one, Overview

XYB-2088B series of liquid level transmitter uses the principle of hydrostatics, when the density of the measured medium stability, the measured liquid height is proportional to the static pressure generated by the measured medium can be used to measure the open container and the city Water supply, chemical tank, the level of the oil depot level, the transmitter structure of solid, easy to install and so on Transmitter Zero, range can be adjusted on-site , Overload and anti-interference ability, stable performance.

hard Rod level transmitter ---- pressure sensor and the junction box cable between the use of stainless steel tube package protection, it has a strong hardness, can be directly inserted into the bottom of the measured liquid, for the range of 4mH2O within the Open the container or level measurement that needs to be inserted into the installation.

Armoured Type liquid level transmitter ---- pressure sensor and the junction box cable between the use of stainless steel flexible hose package protection, so that it has a certain strength, but also has a certain flexibility, suitable for portable installation, such Level transmitter measurement range of 0 ~ 20mH2O , High temperature and corrosive media can be measured.

cable Type liquid level transmitter ---- pressure sensor and the junction box between the cable used Waterproof cables, Softness it is good , Suitable for portable installation, such liquid level transmitter measurement range of 0 ~ 200MH2O , Not Measurement of high temperature and corrosive media.

Bottom mounted level transmitter ---- transmitter mounted directly on the bottom of the container under test, removable and washable, quick installation and flange mounting flange optional, The measuring range of this kind of liquid level transmitter is in 0 ~ 100MH2O,

Explosion-proof products can be used in a variety of harsh and dangerous places.

Second, the working principle
Using the principle of static pressure measurement
When the liquid level transmitter into the measured liquid in a certain depth, the sensor surface pressure is:

Calculation Wherein

P: pressure on the sensor facing the liquid surface, unit: Pa
P: measured liquid density, unit: kg / m3
G: the local acceleration of gravity, unit: m / s2
P ·: Atmospheric pressure on the surface, in Pa
H: the depth of the sensor into the liquid, in m
At the same time, the atmospheric pressure P · on the liquid surface is introduced into the back pressure chamber of the sensor through the air-conduction cable to offset the sensor's liquid level Of the P, so that the measured pressure sensor: P = p
Obviously, by measuring the pressure P, you can get the level of depth H. Sensor pressure signal detected by the circuit amplification, compensation , Voltage and current conversion After the standard signal output.

three , Features
Stability, high precision, high performance / price ratio
Directly into the measured medium, the installation is quite easy to use
Solid structure, no moving parts, high reliability, long service life
From water, oil to the viscosity of the paste can be high-precision measurement, from the measured media foaming,

Deposition, electrical characteristics of the impact
No material fatigue wear, vibration, shock insensitive
Wide range of temperature compensation
With power reverse polarity protection and overload , Current limiting protection

four , The main technical parameters

Measuring medium: non-crystalline.

Measuring range: 0 ~ 0.5m ~ 200m optional

Output signal: 4 ~ 20mA, 0 ~ 10mA, HART protocol

Operating voltage: 12 ~ 36VDC, recommended 24VDC

Display: LED, LCD,% optional

Installation: rod, cable, Kay mounted, at the end of loading

Medium temperature: -20 ~ +70 ℃ (cable type, rod type) -20 ~ + 150 ℃ (armored type)

Operating temperature: -20 ~ +70 ℃

Temperature effects: ±0/02% Fs ° C

Explosion-proof: Explosion-proof type EXd IIBT4

Shell protection: better than IP65

Fives, Electrical wiring (the following basic wiring, please refer to the specific instructions with the goods)

4 ~ 20mA output signal (two-wire system) 0~ 10MA;1~ 5V; 0 to 5V output signal (three Wire)

six , on site Debugging method

Such as on-site signal deviation, the signal calibration, Unscrew Electronic side Protection cover, you can see the zero ZERO And full-range power Bit Device SPAN , External standard power supply 24VDC and standard Ammeter0.2 ), Can be adjusted, the following steps:

◆ In the absence of liquid transmitter, adjust the zero resistor, so that the output current 4mA,

◆ transmitter plus liquid to full scale, full-range regulation of electricity Bit So that the output current 20 mA,

◆ Repeat the above steps two or three times until the signal is normal.

◆ After adjusting, tighten the protective cover.

Seven , XYB-2088B Series Level Transmitter Selection Table

General purpose aluminum housing

2088Ex flameproof aluminum shell

2088B General aluminum shell liquid level series

No code or E1: 4-20mA ;E2: 0-10mA current transmission output

V1: 0-5V; V2: 1-5V; V3: 0-10V; V4: 0.5-4.5V voltage transmission output

S: HART + 4-20mA HART communication protocol output

Y: User-defined signal output

No code: gas cable

1: stainless steel Kay mounted

2: hard rod connection

3: gas guide cable stainless steel one

4: Bottom mounted

M1 0~100% Pointer table

M2 LCD LCD display table

M3: LED digital display table

M4: Intelligent display table

No code: 0.5; P1: 0.25; P2: 1.0 accuracy level

Measuring range: 0 ~ 200m interval selection

For example, model example: XYB-2088B1M2 0 ~ 5m. Model explained as follows

XYB-2088B Level Transmitter Transmission Output 4-20mA; stainless steel armored; on-site LCD display level value; accuracy 0.5; measurement range 0-5m.

8, use and installation

1. Level transmitter should be installed in a small temperature fluctuations, while avoiding vibration and shock.

2. Process thread connection: M33 * 2 because of different working conditions, and NPT, ZG, R, G and other threaded interface options.

Process flange connection: DN25 because of different working conditions, and HG, ANSI and other specifications flange interface optional, before ordering the user to consult with our company.

3. Transmitter for a variety of non-corrosive and slightly corrosive liquid level measurement.

4. According to the explosion-proof requirements of the transmitter, according to the product explosion-proof grade, for different explosive environments, and its associated equipment should also have explosion-proof function.

5. For strong corrosive media (such as acid, alkali) and other highly corrosive media, the choice of tetrafluoroethylene head level transmitter.

6. Signal terminals are OUT + and -. TEST + and - for the field signal test terminals, with a multimeter 20mA block positive and negative measurement pen.For the anti-interference, the signal line and other power lines do not pass through the line pipe or trunking, High-power equipment through the vicinity,

nine , Pressure transmitter safety instructions

1. Non-explosion-proof power supply must pass through the safety barrier into the safe side of the transmitter maximum open-circuit voltage is less than 35V, the maximum short-circuit current should be less than 35mA.

2. Transmitter circuit composition, the total resistance should be specified in the operating instructions in the work area, the use of the explosive environment, the total required distribution bus inductance is less than 1 mH, the total capacitance is less than O. 1 uf.

3. After wiring, the cover must be tightened by hand. The threading hole must be sealed to prevent the water in the shell.

Compared with the same type of domestic transmitter, we use the advanced data conversion chip, stable quality, reliable, the price is lower than other manufacturers, as a professional circuit design advantages, we can provide the same type of domestic manufacturers OEM services , But also for end-users to provide high-Zhong Didang quality and cheap products, manufacturers and customers are welcome to win-win cooperation.

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Tel: 0510-85886598 82328671
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