Product Description

The MTLT-5000 is based upon the magnetostrictive principle. The sensing tube contains a wire which is pulsed at fixed time intervals. The interaction of the current pulse with the magnetic field created by the magnetic float causes a torsion stress wave to be induced in the wire. This torsion propagates along the wire at a known velocity, from the position of the magnetic float and toward both ends of the wire. A patented piezo-magnetic sensing element placed in the transmitter assembly converts the received mechanical torsion into an electrical return pulse. The microprocessor-based electronics measures the elapsed time between the start and return pulses and converts it into a 4-20 mA DC output which is proportional to the level being measured.

Product Features

  • Designed to mount externally to the Magne-Trac
  • No maintenance required
  • Multidrop HART Communications
  • FM Approved Explosion Proof/IS
  • NEMA 4X/7 enclosure
  • Modular design
  • Adjustable output damping
  • Up to .001” resolution
  • 2-wire loop powered
  • RFI/EMI protection
  • Offers a 4/20 mA 2-wire loop powered circuit for continuous level measurement
  • Available in lengths up to 300 inches
  • Process temperature range: -30 to 400 degrees F.
  • The Non-Contact design ensures no wear to the sensing element, thus requiring no maintenance or recalibration

Product Specifications

Level OutputSpecification
Measured VariableProduct level & interface level
Output Signal / Protocol4 to 20 mA with HART®, 1 or 2 Loop
Order LengthsFlexible Hose:


(ATEX Ex ia IIB, FM IS Group C, D):

3048 mm (120 in.) to 7620 mm (300 in.)*


(All Else):

3048mm (120 in.) to 12200mm (480 in.)*


Rigid Pipe:

508mm (20 in.) to 7620mm (300 in.)


Non-Linearity0.02% F.S. or 0.794mm (1/32 in)**
Repeatability0.01% F.S. or 0.381mm (0.015 in)**

(any direction)

*Contact QTS for longer lengths
**Whichever is greater

Output4-20mA HART®
Linearity0.02% F.S.
Measuring RangeRigid Pipe: 20-300 Inches Flexible Hose: 120-480 inches
ApprovalATEX, CSA, FM


Enclosure RatingNEMA Type 4X
Humidity0 to 100% relative humidity, non-condensing
Operating TemperatureElectronics:

-40°C (-40°F) to 71°C (160°F)

Sensing Element:

-40°C (-40°F) to 125°C (257°F)

Temperature Element:

-40°C (-40°F) to 105°C (221°F)

Vessel PressureIndustrial Rigid Pipe: 1000 psi (69 bar)

Sanitary Pipe: 435 psi (30 bar)

Teflon Pipe: 100 psi (7 bar)

Flexible Hose: 260 psi (18 bar)

MaterialsWetted Parts: 316L stainless steel

Non-wetted Parts: 316L stainless steel

Epoxy coated aluminum

* Contact QTS for alternative material


Input Voltage10.5 to 36 VDC, 28 VDC Max. for I.S. Approval
Fail SafeHigh (21.4mA) or Low (3.8 mA)
Reverse Polarity ProtectionSeries diode
Light/Transient ProtectionStage 1:

Line-to-ground surge suppression; IEC 61000-4-5


Stage 2:

Line-to-ground surge and line-to-ground transient suppressors, IEC 61000-4-4


Connections2-wire shielded cable or twisted pair, Daniel Woodhead 6-pin male connector, 4570 mm (180 in) integral cable with pigtail


Zero Adjust RangeAnywhere within active length
Span Adjust RangeFull Scale to 152 mm (6in.) from zero


Rigid Pipe¾” in. adjustable MNPT fitting Flange or Ti-Clamp® Mount
Flexible Hose1” in. adjustable MNPT fitting Flange Mount

Electrical Connections

Single & Dual Cavity¾” in. FNPT conduit opening
NEMA Type 4X½” in. FNPT conduit opening


Measured VariablesProduct level, interface
VariablesLevel and temperature
Size13 mm (0.5 in)
Number of Digits16

Compatible Products


400-01 MTLT-5000 Overview
Product Literature
410-06 Magnetostrictive Transmitter Model Code Breakdown
Data Sheet
430-04 MTS Magnetostrictive Transmitter IOM