Single Flange Pressure Transmitter with Digital Display Meter Can Field Display Measured Values

I. Overview of products
    The output of pressure (liquid level) transmitter is divided into: Standard 24VDC power supply 4 ~ 20MA output, nonstandard type 0 ~ 10MA / 0 ~ 5V output.
Variable output as integrated. Using diffusion silicon with 316 isolation diaphragm pressure sensor signal, sent by the integrated circuit,
a pressure signal amplifying and then converted into 4 ~ 20mA / 0 ~ 10mA of output current, or 0 ~ 5V voltage output.
    Transmitter has the following characteristics: constant current / voltage excitation and signal amplitude as high as to 0 ~ 150MV,
high precision, good linearity, good long-term stability, 316 steel or ceramic corrosion, output signal can be remote installation and use of the maintenance is very convenient.
Transmitter with digital display meter can field display measured values, the series products can be widely used in industrial process control, liquid level measurement,
boiler control, environmental control, metallurgical industry, petrochemical industry, hydro electricity, food, medicine and other fields.
II.Working principle
    Pressure sensor is on the silicon substrate or a ceramic diaphragm diffusion on a Wheatstone bridge or closed bridge, voltage resistance effect of the four bridge wall resistance value changes,
and produces a differential voltage signal. The signal is amplified by the amplifier for voltage to current converter, and the corresponding range, send.
III.The main technical performance
    Measurement range: -0.1... 0 ~ 0.01... 100MPa
    Over load: 2 times the full range pressure
    Type: pressure gauge or absolute pressure gauge type or seal
    Accuracy: ±0.25%FS (typical) (Diffusion silicon),±0.5%FS (maximum) (ceramic pressure resistance), ±0.1%FS (high accuracy) (ceramic capacitor)
    Stability: ±0.1%FS/ years (typical), ± 0.2%FS/ years (max.)
    Zero drift: ±0.03%FS/℃(≤100kPa)， ±0.02%FS/℃(＞100kPa)
    Full scale drift: ±0.03%FS/℃(≤100kPa)，±0.02%FS/℃(＞100kPa)
    Temperature of the medium:-40~85℃ (diffuse silicon), -40~135℃ (ceramic pressure resistance, ceramic capacitance)
    Storage temperature: -40~120℃
    Power supply: 10 ~ 36VDC (recommended 24VDC. intrinsically safe by the security gate)
    Output signal:4～20mADC ， 0/1～5/10VDC(non-standard customization)
    Load resistance:≤(U-15)/0.02Ω ，≤(U-15)/0.02Ω ，  ＞5k
    Process connection:M20 * 1.5 external; M27 * 2 external; clip connection (other customizable)
    Enclosure protection:Cable and connector are both IP65
    Stability stability: ≤0.2%FS/years
IV.Explosion-proof type transmitter use instructions and installation, using attention to matters
1 explosion-proof type and logo
    This transmitter separates the explosive and intrinsically safe two kinds, and obtains the explosion-proof certificate after the national designated explosion-proof inspection agency inspection.
    A, explosive type:Exd ⅡCT6 Certificate number CNEx03.1088 B, intrinsically safe:Exia ⅡCT6 Certificate number CNEx03.821；CNEx03.822
2 explosive environment for explosion proof electrical equipment: type, grade and temperature grade
    A category I: electrical equipment for underground coal mine; II: except for other electrical equipment used in the factory except the coal mine.   
   The transmitter belongs to class II electrical equipment.
    B level and temperature group
    Class II electrical equipment is applied to the maximum safety gap MESG (for the explosion gas mixture) and the minimum ignition current MIC ratio (for intrinsically safe).
    It was divided into A, B, C three (see Table 1-1) and its highest surface temperature was divided into T6 ~ T1 group (see table 1-2).
Table 1-1MICR table

The transmitter is strictly according to GB3836.15-2000 "explosive gas environment with electrical equipment fifteenth parts: electrical installation of dangerous places (except coal mines)" the relevant terms of the installation.
    Burst transmitter in dangerous places use isolation, casing cover of the transmitter must be tightened to ensure safe use should be strictly comply with the safety rules and procedures,
absolutely not allowed in the current open transmitter shell cover. In the installation of the explosion-proof type transmitter, should ensure that the lead of the cable is well sealed.
The transmitter housing must be grounded well.
    Intrinsically safe type transmitter must be equipped with safety gate can be used in dangerous places with explosive mixture.
Safety barrier shall be in accordance with gb3836.4-2000 the explosive gas environment with electrical equipment Part 4 intrinsically safe type "I",
the provisions of and by explosion-proof departments concerned were explosion-proof test and made explosion-proof certification.

Applications