Answer / r k nair

Normal Cable Gland is also called Single Compression Cable
Gland. As the name suggests, while you tighten the gland,
the grip or compression is effected only at one p[lace
(i.e.) at the cable armour only. There is scope for
moisture and corrosive vapour to enter the gland and thus
into the cable.

Whereas in Double-Compression Glnad, the compression
happens both at the cable armour as well as at the inner
sheath. This is sort of two sealings. Hence, chances of
moisture or vapour entry are minimised. Hence these glands
are also known as Weather-proof cable glands or Flame-proof
cable glands.

Answer / raffi

Single compression glands used for the unarmoured
cables.since you can make the grip only on cable sheath
whereas Double compression glands are used for armoured
cables as we can tight it with both cable inner sheath also
in cable armour.

Both glands can be used for exlosion proof areas, only
thing is that it should be certified for zone
classifications

Answer / sumith

single compression cable gland is used for normal panels and
it is not airtight.(it cant be used in flammable areas)
double compression cable gland is used for air tight panel i.e
purge panels(used in flammable areas)

What are the application of bernoulli’s theorem?

0 Answers  

---

Explain plc level and its type?

0 Answers  

---

how is hazardous and non hazardous area classified?

2 Answers   Bhel, Power Plant, Samsung,

---

hi this is noor i wnt know the procedure and precations errection for PRESSURE AND DP transmitters? how to take impusle line for level and flow?(water and steam) impulse line sizes? and type of material ? plz give me answer / reffer any website ? to me "mail2noor.hyd@gmail.com"

1 Answers  

---

when a magnet is heated?

0 Answers  

---

---

Q- Which of the following is Close loop system - a-)respiratory System b-)traffic light system c-)washing machine d-)Room heater my option is A, what is our take on option B & C

4 Answers   Sail,

---

pls suggest suitable MOC of diaphragm for pressure measurement of UREA grade solution service fluid.

0 Answers   Siemens,

---

why orfice is not used for main steam flow calculation

0 Answers   OEG,

---

In my plant I want to mount a steam flow transmitter .Flow nozzel is already mounted in steam line .So how can i know the range to put in flow transmitter?

1 Answers  

---

what is ILD

1 Answers  

---

How many loops are there in the power plant? how many closed & open loop in the power plant ? Please give me the exact clarification?

2 Answers   Lanco, Reliance,

---

How to convert mA into Percentage?

4 Answers   KNPC,

---