fhg-1115流量传感器fhg-1115 美国omega

　　fhg-1115

　　流量与液位 ? 涡轮和叶轮流量计 ? 用于高粘度流体的容积式流量计 ? fhg-1112

　　screw gear flowmeter for high viscosity liquids

　　fhg-1112

　　pulsation-free measurement

　　lowest pressure loss for high viscosity

　　short response time

　　up to 1,000,000 centistoke viscosity

　　high accuracy and wide ranges

　　产品描述

　　fhg-1000 flowmeters measure the flow rate based on the screw pump principle. a pair of rotors fitted precisely into the housing constitutes the measuring element. an integrated gear and non-contact signal pick-up system detects the rotations of the measuring element and converts them to digital pulses. 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. 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.

　　sensor system explanation

　　the non-contact pick-up system consists of two gmr-bridges (sin/cos), which are located in a sensor unit in cartridge design. it detects the movement of the sensing gear and routes the sin/cos-signals to the preamplifier electronics. the preamplifier electronics digitize and amplify the sensor signals and multiply them by a high-resolution interpolator using adjustable settings. the square wave signals are bidirectional and can be utilized by any evaluating instrument as well as computers and plc-controls. the resolution is selectable in steps from factor 1 to 128. in case of an 1-channel evaluation, a separate directional signal is available. an adjustable pulse filter can offset and suppress negative flows (e.g. generated by vibrations) while still in the device. the frequency of the output signals is proportional to the flow (volume flow) and depends on the respective flowmeter size. the frequency range is from 0 to 100 khz. the preamplifier is protected against reverse polarity and incorrect connection. it is suitable for fluid temperatures of -30 to 120°c (-22 to 248°f) and is mounted directly on the flowmeter.

　　flowmeter selection

　　for the trouble-free, safe and reliable operation of the flowmeters, selecting the correct type and size is critical. because of the wide variety of applications and flowmeter designs, the technical data in the specifications are of a general nature. certain properties of the devices depend on type, size, and measurement range as well as the liquid to be measured. please contact the omega flow department for detailed information about the appropriate flowmeter for your particular application.

　　electronics

　　a special sensor system detects any movement of the pair of rotors or of the liquid column. for this purpose, a precision gear connected to a shaft of the rotor pair is scanned by a special magneto-resistive sensor. 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. the downstream electronics unit features a highresolution sin/cos-interpolator, which is adjustable with 10 different resolution factors. furthermore, a programmable signal filter is available as well, which can offset unwanted negative pulse sequences up to an adjustable degree. in addition, a signal for a separate direction detection, e.g. in case of a 1-channel evaluation, is provided by the electronics. optionally, this output can be used for the detection of excess flows and temperatures.

　　specifications

　　frequency range: 0 to 100 khz, adjustable

　　measurement accuracy: ±0.5% of measured value with viscosity of > 21 cst

　　repeatability accuracy: ±0.05% with same operating conditions

　　materials

　　gray cast iron model: en-gjs-400-15 (en 1563)/16 mn cr 5

　　stainless steel model: stainless steel 1.4305/1.4112, others available upon request

　　bearing fluid: dependent as anti-friction bearing or ssic/ wolfram carbide friction bearing

　　seal:

　　standard: fpm

　　optional: ptfe, nbr or epdm

　　fluid temperature: -30 to 120°c (-22 to 248°f)

　　viscosity range: 1 to 1.000.000 cst

　　installation position: any

　　supply voltage: 10 to 28 vdc

　　current consumption: 65 ma at 24 vdc unloaded

　　delay: < 8 μs

　　protection class: ip65

　　power supply

　　supply voltage: u = 10 to 28 vdc; reverse pole protection

　　current consumption: i0 = 65 ma (at 24 vdc); unloaded

　　delay: tv = 8 μs maximum (between scanning and measured value)

　　signal outputs

　　output signal shape: quadrature signals (a, b with 90° phase shift)

　　directional output: positive high (24v), negative low (0.8 to 1v)

　　error output: active high (24v), inactive low (0.8 to 1v)

　　maximum output frequency: 100 khz

　　signal voltage output: vss = 9 to 27 vdc (channel 1, channel 2, error/direction)

　　signal output: current iout = 300 ma maximum at 24 vdc (channel 1, channel 2)

　　注: comes complete with operator’s manual.

　　产品编号 产品描述

　　fhg-1112 flow range lpm (gpm) 0.5 to 120 (0.13 to 32), housing material cast iron, bearing type ball, flange connection sae metric ?' 6000 psi

　　fhg-1122 flow range lpm (gpm) 0.5 to 120 (0.13 to 32), housing material cast iron, bearing type hard l, flange connection sae metric ?' 6000 psi

　　fhg-1212 flow range lpm (gpm) 0.5 to 120 (0.13 to 32), housing material stainless, steel bearing type ball, flange connection sae metric ?' 6000 psi

　　fhg-1222 flow range lpm (gpm) 0.5 to 120 (0.13 to 32), housing material stainless steel, bearing type hard l, flange connection sae metric ?' 6000 psi

　　fhg-1114 flow range lpm (gpm) 1 to 500 (0.26 to 132), housing material cast iron, bearing type ball, flange connection sae metric 1?' 6000 psi

　　fhg-1124 flow range lpm (gpm) 1 to 500 (0.26 to 132), housing material cast iron, bearing type hard l, flange connection sae metric 1?' 6000 psi

　　fhg-1214 flow range lpm (gpm) 1 to 500 (0.26 to 132), housing material stainless steel, bearing type ball, flange connection sae metric 1?' 6000 psi

　　fhg-1224 flow range lpm (gpm) 1 to 500 (0.26 to 132), housing material stainless steel, bearing type hard l, flange connection sae metric 1?' 6000 psi

　　fhg-1115 flow range lpm (gpm) 4 to 1000 (1 to 264), housing material cast iron, bearing type ball, flange connection sae metric 2' 6000 psi

　　fhg-1117 flow range lpm (gpm) 10 to 3000 (2.6 to 793), housing material cast iron, bearing type ball, flange connection sae metric 4' 490 psi

　　fhg-cable recommended connection cable 5 m (16.4') long, m12 5-pin shielded, meter plug to stripped leads

　　fhg-1112

　　fhg-1114

　　fhg-1115

　　fhg-1117

　　fhg-1122

　　fhg-1124

　　fhg-1212

　　fhg-1214

　　fhg-1222

　　fhg-1224

　　fhg-1115

　　fhg-1115流量传感器fhg-1115 美国omega

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