Detail:
I. overview:
The product according to GB3836.1 - 2000 "explosive gas environment with electrical equipment first parts: General requirements", GB3836.4 - Fourth "explosive gas environment with electrical equipment 2000 parts: essential safety type" I "related to manufacturing and production, explosion-proof mark for [Exib] II CT6, the national designated inspection agency inspection certificate.
SWP8047-EX detection terminal isolation type safety gate, from the safe area to provide a separate DC power supply to the dangerous area of the second system, while the two line transmitter to the 4 ~ DC 20mA signal converted into a 1 ~ 20mA ~ 5VDC/4 DC signal output.
Two, the main technical performance:
Explosion proof mark: [Exib] II CT6
Explosion-proof parameters: Uo = 35V, Io = 35mA, C = 0.045uF o, L o 2mH,
P o = 0.3W Um=250VAC/DC
Input: 7 + 8 danger zone - 4 ~ 20mADC
Distribution voltage: 18.5~28.5VDC
Power supply voltage: 24VDC 10%
Safety zone: 4 + 5 - output 4 ~ 20ADC or 1 + 2 - 1 ~ 5V.DC,
Output load: 750 (internal 250)
Accuracy: 0.2%
Power consumption: 1.5W
Ambient temperature: +5 40
Relative humidity: 35% ~ 85%RH
Storage temperature: -40 85
Weight: About 150g
Installation place: the ambient air should not contain chromium, nickel, silver plating corrosive action of the medium.
Application of field equipment: second line pressure transmitter and second line system temperature transmitter, etc..
Three, wiring diagram
Four, the installation method and installation size: (standard DIN Guide)
Five, the installation of attention:
1 isolated safety gate should be installed in non hazardous areas.
2 the area of the soft copper wire to the site (dangerous place) of the isolated safety gate must be greater than 0.5mm2.
3 the insulation strength of the connecting wire should be greater than 500V.
4 isolated batviers end (blue marker) intrinsically safe and non safe terminal wiring, not wrong and confused. This wire should use blue as safe marker. Intrinsically safe and non intrinsically safe wire wire should be separated by their respective laying, protective sleeve in the sink in the slot. Intrinsically safe side safety barrier, mixed with other power supply is not allowed, including other intrinsically safe circuit.
5. Isolated safety barrier and a instrument consisting of intrinsically safe explosion-proof system must be approved by the designated national explosion-proof inspection agencies inspection approval. SWP8000-EX series of isolated safety barrier by the state supervision and Inspection Center for explosion proof electrical and given co lo distribution parameters is relative and PI class C (hydrogen) of the maximum allowable value for PI B environment to the parameter multiplied by 3. For PI grade a environment can throw the parameter is multiplied by 8. When the cable is used in different specifications, the cable parameters of the transmission line should be attached great importance, and no more than the specified value.
6 for the isolation of a separate pass through the safety gate, it is necessary to pay attention to the type of isolation safety gate, power polarity, voltage grade and the grade of the isolation safety gate.
7 is prohibited to use the gauge of the insulation between the isolated safety gate terminal. To check the insulation of the system line, should first disconnect all the isolation type safety gate wiring, otherwise it will cause internal device damage.
8 where the field instrument is connected with the isolated safety gate, the instrument shall be in the form of explosion proof test and obtain the certificate of explosion-proof.
9 in principle, if the internal module of the isolated type of safety barrier is required for maintenance or replacement, the manufacturing plant shall bear the principle. Users should pay attention to the maintenance of their own, according to the relevant matters, the specific method in accordance with the maintenance of the chapter (essential safety instrument maintenance is limited to the scope of the maintenance should be discussed with the manufacturing plant). Can be re put into operation after the maintenance.
10 the installation, use and maintenance of the isolation safety gate shall be strictly in accordance with the relevant provisions of the fifteenth part of the electrical apparatus for explosive gas atmospheres (.GB 2000): hazardous areas and electrical installations (except coal mines).
11 to obtain the product of the explosion-proof certificate, do not allow arbitrary replacement of components or structures that affect the performance of the explosion
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