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Troubleshooting

Section 4: Troubleshooting

4.1

Symptom Chart

4.2

Internal Diagnostics

(All diagnostic values with tolerances ±0.02 mA)

4.2.1

During Normal Operation:

1. Absence of Magnet Signal, Wire Break, or float outside active

range is Indicated as 3.8 mA

2. Selected Span beyond 4 mA Set Point is indicated as

3.9 mA

3. Selected Span beyond 20 mA Set Point is indicated as

20.1 mA

4.2.2

"Lost Float" Diagnostic:

When Float gets stuck beyond span or active ranges, or end

cap falls off and float slips away from probe, then outputs will

indicate as shown to the right.

Figure 4-1

Built-in Diagnostics

Locate Float Position

Symptom

Troubleshooting Tip

No Signal Received at controller

• Check that power is applied to controller
• Check wiring connection to probe
• Check process temperature [cannot exceed 230ºF (110ºC)]

Output is Under 4mA

• Be sure float is in place and not stuck.
• Be sure float retention clip is in place at base of probe
• Check automatic gain control (if output is 3.8mA)

Output appears erratic

• Be sure probe is mounted perpendicular with gravity
• Check float for free movement along probe
• Check automatic gain control

Output appears to be going
down, yet tank is filling

• Check configuration of 4mA & 20mA points

Output appears to be going up,
yet tank is emptying

• Check configuration of 4mA & 20mA points

Selected Span

Activ

e Region

20.1mA

Selected Span

Activ

e Region

3.9mA

Selected Span

Activ

e Region

3.8mA

Selected Span

Activ

e Region

3.8mA

Содержание DM330 Series

Страница 1: ...America 1 215 674 1234 Installation and Operating Instructions DM330 Series Magnetostrictive Level System U S and Canada 1 800 553 9092 24 Hour Service 1 800 527 6297 International 1 215 674 1234 Fax 1 215 674 2731 E mail drexelbrook service ametek com Website www drexelbrook com ...

Страница 2: ...in this manual including but not limited to implied warranties or fitness for a particular purpose Drexelbrook shall not be liable for errors contained herein or for incidental or consequential damages in connection with the performance or use of material Copyright 2007 AMETEK Drexelbrook ...

Страница 3: ... DM33X LM Issue 8 205 Keith Valley Road Horsham PA 19044 U S and Canada 1 800 553 9092 24 Hour Service 1 800 527 6297 International 1 215 674 1234 Fax 1 215 674 2731 E mail drexelbrook info ametek com Website www drexelbrook com An ISO 9001 Certified Company ...

Страница 4: ......

Страница 5: ...Mounting Considerations 11 2 4 Stainless Steel Probe Mounting 11 2 5 Flexible Polyvinylidene Fluoride PVDF Probe Mounting 14 2 6 Mounting Optional Housing 19 2 7 Wiring 20 2 8 Loop Configuration of 4mA 20mA Control Points 23 2 9 Correlating Level 25 Section 3 Operation 27 Section 4 Troubleshooting 29 4 1 Symptom Chart 29 4 2 Internal Diagnostics 29 4 3 Automatic Gain Control AGC 30 4 4 Factory Ass...

Страница 6: ...Section 1 ...

Страница 7: ... space available above a tank making it impossible to install a rigid probe without damaging the probe Chemical Compatibility When an application is not compatible with 316 SS then PVDF may be a good alternative Large Tanks Since the 316 SS probe maximum length is 24 feet PVDF can be substituted for larger tanks PVDF probes are available in lengths up to 40 feet Consult factory for longer lengths ...

Страница 8: ...ly magnetostrictive sensors have very high resolution and repeatability Magnetostrictive technology is excellent as well for applications where the dielectric constant is very low or is changing The technology has been used quite successfully for the detection of leaks in underground storage tanks for example The measurement of a 0 1 gallon leak out of a 10 000 gallon tank over a period of one hou...

Страница 9: ...ignal Output Float 1 Type XXX See Float in Chart below Housing option H Condulet with Zero Span push buttons Special Mounting Y Explosion proof Class I Div 1 FM CSA Z Flame proof for Zone 1 ATEX pending XX None CF Adjustable Compression Fitting 5 8 tube fitting to 3 4 NPT Float Kits Float Type selection includes Float spacer and retaining clip Material Shape Diameter Hight S G Max Press PU0 Ureth ...

Страница 10: ...emp range T TriClamp with E clip retainer P Triclamp with CIP perm end plug float non removable W Welded Flange Fitting X None Mounting Size 20 2 Tri clamp 25 2 1 2 Tri clamp 30 3 Tri clamp 40 4 Tri clamp CF Adjustable Compression Fitting XX None X Weight Kit Material Shape Diameter Hight 0 None No weight kit on Stainless Steel probes X S F or H 1 316SS Round 2 5 For PVDF Probe up to 144 long 2 31...

Страница 11: ...0 50 8 8 00 203 2 NULL ZONE See Specifications for PVDF INCHES MM 1 83 46 0 625 16 1 00 25 SPAN OVERALL LENGTH DEAD BAND 8 00 203 NULL ZONE 1 75 44 2 00 51 POLISHED AREA FLOAT TRI CLAMP FITTING 2 00 51 7 8 16 UNS 2A 3 20 81 2 94 75 FIXED END All dimensions in inches mm 2 05 52 Maximum Diameter 70 18 I D 1 35 34 2 69 68 Denotes magnet location within float Float Spacer keeps float in active area of...

Страница 12: ...Section 2 ...

Страница 13: ... 1 215 674 1234 2 1 1 Storage DM330 systems should be stored in their original shipping containers until ready for installation Special Caution DM330V Flexible PVDF systems are shipped in a wooden crate approx 4 x 4 approx 1m x 1m The shipping crate protects the PVDF tubing from bending or damage After inspection this crate should be stored lying flat until ready for installation Do not remove the...

Страница 14: ...tubing may bend and become damaged under is own weight Damage that occurs in storage is not covered under manufacturers system warranty 2 1 1 Storage Continued Please see section 2 5 3 for additional handling instructions SYSTEM DAMAGE DUE TO BENDING Note Numbered supporting tie wrap fasteners have also been removed ...

Страница 15: ...tory and have electronic circuits inside Do not attempt to open probe or weld the tube DM330 Series level system is designed for industrial applications but should be mounted in a location as free as possible from vibration corrosive atmospheres or any possibility of mechanical damage Place the level gauge in a reasonably accessible location Ambient temperature should be between 20 F and 158 F 4 C...

Страница 16: ...raction prior to tightening tube coupling Clearance Variable See Chart B 7 8 16 UNS 2A Mini connector on 316SS version 3 4 NPT 3 4 NPT 5 8 Flexible PVDF Tubing Probe Type A B Span Range 316SS 8 in 2 in 6 to 278 in 203 51 152 to 7061 With Compression Fitting Span Range 6 to 272 in 152 to 6908 PVDF 12 in Variable 48 to 480 in 305 See Chart 1220 to 12192 inches mm Required PVDF Bottom Clearance Probe...

Страница 17: ...ary considerably The requirements for mounting these probes are fairly simple Since the sensor requires a float to provide level position there is a minimum size required for insertion of the float into the tank It is recommended that a minimum of 2 diameter be used for the most reliable system The size and material of the float being used will have a slight impact on the overall accuracy of the m...

Страница 18: ...is style probe if practical Most of the SS Probes are mounted with probe end resting on bottom of the tank for non pressurized tanks or about 12 7mm from bottom for pressurized tanks and held in position with compression fitting at top of tank A 5 8 x adjustable fitting is used to mount probe to a flange or adapter Minimum process connection depends on the diameter of float but it is suggested to ...

Страница 19: ...ssembly of probe one to hold the probe and the other to assemble components 3 Slide compression fitting if it is being used on probe 4 Slide reducing bushing or flange on to probe 5 Slide float onto probe Magnet is located in middle of the float so orientation of float does not make any difference 6 Slide spacer onto probe 7 Capture all of these parts with E Clip or ECTFE foot At this point if pro...

Страница 20: ...g or flange 4 Hand tighten To insure compression fitting is sealed turn fitting 1 turns after hand tightening 5 Make final check to see that all of bolts and screws are in proper position and probe is securely tightened 2 5 Flexible Polyvinylidene Fluoride PVDF Probe Mounting 6 12 Active Span Overall Length 1 4 Deadband Null Zone Clearance Figure 2 4 PVDF Probe up to 480 12 2 m Figure 2 5 PVDF Pro...

Страница 21: ...e used to prevent float from entering the deadband at the end of the probe C version PVDF probes are for limited temperature ranges of 4 F to 120 F 20 C to 49 C They come with a spacer and upper level float collar They have a 3 76mm deadband at the bottom of the probe because of less need for expansion room at those temperatures The Null Zone on the C version is 9 PVDF Probes Requiring a Weight Ki...

Страница 22: ...t 4 88m in length are relatively rigid and shipped in the same way as 316 SS probes PVDF probes longer than 16 feet are coiled and shipped in a box Longer probes must be handled carefully to avoid damaging the electronics mounted within the tube A Nylon Compression fitting and PVC reducer bushing are available for use with the PVDF probe Expansion space required Spacer length varies from 5 to 13 a...

Страница 23: ...ide of the tank take extra precaution to avoid damaging the flexible probe Note that the longer probes are coiled and have numbered tie wraps If you uncoil the probe outside of the tank to set the zero and span it is important to recoil the probe before installation The probe coil should be approximately 48 inches in diameter and the coils should always remain parallel with each other If you lift ...

Страница 24: ...to tank or flange Bolt flange into position 3 Thread compression fitting into bushing or flange 4 Hand tighten To insure compression fitting is sealed turn the fitting 1 turns after hand tightening Do not over tighten compression fitting if it is being used 5 Make final check to see that all of the bolts and screws are in proper position and probe is securely tightened A second person is recommend...

Страница 25: ...e 2 10 Housing Junction Box Figure 2 9 Mounting Optional Housing Junction Box on Right Angle Connector Version DM330 R Option 3 4 NPT Adjustable Tube Coupling Optional Flange Reducing Bushing Junction Box typical Conduit to Controller Power Supply Probe ...

Страница 26: ...re the programming wire is properly protected through a Safety Barrier See the wiring instructions and Installation Drawing 420 0004 233 CD for the proper connections ZERO SPAN PROGRAMMING BUTTONS LOOP LOOP EARTH GROUND SHIELD GREEN BLACK RED WHITE From Sensor Through Center Hub on Housing Bottom Not Shown Wiring Colors Signal US EU IN RED BROWN IN BLACK BLACK PROGRAM WHITE BLUE CHASSIS GREEN WHIT...

Страница 27: ...ding wire meter or controller and barrier should not exceed 500 ohms Voltage output of the I S power supply should be at least 13 5 V at sensor after considering voltage drops across all other resistance in loop I S power supply voltage should not exceed Vmax of barrier 2 7 Wiring Continued Red Loop Loop White Program Shield Earth Ground Black Loop Loop Safety Barrier Hazardous Area Group IIA IIB ...

Страница 28: ...e end of loop and meter has a differential input Refer to Figure 2 16 If the meter resistive load must have one side connected to ground then a dual channel barrier must be used Refer to Figure 2 17 Figure 2 15 Dual Channel Barrier Figure 2 14 Single Channel Barrier DM330 DM330 2 7 3 Intrinsically Safe Power Supply The I S power supply should have at least a 24 VDC output and no more than 1000 fee...

Страница 29: ... Unlock the configuration program by momentarily Shorting the White Program Wire Blue in EU to the Black Loop Wire Based on the security timing sequence in Section 2 8 3 4 The 4mA control point is set by momentarily Shorting the White Program Wire Blue in EU to the Black Loop Wire Based on the security timing sequence in Section 2 8 3 5 The 20mA control point is set by momentarily Shorting the Whi...

Страница 30: ...on program by Shorting the White Program Wire Blue in EU to the Black Loop Wire for three 3 seconds See figure 2 18 for full timing sequence 4 Release the Short for three 3 seconds 5 Set Zero or Span by Shorting either the 4mA Black Loop Wire Blue in EU or by Shorting the 20mA Red Loop Wire Brown in EU to the White Program Wire for two 2 seconds 6 The DM330 Series Locks the programming menu after ...

Страница 31: ...as been installed the output may not be accurate The actual level and the position of the probe in the tank need to be correlated You might need to adjust the span to be consistent with the actual tank conditions if the span was set outside of the tank Other than an adjustment to a reference value there is no other calibration required Figure 2 18 Security Timing Sequence 2 8 4 Optional Housing wi...

Страница 32: ...Section 3 ...

Страница 33: ... wire that is pulsed with a current that travels down the wire As the current pulse intersects the magnetic field of the float a reflection creates torsion on the wire that is sensed by electronic module providing a linear 4 20 mA output The instrument needs only to be installed and fixed in position There are no adjustments or calibration The sensor is a fixed length Scaling or offset is done in ...

Страница 34: ...Section 4 ...

Страница 35: ...ymptom Troubleshooting Tip No Signal Received at controller Check that power is applied to controller Check wiring connection to probe Check process temperature cannot exceed 230ºF 110ºC Output is Under 4mA Be sure float is in place and not stuck Be sure float retention clip is in place at base of probe Check automatic gain control if output is 3 8mA Output appears erratic Be sure probe is mounted...

Страница 36: ...or to 3 8 mA if AGC failed 4 Remove power from the system and remove the short White wire to black wire 5 Re apply power and the system will return to normal operating mode 4 20mA with new gain set 6 If the system does not pass the AGC test or return to normal operation after completion of the above steps contact the factory 4 3 2 AGC test via Optional Housing Push buttons 1 Place float magnet nea...

Страница 37: ...h Original Purchase Order Number Material being measured Temperature Pressure Agitation Brief description of the problem Checkout procedures that have failed 4 5 Field Service Trained field servicemen are available on a time plus expense basis to assist in start ups diagnosing difficult application problems or in plant training of personnel Contact the service department for further details 4 6 Cu...

Страница 38: ...disclose all chemicals and decontaminate the sensing element To obtain a return authorization RA contact the Service department at 1 800 527 6297 US and Canada or 215 674 1234 International Please provide the following information Model Number of Return Equipment Serial Number Original Purchase Order Number Process Materials to which the equipment has been exposed MSDS sheets for any hazardous mat...

Страница 39: ... D Repeatability 0 014 0 05 of Span Typical 0 014 0 4 of Span Max Accuracy 0 1 or 0 050 1 27mm whichever is greater Resp Update Time 100 ms Loop Resistance Vs 13 5V 0 0201A Ohms 522 Ohms Typical 24VDC Null Zone Stainless Steel 8 M D S 9 R PVDF flexible 12 D 9 C Dead Band Stainless Steel 2 all models PVDF flexible 3 C 6 to14 D dependant on overall length OAL Useable Span All Models OAL Null Zone De...

Страница 40: ...Section 6 ...

Страница 41: ... C D T4 Class I Zone 0 AEx ia IIB T4 Install Per 420 0004 233 CD 6 1 Approvals Available 74 02 ATEX EEx ia IIB T4 NEMKO 04 ATEX 1469X 0344 II 1G Sanitary Specifications are subject to change without notice ExplosionProof Class I DIV 1 Groups A B C D T4 Class II DIV 1 Groups E F G T4 Class III DIV 1 T4 40 C Tamb 70 C Install Per 420 0004 342 CD ...

Страница 42: ...DM330 Series Magnetostrictive Level System User s Manual 36 6 2 EC Declaration of Conformity ...

Страница 43: ...Control Drawings 37 Section 7 Control Drawings ...

Страница 44: ...DM330 Series Magnetostrictive Level System User s Manual 38 Section 7 Control Drawings Continued ...

Страница 45: ......

Страница 46: ... not transfer any intellectual property rights to Buyer unless Seller specifically agrees to do so in writing Seller shall retain ownership of all applicable patents trademarks copyrights and other intellectual property rights Buyer shall not use copy or transfer any such items in violation of Seller s intellectual property rights or applicable law or for any purposes other than that for which the...

Страница 47: ......

Страница 48: ...ad Horsham PA 19044 U S and Canada 1 800 553 9092 24 Hour Service 1 800 527 6297 International 1 215 674 1234 Fax 1 215 674 2731 E mail drexelbrook info ametek com Website www drexelbrook com An ISO 9001 Certified Company ...

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