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K-TEK AccuTrak AT100, Руководство по установке и эксплуатации

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AT100-0200-1 Rev L (10-2010) DCN0528                                                                

    

 

 

 

7 

4.1   Level Output Calibration 

 

The AT100 is a digital transmitter with no routine calibration required.  If re-calibration is required, calibration 

can be changed using the module pushbuttons, a HART communicator (for units with the HART option), or with the 
menu driven LCD readout (for units with LCD option). 
 

4.1.1  Calibration Using the Pushbuttons 

 

Setting the 4mA point: 

 

-Establish a tank level of 0% or move the float to the desired 0% point 

 

-Enter the calibration mode by pressing the UP

 

& DOWN

 

buttons together for 1 second. 

 

-Press the DOWN

 

button for 1 second to set the output at 4.00mA. 

 

Setting the 20mA point: 

 

-Establish a tank level of 100% or move the float to the desired 100% point 

 

-Enter the calibration mode by pressing the UP

 

& DOWN

 

buttons together for 1 second. 

 

-Press the UP

 

button for 1 second to set the output at 20.00mA. 

 

Note:

 

The above steps can be repeated as many times as required

  

 

4.2  Reversing Action 

 

If required, transmitter output can be reversed by following these steps (Note: this only reverses the 4-20 mA 

output, not the Engineering Unit Readout) 
 

4.2.1  Reverse Action Calibration Using The Pushbuttons 

1.  Adjust the tank level to 50% or move the float to the 50% point ( + or - 10% ). 

-Enter the calibration mode by pressing the UP & DOWN

 

buttons together for 1 second and press 

the DOWN

 

button for 1 second to set the output at 4.00 mA. 

2.  Adjust the level or move the float to the new SPAN (20.00mA) point. 

-Enter the calibration mode by pressing the UP & DOWN buttons together for 1 second and press 

the UP button for 1 second to set the output at 20.00 mA. 

3.  Adjust the level or move the float to the new ZERO (4.00mA) point. 

  -Enter the calibration mode by pressing the UP & DOWN buttons together for 1 second and press 

the DOWN button for 1 second to set the output at 4.00 mA. 

 

Note:

 Procedures 4.1.1 and 4.2.1 will only change the calibration for the selected Primary Variable. 

4.3   Damping  

 

Damping  helps  to  reduce  the  affects  of  rapid  or  irregular  movement  of  the  fluid  level  in  a  tank  or  vessel.   

Adjustments to Damping will either increase or decrease the time required for the transmitter output to respond to 
changes  in  input  from  the  sensor  tube.    A  higher  number  allows  for  more  output  stability.    A  lower  number  will      
provide a quicker response.  The maximum response time to a process change will be less than 110 milliseconds or 
the value of the Damping, whichever is greater.  The factory default setting for Damping is 0.8 seconds. 
 

 

The output damping amount can be changed as follows: 

       

-Press the SELECT and UP buttons together for 1 second to double the damping value. 

 

-Press the SELECT and DOWN buttons together for 1 second to divide the damping value by 2. 

 

The Damping value may also be adjusted in the Calibration Menu on transmitters equipped with an LCD Display.  
The Damping is adjustable from 0 to 36 seconds. 

4.0 TRANSMITTER CALIBRATION AND SETUP 

Содержание AccuTrak AT100

Страница 1: ......

Страница 2: ...P 10 4 9 2 Temperature Output Calibration 11 4 9 3 Temperature Reset TMP RSET 11 4 9 4 Temperature Master Calibration 11 4 10 Volumetric Strapping 12 4 10 1 How the Strapping Table Works 12 4 10 2 Setting Up or resetting the Strapping Table 12 4 10 3 Selecting the Input Mode Automatic or Manual 12 4 10 4 Setting Up Strapping Table Points 13 4 10 5 Notes on Strapping Table Usage 13 4 10 6 Saving Lo...

Страница 3: ...out 21 6 5 4 20mA HART Transmitters 23 6 6 Foundation Fieldbus Transmitters 24 6 7 Verify Proper Power Up of the Transmitter 25 6 8 Verify Current Output Stability 25 6 9 Threshold Adjustment 26 6 10 Module Replacement 26 6 11Terminal Strip Checkout 26 6 12Threshold Adjustment Using an Oscilloscope 27 7 0 NAMETAG INFORMATION 28 8 0 WIRING DIAGRAMS 29 8 1 FM CSA 29 8 2 ATEX IEC 31 8 3 Typical Loop ...

Страница 4: ...hnology available for liquid level interface measurement and control K TEK AT100 s can be equipped to provide two 2 level indications one for interface and a second for total level Designs are available for differences of specific gravity down to 0 04 differences Most commonly applied to oil and water separator interface this technique is used in many process applications Others include HF acid pr...

Страница 5: ...ked with Top for SPM or Top for AT this end of the float must face the transmitter head Other floats may be marked with an arrow indicating the proper orientation If a float is etched with information but does not indicate a proper orientation it will be bidirectional and can be installed in either direction If a float does not have any markings sanitary applications it will have an extra rolled s...

Страница 6: ...ith 1 compression fitting and thread into assembly using thread locking fluid to secure the joint 7 Thread the tube compression fitting into the mounting flange using thread sealant 8 Lower the tube assembly until it hits the bottom of the tank Raise the sensor well back up and secure the assembly in place by tightening the tube compression fitting WARNING When handling flexible tube do not bend a...

Страница 7: ...d to set the output at 4 00 mA 2 Adjust the level or move the float to the new SPAN 20 00mA point Enter the calibration mode by pressing the UP DOWN buttons together for 1 second and press the UP button for 1 second to set the output at 20 00 mA 3 Adjust the level or move the float to the new ZERO 4 00mA point Enter the calibration mode by pressing the UP DOWN buttons together for 1 second and pre...

Страница 8: ... CAL Calibration MENU CFG Configuration MENU END LRV Lower Range Value LRC Lower Range Current 2 URV Upper Range Value URC Upper Range Current 2 DMP Dampening LTT Lower Temperature Trim 1 UTT Upper Temperature Trim 1 LVV Lower Volume Value 1 UVV Upper Volume Value 1 VOL TABL MENU 1 END DAC TRIM MENU I20 Input Point 20 I01 Input Point 1 O20 Output Point 20 TBL SAVE VST RSET TBL LOAD END O01 Output ...

Страница 9: ...4 5 Selecting a Primary Variable PV This section applies to dual float transmitters only For a dual float transmitter the primary variable LL1 or LL2 defines the float used to calculate current mA output If the primary variable is set to LL1 current output will be determined by the position of the float nearest the transmitter housing Alternately if PV is set to LL2 current will correlate to the f...

Страница 10: ...o change the value in Engineering Units of the level offset to be applied For dual float units Level 2 can be offset via the above steps with the L2O menu option 4 9 1 Selecting the Unit of Temperature EUN TEMP The unit will display temperature in either Celsius or Fahrenheit degrees Selecting the Unit of Temperature Under the CFG menu go to the EUN TMP menu option Press SELECT then press UP or DO...

Страница 11: ...pply power 4 9 2 Temperature Output Calibration The transmitter is factory calibrated to an accuracy of 0 5 Celsius over a range of 200 to 300 C Fine calibration and trim for a custom range can be done via the following steps Setting the Lower Temperature Trim LTT Bring the sensor located near the bottom of the transmitter probe to the temperature that will be the lower end of the temperature rang...

Страница 12: ...rresponds to volume An I is listed for each input point which corre sponds to linear measurement If in manual mode both output and input points will be available In automatic mode only output points will be shown 4 10 2 Setting Up or resetting the Strapping Table Under the CAL menu Scroll to VOL TABL then press SELECT Scroll up to VST RSET then press SELECT This will erase any table points current...

Страница 13: ...t up sequentially from VMN at 0 measurement to VMX at UTP It is not necessary to use all of the points in the Volume Table Since the table is based on VMN and VMX any change to either of these will invalidate the table Therefore once the table is properly set up DO NOT change either of these settings 4 10 6 Saving Loading a Strapping Table Because setting up the strapping table can be a time consu...

Страница 14: ...own to LRC and press SELECT 9 Using the UP and DOWN buttons enter the digits corresponding to the mA value that will be associated with the measurement in LRV Press SELECT after each digit is set to move to the next digit 10 Scroll down to URC and press SELECT 11 Using the UP and DOWN buttons enter the digits corresponding to the mA value that will be associated with the measurement in URV Press S...

Страница 15: ...n alarm condition 20 97 or 3 61 mA or does not have a float present on the sensor tube the handheld communicator will respond as if the transmitter had a hardware failure If there is a float present proceed with troubleshooting in Section 6 5 2 Honeywell DE Protocol 5 2 1 Interoperability and Conformance Class The Honeywell DE Protocol option uses the Honeywell proprietary Digitally Enhanced Proto...

Страница 16: ... Ground Phase Neutral Ground Panel Ground Analog Ground Tree Topology 5 3 2 Electrical Considerations Power Supply The transmitter requires between 9 and 32 V dc to operate and provide complete functionality The DC power supply should provide power with less than 2 ripple Various types of Fieldbus devices may be connected on the same bus The AT is powered via the bus The limit for such devices is ...

Страница 17: ...other devices on the same bus must use the same signaling 12 to 16 devices can be connected in parallel along the same pair of wires 5 3 5 DD Files The incorporation of the AT100 transmitter in a control system will require the use of specific DD files within the host system These files may be downloaded from www fieldbus org 5 3 6 Transducer Block The Transducer Block contains transmitter specifi...

Страница 18: ...The AT transmitter is equipped with 5 PID Proportional Integral Derivative Blocks These blocks can be used to implement control algorithms within the transmitter The output of the PID Block can be linked to the AO Analog Output Block of another instrument like a valve or to the input of another PID Block 5 3 11 2 Offsetting a Measurement Using the same example in section 1 the level indication can...

Страница 19: ...r is equipped with more than one float and or a temperature indication only the process variable selected by the PV menu option will be considered as a safety function as this selected variable will be the basis for the 4 20mA output The AT100 transmitter may only be used in a safety related system when the mode of that system is low demand As a device the AT100 transmitter will be used to provide...

Страница 20: ...t the spacer be replaced when the transmitter is reassembled 6 4 Safety Inspection Test An AT100 transmitter can be divided up into four major components the float the sensor the transmitter and the output All of these components and their subcomponents should be evaluated during each periodic inspection This inspection and possible repair should take less than 4 hours if the proper tools are made...

Страница 21: ...unicate with the AT transmitter as a Generic Device If the output of the transmitter becomes latched the HART handheld will respond with a warning that the Process Variable is out of range To overcome the error press OK when prompted to ignore the next 50 occurrences 6 0 SAFETY MAINTENANCE AND TROUBLESHOOTING 6 4 2 Sensor Inspection The sensor of the AT100 consists of a metal tube containing sever...

Страница 22: ...ing the float is not possible the loop may be checked using an independent device such as a loop calibrator With HART communications With the transmitter installed wired and powered in its field location and power supplied to the loop connect a HART handheld device to the loop across a 250 ohm resistor Using the Loop Test feature of the HART handheld drive the output of the transmitter to 4mA and ...

Страница 23: ...pecific gravity Inspect the sensor tube for buildup on probe LCD display not lit No power to the transmitter Check the field wiring for proper polarity and supply voltage at the transmitter Electronics module failure Replace the existing module with a known working module Output does not match display DAC Trim Perform the DAC Trim procedure Section 4 8 Terminal Strip Failure Check the terminal str...

Страница 24: ...e upper position and cycle the power Transmitter in Simulate Mode Set the value of SIMULATE AI Block to Disable Faulty AI Block configuration Review the AI Block configuration to confirm the required output will be generated BLOCK_ERR Block Configuration Error XD_SCALE does not have a suitable engineering unit Ensure the engineering unit used in the XD_SCALE is a valid linear measurement unit XD_S...

Страница 25: ...s back down again 4 00 20 00mA Normal output range 3 85 mA Latched Low When the level decreases below the 4 mA point the output will continue down to 3 85 mA and then latch at this value until the level comes back up again 3 61 mA Low Alarm The LCD Display will indicate level as If the top board jumper is set to LOW ALARM a loss of signal or a problem with the configuration or a malfunction will c...

Страница 26: ...oosing calibration and setup configuration Before removing the electronics module for replacement or upgrade the AT100 transmitter should be taken out of service To remove the electronics module simply loosen the 2 mounting screws unplugging the module from the housing and replace it with the new module The software revision of a transmitter can be identified by a tag on the back of the electronic...

Страница 27: ...eft for probe connections Connect probe tip to the Return Pulse Move probe tip to the pin below it to measure the threshold voltage Set range to 500 mV DC Channel B Connect probe to the Start Pulse Connect the probe ground to the common Set range to 2VAC Division Timing and Trigger Set the time to 50 100 200uSec Division Note The lower the float is the farther the return signal is from the start p...

Страница 28: ...TEMP HOUSING 20 TO 66 C SENSOR SENSOR MAX PRESSURE CAUTION OPEN CIRCUIT BEFORE REMOVING COVER ATTENTION OUVRIR LE CIRCUIT AVANT D ENLEVER LE COUVERCLE LOUISIANA 70769 MADE IN USA SERIAL TAG NO MODEL NO CAUTION OPEN CIRCUIT BEFORE REMOVING COVER ATTENTION OUVRIR LE CIRCUIT AVANT D ENLEVER LE COUVERCLE MAX TEMP HOUSING 170 F SENSOR SERIAL TAG NO MODEL NO WORKING MAX PRESSURE MADE IN USA FM NEMA 4X T...

Страница 29: ...AT100 0200 1 Rev L 10 2010 DCN0528 29 8 0 WIRING DIAGRAMS 8 1 FM CSA ...

Страница 30: ...AT100 0200 1 Rev L 10 2010 DCN0528 30 8 1 FM CSA continued 8 0 WIRING DIAGRAMS ...

Страница 31: ...AT100 0200 1 Rev L 10 2010 DCN0528 31 8 2 ATEX IEC 8 0 WIRING DIAGRAMS ...

Страница 32: ...AT100 0200 1 Rev L 10 2010 DCN0528 32 8 2 ATEX IEC continued 8 0 WIRING DIAGRAMS ...

Страница 33: ...AT100 0200 1 Rev L 10 2010 DCN0528 33 8 3 Typical Loop Wiring Diagram 8 0 WIRING DIAGRAMS ...

Страница 34: ...AT100 0200 1 Rev L 10 2010 DCN0528 34 8 4 Loop Powered TX Hookup RI Dual Compartment Housing 8 0 WIRING DIAGRAMS ...

Страница 35: ...AT100 0200 1 Rev L 10 2010 DCN0528 35 8 5 Temperature Simulation Wiring Diagram 8 0 WIRING DIAGRAMS ...

Страница 36: ...AT100 0200 1 Rev L 10 2010 DCN0528 36 9 0 F1 OPTION ASSEMBLY DRAWING ...

Страница 37: ...AT100 0200 1 Rev L 10 2010 DCN0528 37 10 0 SIL Certificate ...

Страница 38: ...AT100 0200 1 Rev L 10 2010 DCN0528 38 10 0 SIL Certificate continued ...

Страница 39: ...AT100 0200 1 Rev L 10 2010 DCN0528 39 11 0 EU DECLARATION OF CONFORMITY ...

Страница 40: ...her alterations misuse abuse improper or inadequate adjustments applications or servicing of the product K TEK s warranty does not include onsite repair or services Field service rates can be supplied on request If a product is believed to be defective the original purchaser shall notify K TEK and request a Returned Material Authorization before returning the material to K TEK with transportation ...

Страница 41: ...AT100 0200 1 Rev L 10 2010 DCN0528 41 ...

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