pressure Transmitter

Seven Star LLC invites instrumentation engineers and EPC contractors across Oman and the GCC to submit a formal RFQ for the WIKA UPT-20 universal process pressure transmitter. Working closely with plant engineers in the region, we supply on request with lead time confirmed at quotation, provide the full technical datasheet PE 86.05 on request, and connect buyers directly with our instrumentation division for range selection, hazardous-area certification guidance, and HART® configuration support.

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