How does one specify the switch point of a float switch?
In the specification of the switch points of a float switch, misunderstandings always lead to unsuitable product designs. How one correctly specifies the switch point of a float switch will be explained here.The basic prerequisite for the correct specification and the manufacturing to requirements of a float switch is that both the customer and manufacturer […]
Connection of an Ex nA digital indicator to an Ex i sensor
Is it possible for connecting a non-incendive Ex nA digital indicator to an intrinsically safe Ex i sensor in hazardous areas? Frequently, signals from pressure sensors that not have a built-in digital indicator for the measured value are connected to external digital indicators. These digital indicators enable an on-site display of the measured value and, […]
Proof of intrinsic safety for an ATEX-approved pressure sensor
In the European Union, the ATEX Directive 94/9/CE is compulsory for plants or machines, in which hazardous substances are processed or produced. It states that only ATEX-approved instruments must be used in hazardous areas within Europe.One frequently selected explosion protection method for pressure sensors is intrinsic safety. Guilt cerified for hazardous areas, i.e. an ATEX-approved […]
Differential pressure switches ensure safe filter operation
Differential pressure switches take on central tasks within monitoring and control. A manufacturer of filter systems for the process industry uses the WIKA model DE switches with an attached valve manifold for these functions. The decision in favour of this solution was based on two reasons: on the one hand, the quality of the measurement […]
The response time behaviour of pressure sensors: How is the response time defined and what’s this is of the rise time?
The response time of pressure sensors is reflected in a large number of varying parameters, like the response time, settling time or rise time in specifications or data sheets. Generally, it usually is assumed that the response time means the interval required by the output signal of a pressure sensor to display a big change […]
Vendor Managed Inventory
Through Vendor Managed Inventory (VMI), the capital tied up in the customer’s warehouse is minimised, the availability of bought-in parts is maximised at the customer (maximising the levels of service) and thus the typical materials planning problems are solved.Typical materials planning problemsWith the supplier, precise information on the actual demand of his customer is not […]
How does a calorimetric flow switch work?
If the current presence of flow in a piping system should be monitored, a calorimetric flow switch ? generally known as a flow monitor ? is frequently used. But how does a calorimetric flow switch actually work? The following post explains this in greater detail.Calorimetric flow switches, which are generally generally known as thermal flow […]
Hiking against dementia
Dementia is one of the main causes of disability in later life, with over 850,000 people currently diagnosed with the disease in the UK. A team of twelve from WIKA UK took part in a 25-kilometre march organised by the Alzheimer’s Society with the motto “United we trek against dementia”.Starting in Richmond, Surrey, the trek […]