Answer / ashish namdev, bina refinery [

all calibration do with a reference. when reference will not
available any calibration can't be done.

Answer / am i nuts?

The above answer is correct. One needs to have a master.

what is the Difference betwee the Hart and smart series Pressure transmitter

1 Answers   HPCL Mittal Pipelines Limited HMEL, Kastech Instrumentation,

---

in valve is constructed as per SME B 16.34, then which standard is used for fire testing of valve?.

0 Answers  

---

what type of cables are used for f&G systems and detectors, what is the standard colour?

2 Answers   Punj Lloyd Ltd,

---

What is the difference between fire detector and smoke detector?

5 Answers  

---

as an instrumentation engineer which are the things we have to know / or we must have idea about that....

2 Answers  

---

if the neutral and ground of ups voltege are connected together in the source itslef then why the voltege b/w neutral and ground comes positive in some other destination inspite of having earth pit. how can we mimmise this?

1 Answers   MPL,

---

what is difference between RTD and Thermocouple?

2 Answers  

---

What is the use of +/- 20ma in analog measurement,and which instrument gives +/-20ma output

1 Answers  

---

can we replace a pressure transmitter of range 0 to 25 Kg/cm2 by a Pressure transmitter of range 0 to 10 Kg/cm2 ?.. Will it affect 4 to 20 mA output signal which we will feed to the PLC.

9 Answers   IOCL,

---

what is the meaing of calibration curve?

3 Answers   HCL, Honeywell,

---

What is the difference between compensation and extension cable.

11 Answers   HPCL,

---

What is difference between “Fault Tolerant” & “Fault avoidance” PLC? Application where these system s are used?

0 Answers  

---