K-Tec MT2000 manual Bench Calibration of the 4mA & 20mA Points

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4.5.5Bench Calibration of the 4mA & 20mA Points:

After the transmitter is configured correctly, a manual bench calibration of the 4mA and 20mA points using hands or targets, can be done as follows.

Note: The following applies to single or dual Rod and Cable probes only. Other assemblies such as coaxial probes must be calibrated with products.

If the probe is a rod, position it so that it stands clear of any objects (minimum of 6 in. / 152 mm). For support use only very low dielectric materials (such as Styrofoam blocks). If the probe is a cable hang the cable vertically in open space or place it under tension between the coupler and cable end. An open palm of the hand or a metal plate can be used as a target if placed perpendicular to the probe. Use the front of the hand as the measuring surface, and place rod between two middle fingers. A suitable metal target can be a 6 in. / 152 mm diameter plate with a slot or hole in the center, to slide over the sensing rod. This method will simulate high dielectric product such as water.

•Setting the 4mA point:

•Enter the calibration mode by pressing the UP & DOWN buttons together for 3 seconds.

•Place hand or target at 0% level and press the DOWN button for 1 second to set the output at 4.00mA.

•Setting the 20mA point:

•Enter the calibration mode by pressing the UP & DOWN buttons together for 3 seconds.

•Place hand or target at 100% level and 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. The easiest way to set the 4 mA and 20 mA points is through the CAL menu as described in Section 4.3.

4.5.64mA & 20mA Calibration Using Actual Level Input:

A manual calibration of the 4mA and 20mA points using the actual vessel level can be done as follows:

•Setting the 4mA point:

•Enter the calibration mode by pressing the

•Establish a tank level of 0% and press the

UP & DOWN buttons together for 3 seconds.

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

•Setting the 20mA point:

•Enter the calibration mode by pressing the UP & DOWN buttons together for 3 seconds.

•Establish a tank level of 100% and press the UP button for 1 second to set the output at 20.00mA.

Notes: The above steps can be repeated as many times as required.

•Should CALIBRATE be entered inadvertently, pressing SELECT will exit this function, making no changes to LRV or URV.

MT2000-0200-1 Rev f (10-2007) DCN0160

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Contents Guided Wave Radar Level Transmitter Table of Contents Appendices List of FiguresIntroduction Overview Ambient TemperatureStorage Information Measurement cycle consists of the followingUltra Low Dielectric ULD Measure Method Direct Reflect Mode standard cont’dMounting Requirements InstallationShortening of Probe Factory Default ConfigurationMT2000 Guided Wave Radar Guidelines URV = Probe Length LRV = 0 in. / 0 mmQuickstart Procedure WiringCommissioning MT2000 Guided Wave Radar Guidelines cont’dSetting the 4mA and 20 mA Points Using the Pushbutton Menu Quickstart Procedure cont’dVerify Proper Power-Up Calibration Menu LCD Menu OperationThreshold Level Parameter THV and Gain Setting GS Detailed Configuration Parameters Direct Mode Blanking MenuL1O Threshold Level Parameter THV and Gain Setting GS cont’dAdvanced Parameter Settings KO & KG Advanced Parameter Settings cont’dDC = I + H L / H2 Ultra Low Dielectric ULD Mode Configuration= H * Sqrt DC H + L Advanced Output Configuration Ultra Low Dielectric ULD Mode Configuration cont’dSetting the DAC trim DAC TrimFigureBench Calibration of the 4mA & 20mA Points 6 4mA & 20mA Calibration Using Actual Level InputJumper Switch Settings Reversing The Output Action Using Actual Level InputValid Current Loop Outputs Troubleshooting InformationPossible Symptoms Electronics Module Replacement Possible Symptoms cont’dHoneywell DE Output Option Interoperability and Conformance ClassOperating Modes Hart Protocol Interface OptionHart Communicator CompatibilityLRV Glossary of TermsAppendix a Sensor Trim AppendicesEND CFG Menu Configuration 2 Hidden MenuTMP Setting up Linearization Table Points To access the linearization tableAppendix C Linearization To clear the linearization tableMT2000 Interface Appendix D Interface ApplicationsScope Settings Channel a Use and setup of the oscilloscope for the MT2000Prerequisites Channel BAppendix F CE Certificate of Conformity Appendix G Exida Certificate MT2000-0200-1 Rev f 10-2007 DCN0160 MT2000-0200-01 Rev f 10-2007 DCN0160 MT2000-0200-1 Rev f 10-2007 DCN0160 3a, 3b Appendix I Mounting Configurations10a 10bYear Warranty for Appendix J Warranty Statement
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