林瑾
@LinlinTohsaka
Followers
0
Following
7
Media
105
Statuses
115
Zhejiang Weidu Instrument specializes in precision flow measurement solutions with 7+ years of industry experience. Whatsapp/Wechat:+86 15088947290
Zhejiang Province, China
Joined March 2025
If you need to measure a low flow rate of a clean gas and want a direct mass flow reading without pressure/temperature compensation, a good choice is a: a) DP meter with an orifice plate b) Thermal mass flow meter c) Turbine meter d) Venturi meter
0
0
0
For a low-cost application to measure air flow in a lab, where only a visual indication is needed, the best choice might be a: a) Coriolis meter b) Vortex meter c) Rotameter (variable area meter) d) Ultrasonic meter WhatsApp/WeChat: +86 15088947290 #rotaryflowmeter
0
0
0
When selecting a flow meter for a high-accuracy billing application (custody transfer), the most critical factor is usually: a) Low cost b) High accuracy and repeatability c) Small size d) Ease of installation WhatsApp/WeChat: +86 15088947290 #rotaryflowmeter #gasflowmeter
0
0
0
Which of the following is NOT a common type of gas flow meter? a) Coriolis b) Ultrasonic c) Turbine d) Magnetic (Electromagnetic) WhatsApp/WeChat: +86 15088947290 #rotaryflowmeter #gasflowmeter #turbineflowmeter #gasmeter #flowmeter
0
0
0
What is the primary variable measured directly by most gas flow meters? a) Mass flow rate b) Volumetric flow rate at standard conditions c) Volumetric flow rate at operating conditions d) Gas density WhatsApp/WeChat: +86 15088947290 #rotaryflowmeter #gasflowmeter
0
0
0
Hi everyone! 👋 We’re excited to announce that Zhejiang Weidu Instrument Co., Ltd. will be exhibiting at the 28th ROS&GAS EXPO in St. Petersburg this October! 🇷🇺 🗓️ Dates: October 7-10, 2025 📍 Our Booth: W6.2 📧 sales03@weidu-flowmeter.com 🌐 【 https://t.co/49ImRhpAk2】
0
0
0
What does "turndown ratio" refer to in flow measurement? a) The ratio of inlet pressure to outlet pressure. b) The range of flow rates a meter can accurately measure, expressed as a ratio (e.g., 10:1). c) The ratio of mass flow to volumetric flow.
0
0
0
If a flow meter has a rangeability of 100:1 and a maximum flow of 1000 L/min, what is its minimum accurate flow? a) 1 L/min b) 10 L/min c) 100 L/min d) 0.1 L/min WhatsApp/WeChat: +86 15088947290 #rotaryflowmeter #gasflowmeter #turbineflowmeter #gasmeter #flowmeter
0
0
0
"Reynolds Number" is a dimensionless number important in flow measurement because it characterizes: a) The thermal conductivity of the gas. b) The flow regime (laminar or turbulent). c) The corrosiveness of the gas. d) The speed of sound in the gas. #flowmeter
0
0
0
What is the purpose of "pressure and temperature compensation" for a volumetric flow meter? a) To protect the meter from damage. b) To convert the measured volumetric flow rate to a standard mass or volumetric flow rate at base conditions. c) To increase the turndown ratio of the
0
0
0
"K-factor" in a turbine or vortex meter refers to: a) The thermal conductivity factor. b) The number of pulses generated per unit volume of fluid passing through the meter. c) a correction factor for gas composition. d) the meter's pressure rating. #turbineflowmeter #gasmeter
0
0
0
Hi everyone! 👋 We’re excited to announce that Zhejiang Weidu Instrument Co., Ltd. will be exhibiting at the 28th ROS&GAS EXPO in St. Petersburg this October! 🇷🇺 🗓️ Dates: October 7-10, 2025 📍 Our Booth: W6.2 📧 sales03@weidu-flowmeter.com 🌐 【 https://t.co/49ImRhp2uu】
0
0
0
A meter that measures flow by creating a pressure drop across a restriction is called a: A) Thermal Mass Flow Meter B) Differential Pressure (DP) Meter C) Positive Displacement Meter D) Ultrasonic Flow Meter WhatsApp/WeChat: +86 15088947290 #rotaryflowmeter #gasflowmeter
0
0
0
Which of these flow meters measures flow by creating a pressure drop across a restriction in the pipe? a) Thermal Mass Flow Meter b) Coriolis Flow Meter c) Orifice Plate Flow Meter d) Turbine Flow Meter WhatsApp/WeChat: +86 15088947290 #rotaryflowmeter
0
0
0
This type of flow meter measures the mass flow rate directly by using the Coriolis effect, where tubes are vibrated to detect phase shift caused by the flowing fluid. a) Vortex Shedding Meter b) Ultrasonic Flow Meter c) Coriolis Meter d) Rotameter
0
0
0
A Rotameter is a type of variable area flow meter. How does it indicate flow rate? a) By the rotation speed of a turbine b) By the frequency of vortices shed behind a bluff body c) By the height of a float in a tapered tube d) By the change in temperature of a heated element
0
0
0
Which flow meter is best suited for measuring very low flow rates of gases accurately? a) Large Orifice Plate Meter b) Thermal Mass Flow Meter c) Vortex Meter d) Ultrasonic Meter for large pipes WhatsApp/WeChat: +86 15088947290 #rotaryflowmeter #gasflowmeter
0
0
0
Hi everyone! 👋 We’re excited to announce that Zhejiang Weidu Instrument Co., Ltd. will be exhibiting at the 28th ROS&GAS EXPO in St. Petersburg this October! 🇷🇺 🗓️ Dates: October 7-10, 2025 📍 Our Booth: W6.2 📧 sales03@weidu-flowmeter.com 🌐 【 https://t.co/49ImRhpAk2】
0
0
0
Hi everyone! 👋 We’re excited to announce that Zhejiang Weidu Instrument Co., Ltd. will be exhibiting at the 28th ROS&GAS EXPO in St. Petersburg this October! 🇷🇺 🗓️ Dates: October 7-10, 2025 📍 Our Booth: W6.2 📧 sales03@weidu-flowmeter.com 🌐 【 https://t.co/49ImRhpAk2】
0
0
0
A meter that measures flow by creating a pressure drop across a restriction is called a: A) Thermal Mass Flow Meter B) Differential Pressure (DP) Meter C) Positive Displacement Meter D) Ultrasonic Flow Meter WhatsApp/WeChat: +86 15088947290 #rotaryflowmeter #gasflowmeter
0
0
0