Zhejiang Sealand Technology Co., Ltd.is a trustworthy supplier of Oil Mass Flow Meter, Oil Mass Flowmeter, Oil Coriolis Flow Meter, Oil Coriolis Flowmeter, Oil Coriolis Flow Meter, ATEX, IECEx & CE approved.
Operating Environment
Atmospheric pressure: 85kPa~106kPa
Ambient temp.: Refer to Chapter 1.6
Relative humidity: 5%~95%, non condensing
Operating conditions
Fluid: Liquid/Gas
Nominal pressure: 4MPa or 25MPa (Customizable)
Supply voltage: AC 85~265VAC, 50/60Hz or DC 12~24VDC(±5%), 5W
Outputs: Pulse 0~10KHz, RS-485, 4-20mA & HART (optional)
The meter consists of mass flow sensor and transmitter. Mass flow sensor is a phase-sensitive resonant sensor based on Coriolis effect, composed
of vibration tube, signal detector, concussion driver, structural support, shell, etc.
Mass flow transmitter is a micro-programming-centered electronic system, which supplies
thrust to sensor, transforms sensor signal into mass flow signal & others, and improves
accuracy in accordance with temperature parameter.
Oil Mass Flow Meter, Oil Mass Flowmeter, Oil Coriolis Flow Meter, Oil Coriolis Flowmeter, Oil Coriolis Flow Meter Zhejiang Sealand Technology Co., Ltd. , https://www.sealandflowmeter.com
Fluid temperature: -200°C~+200°C (higher temp. model is customizable)
It`s composed of switching power supplier, guard grating, core processor board, display
module, etc., installed in a ex-proof junction box. Switching power supply offers power for
transmitter; safe grating isolates sensor and transmitter intrinsically; core processor detects
& processes sensor phase signal, sends mass flow signal and process communication.
Error Analysis of Straightness Measurement by Level Meter
Measuring the straightness with a spirit level is a commonly used detection method in machining. There are two common operational errors: (1) The level is not strictly along a straight line during measurement, resulting in measurement errors caused by the horizontal error of the workpiece installation. Before making a straightness measurement on a workpiece, people often only pay attention to leveling the workpiece in the measurement direction to ensure that the level bubble does not exceed the indication range during each measurement, but ignores the installation level in the vertical direction. As shown in Fig. 1, the ruler working surface has a mounting horizontal error δ (div/1000 mm) in the direction perpendicular to the measurement, if using a level in this state