Double flange remote liquid level meter

Productoverview:

ZW3051LDP series Mainly used for measuring the following occasions: precipitation medium strong corrosive or toxic medium viscous medium under high temperature and crystallization of the medium with solid particles or suspended solids can eliminate the pipe leakage phenomenon: the pollution of the environment to be isolated by liquid, because the measurement signal is not stable, often need tedious work supplementary isolation liquid. A continuous measurement of the interface and density of remote device can avoid different instant mixing medium, the actual situation which makes the measurement results reflect the process of change.

Two, work principle:

ZW3051LDP series double flange remote liquid level gauge principle is when the measured medium pressure into two kinds of high and low pressure chamber two, role in the delta element (i.e. sensitive element) on both sides of the diaphragm, the spacer and components inside the filling liquid transferred to the measuring diaphragm on both sides. The liquid level transmitter is measured by the diaphragm and the both sides of insulation on the electrode sheet of each component of a capacitor. When the pressure is inconsistent, resulting in measuring diaphragm displacement, the displacement and the pressure difference is proportional to the capacitance on both sides from it, through stages of oscillation and demodulation, signal into proportional to pressure.

When the pressure gauge is connected to one end of the liquid phase, the other end of the air phase, according to the principle of fluid statics, have:

PB=PA+H p g (2-1)

Type: H - liquid height;

P - measured medium density;

G - measured the local acceleration of gravity.

By type (2-1) available:

P= PB PA= H p g

In general, the measured density and acceleration of gravity medium are known, therefore, the differential pressure gauge differential pressure and liquid measured the height of the H is proportional to the height of the problem of measuring the liquid into the differential pressure measurement.

Third, application:

ZW3051LDP series double flange remote liquid level gauge is used to prevent the pipeline media directly into the transmitter in the sensor module, and it is filled with fluid between the transmitter by capillary connected. For the measurement of liquid, gas or steam liquid level, flow and pressure, and then turn it into 4 ~ 20mA DC signal output.

Four, main features:

1, super performance measurement, for pressure, differential pressure, liquid level, flow measurement;

2, digital accuracy: + (- 0.05%);

3, accuracy: + (-) 0.75%+ (-) 0.1%F.S;

4, full performance: + (-) 0.25F.S;

5, the stability: 0.25% to 60 months;

6, range: 100:1;

7, volume rate: 0.2S;

8, small (2.4kg) stainless steel flange, easy to install;

9, the process of connecting the compatibility with other products, to achieve the ideal measurement;

10, sensor using H alloy sheath (Technology), achieved excellent cold and thermal stability;

11, using 16 bit computer intelligent transmitter;

12, the standard of 4-20mA, a digital signal based on HART protocol, remote control;

13, support to the field bus and based on field control technology upgrades;

Five, technical parameters:

Output signal: 4 ~ 20MA.DC two-wire (Analog)

Two line 4 ~ 20mA DC superimposed on the signal digital signal, linear or square output selected by the user.(intelligence);

Power supply: 12 ~ 45V.DC;

Effect: <0.005% power output range /V;

14, to provide a reliable measurement method to avoid the isolation diaphragm contact the measured medium directly to the transmitter;

Damping: usually in 0.1 to 16 seconds between the adjustable, when filling liquid with inert or remote transmission device, the time constant will increase;

Start time: <2 seconds, without preheating;

Work environment: the environment temperature of -29 to 93 DEG C (analog amplifier);

-29 ~ 75 C (digital / intelligent amplifier);

-29 to 65 DEG C (with display gauge);

Environmental humidity is 0 ~ 95%;

Protective properties: protective ability of IP65;

Explosion-proof type: flameproof type Exd II BT4-6;

This type of Exia II CT5;

The static effect of zero error: + 0.5%zui large range limit value for 32MPa in the pipeline under pressure by zero corrected;

The effects of electromagnetic radiation: 0.05%zui large range value, the radiation frequency is 27 ~ 500MHz, the test field 3V/m;

Indicator (%): LCD digital display precision + 0.2%;

Effect of vibration: vibration direction of any 200Hz, 0.05%/g;

Installation position: the diaphragm is not installed vertically, may produce less than 0.24KPa by adjusting the zero error, but zero correction;

Weight: 3.9Kg (not including attachments).

The six level, with the remote device is applicable to the following conditions:

1, to medium and high temperature transmitter isolation.

2, medium have a corrosive effect on transmitter sensitive element.

3, the measured medium due to environmental temperature changes or solidification or crystallization.

4, the replacement of the measured medium requires strict purification of measuring head.

5, the suspended liquid or high viscosity medium.

6, the measuring head must be kept clean and tidy.

7, the sealing pressure measuring container.

Seven, attention matters and daily maintenance:

1, the use of new double flange differential pressure transmitter, to inspect the diaphragm liquid filled the adequacy (how many businesses on the production requirements of electrode liquid filled different) such as too little, need to return to factory maintenance.

2, there is no solution in diaphragm and a long stem on sensor before use to check whether there is damage in need, the purpose is to make the pressure sensor, diaphragm rupture caused by oil mixed with measuring medium.

The use of protective sleeve should be 3, daily use of flange disassembly when not in use, should not be exposed outside the diaphragm.

4, can not long dry, often use Zui well preserved in the electrode protection solution, but to soak activated before use.

5, measurement of acid alkali will reduce the electrode life greatly, so as to frequent measurement of acid alkali Zui to buy special strong acid and alkali resistant diaphragm.

6, cleaning the membrane rinse water should not be too large, do not use scrub brush iron or other metals.

7, flange tohandlegentlyand, diaphragm is very fragile, so as to avoid collision.

Eight, the selection of encoding:

Note:

In 1, the flange specifications selected working pressure on.

2, remote device operating temperature, liquid filling type is determined by the choice of irrigation.

3, remote differential pressure transmitter refers to the remote device on one side by the temperature effect caused by the variation of output.

4, static pressure and temperature, were measured at the maximal range.

5, remote differential pressure type liquid level meter side capillary length is generally 1.5 meters, not more than 3 meters (special agreement).

Nine, design selection and ordering information:

1, according to the selection of transmitter type specifications are determined according to the requirement.

2, the selection of specifications of the figures in the table, the symbol should be clear and accurate.

3, if there is a positive and negative transfer, must indicate the amount of numerical migration.

4, such as the differential pressure transmitter to be equipped with three valves, please note.

5, choose the remote transmitter, should also be based on different selection table to determine the transmission flange.

6, if the remote transmitter to be used in vacuum and high temperature occasion occasion, please note.

7, contact medium O ring material of rubber and fluorine rubber etc..

8, no special note, when the factory filled liquid silicone oil.

Customer service service commitment:

1, our level of quality products within twelve months, responsible for free maintenance.

2, the warranty period if the products of our company have any quality problems, our company is responsible for free repair or replacement.

3, the warranty period if the user use undeserved, cause damage to the product, our company is responsible for the maintenance, collect the damaged parts cost.

4, after the warranty period of product quality problems, our company is responsible for the maintenance, collect the damaged parts cost.

5, if the user needs to our service, our company in the province of the user service personnel arrived at the scene within 12 hours, arrived at the scene 48 hours outside users.