Intelligent online density meter MX-MD-115-01/02/03

NegotiableUpdate on 01/21

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

Product Description: Intelligent online densitometer is an automated measuring instrument used for online density measurement of various liquids or liquid mixtures

Product Details

Product description

Intelligent online densitometer is an automated measuring instrument used for online density measurement of various liquids or liquid mixtures. Widely used in the petroleum industry for detecting oil, refining, blending, and oil-water interfaces; Used for density testing of grape juice, tomato juice, fruit syrup, vegetable oil, and soft drinks in food industry production sites; Used in the paper industry for detecting the density of black pulp, green pulp, white pulp, and alkaline solutions; In the chemical industry, it is also used for detecting the density of cleaning agents, ethylene glycol, carbonic acid, urea, and polymers; It is also widely used in the pharmaceutical industry, dairy industry, mining industry, and so on.
The intelligent online density meter continuously measures liquid density online without process interruption during operation. Can be directly used for controlling the production process. Adopting an integrated two-wire transmitter structure, with no moving parts, it is easy to install, use, and maintain,
Intelligent online density meter (also known as online density transmitter) is a device used for continuous online measurement of liquid concentration and density, which can be directly used in industrial production processes. The density meter adopts technology, including a high-precision differential pressure sensor and a pair of pressure relays connected to it or inserted into the production process. There is a temperature sensor between two pressure relays to compensate for temperature changes in the process liquid. The intelligent online density meter produced by Meixu Measurement and Control is a two-wire density transmitter, mainly used for industrial process control. The online density meter generates a corresponding 4-20mA signal based on the concentration and density, which can be remotely calibrated and monitored through digital communication.

working principle

The intelligent online density meter is essentially a differential pressure transmitter. Its working principle: The pressure generated by a liquid column at a certain height is proportional to the density of the liquid.
Namely:P=ρghWhere:P——The pressure generated by a liquid column at a certain height
P——The density of the liquid
g——Measure ground gravity acceleration
H——The height of the liquid column
According to the pressure values measured by precision pressure instruments, the density value of the measured liquid can be obtained under the condition that the measured ground acceleration (fixed coefficient) and the height of the liquid column are known. Therefore, the height is a fixed value and needs to be determined in advance with the production party.

Application field

Industrial automation application field
Petroleum refining and chemical industry
Measurement of liquid density in the food industry
Medical and healthcare applications/pharmaceutical industry
Mining/Paper Industry

Product Features

☛ It has multiple installation methods, including insertion measurement, horizontal pipeline installation, and side installation
This online densitometer is suitable for flowing or stationary liquids
Two wire transmitter with integrated structure, no moving parts, easy maintenance
Online density meter calibration requires no standard reference source, no laboratory calibration, and no process interruption
Suitable for measuring high and low temperature, high viscosity media containing impurities
Excellent overvoltage protection structure, temperature stability, fully welded seal, sturdy and reliable design
Intrinsic safety type can be used in hazardous environments
Hygiene type can be used in food and drug production sites
Simplified maintenance, no need for regular cleaning

Selection method

There are three types of structural designs for intelligent online density meters, namely top mounted type, side mounted type, and pipeline mounted type. The top installation type is suitable for tank installation, and the side installation type is suitable for pipeline installation to meet the density measurement requirements under different working conditions

Installation type	Insertion depth A total length (mm)	Center distance of pressure film B (mm)	Lateral width C (mm)	Flange Specification
Single flange top installation	850	500	/	DN80 or above
Double flange side installation	700	500	150	DN50 or above
pipeline-style	1500	1000		DN25 or above

calculation rules

When the intelligent online density meter leaves the factory, the reading on its display head is the real-time density measurement value, which can be directly read.
A density meter with a current output of 4MA corresponds to the lower limit of density measurement, while 20mA corresponds to the upper limit of density measurement. Based on the actual measured current value, convert it according to the current values corresponding to the upper and lower limits of the density meter to obtain its corresponding density value. The actual measured current value should be converted according to the current values corresponding to the upper and lower limits of the density meter. For example, the lower limit of 4mA output corresponds to a density value of 0g/cm³The upper limit of 20mA output corresponds to a density value of 2g/cm³When calculating the output of 12mA, the corresponding density value is:
Then: (2-0) ÷ (20-4) × (12-4)=1 (g/cm)³)

Selection specifications

Model Description:	MX-MD-115-01 (plug-in type), MX-MD-115-02 (side mounted type), MX-MD-115-03 (pipeline type)
Range description:	0-1g/cm3； 0-2g/cm3； 0-3g/cm3 (optional)
Diaphragm distance:	500MM，1000MM，1500MM。 (Plug in and side mounted default 500MM), (Pipeline default 1000MM)
Comprehensive accuracy:	0.1% FS (code S), 0.25% FS (code A); 0.5% FS (code B); (Optional)
Resolution value:	0.005g/cm³
Reliability value:	0.05% of full range
Output signal:	4-20mA two-wire system (code 2); 4-20MA+HART (code 3)
Supply voltage:	(13-36) V DC (commonly 24V DC, load 250 Ω)
Ambient temperature	-10~60℃
ambient humidity:	（5-90）%RH
Display header:	Intelligent LCD display
Related accessories:	Fixed bracket, clamp, sealing gasket (PTFE)
Membrane material:	316L material (30A); Titanium film (30B); Ha C material (30C); Tantalum material (30D)
Installation method:	DN25 flange (50A); DN32 flange (50B); DN50 flange (50C); DN80 flange (50D)
Electrical connection:	G1/2(90N), 1/2NPT(90A), M20*1.5(90B), Waiting (can be customized according to customer requirements)

Precautions

1 . The intelligent online density meter is an automated precision measuring instrument, and its measuring diaphragm must not be subjected to any other external force except for receiving the measured pressure.
2 . When installing an intelligent online densitometer, it should be ensured that it is installed vertically (perpendicular to the ground plane, i.e. ensuring that the measuring liquid column of the densitometer is perpendicular to the horizontal plane), otherwise measurement errors may occur.
When placing an order, the measuring medium, measuring range, ground acceleration (or the name of the region of use), and on-site operating conditions (such as explosion-proof, anti-corrosion, hygiene, etc.) should be clearly stated

Ordering Guide

model	Range (range)	precision	output signal	Diaphragm material	Installation method	electrical connection
MX-MD-115-02	0-1g/cm3	0.25	4-20MA+HART	Titanium membrane	M20*1.5	M2081.5
Ordering example: MX-MD-115-02-1G-A3-30B-50C-90B

Special reminder

This product uses imported monocrystalline silicon core with zero reset function. When there is no pressure, press the M key for 5 seconds and release it when the ZIRM letter appears in the lower left corner of the display screen. Then press the Z key three times in a row, and when PV=0 appears, press the M key three times in a row. When there are no letters in the lower left corner of the display screen, the reset is complete.