TQ-885 Inline Pipeline Density Meter

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TQ-885 Inline Pipeline Density Meter

Product ID：ZXQT004

Price: Please inquire PDF Format

Supply Ability:50SETS/MON

Port:SHENZHEN

Product Introduction
Other information

Model NumberTQ-885

Brand NameSHITONGKECHUANG

Payment TermsTT，PAYPAL，Alibaba.com Pay

TQ-885 Inline Pipeline Density Meter

Product Introduction
The TQ-885 Inline Pipeline Density Meter is a high-precision online density and concentration measurement instrument developed by Beijing Shitong Kechuang Technology Co., Ltd. Based on the hydrostatic pressure principle, the TQ-885 continuously measures liquid density for industrial process automation and real-time process monitoring.
Changes in medium density are converted into a 4–20 mA analog output, while digital communication can be used for remote calibration and monitoring. Depending on the process application, the measured density or concentration can be expressed as g/cm³, kg/m³, specific gravity, °Brix, °Baume, °Plato, °GL or solid percentage.
The TQ-885 can be installed directly on industrial pipelines as well as open or closed storage tanks, providing continuous and real-time liquid density measurement for both flowing and static liquids.

Performance Features
• High-precision online density measurement: Uses hydrostatic pressure technology for continuous liquid density monitoring.
• Direct density/concentration display: Supports g/cm³, kg/m³, specific gravity, °Brix, °Baume, °Plato, °GL and solid percentage.
• Flowing or static liquid measurement: Suitable for pipeline and tank applications.
• 4–20 mA/HART output: Two-wire industrial signal transmission simplifies process-system integration.
• Integrated construction: No moving parts for a robust measurement structure.
•   Industrial and sanitary connections: Supports standard process connection configurations.
•   Optional GPRS transmission: The converter can be equipped with GPRS wireless remote communication.
•   Automatic temperature compensation: Built-in Pt1000 temperature sensor compensates for temperature effects.
• Online remote verification: Supports digital local display and remote calibration.
• Factory multi-point linear correction: Multi-point correction helps improve measurement accuracy.
• Field recalibration: Recalibration can be performed without a standard reference source, laboratory calibration or process interruption.
• Flexible converter installation: Supports wall-mounted, embedded and desktop configurations.
• Touchscreen operation: Converter features a user-friendly touchscreen display.

Working Principle
The TQ-885 operates according to the hydrostatic pressure principle. When liquid density changes, the resulting hydrostatic pressure also changes. The sensor detects this pressure variation and converts it into a corresponding density measurement.
The converter processes the measurement signal and provides a 4–20 mA/HART output for industrial automation systems. Density or concentration can be displayed locally in the selected engineering unit.
A built-in Pt1000 temperature sensor continuously monitors temperature and provides automatic temperature compensation, helping minimize the influence of process-temperature variations on density measurement.
The system also supports factory multi-point linear correction and field recalibration, allowing the density measurement to be adjusted without interrupting the process.

Technical Parameters

Parameter	Specification
Model	TQ-885
Measurement Principle	Hydrostatic pressure
Measurement Range 1	0–1.5 g/cm³
Measurement Range 2	0–2 g/cm³
Measurement Range 3	0–3 g/cm³
Accuracy Class A	±0.001 g/cm³
Accuracy Class B	±0.005 g/cm³
Accuracy Class C	±0.01 g/cm³
12-Month Stability	0.021 × 10⁻³ g/cm³
Ambient Temperature Effect	0.003 × 10⁻³ g/cm³ per 10°C
Static Pressure Effect	0.001 × 10⁻³ g/cm³ per 1 kgf/cm; system error can be eliminated by calibration under static pressure
Power Supply Effect	±0.005% calibrated span/V
Electromagnetic Interference	Designed according to IEC 801 and European standards EN 50081/EN 50082
Temperature Sensor	Pt1000
Temperature Sensor Range	-40–3000°C*
Output Signal	Two-wire 4–20 mA/HART
Sensor Power Supply	24 V DC
Converter Power Supply	24 V DC or 220 V AC
Local Display	LCD
Ambient Temperature	-40–85°C
Process Temperature	-40–100°C
Normal Operating Temperature	-40–85°C
Start-Up Time	0.2 s
Humidity Range	0–100% RH
Temperature Compensation	Automatic Pt1000
Sanitary Process Connection	316L SST clamp connection
Industrial Process Connection	316L SST flange connection
Wetted Parts	316L, Hastelloy, optional tantalum diaphragm
Non-Wetted Filling Fluid	Silicone oil (DC200/350, DC200/20, DC704), Syltherm 800, or glycerin/water
Installation	Pipeline or tank mounting
Converter Installation	Wall-mounted, embedded or desktop
Wireless Communication	Optional GPRS

* Source-data note: The supplied specification lists the Pt1000 temperature range as “-40–3000°C.” This value appears inconsistent with the other operating-temperature specifications and should be confirmed with the manufacturer before publication.

Measurement Units
The TQ-885 can directly display density or concentration in multiple engineering units:

Measurement	Unit
Density	g/cm³
Density	kg/m³
Relative Density	Specific Gravity
Sugar Concentration	°Brix
Baume Scale	°Baume
Plato Scale	°Plato
Alcohol Concentration	°GL
Solid Content	%

Application Scenarios
The TQ-885 Inline Pipeline Density Meter is designed for continuous density and concentration monitoring in:
•   Industrial process automation and control
•   Pipeline liquid density measurement
•   Open and closed storage tanks
•   Flowing liquid monitoring
•   Static tank liquid measurement
•   Chemical process industries
•   Food and beverage processing
•   Sugar and syrup concentration measurement
•   Alcohol concentration monitoring
•   Solid-content measurement
•   General industrial liquid concentration control

TQ-885 vs. Conventional Laboratory Density Measurement

Feature	TQ-885 Inline Density Meter	Conventional Laboratory Measurement
Measurement Mode	Continuous online	Periodic sampling
Installation	Pipeline or tank	Laboratory
Measurement	Real-time	Offline
Measurement Principle	Hydrostatic pressure	Depends on test method
Temperature Compensation	Automatic Pt1000	Usually separate
Process Output	4–20 mA/HART	Usually manual/data transfer
Remote Monitoring	Supported	Limited
Field Recalibration	Supported	Laboratory procedure generally required
Process Interruption	Not required for field recalibration	Sampling normally required
Moving Parts	None	Method dependent
Local Display	LCD/touchscreen converter	Method dependent
Wireless Transmission	Optional GPRS	Usually unavailable

FAQ
1. What is the TQ-885 Inline Pipeline Density Meter?
The TQ-885 is an online density and concentration sensor designed for continuous measurement of liquids in industrial pipelines and storage tanks.
2. What measurement principle does the TQ-885 use?
It uses the hydrostatic pressure principle to measure liquid density.
3. Can the TQ-885 measure concentration as well as density?
Yes. It can display density or concentration using units including °Brix, °Baume, °Plato, °GL and solid percentage.
4. Can the TQ-885 measure both flowing and static liquids?
Yes. It is suitable for flowing liquids in pipelines as well as static liquids in storage tanks.
5. What output does the TQ-885 provide?
The sensor uses a two-wire 4–20 mA/HART output. The converter can also be configured with optional GPRS wireless transmission.
6. Does the TQ-885 provide automatic temperature compensation?
Yes. The instrument has a built-in Pt1000 temperature sensor for automatic temperature compensation.
7. What process connections are available?
The TQ-885 supports 316L stainless-steel sanitary clamp connections and 316L stainless-steel industrial flange connections.
8. Can the TQ-885 be recalibrated directly in the field?
Yes. Field recalibration is supported without requiring a standard reference source, laboratory calibration or process interruption.
9. Where can the TQ-885 be installed?
It can be installed directly on industrial pipelines, open storage tanks or closed storage tanks for continuous liquid density measurement.

FAQ
1. What is the TQ-885 Inline Pipeline Density Meter?
The TQ-885 is an online density and concentration sensor designed for continuous measurement of liquids in industrial pipelines and storage tanks.
2. What measurement principle does the TQ-885 use?
It uses the hydrostatic pressure principle to measure liquid density.
3. Can the TQ-885 measure concentration as well as density?
Yes. It can display density or concentration using units including °Brix, °Baume, °Plato, °GL and solid percentage.
4. Can the TQ-885 measure both flowing and static liquids?
Yes. It is suitable for flowing liquids in pipelines as well as static liquids in storage tanks.
5. What output does the TQ-885 provide?
The sensor uses a two-wire 4–20 mA/HART output. The converter can also be configured with optional GPRS wireless transmission.
6. Does the TQ-885 provide automatic temperature compensation?
Yes. The instrument has a built-in Pt1000 temperature sensor for automatic temperature compensation.
7. What process connections are available?
The TQ-885 supports 316L stainless-steel sanitary clamp connections and 316L stainless-steel industrial flange connections.
8. Can the TQ-885 be recalibrated directly in the field?
Yes. Field recalibration is supported without requiring a standard reference source, laboratory calibration or process interruption.
9. Where can the TQ-885 be installed?
It can be installed directly on industrial pipelines, open storage tanks or closed storage tanks for continuous liquid density measurement.