How Do You Do A Zero Check On A D.p. Transmitter?

How Do You Do A Zero Check On A D.p. Transmitter?
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1 Answer

Answer :

Close one of the valve either H.P. or L.P. open the equalizing valve. The O/P should read zero.
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Related questions

How Do You Calibrate A D. P. Transmitter?

Description : How Do You Calibrate A D. P. Transmitter?

Last Answer : The following steps are to be taken which claribrating : 1. Adjust zero of the Xmtrs. 2. Static preasure test: Give equal pressure on both sides of the transmitter. Zero should not shift. If ... pressure to high pressure side of the transmitter and adjust the span.  Adjust zero again if necessary.

How Do You Carry Out Piping For A Different Pressure Flow Transmitter On Liquids, Gas And Steam Services? Why?

Description : How Do You Carry Out Piping For A Different Pressure Flow Transmitter On Liquids, Gas And Steam Services? Why?

Last Answer : Liquid lines: On liquid lines the transmitter is mounted below the orifice plate. Since liquids have a property of self draining. Gas Service: On gas service the transmitter is mounted above the orifice ... mounted below the orifice plate with condenlate pots. The pots should be at the same level.

How Will You Vent Air In The D.p. Cell? What If Seal Pots Are Used?

Description : How Will You Vent Air In The D.p. Cell? What If Seal Pots Are Used?

Last Answer : 1. Air is vented by opening the vent plugs on a liquid service transmitter. 2. On services where seal pots are used isolate the primary isolation valves and open the vent valves. Fill the line from the transmitter drain plug with a pump.

How Do You Identify The H. P. Side Or Inlet Of An Orifice Plate In Line?

Description : How Do You Identify The H. P. Side Or Inlet Of An Orifice Plate In Line?

Last Answer : The marking is always done H. P. side of the orifice tab which gives an indication of the H.P.side.

Why Is Flow Measured In Square Root?

Description : Why Is Flow Measured In Square Root?

Last Answer :  Flow varies directly as the square root of different pressure F = K square root of ΔP.  Since this flow varies as the square root of differential pressure the pen does not directly indicate flow.  The flow can be determined by taking the square root of the pen. Say the pen reads 50% of chart.

How Do You Calculate New Factor From New Range Using Old Factor And Old Range?

Description : How Do You Calculate New Factor From New Range Using Old Factor And Old Range?

Last Answer : New Factor = _!New Range Old Factor = _IOld Range Flow = K_!Range Q = Factor X Unit Flow New Factor = Old Factor I _IOld Range X _/New Range.

How Would You Do Glycol Filling Or Fill Seal Liquids In Seal Pots 7 Draw And Explain?

Description : How Would You Do Glycol Filling Or Fill Seal Liquids In Seal Pots 7 Draw And Explain?

Last Answer : The procedure for glycol filling is : 1. Close the primary isolation valves. 2. Open the vent on the seal pots. 3. Drain the use glycol if present. 4. Connect a hand pump on L.P. side while ... 9. Close the seal pot vent valves. 10. Close equalizer valve. 11. Open both the primary isolation valves.

An Operator Tells You That Flow Indication Is More? How Would You Start Checking?

Description : An Operator Tells You That Flow Indication Is More? How Would You Start Checking?

Last Answer : 1. First flushing the transmitter. Flush both the impulse lines. Adjust the zero by equalizing if necessary. If still the indication is more then. 2. Check L.P. side for choke. If that is clean then. 3. Check the leaks on L.P. side. If not. 4. Calibrate the transmitter.

What Is The Seal Liquid Used For Filling Impulse Lines On Crude And Viscous Liquid?

Description : What Is The Seal Liquid Used For Filling Impulse Lines On Crude And Viscous Liquid?

Last Answer : Glycol.

What Is Bernoulli’s Theoram And Where It Is Applicable?

Description : What Is Bernoulli’s Theoram And Where It Is Applicable?

Last Answer : Bernoulli’s theoram states the “total energy of a liquid flowing from one point to another remains constant.” It is applicable for non compressible liquids.

Why Is The Orifice Tab Provided?

Description : Why Is The Orifice Tab Provided?

Last Answer : The orifice tab is provided due to the following reasons: 1. Indication of an orifice plate in a line. 2. The orifice diameter is marked on it. 3. The material of the orifice plate. 4. The tag no. of the orifice plate. 5. The mark the inlet of an orifice.

How Do You Identify An Orifice In The Pipe Line?

Description : How Do You Identify An Orifice In The Pipe Line?

Last Answer : An orifice tab is welded on the orifice plate which extends our of the line giving an indication of the orifice plate.

What Are The Different Types Of Orifice Plates And State Their Uses?

Description : What Are The Different Types Of Orifice Plates And State Their Uses?

Last Answer : The different types of orifice plates are: 1. Concentric. 2. Segmental. 3. Eccentric. CONCENTRIC: The concentric orifice plate is used for ideal liquid as well as gases and steam service. This orifice ... hole in the form segment of a circle. This is used for colloidal and sherry flow measurement.

What Are The Primary Elements Usedfor Flow Measurement?

Description : What Are The Primary Elements Usedfor Flow Measurement?

Last Answer : The primary elements used for flow measurement are: 1. Orifice Plate. 2. Venturi tube. 3. Pitot tube. 4. Annubars. 5. Flow Nozzle. 6. Weir & Flumes.

Define All The Process Variable And State Their Unit Of Measurement?

Description : Define All The Process Variable And State Their Unit Of Measurement?

Last Answer : 1. FLOW: Kg I hr, Litter I min, Gallon I min. M3 I NM3 I HR. (GASES) 2. PRESSURE: Force acting per unit Area. P = F/A Units: Bar I Pascals I Kg I CM I, Pounds 3. LEVEL: ... Degree Farenheit, Degree Kelvin, Degree Rankin. 5. QUALITY: It deals with analysis PH, % C02, % 02, Conductivity, Viscosity.

What Are The Process Variable?

Description : What Are The Process Variable?

Last Answer : The process Variable are: 1. Flow 2. Pressure 3. Temperature 4. Level 5. Quality i. e. % D2, C02, PH etc.

How will you check zero of a level D.P. transmitter while is line ?

Description : How will you check zero of a level D.P. transmitter while is line ? 

Last Answer : ١. Close both the isolation valves. ٢. Open the vent valve on L.P. leg and H.P. leg drain. ٣. Check and adjust zero if necessary. 

How do you do a zero check on a D.P. transmitter ?

Description : How do you do a zero check on a D.P. transmitter ?

Last Answer : Close one of the valve either H.P. or L.P. open the equalizing valve. The O/P should read zero.

Describe the zero-position of a synchro transmitter.

Description : Describe the zero-position of a synchro transmitter.

Last Answer : The transmitter is in its zero-position when the rotor is aligned with the S2 stator winding.

Do You Know How D.p. Transmitter Can Be Applied To Close Tank?

Description : Do You Know How D.p. Transmitter Can Be Applied To Close Tank?

Last Answer : In closed tank, bottom of the tank is connected to the high pressure side of the transmitter. Top of tank is connected to the lower pressure side of the transmitter. In this way vessel pressure can be measured.

Explain How D.p. Transmitter Can Be Applied To Open Tank?

Description : Explain How D.p. Transmitter Can Be Applied To Open Tank?

Last Answer : In open tank the lower pressure side is vented to the atmosphere. All pressure is applied to the high pressure side. This vessel pressure is measured through high pressure side.

Explain How Can A D.p. Transmitter Be Calibrated?

Description : Explain How Can A D.p. Transmitter Be Calibrated?

Last Answer : D.P. transmitter can be calibrated using following steps: 1. Adjust zero of Xmtrs. 2. Perform static pressure test: Give equal pressure on both sides of transmitter. Zero should not shift either ... Apply required pressure to the high pressure side and adjust the span. Adjust zero gain if necessary.

How D.p. Transmitter Can Be Applied To Open Tank?

Description : How D.p. Transmitter Can Be Applied To Open Tank?

Last Answer : In open tank the lower pressure side is vented to the atmosphere. All pressure is applied to the high pressure side. This vessel pressure is measured through high pressure side.

How D.p. Transmitter Can Be Applied To Close Tank?

Description : How D.p. Transmitter Can Be Applied To Close Tank?

Last Answer : In closed tank, bottom of the tank is connected to the high pressure side of the transmitter. Top of tank is connected to the lower pressure side of the transmitter. In this way vessel pressure can be measured.

How Can A D.p. Transmitter Be Calibrated?

Description : How Can A D.p. Transmitter Be Calibrated?

Last Answer : D.P. transmitter can be calibrated using following steps: 1. Adjust zero of Transmitter. 2. Perform static pressure test: Give equal pressure on both sides of transmitter. Zero should not ... Apply required pressure to the high pressure side and adjust the span. Adjust zero gain if necessary.

Why are two plugs provided on a D.P transmitter?

Description : Why are two plugs provided on a D.P transmitter? 

Last Answer : 1.The top plug is a vent plug for venting the air entrapped inside the cell. 2.The bottom plug is a drain plug for draining the liquid accumulated inside the cell.  

How will you commission D.P. transmitter in field in pressurized vessel.

Description : How will you commission D.P. transmitter in field in pressurized vessel.

Last Answer : ١. Close both the isolation valves, Vent the H.P. side. ٢. Fill it with the sealing liquid. ٣. Open the L.P. side vent valve. ٤. Adjust zero with suppression spring. ٥. Close the L.P. side vent valve. ٦. Open both the isolation valves.  

How is D.P. transmitter applied to a close tank ?

Description : How is D.P. transmitter applied to a close tank ?

Last Answer : In close tank the bottom of the tank is connected to the high pressure side of the transmitter and top of the tank in connected to L.P. side of the transmitter. In this way the vessel pressure is balanced.

How do you calibrate a D. P. transmitter?

Description : How do you calibrate a D. P. transmitter?

Last Answer : The following steps are to be taken which calibrating: 1. Adjust zero of the Tx'r. 2. Static pressure test : Give equal pressure on both sides of the transmitter. Zero should not shift. If ... pressure to high pressure side of the transmitter and adjust the span. 6. Adjust zero again if necessary.

To properly use a hook-on-type volt/ammeter to check current flow, you must FIRST _____________. A. de-energize the circuit to allow connection of the instrument in series B. hook the jaws of the instrument around the insulated conductor C. connect the voltage test leads to the appropriate terminals D. short the test leads and calibrate the instrument to zero

Description : To properly use a hook-on-type volt/ammeter to check current flow, you must FIRST _____________. A. de-energize the circuit to allow connection of the instrument in series B. hook the jaws ... test leads to the appropriate terminals D. short the test leads and calibrate the instrument to zero

Last Answer : Answer: B