Answer / pooja

use latch after pushbutton and then output
or
give memory in or to pushbutton and then output.

Answer / bppatel

you can use this with holding contact

Answer / nirmalya basu

If u r in programming just connect the input without latch
to the output that input will act as a toggle switch or u
can use OSR in the programming it helps u to energies and
deenergise an output with a single button.

why we take 4 to 20 mA as out put of every instrument like pressure transmittre ?why we cant take 0 to 20mA as output?

6 Answers   OGDCL,

---

how can calibrate transmitter online

2 Answers  

---

what is a half wave, full wave, and bridge rectifer.

0 Answers   Takreer,

---

How to connect PLC to DCS ?

2 Answers   Alkyl Amines,

---

Differentiate between PLC, SCADA and DCS systems

1 Answers   Mumias Sugar, SRF, Trimula Industries,

---

---

what is dry leg and what is wet leg?

3 Answers  

---

What is re-latch the manual trigger in solenoid valve

0 Answers   Valvitalia Systems Division,

---

How can one improve linearity of an RTD based temperature measurement system?

2 Answers   Honeywell,

---

How to adjust the zero & span of a control valve from the posiitioner(MIL)?

1 Answers   Bhel, SMC,

---

what is the difference between AUTOMATION AND INSTRUMENTATION?

7 Answers  

---

what are the on/off valve precaution?

1 Answers   Reliance,

---

what is scale factor of proximitor & unit of the vibration.

0 Answers   ADMA OPCO,

---