Answer / vinoth.s

Turndown RATIO= MAXIMUM ALLOWABLE VALUE/ MINIMUM CONTROLABLE
VALUE.... SIMPLY DIVIDING THE UPPER RANGE/ LWER RANGE

we re giviang 24v supply to transmitter and we getting output from tx?now my question is wht we call this complete proces?

2 Answers  

---

Define the difference between a stable versus an unstable controlled system and some of the tools you might use to be able to detect when this is happening and assumptions used for control system application design that could contribute to instability

0 Answers  

---

Difference between ultrasonic flow meter and radar type flow meter

2 Answers   Dodsal, Qatar Petroleums,

---

what is the difference between plc & DCS?

5 Answers   Cheminova, NGIL, Siemens,

---

What is i/e or o/p transmitter(ma/v)?

1 Answers   Emco,

---

---

What is electronics?

6 Answers   ITC Infotech,

---

WHAT IS THE DIFFERENCE B/W PLC and DCS

10 Answers   Bhel,

---

what is the standard of determining opening/closing time of Motor Operated Valve?

1 Answers  

---

If a differential pressure transmitter is calibrated for 0~2500 mmH2o and transmits a 4~20mA dc signal. The transmitter is placed across an orifice plate which is sized to create 2500 mmH2o differential at 5000m3/Hr a) what is the flow rate when the transmitter signal is 13.0mA DC? b) what is the signal output of the transmitter when flow rate is 2500 m3/Hr ?

5 Answers  

---

how u calibrate pneumatic n motorized c/v?

0 Answers  

---

Explain PID, ON/OFF, Controls

0 Answers   CCIE, Gulf Engineering,

---

what is difference between 3 wire and 4 wire RTD sensor?

12 Answers   HTA Instrumentation,

---