Azbil 700 series - NEPSI Flameproof; Dust Ignition Protection

7-14
7-7 NEPSI Flameproof / Dust Ignition Protection
1. Marking information
Ex d IIC T6 Gb -30°C ≤ Tamb ≤ +75°C IP66
DIP A21 T
A
85°C IP66
2. Applicable standards
- GB3836.1-2010
- GB3836.2-2010
- GB12476.1-2010
3. Special conditions for safe use
- The gap between the shaft for magnetic pass and the pneumatic module body has
0.065mm max.
- The terminal cover has at least 7.5 engaged threads.
- The gap between the pneumatic module body and the housing has 0.13mm max.
- The electronic cover has at least 6.8 engaged threads.
- The gap between the housing and the feedback sensor has 0.11mm max.
- The gap between the flame arrestor and the pneumatic module body has
0.145mm max.
- The gap between the sensor housing and the outside sleeve has 0.07mm max.
- The gap between the rotary shaft and the inside sleeve has 0.07mm max.
- The screws used to assemble the pneumatic body to the Ex d housing shall be of
class A2-70 or A4-70.
- For the use in the area where EPL Db apparatus is required, electrostatic
discharge shall be avoided.
4. Instruction for safe use
4.1
Do not open when an explosive atmosphere is present.
4.2
Use supply wires suitable for 5°C above surrounding ambient.
4.3
When Model No. is given with AVP7xx-xyx-x …,
if y=N,P,U,C, the thread type of the end of all entries is 1/2NPT, or
if y=M, the thread type of the end of all entries is M20.
4.4
To maintain the degree of protection of at least IP66 in accordance with
IEC60529, suitable cable glands, conduit sealing devices or blanking elements
must be used and correctly installed.
4.5
Cable glands or conduit sealing devices used must be certified for the
protection mentioned above in item 1.
4.6
Unused openings must be closed with a blanking element certified for the
protection mentioned above in item 1.
4.7
If thread adapters are used these must be certified for the protection mentioned
above in item 1. Per entry not more than one thread adapter may be used.
4.8
This equipment shall be mounted in such a manner that it is not been heated
by the process medium.