6. Structural size

6.1. Size of meter housing

6.2. Boundary dimension of meter

7. MGS type selection

Special notes:

Typical model 1: MGS2500LSB2XBHX0150XEMFB-XBFCAAX Typical model 2: MGS2200LSB2XADX0130XDMTN

Special model: if special selection is required for a certain digit in the model code, fill Z' in the space of special model in the model code, and ^ { 6 6 } / Z ^ { 3 } behind the complete model code; If special accessory is required, please fill " / Z " behind the complete model code. Then, explain all the "digit for special model" and special accessories in words without omission. The text description should be placed in brackets "()" Before each description, " { Z n } " \mathbf { \tilde { n } } = 1 , 2, 3, ..) should be used for guidance and each description should be separated by semicolon";". When the specification code has multiple digits, the last digit will be changed to "Z". For example, "FB" will be changed to "FZ".

Example of special model: MGS2500LSB2XBHX0145XEMFB-XBFCAAX/Z (Z1: equipped with 304 measuring cylinder. Specification of branch flange HG/T20592-2009 DN25 PN16 RF, total length of measuring cylinder: 1 5 0 {cm } , center distance of upper and lower branch pipes: 1 0 0 {cm } -

When selecting the measuring cylinder, firstly determine the measuring range according to the working conditions, and then calculate the probe length, the total length of the measuring cylinder and the center distance between the upper and lower branches of the measuring cylinder according to the measuring range. See the following table for the calculation formula:

Tank-side cable: If tank-side indicator is optional, the standard configuration contains a communication cable of 2 5 { m } Any excess is priced in meters.

Split guided microwave radar: "Split" means that the sensor and the case (electronic unit) are separated from each other and connected by a high-frequency coaxial cable. For guided microwave radars with tank-side indicator, its sensor and case (electronic unit) are still a whole, but the display module is led out for tank side display. If a split guided microwave radar is needed, consult our technical staff to determine the specific program.

MCS Series RF Admittance Level Transmitter

1. Basic information

MCS intelligent radio frequency admittance level transmitter is a kind of level transmitter which realizes intelligence fundamentally. It is a high-end product designed based on the principle of radio frequency admittance, and inherits the advantages of high stability and wide application of capacitive level transmitter.

Compared with the traditional capacitive level transmitter, MCS adopts modular design and is equipped with LCD debugging module, which can automatically obtain and display the current value of the measured level without any peripheral auxiliary equipment, and provide users with more reliable measurement data. The LCD debugging module has dual functions of debugging and displaying, which enables users to read the required data concisely and intuitively, which is convenient for debugging.

2. Measuring principle

For the traditional capactive level transmitter, the increase of the material level and the material covering the probe, the capacitance between the probe and the medium in the circuit (in the case of conductive material) or between the probe and the pipe wall (in the case of insulating material) also increases. Since the change of material level leads to the imbalance of capacitance bridge, the change of capacitance value depends on the dielectric constant of the measured material, and then the corresponding signal is output by detecting and amplifying the signal. However, the capacitive level instrument has some shortcomings, especially when the probe is adhered with materials, which will seriously affect the measurement results.

Radio frequency admittance measurement technology is a level measurement technology with unique advantages, which can realize independent measurement of impedance and capacitive reactance. According to the calculation based on physical laws, the impedance and capacitive reactance of any adhered materials are equal, so the effect caused by adhered materials can be measured and eliminated from the total output through the phase shift of the oscillating circuit.

The radio frequency admittance technology has high accuracy and is not affected by the adhered materials of the probe, so it is the most widely used measurement technology at present.

3. Product features

\blacktriangle Resistance to adhesion of materials
\blacktriangle Strong adaptability
\bullet Span
\blacktriangle High stability
\spadesuit Maintenance free The unique design of individually measuring impedance and capacitive reactance improves the resistance to adhesion of materials.
Service temperature range of probe: . 1 0 0 ^ { \circ } { C } { ~ } 5 0 0 ^ { \circ } { C }
The minimum span can reach 1 0 { {cm } }
The maximum span can reach 2 2 0 0 {cm }
Stable and reliable output and resistance to fly ash, blanking, moisture and crystallization
No moving parts or quick-wear parts and no need for frequent cleaning, maintenance and debugging

4. Technical parameters

4.1. Power

\blacktriangle Power supply: 14V\~35V DC (standard)
\bullet Maximum allowable ripple of power supply: <100Hz Uss<1V 100Hz\~10kHz Uss<10mV
\blacktriangle Power consumption: 770mW(Max.)
\bullet Load capacity:

4.2. Input

\blacktriangle Measurement variable: continuously measure the capacitance between probe rod and tank wall or grounding pipe.
\blacktriangle Measuring range: 0pF\~47000pF
\bullet Frequency: 100kHz

4.3. Output

\blacktriangle Current output: 4mA\~20mA DC/20mA\~4mA DC
\bullet Minimum current: 3.5mA
\bullet Maximum current: 22mA
\spadesuit Delay: 0s\~99s
\bullet Startup stability time: 1.5s
\bullet Measurement response time: { < } 0 . 5 { s }
\bullet HART communication: optional

4.4. Accuracy and stability

\spadesuit Linearity: 0 . 5 %
\spadesuit Repeatability: 0 . 1 %
\bullet Temperature drift: { < 0 . 0 1 % } / { } ^ { \circ } { C } (within full span)

4.5. Housing protection

\blacktriangle Housing protection level: IP67

4.6. Safety certificate

\blacktriangle PCEC: Intrinsic safety type Ex ia IIC T6 Ga \bullet PCEC: Flameproof type Ex db IIC T6 Gb

4.7. Environment

\spadesuit Ambient temperature: - 4 0 ^ { \circ } { C } { ~ } 7 0 ^ { \circ } { C } \spadesuit Storage temperature: - 2 0 ^ { \circ } { C } { ~ } 6 5 ^ { \circ } { C } \bullet Ambient humidity: { < 9 0 % }

5. Scope of application

\blacktriangle Power plant Coal pile, raw coal bunker, fuel bunker, reservoir, waste gas purification tank, bunker pump, ash storage, fuel tank, etc.
\blacktriangle Chemical Crude oil distillation tower, raw material and intermediate silo, reaction tank, ammonia tank, toxic liquid tanks, solid tank, separator, etc.
\blacktriangle Petrochemical industry Oil pipeline, distillation tower, concentration tank, liquefied gas tank, ammonia tank, steam drum, oil depot in oil refinery, electrodeionization interface, asphalt tank, etc.
\blacktriangle Water and water Water tank, sewage pool, water treatment tank, clarifier, digestion tower, gas treatment pipeline, deep well, drinking water network, etc.
\blacktriangle Cement Stone silo, raw material silo, cement silo, pulverized coal bunker, slag storage silo, etc.
\bullet Metallurgical industry Ore bin, ore crusher, raw material bin, auxiliary material bin, blast furnace, alumina powder bin, electrolytic cell buffer tank, etc.
\spadesuit Oil field Crude oil or refined oil tank, three-phase separator, settling tank, sewage tank (pool), oil-water interface, drilling mud tank, etc.
+ Papermaking Raw material bin, storage tower, drying drum, etc.
+ Others Quarry, food, pharmaceutical, environmental protection, shipbuilding industries

6. Parameters

7. Installation requirements of probe

Powdery or particle materials are taken as examples.

Remarks:

\blacktriangleright There should be enough spacing between the meter probe and other probes, which is recommended to be greater than 6 0 0 {mm } See Fig.1), Fig.2) and Fig.3).
\blacktriangleright There should be enough distance between the meter probe and the feed inlet. It is recommended to be greater than 6 0 0 { {mm } } See Fig.1).
\succ It is necessary to ensure that there is enough distance between the silo wall and the materials adhered to the wall. It is recommended to be greater than 6 0 0 { {mm } } See Fig.2)

Remarks:

\succ The lowest end of the probe should enter the conical range of the conical discharge port.
\succ See Fig.5), if it is installed like this, the tensile force generated in this position is likely to damage the probe or the tank roof.
> The probe should not come into contact with the tank bottom or the material adhered to the tank bottom.
> As shown in 4) of the figure, the long probe in the figure must be shortened, otherwise the meter will always give an alarm.
\succ Ensure that there is enough distance between the probe and tank wall as well as the materials adhered to the tank wall.
\blacktriangleright As shown in 4) of the figure, if it is too close to the tank wall, the probe will come into contact with the tank wall or material adhered to the tank wall even if slight swinging of the probe, it is likely to cause false alarm.
\succ The probe can't be installed at the feed port or groove and other locations where the material flows directly.
\succ See Fig.4), if it is installed like this, the meter may alarm falsely.

8. Structural size

8.1. Housing size

8.2. Overall size

9. Table of MCS models

HS-AW Ultrasonic Level Transmitter

1. Measuring principle

The ultrasonic probe transmits high-power acoustic pulses to the target to be measured. When the acoustic waves meet obstacles (or obvious interfaces) in transmission, part of the energy will be reflected back. The reflected signals are recognized by the probe and processed by the electronic unit, thus realizing the measurement of the spatial distance from the probe surface to the material interface. The level height can be obtained through "operating mode-level mode" in the meter.

2. Product features

\blacktriangle Solid and stable sensor, suitable for severe industrial working conditions;
\spadesuit Built-in temperature transducer for automatic temperature compensation;
\spadesuit Two-wire, three-wire and four-wire output, with relay and NPN output;
\bullet HART, GPRS, RS485 and other optional communication methods;
\spadesuit Integrated type and remote display-type (optional);

3. Application industries

\spadesuit Utility: open pipe, pump station, water tower, dike, etc.;
\blacktriangle Power: boiler ash powder bin, raw coal bin, fly ash bin, lime bin, etc.;
\spadesuit Chemical: crude oil, light oil, chemical raw material, etc.;
\bullet Food: winery, granary, food material can, etc.;

4. Technical characteristics

Power supply
Power consumption
Range
\* Frequency
\* Precision
\* Blind zone
\* Display
\* Safety certificate
\* Ambient temperature
\* Process temperature
\* Analog Output
\* Switch output
\* Communication mode : 12V\~28V DC; 18V\~32V DC; 3.7V DC; 220V AC; : Built-in battery power supply; solar cell power supply. : <1.5W
: 1m\~40m
: 20kHz\~2000kHz
: 0.5%FS
: <0.5m
: OLED
: SIL2
: Intrinsic safety type Ex ia IIC T4 Ga
. { \displaystyle - 2 0 ^ { \circ } C { ~ } 6 0 ^ { \circ } C }
. ^ { - 4 0 ^ { \circ } C ~ 1 1 0 ^ { \circ } C }
: 4 { m A } { ~ } 2 0 { m A } ; 1V\~5V DC; 1V\~10V DC
: Relay: NPN
: HART; RS485; 4G; GPS; NB; LORA;

5. Installation guide

\blacktriangle The bottom of the probe should be extruded from the bottom of the process interface; \bullet To be installed on conical or spherical tank top, it should be installed 1/3 of the tank wall from the center feed inlet of the tank wall. \bullet If far away from the feed inlet, the probe should be installed at a position where there is no obstacle between the transmitting surface of the probe and the medium to be measured; \spadesuit Installation of the probe should ensure that the acoustic channel and the container wall are kept within the "ideal spacing" shown in the figure below. If the installation distance is smaller than the ideal spacing, the probe should be installed within the area of "min. spacing". If the installation distance is below the "min. spacing" line, the transmitter might be unable to measure the target correctly.

6. Structural size

7. Table of HS-AW model

MB Magnetic Flip Level Gauge

1. Working principle

MB magnetic flip level gauge is designed with the theory of communicating vessels. It is connected with the container through the gas phase and liquid connection flange. According to the principles of buoyancy and magnetic coupling, the magnetic float in the measuring cylinder (i.e. the connector) drives the double-color magnetic flip panel on the external display of the measuring cylinder to turn over with the rise (fall) of the measured liquid level. When the liquid level rises, the magnetic float drives the flip column to rotate by 180 degrees, displaying red or green; when the liquid level drops, the magnetic float drives the flip column to rotate by 180 degrees in reverse, displaying white. The height of the red strip (or green strip) is the height of the measured liquid level, achieving the target of measuring and displaying the measured liquid level.

Each magnetic flip panel has a two-color axial symmetrical structure. The spacing between the two magnetic flip panels is 1 0 {mm } indicating the gas phase part and the liquid phase part with white and red (green), respectively. The junction of red (or green) and white is the boundary of the liquid phase and the gas phase. This level gauge can measure both the liquid level and the interface of two media of different density;

2. Scope of application

MB magnetic flip level gauge can be widely used for measuring and displaying the liquid level and interface of two different mediums compatible with 304, 321, 316L, 304+PTFE, PVC, PP and other materials for liquid storage tank, liquid ammonia storage tank, storage reservoir, reaction tank, fermentation tank, liquid ammonia storage separator, boiler steam drum, deaerator, drain tank, return tank, high and low pressure heater, condenser, evaporator and other pressure vessels in industries such as petroleum, chemical industry, oil field, medicine, food and wine industry, etc. There are several installation forms for installation to adapt for requirements of different occasions and environments.

MB magnetic flip level gauge can be used to reliably measure the liquid level of high temperature, low temperature, high pressure, strong corrosion, highly toxic, dangerous environment.

3. Product features

Parts of MB flip column level gauge are made of 304, 321, 316L, 1Cr18Ni9Ti, 00Cr17Ni14Mo2, 0Cr18Ni9, 304 or 0Cr18Ni9 lined PTFE (polytetrafluoroethylene), PVC, PP and other material as well as imported high quality electronic elements. The product has high reliability, good stability, long durability and strong corrosion resistance. Its features are very distinctive:

\bullet It has the advantages of simple structure, firmness, reliability and durability. Almost no maintenance is required. It can be installed and used outdoors for a long time;
\spadesuit The measured medium is completely isolated from the display part, liquid level transmitter and magnetic level controller;
\blacktriangle Its operating pressure range is wide, and the pressure resistance is from vacuum to 4 2 { M P a } n
\bullet Range of operating temperature, applicable to - 1 9 0 ^ { \circ } { C } - 4 2 5 ^ { \circ } { C } 6
\spadesuit { N o } influence by the physical and chemical state of the measured medium. Such as: Influence of medium conductivity, dielectric constant, foam, pressure, temperature, evaporation, boiling, bubble, etc.; It is widely used to measure various strong and weak corrosive, flammable, explosive, toxic, highly radioactive, agitated, muddy liquid surfaces and interfaces.
\blacktriangle Single-pole single-throw (SPST) and single-pole double-throw (SPDT) passive bistable magnetic level controllers can be selected to realize high and low liquid level, interface control or alarm. The number of magnetic level controllers is not limited.
\blacktriangle Reed pipe level transmitter or capacitance level sensor, magnetostrictive level transmitter and two-wire 4 { m A } { - } 2 0 { m A } (or with HART protocol) output signal can be selected to realize remote centralized measurement and control.
\blacktriangle The two-wire liquid level transmitter can be provided with LED digital display to be convenient for observation at night.

4. Schematic diagram for installation

5. Additional functions

To meet the needs of different occasions, environments and functions, the MB magnetic flip level gauge can be supplied with the following options:

\bullet Single-pole single-throw (SPST) and single-pole double-throw (SPDT) passive bistable magnetic level controllers can be selected to realize high and low liquid level, interface control or alarm. The number of magnetic level controllers are not limited.
\bullet Two-wire magnetic level transmitter and 4 { m A } { ~ } 2 0 { m A } output signal might be provided to achieve remote measurement and control.
\bullet Two-wire magnetostrictive or capacitance transmitter and 4 { m A } { ~ } 2 0 { m A } output can be selected to realize high precision and continuous measurement and control.
\spadesuit Output 4 { m A } { ~ } 2 0 { m A } , HART protocol might be supplied

6. Technical characteristics

7. Installation process interface

8. Top structure of main pipe

Weld cap Weld cap and { \bf M } 1 4 x 1 . 5 screw plug

Flange

Flange and { \bf M } 1 4 x 1 . 5 screw plug

Weld cap and DN20 flange

Flange with DN20 flange

Weld cap and exhaust valve

Flange with exhaust valve

9. Bottom structure of main pipe

10. Technical parameters of displayer

11. Table of MBS Model

12. Table of MBT Model

13. Table of MBG Model

14. MB-CB level transmitter

The level transmitter is divided into magnetic level transmitter, magnetostrictive level transmtter and capacitance level transmitter. The level transmitter and the magnetic flip level gauge are used together to measure and control the liquid level signal remotely and centrally.

MB-CBY series refer to magnetic level transmitter composed of imported reed pipe, precision resistor and amplified converting circuit. When the magnetic line of the magnetic float in the magnetic flip level gauge acts on the reed pipe at a position, the reed pipe closes to enable the three-wire potentiometer to output the resistance value corresponding to the liquid level. The resistance value of three-wire potentiometer is proportional to the liquid level change. The amplified converting circuit converts the level change into 4 { m A } { ~ } 2 0 { m A } signal and outputs it to detect and transmit the liquid level signal.

MB-CBC series refer to capacitance level transmitter, composed of measuring pole and capacitance converting circuit. The measuring pole is installed in the bypass pipe of the magnetic flip level gauge. The pole detects the liquid level change and outputs a 4 { \dot { m } A } { ~ } 2 0 { m A } signal proportional to the liquid level change across the capacitance converting circuit. The output signal is not affected by the float position of the magnetic flip level gauge. As long as there is liquid level, the 4 { m A } { ~ } 2 0 { \dot { m } A } signal corrsponding to the liquid level can be outputted, further improving the reliabilit. In the meantime, it isfeatured by resistance to corrosion, high working temperature and continuous output signal.

MB-CBS series refer to magnetostrictive level transmitter. Developed based on the magnetostrictive principle, the magnetostrictive level transmitter is a new generation of level transmitter with high measurement accuracy. With stable performance, the product will not be affected by the change of gas, temperature and pressure in the tank. It can provide two-wire 4 { m A } { ~ } 2 0 { { \dot { m } } A } (with HART), ModBus and other signal outputs.

14.1. Technical parameters

14.2. Wiring diagram of transmitter 14.3. Accuracy of transmitter

Two-wire 4-20mADC

Resolution (mm) Accuracy \mathbf { \Sigma } = x100% Measuring span (mm)

Note: For the same resolution, the wider the measurement range is, the higher the measurement accuracy is.
For example, when resolution is 1 0 \quad {mm } and measurement range is 1 0 0 0 ~ { ~mm } the measurement accuracyis 1 % ;when resolution is 1 0 ~ { \mm } and measurement range is 2 0 0 0 ~ { \mm } the measurement accuracy is 0 . 5 % .

14.4. Outline structure of transmitter

14.5. Installation mode of transmitter

MB-CBY magnetic level

MB-CBS magnetostrictive level

MB-CBC capacitance level transmitter

15. Table of MB-CBY models

Typical model: MBSAAAAE1500ADAD-BCDCAAXX-CBYSBOX1500D

16. Table of MB-CBS models

17. Table of MB-CBC models

18. MB-HB magnetic level controller

The magnetic level controller and magnetic flip panel are used together and widely applied to alarm or automatic control of various liquid level (interface).

18.1. Measuring principle

The magnetic level controller adopts the imported high-quality reed pipe. There are two kinds of switch contact, i.e. single-pole double-throw (SPDT) and single-pole single-throw (SPST). When the magnetic float passes by the midpoint of the magnetic switch, the magnetic switch contact switches to and remains a stable state. When the magnetic float reversely passes by the midpoint of the magnetic switch, the magnetic switch contact switches to the original stable state and remains.

The two stable states of the magnetic level controller are only switched by the magnetic float. No external operating power supply is required.

18.2. Technical parameters

\blacktriangle Type of magnetic level controller: reed pipe
\spadesuit Switch contact state: bistable state (passive)
\bullet Switch contact type: 1 SPDT (single-pole double-throw) or 1 SPST (single-pole single-throw)
\spadesuit Maximum switching voltage: 230V AC, 250V AC (resistive load)
\bullet Maximum switching power supply: 0.5A, 1.0A, 2.0A (resistive load)
\spadesuit Maximum switching power: 20w, 60w, 200w (resistive load)
\spadesuit Maximum switching frequency: <= 1 x 1 0 ^ { 9 } times
\spadesuit Switching error: <= ± 8 ^ { ± 2 } mm
\bullet Working temperature: { <= } 8 0 ^ { \circ } { C } .. \le 1 5 0 ^ { \circ } { C } 0 { \le } 3 5 0 ^ { \circ } { C }
\bullet Ambient temperature: Normal temperature working conditions 4 0 ^ { \circ } { C } { ~ } 8 0 ^ { \circ } { C } , low-temperature working conditions - 6 0 ^ { \circ } { C } { ~ } 8 0 ^ { \circ } { C } (see the Explosion Protection Certificate for ambient temperature of explosion-proof products)
\spadesuit Installation method: installed by guide rail or hoop; the switching position can be adjusted
\blacktriangle Electrical interface: non flameproof type: provided with 0 . 3 { m } outgoing line
\blacktriangle Flameproof type: \mathbf { M } 2 0 { x } 1 . 5 female thread or 1/2"NPT female thread
\bullet Ingress protection: IP65
\bullet Explosion-proof level: CNEXFlameproof type Ex db IIC T6 Gb; EAC Flameproof type 1Ex db IIC T6 Gb X

18.3. State definition

The states of switch contact in the magnetic level controller include "normally open", "normally closed" and 'switching type", defined as

\blacktriangle Normally open type: The float closes when passing by the switch contact from above or under the normal liquid level.
\blacktriangle Normally closed type: The float is disconnected when passing by the switch contact from above or under the normal liquid level.
\blacktriangle Switching type: The state switches when the float passes by the switch contact from above or under the normal liquid level.

18.4. Wiring diagram of magnetic level controller

18.4.1. Non flameproof type

18.4.2. Explosion-proof type

Switching type Normally open type

Normally closed type

18.5. Housing structure of liquid control

Provided with 0 . 3 { m } outgoing line

Provided with 0 . 3 { m } outgoing line

Non explosion-proof die casting Al housing For switch codes:

Non explosion-proof 304 housing For switch codes:

Explosion-proof type die casting Al housing For switch codes:

A, B, C, D, E, F A, E, F

3 5 0 ^ { \circ } { C } high-temperature explosion-proof type Die casting Al or 304 housing For switch code: G

Explosion-proof type stainless steel housing+die casting Al junction box For switch codes:

A, B, C, D, E, F

19. Table of MB-HB Model

MBQ Magnetic Float Gauge

1. Measuring principle

MBQ magnetic float gauge is composed of reed pipe, precision resistor and amplified converting circuit. When the magnetic line of the magnetic float acts on one position of the liquid level sensor, the reed pipe at such position closes and the magnetic float varies with the liquid level (interface). The amplified converting circuit converts the liquid level (interface) change into linear 4 { m A } { ~ } 2 0 { m A } signal and outputs it to detect and transmit the liquid level (interface) signal.

With imported high-quality sensor components and signal converters, MBQ magnetic float gauge has excellent long-term stability and reliability.

2. Application industries

MBQ magnetic float gauge is widely used to measure, transmit and display the liquid level of the medium or the interface of two media of different density (liquid, oils and strong and weak acid-base solution) in various kinds of vessels, such as liquid storage tank, storage tank, storage reservoir, reaction tank and fermentation tank used in the industries related to oil, chemicals, pharmaceuticals and food.

3. Product features

\blacktriangle Simple structure, good stability and reliability, excellent repeatability;
\spadesuit { N o } influence by the physical and chemical state of the measured medium. Such as: Influence of conductivity, dielectric constant, foam, pressure, temperature, evaporation, bubble, etc.;
\blacktriangle Made of different materials and used in all kinds of strong and weak, flammable and explosive, toxic, radioactive and muddy media;
\blacktriangle Measuring the liquid level or the interface of two media of different density;
\blacktriangle Explosion-proof structure design for explosive environment;
\blacktriangle Two-wire 4 { m A } { ~ } 2 0 { m A } current output, with 0 . 5 6 " LED digital display, convenient for the long-distance observation at night.

4. Schematic diagram for installation

5. Technical characteristics

\blacktriangle Measurement range: 2 0 0 {mm } { ~ } 6 , 0 0 0 {mm } (special order if greater than 6m)
\blacktriangle Resolution: 1 0 {mm } (common), 5 {mm } 6 2 0 {mm }
\spadesuit Output signal: 4 { m A } { ~ } 2 0 { m A } (two-wire)
\blacktriangle Linear resistance, 2 0 0 \Omega / { m } - 1 / 2 " 6 3 / 8 " thread installation method)
\bullet Load resistance: 5 0 0 \Omega (24V DC power supply and without digital display case)
\blacktriangle Transmission distance: { \tt > } 1 , 0 0 0 { \tt m }
\blacktriangle Ambient temperature: Normal temperature working conditions- 4 0 ^ { \circ } { C } { ~ } 8 0 ^ { \circ } { C } , low-temperature working conditions - 6 0 ^ { \circ } { C } { ~ } 8 0 ^ { \circ } { C } (see the Explosion Protection Certificate for ambient temperature of explosion-proof products)
\blacktriangle Process temperature: - 4 0 ^ { \circ } { C } { ~ } 8 0 ^ { \circ } { C } - 2 0 ^ { \circ } { C } { ~ } 1 2 0 ^ { \circ } { C }
\blacktriangle Operating power supply: 16V\~30V DC
\blacktriangle Medium density: { \ge } 0 . 5 { g } / {cm } ^ { 3 } (special order is available if < 0 . 5 { g } / {cm } ^ { 3 } , -
\spadesuit Nominal pressure: PN2.5\~PN160 { (kg f /cm ^ { 2 } } )(up to { P N } 3 2 0 {kg f } / {cm } ^ { 2 } in special cases)
\blacktriangle Float diameter: 045\~0120 (determined by pressure and density)
\spadesuit Installation flange: DN50\~DN150 (HG/T 20592-2009)
\bullet Electrical interface: \mathbf { M } 2 0 { x } 1 . 5 female thread or 1/2"NPT female thread
\blacktriangle Nonperpendicularity of installation: <= ± 2 5 ^ { \circ }
\blacktriangle Ingress protection: IP65
\blacktriangle Explosion proof level: intrinsic safety type Ex ia IIC T6 Ga, flameproof type Ex db IIC T6 Gb

6. Type of junction box

LCD display with HART

7. Diagram of wiring

8. Wiring diagram in junction box

Two-wire 4-20mADC

9. Float parameters

9.1. Cylindrical float

Critical medium density when 8 5 % (volume) float is soaked in the medium (minimum medium density)

Standard medium density when 5 0 % (volume) float is soaked in the medium

9.2. Spherical float

9.3. Table of parameters

Critical medium density when 8 5 % (volume) float is soaked in the medium (minimum medium density)

Standard medium density when 5 0 % (volume) float is soaked in the medium

10. Technical parameters

11. Table of MBQ model

MFT Displacer Level Gauge

1. Measuring principle

MFT intelligent displacer (interface) level gauge is an (interface) level gauge developed based on foreign techniques. It consists of intelligent processing unit, measuring chamber, inner displacer, and torque tube assembly. The change of the liquid level of the measured medium causes the buoyancy of the inner displacer to change, which changes the resultant force of the torque tube and transmits it to the torque tube assembly, so that the torque tube and the spindle deflect synchronously. By measuring the displacement of the deflection, the intelligent processing unit converts the displacement into a signal of 4 { m A } { ~ } 2 0 { m A } for output. The intelligent processing unit can detect the change of ambient temperature and compensate the output signal linearly, and can also compensate the change of liquid density caused by the change of process temperature.

MFT intelligent (interface) level gauges provide standard 4 { m A } { ~ } 2 0 { m A } current signal output, on-site LCD, and can provide communication functions such as HART.

2. Product features

\blacktriangle Torque tube type, high sensitivity, little drift and high accuracy;
\bullet High stability and high disturbance resistance;
\spadesuit Output 4 { ~ } 2 0 { m A } , HART protocol can be superimposed;
\bullet LCD;
\bullet Convenient debugging. It can be debugged through the buttons on the case at site;

3. Application industries

\blacktriangle Power plant Water tank, waste gas purification tank, oil tank, etc.
\blacktriangle Oil field Crude oil or refined oil tank, three-phase separator, setling tank, sewage tank (pool), etc.
\blacktriangle Petrochemical industry Oil pipeline, liquefied gas tank, ammonia tank, oil refinery depot, gas station storage tank, etc.
\blacktriangle Chemical Distillation tower, ammonia tank, toxic liquid tank, etc.
\blacktriangle Water and water treatment Water tank, sewage pool, water treatment tank, clarifier, digestion tower, etc.
\blacktriangle Others Food, pharmaceutical, environmental protection, paper making and other industries

4. Technical characteristics