Dandong Top Electronics Instrument (Group) Co., Ltd.

No.10 Huanghai Street Dandong Liaoning Province, China
Dandong,  Liaoning  118000

China
0086-415-6226466
http://www.ddtop.com/en/
  • Booth: 7315

DDTOP was founded in 1992 and is a manufacturer of level and flow measurement & control process instruments. DDTOP is specialized in oil&gas, petroleum&chemical, power generation sector and is a qualified supplier of SINOPEC, PetroChina, CNOOC, ADNOC, NIGC etc. Our products have explosion proof certs (ATEX, IECEx,NEPSI, PCEC) , SIL2 &PED.


 Products

  • Displacer Level Transmitter
    Displacer level transmitter is the main product of DDTOP. Our self-developed model DLT9000 has get the certificates include ATEX, IECEX, SIL2, PED. We are also the authorized OEM manufacturer of Fisher DLC3010 and Foxboro 244LD....

  • ZTD Type Displacer Level Transmitter

    ZTD Displacer Level Transmitter with DLT9010 Level Controller

    ZTD displacer level transmitter with DLT9010 level controller is researched, developed and continuously improved by DDTOP through many years. It is the product with international advanced level measuring technology. The reliability of this product is ensured by DDTOP’s experienced field technology research and precisely controlled design and production process. The product has also gained certificates issued by world class authorities, been awarded nationwide honors and awards, and been appreciated and appraised by our clients.

    Certifications

    Functional safety, SIL 2 certification certified by Bureau Veritas

    European Union CE ATEX directive explosion-proof certification certified by TÜV Rheinland

    IECEx explosion-proof certification certified by TÜV Rheinland

    European Union CE PED directive certification certified by TÜV SÜD

    Patents

    Float liquid level gauge adjustment device zero point - utility model patent (Patent No.: ZL 2014 2 0097716.3).

    Float liquid level transmitter with overload protection agencies - utility model patent (Patent No.: ZL 2014 2 0801088.2).

    Float liquid level gauge calibration, self-check institutions - online utility model patent (Patent No.: ZL 2009 2 0203039.8).

    Float liquid level transmitter, appearance design patent (Patent No.: ZL 2010 3 0660336.3).

    Software copyrights

    "DDTOP - Embedded software for displacer level transmitter with functional safety V1.0" (Soft Registration No. 0694038).

    "DDTOP – Embedded software for smart level transmitter V1.0" (Soft Registration No. 0225313).

    Main Technical Parameters of ZTD Displacer Level Transmitter with DLT9000

    Power supply: 12~30V DC;with reverse-polarity protection.(When HART communication is, the voltage of controller should be larger or equal to 17.75V DC).

    Output: 4~20 mA DC(direct increasing input increases output or reverse action)

    Measuring range: 300mm - 2500mm (to order; customized design if out of range)

    Nominal pressure: ≤42.0MPa (≤6000 psi)

    Nominal diameter: DN40 or to order

    Ambient temperature:-40 ºC to +80 ºC (when ≤–30ºC, LCD stops working)

    Process temperature:-198℃≤T≤+400℃

    Accuracy: +/-0.5%FS; +/-1.0%FS

    Influence by power supply:When the voltage of the power supply varies between min. and max. ,the output change is within <±0.2%. of the output range.

    LCD display:Output current signal, process variable, process temperature, percentage range, rotation angle of torque tube.

    Medium liquid density:0.2≤ρ≤1.9g/cm3

    Medium density difference:≥0.08g/cm³

    Torque tube material:Standard configuration Inconel 600, or Monel, HasetlloyC-276

    Wetted material: 304, 316L or as customers' request

    Chamber material:CS, 304, 316 or as customer required.

    Displacer material:304,316 or as customer required.

    Flange standard: HG/T20592-2009, HG/T20615-2009 or as customers' request

    Power entry: Two M20×1.5 (female) or as customers' request

    Hazardous Area Explosion-proof:

    IECEx     Ex ia ⅡC T5 Ga;Ex d ⅡC T5/T6 Gb;

    TUV      Ex ia ⅡC T5 Ga;Ex d ⅡC T5/T6 Gb;

    PCEC     Ex ia ⅡC T5 Ga;Ex d ⅡC T5/T6 Gb;

    Functional safety: SIL 2

    Electrical housing: IP66

    Alarm configuration: For the self-diagnosis to the inaccuracy failure of the process variables (for example, the electronic module failure). Configure the process variables for high and low alarms.

    ZTD Displacer Level Transmitter with DLC3000 Level Controller

    Our company is the authorized OEM manufacturer by Emerson fisher for DLC3000 series and we are the world largest displacer level transmitter OEM manufacturer. DLC3000 series level controller is produced by Emerson Fisher. Through many years of manufacturing and maintenance in use process, DDTOP accumulated rich experience in ensuring ZTD Displacer Level Transmitter reliably and safely use with DLC3000 series Level Controllers.

    ZTD Displacer Level Transmitter with 244LD Level Controller

    DDTOP is the largest authorized OEM manufacturer of Schneider Foxboro 244LD displacer level transmitter. The level controller part is originally manufactured by Foxboro. DDTOP has 20+ years of experiences of manufacturing and troubleshooting 144LD, 244LD, 244LD LevelStar series of level controllers. This accumulated experience in the field application ensure a reliable and safe application in process industry.

  • UHC/UQC Type Magnetic Level Gauge
    UHC/UQC type magnetic level gauge can be widely used in refining, petrochemical, power industries etc. UHC type is used for side mounted; UQC type is used for top mounted, especially for underground tanks and underground storage tank level measurement....

  • UHC/UQC MAGNETIC LEVEL GAUGE

    Main Technical Parameters

    1.  Local Indicators

    1.1 UHC Normal Type Level Gauge

    Application Scope:This type UHC level gauge is most commonly used for side mounted liquild level and interface measurement.

    Measuring Range:300mm~6000mm(Can be produced beyond the scope)

    Nominal Pressure:PN≤6.3MPa

    Nominal Diameter: DN25(or as customer requirement)

    Ambient Temperature:-40℃~+80℃

    Medium Temperature:-10℃≤T≤300℃

    Accuracy:±5mm

    Density:Liquild:ρ≥0.45g/cm3   Interface:ρ1-ρ2≥0.16g/cm3

    Wetted Material:304、316L or as customer required

    Flange Standard:HG/T20592-2009, HG/T20615-2009 or as customer required

    1.2 UHC.GY High Pressure Type UHC Level Gauge

    Application Scope:Suitable for high pressure

    Measure Range:300mm~6000mm(Can be produced beyond the scope)

    Nominal Pressure:6.3MPa<PN≤26MPa

    Nominal Diameter:DN25(or as customer requirement)

    Ambient Temperature:-40℃~+80℃

    Medium Temperature:-10℃≤T≤300℃

    Accuracy:±5mm

    Density:Liquid:ρ≥0.5g/cm3   Interface:ρ1-ρ2≥0.16g/cm3

    Wetted Material:304、316LWetted Material:304、316L or as customer requirement

    Flange Standard:HG/T20592-2009,HG/T20615-2009 or as customer requirement

    1.3 UHC.GW High Temperature Type UHC Level Gauge

    Application Scope:Suitable for high temperature

    Measure Range:300mm~6000mm(Can be produced beyond the scope)

    Nominal Pressure:PN≤16.0MPa

    Nominal Diameter:DN25(or as customer requirement)

    Ambient Temperature:-40℃~+80℃

    Medium Temperature:+300℃<T≤+450℃

    Accuracy:±5mm

    Density:Liquild:ρ≥0.5g/cm3    Interface:ρ1-ρ2≥0.16g/cm3

    Wetted Material:304, 316LWetted Material:304, 316LWetted Material:304, 316L or as customer requirement

    Flange Standard:HG/T20592-2009,HG/T20615-2009or as customer requirement

    Structural features: Use high temperature Alnico magnet + ceramic magnetic flap indicator

    1.4 UHC.F Anti-corrosion Type Magnetic Level Gauge

    Application Scope:304 chamber liner PTFE, for strong corrosive liquid or interface level

    measurement in petroleum, chemical or other industries.

    Measuring Range:300mm~6000mm(Can be produced beyond the scope)

    Nominal Pressure:PN≤2.5MPa

    Nominal Diameter:DN25(or as customer requirement)

    Ambient Temperature:-40℃~+80℃

    Medium Temperature:-30℃≤T≤200℃

    Accuracy:±5mm

    Density:Liquild:ρ≥0.5g/cm3    Interface:ρ1-ρ2≥0.16g/cm3

    Wetted Material:Chamber 304, liner PTFE,float with PTFE outer lining

    Flange Standard:HG/T20592-2009, HG/T20615-2009 or as customer requirement

    1.5 UHC.O Vacuum Jacket Magnetic Level Gauge

    Application Scope: Suitable for low temperature, easy frosting occasions or interface level measurement.

    Measuring Range:300mm~6000mm

    Nominal Pressure:PN≤16.0MPa

    Nominal Diameter:DN25(or as customer requirement)

    Ambient Temperature:-40℃~+80℃

    Medium Temperature:-196℃~0℃

    Accuracy:±5mm

    Density:Liquid:ρ≥0.5g/cm3    Interface:ρ1-ρ2≥0.16g/cm3

    Wetted Material:304、316L or as customer requirement

    Flange Standard:HG/T20592-2009, HG/T20615-2009or as customer requirement

    Structural Features:The chamber part uses vacuum jacket insulation technology, to make the level gauge surface no frosting.

    1.6 UQC Type Level Gauge

    Application Scope: Can be widely used for the level measurement of underground tanks and the containers whose sides should not open.

    Measuring Range:0mm~4000mm(Can be produced beyond the scope)

    Nominal Pressure:≤2.5MPa

    Nominal Diameter:DN150

    Ambient Temperature:-40℃~+80℃

    Working Temperature:-40℃≤T≤+300℃

    Accuracy:±5mm

    Density:Liquid:ρ≥0.5g/cm3    Interface:ρ1-ρ2≥0.16g/cm3

    Wetted Material:304, 316L or as customer requirement

    Flange Standard:HG/T20592-2009, HG/T20615-2009 or as customer requirement

    2. Transmitter Part

    Transmitters are divided into two forms: one is reed-resistance level transmitter, and the other is magnetostrictive level transmitter.

    2.1 Reed-resistance level transmitter

    Remote transmitter is binging on outside of chamber. When float moves up and down with level changes, reed switch corresponding to level will pull in under the action of float magnetic field, so that resistance and current will change, transduction circuit will be transferred into signal of 4-20mA DC to realize remote.

    Measuring Range:300mm~6000mm(Can be produced beyond the scope)

    Power Supply:24V DC

    Output Signal:DC 4mA~20mA +HART

    Ambient Temperature:-40℃~+80℃

    Medium Temperature:-40℃≤T≤+200℃(When T≥150℃,insulation is not allowed for remote part)

    Accuracy:±5mm

    Power Inlet:M20×1.5(Internal Thread)or as customer requirement

    Explosion-proof:ExdⅡCT1~T5/T6 Gb  ExiaⅡCT1~T5/T6 Ga

    Protection Grade:IP66

    2.2 Magnetostrictive remote level transmitter

    Remote transmitter is binding on outside of chamber. There is a magnetostrictive line in remote measuring pipe. Through sensor circuit which is controlled by microprocessor, the equipment launches current pulse along magnetostrictive line, thereby, generates toroidal magnetic field around magnetostrictive line. The magnetic steel inside of float magnetize magnetostrictive line along axial direction. Stacking place of two magnetic fields will generate a reverse pulse, this pulse will transmit to top of sensor along magnetostrictive line, the transmitting time of pulse will be captured and calculated by circuit unit to get the position of float.

    Measuring Range:300mm~6000mm(Can be produced beyond the scope)

    Power Supply:24V DC

    Output Signal:DC 4mA~20mA+HART

    Ambient Temperature:-40℃~+80℃

    Medium Temperature:-40℃≤T≤+450℃

    Accuracy:±5mm

    Protection Grade:IP66

    Power Inlet:M20×1.5( internal thread

    Explosion-proof:Explosion Isolation Type:ExdⅡC T1~T5/T6 Gb  Intrinsically Safe Type:ExiaⅡC T5/T6 Ga

  • LG ORIFICE PLATE, VENTURI, NOZZLE FLOW METERS
    LG model throttle device has variety models according to GB/T2624-2006, ISO5167-1-2003, BS1042-1989 and ASME standards etc. It can be widely used in petrol, petrochemical, chemical, power, light industry, water supply, gas and some other fields....

  • LG ORIFICE PLATE, VENTURI, NOZZLE FLOW METERS

    Overview  

    The LG model flow measurement throttle device is one flow meter with a long history and wide applications. It contains the features of a simply structure, convenient installation, performance stability, and high accuracy. It can be used in the measurement of liquid, steam, and gas in modern industry. Our company adopts advanced calculation and precision working process to manufacture the LG model throttle device, and had variety models according to GB/T2624-2006, ISO5167-1-2003, BS1042-1989 and American Society of Mechanical Engineering standards etc. Full specifications be widely used in petrol, petrochemical, chemical, power, light industry, water supply, gas and some other fields.

    1. Production Standard (Implementation standards)

    1.1 Throttle Device Production Standard (implementation standards)

    Code

    Meaning

    Standard Code

    Y

    Standard Orifice

    GB/T2624—2006(ISO5167—1—2003)

    Q

    1/4 Round Orifice

    BS1042-1989

    T

    Small Caliber Orifice

    BS1042-1989

    M

    ISA1932 Nozzle

    GB/T2624—2006(ISO5167—1—2003)

    C

    ISA1932 Nozzle Long diameter nozzle

    GB/T2624—2006(ISO5167—1—2003)

    I

    Eccentric Orifice

    ASME

    S

    Segmental Orifice

    ASME

    Z

    Rough Casting Shrink Classic Venturi Tube

    GB/T2624—2006(ISO5167—1—2003)

    J

    Machining Shrink Classic Venturi Tube

    GB/T2624—2006(ISO5167—1—2003)

    H

    Rough Welding Iron Plate Shrink Classic Venturi Tube

    GB/T2624—2006(ISO5167—1—2003)

    W

    Venturi Nozzle

    GB/T2624—2006(ISO5167—1—2003)

    1.2 Flange and Gasket Production Standard

    Flange and gasket standards can choose production standard HG/T20592~20614-09 (European Standard) or HG/T20615~20635-09 (American Standard) or other standards.

    2. Other Throttle Devices

    2.1 Venturi Tube

    The device has the advantages of high accuracy, stable performance, low pressure loss (generally between 5% and 20% of differential pressure value), convenient maintenance, especially in the current energy-saving work, with accurate measurement, energy consumption reduction advantages, and has broad prospects in use.

    2.2 Welding Throttle Device

    This is one type of the throttle device,(The device is a kind of throttling device) the feature is simply structure, saving cost, short lead time, (short production cycle) no leaking etc., application in industry high temperature,high pressure medium flow, gas flow measurement.(It is especially suitable for industrial high temperature and high pressure pipeline medium flow, steam flow measurement.)

     


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