![]() As the viscosity increases, the starting displacement of the turbine flowmeter will decrease. Output Signal Shape: Quadrature signals (A, B with 90° phase shift)ĭirectional Output: Positive high (24V), negative low (0.8 to 1V)Įrror Output: Active high (24V), inactive low (0.So how big is the effect of the medium viscosity on the turbine flowmeter? Let’s talk about this next.ġ. Supply Voltage: u = 10 to 28 Vdc reverse pole protectionĬurrent Consumption: I0 = 65 mA (at 24 Vdc) unloadedĭelay: tV = 8 µs maximum (between scanning and measured value) Stainless Steel Model: Stainless steel 1.4305/1.4112, others available upon requestīearing Fluid: Dependent as anti-friction bearing or SSIC/ wolfram carbide friction bearingįluid Temperature: -30 to 120☌ (-22 to 248☏)Ĭurrent Consumption: 65 mA at 24 Vdc unloaded Repeatability Accuracy: ☐.05% with same operating conditions Measurement Accuracy: ☐.5% of measured value with viscosity of > 21 cSt Optionally, this output can be used for the detection of excess flows and temperatures.įrequency Range: 0 to 100 kHz, adjustable in case of a 1-channel evaluation, is provided by the electronics. In addition, a signal for a separate direction detection, e.g. Furthermore, a programmable signal filter is available as well, which can offset unwanted negative pulse sequences up to an adjustable degree. The downstream electronics unit features a highresolution sin/cos-interpolator, which is adjustable with 10 different resolution factors. The scanning sensor includes two GMR-bridges (sin/cos) and is housed in a removable stainless steel cartridge case together with a signal conditioning and amplifier unit. For this purpose, a precision gear connected to a shaft of the rotor pair is scanned by a special magneto-resistive sensor. Please contact the Omega Flow Department for detailed information about the appropriate flow meter for your particular application.Ī special sensor system detects any movement of the pair of rotors or of the liquid column. Certain properties of the devices depend on type, size, and measurement range as well as the liquid to be measured. Because of the wide variety of applications and flow meter designs, the technical data in the specifications are of a general nature. It is suitable for fluid temperatures of -30 to 120☌ (-22 to 248☏) and is mounted directly on the flow meter.įor the trouble-free, safe and reliable operation of the flow meters, selecting the correct type and size is critical. The preamplifier is protected against reverse polarity and incorrect connection. The frequency range is from 0 to 100 kHz. The frequency of the output signals is proportional to the flow (volume flow) and depends on the respective flow meter size. generated by vibrations) while still in the device. An adjustable pulse filter can offset and suppress negative flows (e.g. In case of an 1-channel evaluation, a separate directional signal is available. The resolution is selectable in steps from factor 1 to 128. The square wave signals are bidirectional and can be utilized by any evaluating instrument as well as computers and PLC-controls. The preamplifier electronics digitize and amplify the sensor signals and multiply them by a high-resolution interpolator using adjustable settings. It detects the movement of the sensing gear and routes the sin/cos-signals to the preamplifier electronics. ![]() The non-contact pick-up system consists of two GMR-bridges (sin/cos), which are located in a sensor unit in cartridge design. The fluid volume put through within one main rotor rotation is the rotation volume, which is divided by the sensing gear and digitized, processed and output in the sensor module. ![]() Together with the housing walls, the rotor edges form closed measuring chambers in which the fluid is transported from the inlet to the outlet side. An integrated gear and non-contact signal pick-up system detects the rotations of the measuring element and converts them to digital pulses. ![]() A pair of rotors fitted precisely into the housing constitutes the measuring element. FHG-1000 flow meters measure the flow rate based on the screw pump principle.
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