DELTAFLUID - Measuring up to your expectations

For a direct reading of temperature We offer thermometers with expansion of liquid or gas

The resistance probe offers a measurement of great accuracy and very good long-term stability. A Pt 100 Ohm probe corresponds to a platinum resistance whose initial value is 100 Ohms for a temperature of 0°C. The measuring element consists of wound platinum wires whose resistance varies according to the temperature. The resistance / temperature correspondence is documented in the IEC 60751 standard. The temperature probe is often delivered with a connection head (see photo opposite).

The thermocouple probe is characterized by a fast response time and is perfectly suited for high or very high temperature operation. The temperature sensor is often delivered with a connection head (see photo opposite).

Tubular or welded thermowells are made from tubes and are suitable for applications without significant stress. Drill barstock thermowells are machined from a barstock; they are more resistant and are suitable for severe process conditions in terms of high temperature and pressure or high flow rate. GENERAL DATA Material: Standard: 304L / 316L stainless steel, others according to your application. All types of fluids in contact Coating possible for corrosive fluids

The pyrometric assemblies are perfectly suited for high temperature applications: they are complete measuring assemblies with a mineral insulated thermocouple or a ceramic insulated protection and equipped with an outer protective mechanical tube. They are fitted with electrical connection devices and mechanical fasteners. The ceramic sleeve authorizes temperature measurement up to 1600°C, even 1800°C in some cases.

The function of a restriction orifice is to limit a flow rate or to reduce a pressure in a pipe. It is calibrated according to the technical specifications of the installation so as to reach the desired pressure or flow rate; according to the values ​​to be achieved, either simple restriction orifices (single-hole or multi-hole) or multi-stage restriction orifices can be proposed. It advantageously replaces a simple valve: simpler, more economical, more robust and maintenance free.

Orifice diameter: dimensioned according to the fluid, to the pressure drop to be achieved and to the flow going through the restriction. Plate thickness: calculated taking into account the pressure drop generated by the plate and the diameter of the pipework to prevent plate deformation. See more details in our Frequently Asked Questions. Noise: control of the estimated noise level at 1 m. In case of high noise level, refer to the multi-hole plate. Cavitation: The cavitation level is checked for each plate. In the presence of cavitation, a multi-stage restriction orifice alternative may be proposed depending on the operating conditions of the restriction. For more information on cavitation, see our Frequently Asked Questions. Critical flow or choked flow: if the fluid reaches its maximum speed when passing the restriction, its flow can not increase. A multistage solution can be proposed depending on the operating conditions of the restriction. For more information on critical flow

Orifices: dimensioned according to the fluid, the pressure drop or the flow to be achieved going through the restriction. Plate thickness: calculated taking into account the pressure drop generated by the plate and the diameter of the pipework in order to avoid a deformation of the plate. For more details, see our Frequently Asked Questions. Noise: the number of orifices is determined according to the level of noise not to be exceeded. The maximum noise level depends on the operating conditions: limited to 85 dB(A) by the regulatory body for an average daily exposure in continuous operation. Intermittent or emergency operation - acceptable upper values ​​(see corresponding regulations). If the noise level is still too high, it is possible to switch to a multi-stage restriction orifice. Cavitation: the cavitation level is checked for each plate and the orifices are calculated to avoid cavitation. For more information on cavitation, see our Frequently Asked Questions.

Plate mounting: plates mounted in serie - optimized plate spacing for each unit from 1D to 5D (D, pipe internal diameter). Number of plates: calculation of the number of stages optimized according to the specifications of the application, each plate making it possible to reduce the maximum pressure while avoiding cavitation and critical flow phenomena. For more details, see our Frequently Asked Questions. Noise: check of the noise level of the complete unit estimated at 1 m. Multi-holes plates reduce the noise level per stage. Solutions of external envelopes can be recommended if the noise remains too high (consult us). Thermodynamics: the thermodynamic properties of the fluid are taken into account for the calculation of each stage: change of state, temperature, composition and density of the mixture, viscosity, compressibility factor. 3D simulation: possibility of a numerical simulation to complete the analytical calculations.

Many piping and instrumentation accessories are necessary to implement the flow measurement of a fluid in a pipe: the shutters to isolate the existing pipe in case of intervention, the flanges to fix the primary elements and to connect to the existing process, flow straighteners or flow conditioners to stabilize the flow before the measurement but also condensation pots for steam measurement and finally manifold, pressure transmitter always mandatory for differential pressure flow measurement.