User Manual

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KENCO ENGINEERING COMPANY

P.O. BOX 470426 TULSA, OK 74147-0426 ● PHONE: (918) 663-4406 FAX: (918) 663-4480

www.kenco-eng.com e-mail: info@kenco-eng.com

SERIES KMD MAGNETOSTRICTIVE LIQUID LEVEL TRANSMITTER

INSTALLATION / OPERATION INSTRUCTIONS

TABLE OF CONTENTS

1. GENERAL DESCRIPTION ............................................................. 2

2. PRINCIPLE OF OPERATION ......................................................... 2

3. MODEL DESCRIPTION .................................................................. 2

4. INSTALLATION .............................................................................. 3

5. OPERATIONAL CHECK................................................................. 3

6. THREADED FLANGE MOUNTING ................................................ 3

7. WELDED FLANGE MOUNTING..................................................... 4

8. MAGNETIC GAUGE MOUNTING................................................... 5

9. WIRING ........................................................................................... 5

10. INSTALLATION (CONTROL) DRAWING....................................... 6

11. PRODUCT DIMENSIONS ............................................................... 7

12. CONDUIT INSTALLATION............................................................. 8

13. WIRING CONNECTIONS................................................................ 8

14. CALIBRATION................................................................................ 9

15. SETUP USING ONBOARD KEYPAD AND DISPLAY.................... 9

16. SETUP USING HART COMMUNICATIONS................................... 11

17. SETUP USING PC SETUP SOFTWARE........................................ 12

18. SPECIFICATIONS .......................................................................... 17

Summary of content (17 pages)

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KENCO ENGINEERING COMPANY P.O. BOX 470426 TULSA, OK 74147-0426 ● PHONE: (918) 663-4406 FAX: (918) 663-4480 www.kenco-eng.com e-mail: info@kenco-eng.com SERIES KMD MAGNETOSTRICTIVE LIQUID LEVEL TRANSMITTER INSTALLATION / OPERATION INSTRUCTIONS TABLE OF CONTENTS 1. GENERAL DESCRIPTION ............................................................. 2 2. PRINCIPLE OF OPERATION ......................................................... 2 3. MODEL DESCRIPTION .....................................................
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GENERAL DESCRIPTION The KMD Series Magnetostrictive Liquid Level Transmitters are designed for very high accuracy measurement of virtually any liquid. The KMD can be used as a stand-alone transmitter to measure level and/or interface in a vessel, or can be combined with the Kenco Series MLG Magnetic Gauge to provide a 4-20mA signal along with visual indication.
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INSTALLATION Unpack the switch carefully. Inspect all units for damage. Report any damage to carrier immediately. Check the contents against the packing slip and purchase order. Kenco’s Magnetostrictive Liquid Level Transmitters are manufactured to the highest quality standards. These instruments use electronic components that can be damaged by static electricity. Make sure that you are properly grounded before starting installation.
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NPT Fitting Tank Flange (provided by customer or ordered separately) Riser Float Access Port Sensor Assembly Retaining Hardware Tip of Sensor For threaded process connections, screw sensor into the opening using a wrench on the NPT Fitting (bottom half for swaged fittings). Do not overtighten the upper nut on swaged fittings. Use thread tape or suitable pipe compound on the process connection threads. If flanged, bolt the sensor flange to the mating flange with the proper gasket.
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Complete the following steps to mount the sensor using the welded flange method: 1. Remove the Retaining Hardware. Install the float(s) onto the sensor. Remount the retaining hardware. 2. Insert the sensor into the vessel. 3. Attach the Sensor Flange to the Vessel Flange. Magnetic Level Gauge (MLG) Mounting The transmitter can also be used in conjunction with a Magnetic Level Gauge (MLG) to provide a 4-20mA output, as well as visual indication of the level in the vessel.
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Installation Drawing – Series KMD Transmitter Page 6
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Product Dimensions 5 in. (127mm) 4.84 in. (123mm) 5 in. (127mm) ¾” NPT Conduit Connection 8.25 in. (210mm) 8.25 in. (210mm) Optional Display Single-cavity Enclosure 5 in. (127mm) 3.48 in. (88mm) 5 in. (127mm) Optional Display ¾” NPT Conduit Connection Dual-cavity Enclosure Order Length – NOTE: 20” Minimum Zero/Span Setting Distance 4mA Setting 11.75” (Ref.) 3” Min. (Ref) 8” (Ref.) 20mA Setting 3.75” Min. (Ref) 3” Min.
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Conduit Installation Explosion-proof Conduit Seal Fitting ¾” NPT Access Conduit (Flex / Rigid) Conduit from Control Room NPT Fitting DO NOT Overtighten Wiring Connections Before starting installation procedures in hazardous areas, insure that all power sources have been turned off and locked out. “Live” electrical circuits can ignite flammable gasses and dusts. Do not apply more than 36Vdc to the transmitter, as this may damage the instrument. Electronics Assembly (Puck) Instrument Enclosure 1.
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4. Pull the power/signal wires through the conduit opening. 5. Connect the (+) and (-) wires to the plug. In the photo, the (+) connection is on the side facing the sensor connection. 6. If this transmitter has (2) loops (interface or temperature measurement), repeat steps 3-5 for Loop #2. If the front of the electronics “puck” does not have “Loop 2 Test” connections, do not connect any wires to the Loop #2 connector shown in the above photo. 7. Reinsert the electronics module.
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Operation Modes Run Mode -This is the primary mode of operation. It performs measurements, displays data, and responds to HART commands. Program -Mode To enter this mode press any of the three keys (UP, DOWN, or ENTER). Menus will guide you through the process of setting the zero & span settings for the two loops, as well as setting the LCD contrast and performing an LCD test. When in the Program Mode, HART communication is not functional. There I also an automatic time out feature.
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Menu Structure Cal Lev 1 ? Cal Lev 2 ? Set Zero ? Shows existing level Accept ? Enter the Low Level Point for Loop #1 Set Span ? Shows existing level Accept ? Enter the High Level point for Loop #1 Set Zero ? Shows existing level Accept ? Enter the Low Level / Temperature Point for Loop #2 Set Span ? Shows existing level Accept ? Enter the High Level / Temperature Point for Loop #2 Test LCD ? All LCD Segments turn on Press ENTER to test the Display Set LCD Cntrst ? Adjust Contrast 0-3
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1 2 3 4 5 Device setup >> *PV *AO *PV URV *PV LRV 1 Process Vars >> 1 2 3 4 5 View Measurements View PV-Analog 1 View SV-Analog 2 View TV View 4V 2 Diag/Service >> 1 Level Range Cal >> 1 Calibrate Level 1 2 Calibrate Level 2 3 Exit 2 Self Test 3 Basic setup >> 1 2 3 4 #Tag Eng unit Range Values Device Information >> 1 Model Data 2 Comm Parameters 3 #Sensr s/n 4 Final asmbly num 5 Descriptor 6 Message 7 # Date 5 #Damp 4 Detailed setup >> 1 Instrument Config >> LEGEND 2 3 4 5 6 7 8 9 * Dynamic
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Installing the Software 1. Insert the CD into the proper drive. 2. If you don’t have the CD, contact Kenco, and have a copy of the software e-mailed to you. 3. Run setup.exe 4. Follow the instructions on screen to install the program. Prepare for Calibration 1. Obtain a Linear Power Supply (24Vdc nominal), Multimeter, PC, and a HART Modem (RS-232 or USB). 2. Connect the Power Supply, Multimeter, and transmitter. Set the Multimeter to DC mA scale. Put a load resistor in the loop (250-500Ω). 3.
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Advanced Click the Advanced Setup Tab. Confirm that the Gradient, Length, and Head Adder have been received from the transmitter. If not, click the Read Button. The fields are defined as follows: Gradient -Units -- Is slightly different fro each sensor. This number can be found on the sensor element head. Determines the unit of measure for “Length” and “Head Adder”. See the section on “Output Tab” to change the unit of measure for all data.
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Calibration The Calibration Tab is used to set the Zero (LRV) and Span (URV) points for the Level Float (Level #1), Interface Float in a 2 float system (Level #2), and the Temperature sensor (if installed). To change a value, click the cell you want to change, type in the new value, and click Write. The Units field shows the unit of measure used for the Zero and Span points. To change, click the drop-down arrow, and select the desired unit of measure. Click “Write” when finished.
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Output The Output Tab shows you the present output values for the transmitter. To update the values, click the Read button under the black box. Output Mapping allows you to select the loop for each measurement. Loop #1 (or #2) can be set to indicate Level #1, Level #2 or Temperature. Click Write after you make any changes. Click Read to see the existing setting. Output Units allows you to set the units of measure for all data. Click the drop-down arrow and select the desired value.
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Specifications Description Power Supply Temperature Range (Electronics) Temperature Range (Sensor) Humidity Measurement Variables Level / Interface Output Temperature Output Onboard Operator Interface (Optional) Output Signal Error Indication Range Damping Maximum Signal Cable Length Range Linearity Repeatability Type Repeatability Accuracy Drift Zero Adjust Span Adjust Data Entry Display Analog Digital Specification 10.5 – 36.