ZN-BSL seriesTarget flowmeterSince the 1960s, it has been applied to industrial flow measurement, mainly for solving the flow measurement of high viscosity and low Reynolds number fluids. It has gone through two major development stages: pneumatic and electric meters. The SY-BSL seriesIntelligent target flowmeterIt is based on the original strain gauges Target flowmeter Based on the measurement principle, the latest capacitive force sensor is used as the measuring and sensitive transmission element, and a new type of flow measuring instrument is developed using modern digital intelligent processing technology.
The use of capacitive force sensors is the key to achieving high precision and stability in this new product, completely changing the various defects of strain gauge target flow meters such as large temperature drift, poor overload (impact) resistance, and static sealing points. It not only leverages the original technical advantages of target flow meters, but also has measurement accuracy comparable to volumetric flow meters. In addition to its unique anti-interference and anti impurity performance, it can replace the flow measurement problems that can be measured by conventional flow meters, especially in difficult flow measurement conditions such as small flow, high viscosity, easy coagulation and blockage, high temperature, low temperature, strong corrosion, and strong vibration, and has good adaptability. At present, it has been widely used for flow measurement in various fields such as metallurgy, petroleum, chemical industry, energy, food, and environmental protection.

1、 Principles and Characteristics
1. Structure
ZN-BSL series intelligent Target flowmeter It mainly consists of a measuring tube (housing), a new type of capacitive force sensor (including a blocking element), an accumulation display, and an output part. According to different media and working conditions, suitable capacitive force sensors must be selected. Therefore, providing accurate measurement objects and parameters by users and selecting appropriate capacitive force sensors by manufacturers are the key to whether the product can measure accurately. Its structure is shown in the figure:

·Dry calibration method can be used on-site, namely the weight hanging method. Single key operation can complete calibration;
·There are multiple installation methods to choose from, such as online plug-in, which has low installation costs;
·Equipped with integrated temperature and pressure compensation, directly output quality or standard square;
·It has optional small signal removal, non-linear correction, and selectable filtering time;
·Capable of accurately measuring gas and liquid flow rates under various working conditions of room temperature, high temperature of 500 degrees, and low temperature of -200 degrees;
·Accurate measurement, with an accuracy of up to 0.2%;
·Good repeatability, generally ranging from 0.05% to 0.08%, and fast measurement;
·The pressure loss is small, only about 1/2 △ P of the standard orifice plate;
·Strong anti-interference and anti impurity ability;
·The range can be changed by replacing the blocking element (target) according to actual needs;
·Low power battery on-site display, capable of online direct reading of readings, and the display screen can simultaneously read instantaneous and cumulative flow rates as well as percentage bar charts;
·Easy to install and maintain;
·Multiple output forms, capable of transmitting various parameters remotely;
·Strong shock resistance, capable of measuring pulsating flow within a certain range.

2、 Technical parameters and content

1. Main Technical Parameters Table

Typical Applications

Gases: coal gas, air, hydrogen, natural gas, nitrogen, liquefied petroleum gas, hydrogen peroxide, flue gas, methane, butane, chlorine gas, etc.
Liquid type: heavy oil, paraffin, asphalt, sulfuric acid, edible oil, residual oil, acetone, diesel, mine water, detergent, soy sauce, gasoline, silicone oil
Syrup, solvent, perfume, sea water, aviation kerosene, soap ketone water, glucose, vegetable oil acid, salt water, paste, ink, coolant
Ethylene glycol, mineral oil, liquid sugar, hydrochloric acid, automobile paint, resin, butter, vegetable oil, liquid oxygen, shampoo, toothpaste, gel
Fuel, milk, bleach, conditioner, soda, additives, cleaning agents, alkalinity, ammonia, marine oil, chemical reagents, kerosene
Glycerol, dyes, water, nitric acid, high boiling organic solutions, lard, alcohol, oil, ethylene, polypropylene, methyl benzene, etc.
Steam type: superheated steam, saturated steam.

3、 Selection Table and Model Description

1. Selection Table

a、 The specifications of the flowmeter flange shall comply with the relevant technical parameters, technical conditions, and types specified in the GB/T series standards. It can also be processed according to customer requirements;
b、 In the selection of flow meters, users should specify the various requirements of the required flow meter in the format of the model description;
c、 If users need to use calibers, nominal pressures, and output forms other than those specified in this model, please provide explanations;
d、 When selecting a high-temperature flowmeter, in addition to filling in the model description format, the maximum operating temperature of the measured medium should be specifically indicated;
e、 For flow meters with temperature and pressure compensation, in addition to filling in the model description format, the operating temperature and pressure range that need to be compensated should be specifically stated;
f、 Users need special measurement tube materials, which should be explained.
2. Selection Example
The meaning of ZN-BSL-100AQCDPIXN is: intelligent The target flowmeter is a pipeline flange type, measuring medium is gas, nominal diameter is 100mm, medium temperature is room temperature, nominal pressure is 2.5MPa (flange specification) with pressure compensation, 4-20mA current output, explosion-proof mark is intrinsic safety type, and the measuring tube material is stainless steel.

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