1. Rep Training 2015 Ben Coutee
Magnetic Level Gage
Rep Training 2015
Ben Coutee

2. Topics Capabilities Overview Product Offering
Bridle and magnetic level gage standards
Magneostrictive vs. GWR
Testing (NDE)
Applications
Questions?

3. Product capability
A complete line of MLI, bridle and instrument solutions
Design, engineering, and integration for all systems
Piping, welding and instrumentation expertise
Top tier support for product
The magnetic level gage is an engineered solution!

4. Product offering

5. Product Offering Replacement of sight glass
8 basic styles with customized options
Sold as an engineered product
Best lead times in industry
Low maintenance option for end users
Highly visible (200 ft)
Customizable options
Magnetic Level Gage

6. Product Offering
Send a signal back to the control room indicating level (Continuous)
Current pulse from transmitter start pulse
Interaction of pulse and magnetic field causes a torsional wave return pulse
Time between start pulse and return pulse is proportional to position of float
MLI + Magneostrictive Transmitter

7. Product Offering Continuous level measurement back to control room
Used as separate instrument from MLI
Higher temp/pressure capabilities
Dual Chamber design
GUIDED WAVE RADAR is based upon the principle of TDR (Time Domain Reflectometry). Pulses of electromagnetic energy are transmitted down a probe. The pulse is reflected when it reaches a liquid surface.
MLI + Guided Wave Radar

8. Product Offering Level Switches
Quest-Tec level switches are hermetically sealed, non-mercury, bi-stable latching switches designed for use with Magne-Trac level gages. The bias magnet design latches the switch maintaining the contact after the level continues to rise or fall. The switch will change
state when the float magnet passes by. The switches are fully adjustable and non-invasive. Level switches are mounted to the Magne-Trac chamber with all 316 Stainless Steel worm gear pipe clamps. Switch points can be changed easily at any time without any interruption to the visual indication or process.
Available in 1, 5 & 10 AMP
Level Switches

9. Product Offering Insulation (HB) Cryogenic Insulation (CI)
Steam Trace (ST)
Electrical heat trace (EH)
Freeze Protection (FP)
Isolation valves (IS)
Vent/drain valves (VD)

10. 4 Key Factors in Quoting!! Specific gravity / Process fluid
Maximum/Operating Pressure
Maximum/Operating Temperature
Center to Center Dimension

11. Specific Gravity/Process fluid
Why both?
Essential pieces of information that feed into the overall design of the gage.
Will directly affect the float design, chamber size and dimensions of “dead” zone.
Specific gravity vs. chamber design

12. Pressure / Temperature Considerations
Having a direct affect on the specific gravity of a process fluid, knowing the operating pressure and temperature is essential to overall design.
Pressure can change sizing of the chamber during specification
Temperature can be limiting on the type of technology available and needs to be taken into consideration in all applications (cold or hot)
Flag material will change in high temp scenario
Look for process media that solidifies at certain temperature and offer heat tracing options or freeze protection

13. Float Design (Oblong)
Oblong available in 316, titanium, CPVC, hastelloy C and carbon fiber
316 SST floats are .020” wall thickness and used in applications up to 400 PSI
SG range is .60 and up
360 DEG ring magnet
Most common used float
Can easily be replaced (within a few hours)

14. Float Design (Spherical)
Titanium material
Designed to handle up to PSI
Will directly affect sizing of the chamber
May be necessary under .60 depending on pressure/temperature
Will affect the overall length of the gage (be mindful of sizing limitations)

15. Chamber Design Standard chamber is 2” SCH 40
Available options: 2” SCH 40, 2.5” SCH 80, 3” SCH 40 & 3” SCH 80
QTS does not do any SCH 10 (is this a limiting factor?)
Material options: 304 SST, 316SST, Hastelloy C, CPVC, Monel and PVDF (Kynar)
Material combinations?
Full bore process connections available (no pulled extrusions)
Vent / Drain connection types

16. Flange class process connections

17. Process Connections
SW - Socket Weld RF – Raise Faced Flanges RJ/RTJ – Ring Type Joint (Gasket) WN – Weld Neck SO – Slip-On LJ – Lap Joint (not common)

18. Branch Connection Reinforcement

19. Vent / Drain All MLI’s require a flanged end to install the float.
Drain Plugs: ½”, ¾” or 1” NPT / SW 316 SS (or like material)
Vent Plugs – ½”, ¾” or 1” NPT 316 SS

20. Wide Flag Indicator High Temp Molded Nylon Flags
Non-Corrosive / Low Friction
Molded in Color, UV Resistant
Black=Vapor, Yellow=Liquid
1.4’’ design provides greater visibility and magnetic field attachment
Heavy anodized aluminum housing (Stainless steel housing available)
Sealed with 4 “O”-Ring beads
Polycarbonate shield: Glass option available
316 SS photo etched scale option (inches, MM, %....available)
Note indicator viewing position

21. 3 Main Parts
Chamber
Indicator
Float

22. Magneostrictive transmitter
Use as a SYSTEM
4-20 mA loop powered transmitter
HART communications
Explosion proof (all classes available)
Optional Digital display
Lengths from 20” to 25’-”dead leg”
Temperatures to 257º
Excellent redundancy device
Easily attaches to the exterior of Magne-Trac
Set it and forget it—rarely needs calibration or maintenance

23. Guided Wave Radar

24. Guided Wave Radar
Separate Chambers allow for unimpeded float travel- “dead leg”
GWR not influenced by process conditions- true level measurement
High temperature applications: pressure and temperature has little effect if any
Temperatures to 750º
Pressures to 5800 psi
HART, PROFIBUS, and FOUNDATION fieldbus available
Can be used in conjunction with Magneostrictive transmitters

25. Welding and documentation standards
Follows ASME B31.1 manufacturing codes
Certified Welders and Welding Certificates
ISO 9002:1000 Certified
WPS – Weld Procedure Specification
Material Specific Procedures
PQR – Procedure Qualification Records
Material Specific Records
Hydro Testing Records
Chamber Tested at 1.5x Maximum Operating Pressures
Float Tested at 1.25x Maximum Operating Pressures
NACE Certifications
Primarily concerned with H2S Service
MR0175

26. Testing PT/LP – Liquid (Dye) Penetration Inspection
Done in-house at QTS
Level II inspectors on staff
VT – Visual Inspection
MT – Magnetic Particle Inspection
Material needs to be magnetic
3rd Party independent lab
RT – X-Ray/Radiographic Inspection
UT – Ultrasonic Inspection
LT – Air or Water Pressure Testing
DT – Destructive Testing

27. Not so common applications
HF Acid in refineries
Sour Crude Oil tanks
Gas / Liquid separators
Oil seal reservoirs
Sodium Hypochlorite tanks
Caustic Soda
Acid Storage tanks
Boiler feed water
Compressor oil sump level

28. Field Considerations Dirty service
How does dirty service affect a magnetic gage and its field use
How do we combat the issues associated with dirty service?

29. Field Considerations Flashing
Oversized chamber principle much like what's offered in dirty service
Guide rods
Insulation?

30. Field Considerations Interface applications
There are many applications where the interface between two immiscible liquids must be monitored or controlled. These involve oil and water separators, wastewater disposal tanks and a multitude of chemical processes
Mags can be used with a specially weighted float that will sink in the top layer and float in the bottom layer provided there is a specific gravity difference of 0.1 between liquids

31. Field Considerations Boiler Drum level
If the plant is adhering to PG60 special consideration needs to be taken in magnetic gage specification
A magnetic gage can only be used up to 900 PSI
A magnetic gage falls under “remote level indication” not direct reading sight glass
Great chance to use multiple “remote level indicators” off one set of taps

32. Kynar Level Gages
Frequently a level gage application requires the wetted parts to be hastelloy, zirconium, titanium or other exotic material because of a highly corrosive nature. As a cost savings we can offer gages made from solid Kynar. The material is similar to Teflon but is less porous. It is limited by a temperature of 280 DEG F.
It is only about 25-30% more than stainless but about half the price of a hastelloy gage

33. Gages in the Food Industry
QTS has a gage that can be “3A” approved for use in the dairy industry. Anyone in the food industry generally recognizes this approval and the “3A” symbol. Whether it is brine, vinegar, beer, vegetable oil or mile products they want to have a sanitary version of the MLI.

34. Pump up / Pump down
Various types of process tanks frequently need some type of automatic level control. Receiver vessels need to be pumped to storage when they become full (pump down) and feed tanks need to be refilled when they become low (pump up)
The QTS 3 or 5 AMP reed switch can be used in conjunction with a latching relay controller for pump up and pump down operation

35. Magne-Trac Specification & Model Code Guide:

36. QUEST-TEC SOLUTIONS
MAGNE-TRAC
SPECIFICATION

37. QUEST-TEC SOLUTIONS
MAGNE-TRAC
SPECIFICATION

38. QUEST-TEC SOLUTIONS
MAGNE-TRAC
SPECIFICATION

39. QUEST-TEC SOLUTIONS
MAGNE-TRAC
APPROVAL DRAWINGS

40. Questions?