High-Performance Concentration Meter Factory

SINOU is a professional manufacturer and global supplier of industrial inline slurry concentration meter. We independently develop two mainstream pipeline monitoring solutions: straight-through ultrasonic type and widened anti-block tuning fork type, both abandon radioactive measuring sources to eliminate workshop safety risks.

This inline concentration meter is fully made of stainless steel wetted parts, built-in integrated temperature and pressure compensation algorithms, supporting real-time 4-20mA and RS485 dual signal output.

It can be seamlessly connected with membrane filter feeding control cabinet, tank mixer and automatic flocculant dosing equipment to build full closed-loop sludge dewatering system. The instrument automatically adjusts feeding flow and squeezing parameters according to real-time slurry solid content, solving frequent pipeline blockage, unstable filter cake moisture and excessive chemical consumption pain points of concrete batching plants, printing factories and municipal sewage stations.

Different from intermittent manual sampling detectors, our equipment supports 24-hour uninterrupted online monitoring to cut long-term labor and operating costs.

Two Independent Measuring Working Principles

Many overseas engineering clients raise the question: What is the difference between ultrasonic and tuning fork slurry concentration meter, and how to select the suitable type for on-site slurry pipeline? We elaborate two self-developed measuring technologies separately:

(1) Straight-through Ultrasonic Measuring Principle

The ultrasonic concentration meter adopts full straight pipe structure without internal dead angles. Symmetric ultrasonic transmitting and receiving probes are installed on both sides of the measuring pipeline. When slurry flows through the tube, solid particles and micro bubbles will attenuate ultrasonic energy.

The built-in high-precision chip calculates real-time solid content by sound velocity loss data, with independent temperature compensation program to eliminate data drift caused by medium temperature fluctuation. The built-in anti-interference algorithm automatically filters the influence of fiber and tiny air bubbles, which is highly suitable for printing dye sludge and concrete washing wastewater with many suspended impurities. Real-time concentration signals are transmitted to filter press PLC to adjust feeding pump frequency automatically.

(2) Widened Anti-block Tuning Fork Measuring Principle

The tuning fork concentration meter sets resonant sensing probe inside enlarged flange flow channel. The natural vibration frequency of the fork changes with slurry density, and the system converts frequency offset data into concentration value.

The widened cavity avoids sediment wrapping the probe, perfectly adapting to sand-containing construction mortar and mineral tailing slurry. This structure features simple operation and low power consumption, widely applied in main conveying pipelines of environmental engineering projects.

Complete Pipeline Structural Component Breakdown

All wetted and external assemblies of SINOU slurry concentration meter are optimized for long-term contact with alkaline, sandy and viscous slurry, divided into six core parts:

(1) Pipeline Measuring Main Body

Two structural styles for option: straight-through tubular / widened anti-block flange tube. Standard material is thick SUS304 seamless steel; SUS316L, Hastelloy or titanium alloy can be selected for strong corrosive medium. The inner wall supports mirror polishing to reduce sludge adhesion. Every tube undergoes 1.5 times rated hydraulic pressure test before delivery to eliminate leakage risks, matching global standard PN10/PN16 flanges without pipeline reconstruction.

(2) Precision Sensing Core

Ultrasonic dual probe group or wear-resistant tuning fork sensor, fully immersed in medium flow path, equipped with PT1000 real-time temperature detector. All electronic components pass high-low temperature aging screening before assembly.

(3) Top Digital Transmitter Cabinet

IP65 fully sealed cast aluminum shell, optional ExdⅡBT6 explosion-proof structure for chemical workshops. Local LCD touch screen displays real-time concentration, temperature and running data, supporting on-site zero and span calibration without extra computer equipment.

(4) Isolated Signal Conversion Module

Anti-electromagnetic interference circuit design, effectively resist signal jumping generated by surrounding pumps and frequency converters. Standard dual signal output: 4-20mA analog signal + RS485 Modbus digital communication, compatible with PLC, DCS and central control system.

(5) Reserved Automatic Flushing Interface

Independent high-pressure cleaning port reserved on pipe body, regularly flush attached cement and pigment sludge to extend maintenance cycle.

(6) Complete Matching Accessories

Supporting flange gaskets, fixed bolts, shielding signal cables and calibration tools are delivered as a full set, no extra spare parts purchase required.

Exclusive Core Product Advantages

(1) Dual Measuring Technology For Diverse Slurry Types

Customers can choose ultrasonic model for fiber-rich aerated sludge, or tuning fork model for gritty construction mortar. One product series covers all mainstream slurry pipeline monitoring working conditions.

(2) Non-radioactive Safe Measuring Design

No radioactive source inside the equipment, avoid occupational health hazards for workers, simplify environmental acceptance procedures for overseas projects.

(3) Full Anti-block Pipeline Optimization

Straight-through zero dead-angle tube and widened flange dual structures prevent silt accumulation; mirror polished inner wall plus flushing port greatly reduce sensor blockage frequency.

(4) Multi-dimensional Built-in Compensation Algorithm

Independent temperature, pressure and bubble filtering program, measuring data fluctuation controlled within ±0.3% full scale, no frequent manual sampling calibration needed.

(5) Closed-loop Automatic System Linkage

Real-time concentration data interlocks filter press feeding pump and dosing machine, automatically adjust flow and medicament dosage, reduce chemical consumption by 15%-28% and cut pipeline blockage rate over 70%.

(6) Global Power Supply Adaptation

50Hz/60Hz dual frequency circuit design, stable operation under unstable generator voltage of Middle East construction sites, complete CE & ISO certification to pass global bidding and customs clearance.

(7) Low Long-term Maintenance Cost

No consumable electrodes inside the sensing part, only quarterly simple calibration required, reduce annual spare parts replacement expenditure.

Two Series Official Technical Parameter Table

Ultrasonic Tubular Concentration Meter

Anti-block Tuning Fork Concentration Meter

Standard Product Selection Guide

We summarize 5 core selection standards to help overseas buyers match suitable concentration meter according to actual working conditions:

(1) Confirm slurry medium characteristics

Printing dye/cement sludge with bubbles & fiber: choose ST-U ultrasonic tubular model;

Sand-containing construction mortar / mine tailings: select ST-T tuning fork anti-block model;

Strong acid & alkaline wastewater: upgrade SUS316L/Hastelloy wetted material.

(2) Confirm required measuring precision

Ordinary mixing plant sludge dewatering: standard ±0.3wt model;

Fine chemical precise dosing projects: high-precision customized version.

(3) Match pipeline specification

Provide actual pipeline caliber and pump outlet pressure to select matching flange and pressure-resistant pipe body.

(4) Clarify automatic control demand

Basic pump speed adjustment: single 4-20mA output;

Centralized remote management: dual 4-20mA+RS485 signal with cloud module option.

(5) Distinguish installation environment

Indoor general workshop: standard IP65 transmitter;

Chemical flammable workshop: optional explosion-proof cabinet;

Outdoor open pipeline: match rainproof protective cover.

Horizontal Comparison With Traditional Slurry Density Equipment

Matching Supporting Equipment

When building full automatic sludge dewatering line, our concentration meter can form integrated environmental system with below self-developed equipment:

(1) Membrane Filter Press: Adjust feeding speed and squeezing time via concentration signal to stabilize filter cake moisture

(2) Mixer Agitator: Homogenize tank slurry to avoid local concentration stratification

(3) HDPE Slurry Pipe: Anti-corrosion pipeline matched with standard flange size

(4) Automatic Flocculant Dosing Machine: Automatically adjust medicament dosage based real-time solid content

(5) Spray Column: Monitor circulating neutral liquid concentration for waste gas treatment

Multi-industry Application Working Conditions

(1) Fixed & mobile ready-mix concrete batching plants

(2) Printing & dyeing factory sludge dewatering production pipelines

(3) Municipal sewage plant thickened sludge conveying monitoring

(4) Mining and aggregate yard tailing slurry detection

(5) Road & bridge construction mortar pipeline system

(6) Electroplating and fine chemical acid-base waste liquid treatment

(7) Middle East desert high-sand mixing station wastewater projects

Global Buyers Common FAQ

Q1: Will cement fine sand block the measuring pipeline and sensing probe?

A: Our two series both adopt targeted anti-block design. Ultrasonic tube has no protruding internal probe; tuning fork model uses enlarged flow channel to avoid silt wrapping. Equipped with dedicated flushing port for regular cleaning, long-term stable operation.

Q2: How often does the concentration meter need calibration?

A: Under standard mixing plant working conditions, only sampling comparison calibration once every three months, simple operation via local touch screen without professional software.

Q3: Can concentration signal link membrane filter automatic feeding control?

A: Yes, users can set upper and lower concentration thresholds inside the instrument to realize automatic acceleration/deceleration of feeding pump without manual operation.

Q4: Can we customize measuring range, pipe diameter and anti-corrosion material according to site conditions?

A: We provide targeted customization of measuring range, flange caliber, wetted alloy and explosion-proof configuration based on customer’s actual slurry parameters. All finished equipment retains standard SINOU brand.

Standard Installation & Commissioning Steps

(1) Install the instrument on horizontal straight pipeline, reserve at least 5 times pipe diameter straight section before and after the equipment, avoid pump outlets and elbow turbulent areas.

(2) Evenly fasten flange bolts with sealing gaskets to prevent slurry leakage during operation.

(3) Separate signal cables from high-power pump lines to avoid electromagnetic signal interference.

(4) Complete water zero calibration after installation, then conduct span calibration with standard slurry samples.

(5) Set concentration interlock parameters matching filter press PLC, run continuous test for 2-3 hours to confirm stable data before formal production.

Graded Inspection & Maintenance Schedule

(1) Daily Per-shift Inspection

① Check touch screen real-time concentration data for abnormal fluctuation

② Inspect flange joints for slurry leakage

③ Clean dust on transmitter surface

(2) Weekly Maintenance

① Start automatic flushing program to clear attached sludge inside measuring tube

② Tighten loose signal wire terminals

③ Test linkage response with feeding pump

(3) Quarterly Calibration & Deep Inspection

① Take on-site slurry sample for laboratory comparison and recalibration

② Clean pipeline inner wall scaling and silt deposits

③ Test equipment fault alarm functions

(4) Annual Complete Overhaul

④ Inspect measuring tube corrosion and wear degree

⑤ Full parameter debugging of internal control program

⑥ Replace aging sealing accessories

(5) Wearing Parts Replacement Cycle

① Flange sealing gasket: 6~9 months

② Flushing nozzle accessories: 10 months

③ Transformer internal circuit: 3 years

Working Condition Customization Service

We provide targeted adjustment according to customer’s on-site slurry parameters and project requirements:

(1) Parameter Customization: Adjust solid content measuring range, medium temperature resistance grade and pipeline pressure bearing capacity

(2) Material Customization: Upgrade SUS316L/Hastelloy/Titanium alloy wetted parts for strong corrosive medium

(3) Structural Customization: Change flange DN size, add outdoor rainproof cover or explosion-proof transmitter cabinet

(4) Function Customization: Add cloud remote data upload and upper/lower limit alarm relay output All customized products keep standard SINOU brand appearance and identification, private brand processing service is not provided.

Export Packaging & Global Logistics Terms

(1) Export Packaging Standard: Measuring tube main body coated with anti-rust grease, wrapped waterproof PE film; transmitter packed independent shockproof wooden case. All gaskets, cables and calibration tools are packed classified in accessory bags. Operation manuals and certification files are sealed in dedicated document pouch, desiccant added for sea transportation moisture protection.

(2) Applicable International Trade Terms: EXW, FOB, CFR, CIF, DAP full range of Incoterms supported

(3) Global Logistics Cooperation: Long-term cooperative freight forwarders deliver goods to Europe, Middle East, Southeast Asia and Africa. Mixed loading with filter press, agitator and HDPE pipe is allowed to save container shipping cost.

Raw Material & Finished Product QC Standards

(1) Raw Material Inspection: All stainless steel materials pass 72-hour acid-base immersion corrosion test; electronic components complete 96-hour high-low temperature aging screening.

(2) Hydraulic Pressure Test: Every tube bears 1.5 times rated pressure for 30 minutes without deformation or leakage.

(3) Precision Calibration Test: Graded standard slurry samples used for calibration, full range error controlled within ±0.4wt%.

(4) Anti-interference Simulation Test: Introduce air bubbles and fiber impurities to verify data stability under complex medium.

(5) Finished Sampling Inspection: 5% random sampling per production batch to recheck all performance indicators before delivery.

Overseas Engineering Project Cases

Case 1: Large Concrete Mixing Plant, Saudi Arabia

ST-U ultrasonic concentration meter installed on washing sludge pipeline, matched with membrane filter press feeding system. After three years of continuous operation in high-temperature desert environment, pipeline blockage rate reduced by 75%, flocculant cost saved 22%. Client Feedback: The measuring data is stable, daily maintenance workload is very low.

Case 2: Southeast Printing & Dyeing Factory

ST-U series concentration meter deployed on printing sludge dewatering line, effectively resist fiber interference and maintain stable filter cake dryness.

Case 3: Municipal Sewage Treatment Station

ST-T anti-block tuning fork model applied to thickened sludge pipeline, realize full unmanned automatic dewatering control.