Due to use of hydrogen, extremely low-temperature measurement during transport and storage is gaining an ever-greater relevance. For this application, with the CryoTemp design,WIKA provides the most suitable option for all relevant temperature measuring instruments.
In laboratory trials, resistance thermometers (Pt1000) and thermocouples (type E) were tested for their suitability in cryogenic applications. The special design of the CryoTemp features a high accuracy of +/− 3 Kelvin at minus 253°C

Special features
■ Sensor ranges from -196 ... +600 °C [-320 ... +1,112 °F]
■ For many variants of temperature transmitters including field transmitter
■ For mounting in all standard thermowell designs
■ Spring-loaded measuring insert (replaceable)
■ Explosion-protected versions (option)

By calculating velocity ratios between two or more ultrasonic paths, the simply constructed ultrasonic flow meter provides reliable gas flow measurement. Additional measured variables, such as sound velocity, signal-to-noise ratio or signal strength, are available for condition monitoring. For applications requiring integrated volume conversion, pressure and temperature sensors can be connected. The flow meters are certified intrinsically safe for zone 0 in accordance with ATEX/IECEx.

Special features
■ Patented broadband continuous-wave technology
■ Simultaneous transmission on two or more paths
■ No pressure drop and no wear parts
■ Intrinsically safe design
■ Approved for custody transfer (MID MI-001, OIML R137-1 and -2)

Whether the hydrogen is produced by conventional methods or based on renewable energies, we provide solutions for the entire value chain of the hydrogen industry.

Pressure, temperature, level, flow

NEW
Pressure sensors for Hydrogen: Alternative to Gold plating

A new technology prevents signal drift in electronic pressure sensors used for hydrogen measurement. Instead of costly gold coating, a layer of titanium nitride is used, which is more cost-effective and robust. This layer protects the sensor‘s resistors from hydrogen‘s negative effects, ensuring accurate measurements even at high temperatures.

The model DTG-30 measures, continuously and in real time, the density and temperature of gases. This enables gas monitoring in combustion processes, quality control of gases and determination of concentrations in gas mixtures. It also allows improved flow measurement.

In addition to these measurements, the sensor calculates a confidence factor in real time. This factor gives insight into the quality and validity of the measurements.

Special features

■ Real-time monitoring of the density and temperature of gas mixtures
■ Easy integration, compact design
■ Resistant wetted parts from stainless steel 316L
■ Suitable for hazardous areas (ATEX- and IECEx-certified, zone 0 and FM-certified Class I Div I)
■ Patented design allowing for fast response time and high repeatability

The magnetic level gauge model BNA consists of a bypass chamber, which, as a communicating tube, is connected laterally to a vessel via at least 2 process connections. Through this type of arrangement, the level in the bypass chamber corresponds to the level in the vessel. The float with a built-in permanent magnetic system, which is mounted within the bypass chamber, transmits the liquid level, contact-free, to the magnetic display mounted to the outside of the bypass chamber.

Special features
■ Process- and procedure-specific production
■ Operating limits:
- Operating temperature: T = -196 ... +450 °C
- Operating pressure: P = Vacuum to 400 bar
- Limit density: ρ ≥ 340 kg/m3
■ Wide variety of different process connections and materials
■ Mounting of level transmitters and magnetic switches possible as an option
■ Explosion-protected versions

Due to its one-piece design, the model IVM monoflange can withstand high overpressures. It ensures a robust and compact mounting of the measuring instrument directly to the process flange.

Special features
■ Design temperature down to -196°C [-320°F]
■ Type approval certified for shipyards (ship class certified) according to the request
■ Extended bonnet body with sealing packing in the upper part to allow a suitable heat exchange
■ Smooth valve actuation, even under high pressure, leads to fault-free operation and long service life
■ Metal valve seat with leak-tested tightness in accordance with ISO 5208 leakage rate A.

This high-temperature thermocouple with a gas-tight sapphire protection tube has been specifically developed for use in hydrogenous atmosphere.
Through the monocrystalline structure, the sapphire protects the noble metal of the thermocouple from poisonous toxic media in the aggressive process atmosphere.

Special features
■ Cost saving by non-purge system
■ Reduction of unplanned downtimes
■ Increased safety against escape of toxic media through double sealing system
■ High variance of thermowell / protection tube materials
■ High process safety with processes up to 1,700 °C [3,092 °F]

The IIoT-capable model PGW2x.100 pressure gauge finds its use wherever the process pressure has to be indicated on-site and, at the same time, centralised, web-based remote monitoring is required.
The model PGW2x.100 is based on a fully welded and robust Bourdon tube measuring system. It therefore combines the mechanical measuring system with electronic signal processing.
Battery-operated wireless transmission via LoRaWAN^® (“Long Range Wide Area Network”) is based on LPWAN technology (“Low Power Wide Area Network”) to enable high transmission ranges and long battery life.

Special features
■ IIoT-capable measuring instrument with mechanical on-site indication
■ Battery-operated LoRaWAN® wireless transmission based on LPWAN technology
■ High transmission range up to 10 km [6 mi] with long battery life (up to 5 years)
■ Stainless steel version, model PGW23.100 or Monel version, model PGW26.100
■ Measuring ranges from 0 … 0.6 to 0 ... 1,600 bar [0 ... 10 to 0 ... 20,000 psi] as well as vacuum and +/- measuring ranges

The EMICOgauge instrument hook-up, consisting of pressure gauge and instrumentation valve, minimises the number of leakage points and thus reduces the risk of media escaping into the environment.
During mounting, the 360° swivel connection enables quick alignment of the pressure gauge with simultaneous pressure sealing. With this design, maintenance and dismounting of the pressure gauge and valve are also easy. WIKA can guarantee the leak tightness of the assembly for up to 20 mounting and dismounting operations.
Special features
■ Safety version with solid baffle wall (Solidfront) designed in compliance with the requirements of EN 837-1 and ASME B40.100
■ Excellent load-cycle stability and shock resistance
■ With case filling (model 233.30) for applications with high dynamic pressure loads and vibrations
■ EMICOgauge version, to avoid fugitive emissions
■ QR code on dial links to instrument-specific information

In order to avoid any damage to the thermowell during operation due to mechanical loads, a wake frequency calculation per ASME PTC 19.3 TW-2016 is recommended for critical process conditions. In case of a calculation with negative results, the only constructive solution so far was to shorten the thermowell stem or to increase the root and tip diameter, accepting a longer response time of the thermometer. The only other alternative up to now was to use a support collar to stabilise the thermowell stem inside the flange nozzle. This variant required an on-site machining of the collar to assure an interference fit in flange nozzles.
The ScrutonWell® design reduces the amplitude of oscillation by more than 90 % ¹⁾ and allows an easy and fast installation of the thermowell without support collar, and thus without expensive and time-consuming rework on site.
The WIKA ScrutonWell® design has been tested and approved by the independent laboratories TÜV NEL (Glasgow) and the Institute for Mechanics and Fluid Dynamics (Technical University of Freiberg).
The ScrutonWell® design can be used for all kind of solid-machined thermowells with flange connection, in Vanstone design or for weld-in or threaded process connection.
This helical design has been used successfully for decades in a wide variety of industrial applications to effectively suppress vortex-induced vibration excitation.
Special features
■ Thermowell with vibration reduction according to Scruton (Patent, property right: PCT/EP2019/071397)
■ The damping of vibrational excitation by helical strakes is a recognised state of the art in a wide variety of industrial applications
■ Easier and more cost-effective installation of the thermowell without any machining of the collar or nozzle compared to the conventional support of the thermowell with support collar
■ Optimised root design for improved bending strength

Needle valves separate the process from measuring instruments such as pressure gauges, switches or transmitters. By closing this valve the instrument can be safely dismounted for service work like recalibration or replacement.

Special features
■ Design temperature down to -196°C [-320°F]
■ Type approval certified for shipyards (ship class certified) on request
■ Extended bonnet body with sealing packing in the upper part to allow a suitable heat exchange
■ Smooth valve actuation, even under high pressure, leads to fault-free operation and long service life
■ Metal valve seat with leak-tested tightness in accordance with ISO 5208 leakage rate A