Insertion Type Density Meter

Insersition Density Meter
  • Insersition Density Meter

 

RBDM Insertion liquid Density Meter is based on the proven tuning fork technology. It is an all-welded sensor that is designed for insertion into a pipeline, open tank, or closed tank.

Fluid density is determined directly from the resonant frequency of the tuning fork immersed in the fluid. A temperature sensor is also fitted within the transmitter to indicate the operating temperature.

 

 

 

Description

  • Principle
  • Features
  • Specification
  • Model Selection
  • Applicants
  • Download
Principle

RBDM Insertion Density Meter operates on the vibrating element principle, the element in this case being a tuning fork structure that is immersed in the liquid being measured. The tuning fork is excited into oscillation by a piezoelectric device internally, secured at the root of one tine. The frequency of vibration is detected by a second piezoelectric device, which is secured in the root of the other tine.

The meter sensor is maintained at its natural resonant frequency, as modified by the surrounding liquid, by an amplifier circuit located in the electronic housing. This frequency of vibration is a function of the overall mass of the tine element and the density of the liquid in contact with it. As the density of the liquid changes, the overall vibrating mass changes, and therefore the resonant frequency changes.

By measuring this frequency and applying the following equation, the density of the liquid can be calculated.

 

ρ = K0 + K1τ + K2τ2

Where:

• ρ = Fluid uncorrected density (kg/m3)

• τ = Time period of meter (μs)

• K0, K1, K2 = meter calibration coefficients

Features

RBDM Insertion Density Meter Features:

  • For pipe size is more than DN150
  • Maintenance is minimal and reduces overall operating costs
  • fully integrates digital density measurement for monitoring and control
  • Capable of direct insertion into large bore pipe work applications, substantially reducing the installation cost compared to flow through devices
  • Tolerant of applications where high fluid viscosity exists
Specification

RBDM Insertion Density Meter Specifications

Density range

0.5 – 2.5 g /cc (500 – 2500 kg/m3)

Calibration range

0.8 – 1.2 g /cc (800 – 1200 kg/m3)

Accuracy

± 0.002 g /cc (± 2 kg/m3);± 0.001 g /cc (± 1 kg/m3)

Repeatability

± 0.0002 g /cc (± 0.2 kg/m3)

Temperature range (Process)

-20 ~ +150 Degree Celsius (℃)

Pressure rating

10MPa  ~  20MPa

Viscosity range

0 – 20000 cP

Temperature effect

Less than 0.1 kg/m3/℃ (After Calibration)

Impact from pressure

Negligible

Built-in temperature sensor

PT100

Wetted parts

Stainless steel 316L/ HC Hastelloy

Tine finish

Standard, PFA coated, or Electro-polished

Power supply

24VDC，≥500 mA

Analog Output

4 -20 mA，0-1000Hz，RS485 Modbus RTU

Density accuracy - process(20℃)

± 0.1% or ± 0.05% FS of indicated figures

Repeatability - process(-40 ~85℃)

± 0.05% FS

Process connection

ANSI 150 ~ 1500 RF

DIN 50 PN16  DIN 50 PN40

IDF and RJT hygienic type

Protection Grade

IP65

Outer covering

Aluminum alloy
Model Selection

RBDM Insertion liquid Density Meter Model selection

Code

production

RBDM-CR

RBDM-CR Liquid Insertion Density Meter

 

code

Material

 

A

316 Stainless Steel Standard

 

B

HC Hastelloy Standard

 

P

316 Stainless Steel( Four Fluorine Coating)

 

E

Requested preference：Please inform for particular requirement

 

 

code

Transmission output

 

 

 

 

C

4-20mA 0-1000Hz  RS485 Modbus RTU

 

 

code

Transmission device cover case

 

B

Aluminum alloy

 

 

code

Connection process

 

16

50mmGB/T 9123.1-2000 RF DN50/PN16

 

40

50mmGB/T 9123.1-2000 RF DN50/PN40

 

XX

Requested preference：Please inform for particular requirement

 

 

code

length

 

 

128

Standard length 128mm

 

XXX

User length

 

 

Code

Marked edge

 

A

Pipeline Insertion

 

B

Tank Insertion

 

C

Offer Horizontal Variable Installation Pipe

 

D

Please inform for particular requirement

 

 

code

Original setting

 

G

Options for original setting

RBDM-CR

A

 C

 B

40

128

A

G

Typical module selection

Remark: 1. Ex-proof design;

                   2. 24VDC power supply;

Applicants

RBDM Insertion liquid Density Meter Application

RBDM Insertion Density Meter is ideally suited to applications where continuous, real-time measurement of density is required. As an instance, it can be used in process control where density is the primary control parameter for the end product, or functioning as an indicator of some other quality control parameter such as percent solids, or percent concentration.


RBDM Insertion Density Meter can be applied widely in numerous industries, including brewing, end point detection in batch reactions, evaporator control, petroleum retail outlets, product mixing, slurries, tank and pipe applications, and solvent separation.

Download

Catalog - Insertion type density meter

Manual - Density meter

Other files - Density measurement

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