About Sami Instruments (WIKA)
Sami Instruments (WIKA) For over 75 years has been a renowned partner and competent specialist for any task in the field of measurement technology. With steadily growing efficiency, innovative technologies are applied when developing new products and system solutions.
The reliability of the products and the readiness to face all challenges of the market have been the key factors for WIKA achieving a leading position in the global market. Within the WIKA Group, currently over 10,200 employees are dedicated to maintaining and improving technology in pressure, temperature, force, and level measurement, and also in the fields of flow measurement, calibration, and SF6 gas solutions.
Over 1,500 experienced employees within the sales department consult customers and users competently on a partnership basis. More than 300 engineers and technicians are searching continually to provide innovative product solutions, improved materials, and profitable production methods. In close cooperation with recognized universities, institutes, and industrial companies, solutions for specific applications are developed.
Think global, act local: Following the founding of the first subsidiary in 1960, there are now 43 subsidiaries within the WIKA Group. These include state-of-the-art production facilities in all central markets, maintenance facilities, installation equipment, and teams for additional services. WIKA is also represented around the world by numerous sales agencies. In order to offer the customers a comprehensive product range, the portfolio is constantly being expanded through strategic acquisitions.
The Products of Sami Instruments (WIKA)
Ultrasonic flow meters for accurate gas flow measurement
In-line ultrasonic flow meters provide accurate gas flow measurement by calculating the transit time difference ratios between ultrasonic paths into a pipe. WIKA ultrasonic flow meters are intrinsically safe (ATEX/IECEx) and approved for custody transfer (MID 2014/32/EU, OIML R137). These solutions ensure low power consumption and easy and quick installation and commissioning and are suitable even in the most demanding applications. Sound velocity, signal-to-noise ratio, and other additional measured variables are available for condition monitoring, as well as connectable pressure and temperature sensors for achieving integrated volume conversion.
Magnetic-inductive flow meters for accurate conductive liquids measurement
WIKA magnetic-inductive flow meters provide precise measurements of conductive liquids offering many important advantages compared to other technologies, such as exceptional long-term stability, maximum process reliability, no pressure drop, and zero maintenance. WIKA magnetic-inductive sensors are available in different versions in terms of body and lining materials, pipe connections, and applications (from economical solutions for irrigation up to highly accurate custody transfer as per MID MI-001, OIML R49). They can be coupled to WIKA digital signal converters, supplied in compact and separated configurations, able to deliver accurate flow measurement and manage communication with the external control systems, even in the absence of a power supply. With no moving or intrusive parts these WIKA instruments ensure fast response time and ease of installation.
Flow switches are used for the display and monitoring of the flow of liquid and gaseous media. The instruments feature high switching accuracy and functional safety, low switch hysteresis, and continuous switch point setting by the user.
Level indicators are used for continuous indication of the level. The functional principle is based on a magnet connected to a float transmitting the level, without an additional supply voltage, to an indicator bar that consists of magnetic rollers or flaps. In addition, various magnetic switches and level sensors can be fitted as additional accessories.
Submersible pressure sensors
The submersible pressure transmitter, sometimes also referred to as a level probe, is a specific design of pressure sensor for hydrostatic level measurement in tanks, wells, shafts, and boreholes. For this, the submersible pressure transmitter is submerged directly in the liquid to be measured, and positioned as close as possible to the bottom. There, the submersible pressure sensor measures the hydrostatic pressure, which enables a direct conclusion regarding the current level, i.e. the height of the liquid column above it.
Glass level gauges
Continuous and direct level indication without supply voltage: glass level gauges from WIKA consist of a gauge body that constitutes the main element. A liquid channel is machined into it. Other elements are valve heads, process connections, glasses, and/or mica shields. The use of mica shields is recommended for certain applications and high temperatures.
Digital pressure gauges
Precision digital pressure gauges are suitable for stationary and also mobile measurement and display of pressures. In addition, a digital pressure gauge can be used as a pressure reference and enables the easy testing, adjustment, and calibration of other pressure measuring equipment directly on-site. Through efficient measuring cells with electronic linearisation of the characteristic curve, high accuracy is achieved.
Precision pressure measuring instruments
Precision pressure measuring instruments are electrical measuring systems that convert pressure into an electrical signal and optionally visualize it. Precise pressure transmitters and process transmitters are used for the monitoring and control of particularly sensitive processes. Due to the low, DKD/DAkkS certified measurement uncertainty of down to 0.008 % of the entire measuring chain, the particularly accurate instruments find their primary applications as a factory/working standard for testing and/or calibrating a variety of pressure measuring instruments.
WIKA offers various different designs of inclination sensors. Inside the inclination sensors is a dielectric fluid, which – like a spirit level – aligns horizontally by gravity, without gravitational acceleration errors. The measurements are independent of gravitational fluctuations and therefore reproducible at every location. By detecting the differential capacitance, the inclination angle is calculated. With this technology, measurement is possible up to 360°. Accuracies of <0.1 % can be achieved with this. They are also available for redundant and multi-axis applications and with flameproof enclosures. WIKA inclination sensors offer high ingress protection, are suitable for harsh environments, and can be used in temperature ranges from -40 °C up to 80 °C.
Accessories – force
The installation of force transducers requires a lot of know-how and thoroughness so that the components measure safely and accurately. In order to achieve the best possible results with WIKA force measuring instruments, it is recommended that the corresponding accessories are used. This enables the optimum solution for a wide variety of tasks. The available product portfolio is versatile and extensive. It includes weighing modules, load feet, swivel heads, compression pieces, cables, rocker pins, chargers, and much more. Feel free to contact us: We’ll support you in choosing the right products.
Ring force transducers
When the compression force transducer has a through the hole, it is called a ring force transducer (donut load cell) or a force measuring ring. These force transducers are extremely robust and are suitable for the detection of very high (static) forces. Furthermore, they are suitable for many installation situations. The ring geometry is used in force measurement for a wide variety of spatial conditions. The main fields of application are found in spindle presses, screw force measurement, or even in geo technology. WIKA offers electrical and hydraulic ring force transducers in diameters from 12 millimeters up to 430 millimeters as well as in various installation heights. Discover our portfolio now.
Temperature transmitters convert the input signal from a wide range of sensors, such as resistance sensors and thermocouples, but in some cases also from potentiometers, into a standardized output signal (e.g. 0 … 10 V or 4 … 20 mA). With digital temperature transmitters, the sensor type and the measuring span can be freely configured, along with many further options such as error signalization or measuring location identification.
The compact temperature controllers from WIKA offer display, control, and monitoring of temperatures. The configuration of the sensor input is made via the multi-function input. Resistance thermometers, thermocouples, and standard industrial signals, such as 4 … 20 mA, serve as the input variable of a temperature controller. The monitoring output can be set either as a relay (for slow control), as a logic level for the control of electronic solid-state relays (for fast control and high current loads), or as a continuous 4 … 20 mA output.
Temperature switches are used in a variety of industrial and technical processes. If a preset temperature is reached, then the temperature switch opens or closes a corresponding switch contact. Depending on the requirements, mechanical or electronic switches can be used. In addition to electronic temperature switches and bimetal temperature switches, WIKA’s wide range also includes air velocity meters and frost protection thermostats.
Process transmitters differentiate themselves from pressure sensors through their increased range of functionality: They feature integrated displays, offer high measurement accuracies and freely scalable measuring ranges, communicate via digital bus signals and can be delivered with a multitude of case variants. Through connection to diaphragm seals, WIKA process transmitters are also suitable for the harshest operating conditions.
A pressure switch opens or closes a corresponding switch contact as soon as a preset pressure is reached. Depending on the requirement and the design, pressure switches are used with mechanical or electronic switch contacts, with or without displays, and with various setting possibilities. Pressure switches are used in a variety of industrial and technical processes – in WIKA’s wide selection, you will find the right version for each application.
A pressure sensor (or pressure transmitter) converts the physical quantity ‘pressure’ into an industry-standard signal. In addition to a wide range of pressure sensors for general industrial applications, we offer special versions for refrigeration/air conditioning technology, the food industry, mobile working machines, medical gases, and also the semiconductor industry. Our pressure sensor portfolio covers accuracies from 0.05 %, measuring ranges from 0.05 bar up to 15,000 bar, digital interfaces such as CANopen and IO-Link, and also various international approvals, including for hazardous areas.
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