Answer / va

As instruments need clean air supply which should be mixed
with moisture and oil from compressor. For that purpose the
air dyer is used which heat,cool and filter compressed air,
which remove the all above. So it specially used for
instrumentation purpose. So it is called INSTRUMENTATION
AIR COMRESSOR

Answer / abhishek vyas

Basically in organization there diffrent pressure required
say 6kg/cm. sq. to 16 kg/cm.sq. for diffrent purpose so
utility area has configure their compressore as per
pressure required ,6kg/cm.sq pressure is the basic
requirement for control valve,actuator etc so that
compressore is called instrument air compressore which is
producig 7.0 kg./cm. sq. taking the fact in considaration
of Air savig and power saving.

is motorized valve closed when power shutoff?

0 Answers   Unilever,

---

What is sensitivity in vibration probes..?

0 Answers   Lanco,

---

3. Differentiate between ultrasonic flowmeter and radar type flow meter.

0 Answers  

---

why pneumatic control signal output is use 0.2 to 1 kg/cm2

3 Answers   Jindal,

---

how commission a transmitter evev plant is already running

2 Answers  

---

---

list of flame proof certification ?

1 Answers   TATA,

---

We have a Yokogawa Micro-XL DCS, which is having around 300 I/O, but whenever there is any wire gets grounded in field, the 24v supply to all loops gets dipped & all the indications at DCS goes to IOP(shows input open), at present we have fixed 500mA fuses in all the lines but which does not working. Does it required to replace with lower amps fuse, then how much or is there any other solution for this.

2 Answers  

---

what is a vortex flow meter,mass flow meter and electromagnetic flow meter.particular use of this.means in which condition particular meter is used.

0 Answers   L&T,

---

What is an antisurge control system, how it works?

3 Answers  

---

How a oxygen sensor & analyzer work at boiler or furnace, whats the principle & science is beyond this,How O2 sensor sence & convert signal & move toward analyzer & analyzer show reading in percent?

2 Answers  

---

How many types of Control Modes in process control, plz tell me all.....?

2 Answers  

---

Why we use 250 ohm resistor in series with HART protocol communication?

13 Answers   Chemtrols, Instec, Sabic,

---