Answer / mk07

HART protocol is one type of SMART series Transmitter which comes in SMART series transmitters.
HART
Foundation field Bus
BRAIN

the above mentioned types are comes in SMART series Transmitter.

please tel me the calibration of pneumatic controler.

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Who to difference between analog in & analog out in dcs?

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What is the difference between local indicator(flow) and flow indicator?

2 Answers  

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what is interlock ckt? why it is necessary in industrial machines ?

2 Answers   IOCL,

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Q1: Consider part of a control loop, which excludes the transmitter, consisting of a process, a controller and a control valve which may be represented by two dead times of 0.5 min each and three exponential lags of 0.8 min., 1.0 min. and 1.5 min. respectively. We wish to express this system as an overall first order plus dead time (FOPLD) model ie gain, time constant and process dead time. (We will see later that this is often done, to simplify controller tuning). For this exercise, gain is considered to be 1.0. (A) If the transmitter is a flow transmitter whose behaviour can be described by a dead time of 0.2 min. and an exponential lag of 0.5 min. in terms of the overall dead time and overall first order lag how can the system behaviour be approximated ? Overall dead time = Overall time constant = (B) If the transmitter is a temperature transmitter with a temperature sensor in a protecting well whose behaviour can be described by a dead time of 0.7 min. and an exponential lag of 15 min. how can the overall system behaviour be approximated now? Overall dead time = Overall time constant =

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If I want to buy a pressure switch & 3-way valve for hot water application then witch parameter I should consider.

1 Answers  

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What is cold junction compensation in thermocouples? How is it achieved?

4 Answers   Honeywell,

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for oil & gas industries which zone is normally preferred? why? give its example?

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steam drum level transmitter calibration procedure? with example?

1 Answers  

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What is duty of as-built engineer.

2 Answers   Sofcon,

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how u meassure room temp?is it possible 2 meassure room temp by rtd or thermocouple?between rtd n thrmocouple which is more regard?3 meassure diff. between rtd n thermocouple?

3 Answers  

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how we calculate the range of flow from a dp?i mean if we have a dp,3810mm h2o.how much flow ranges we can use for this DP?

1 Answers  

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