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 Output Specification
Measured Variable Product level & interface level
Output Signal / Protocol 4 to 20 mA with HART®, 1 or 2 Loop
Order Lengths Flexible 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-Linearity 0.02% F.S. or 0.794mm (1/32 in)**
Repeatability 0.01% F.S. or 0.381mm (0.015 in)**

(any direction)

*Contact QTS for longer lengths
**Whichever is greater

Output 4-20mA HART®
Linearity 0.02% F.S.
Measuring Range Rigid Pipe: 20-300 Inches Flexible Hose: 120-480 inches
Approval ATEX, CSA, FM


Parameters Specification
Enclosure Rating NEMA Type 4X
Humidity 0 to 100% relative humidity, non-condensing
Operating Temperature Electronics:

-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 Pressure Industrial Rigid Pipe: 1000 psi (69 bar)

Sanitary Pipe: 435 psi (30 bar)

Teflon Pipe: 100 psi (7 bar)

Flexible Hose: 260 psi (18 bar)

Materials Wetted Parts: 316L stainless steel

Non-wetted Parts: 316L stainless steel

Epoxy coated aluminum

* Contact QTS for alternative material


Input Voltage 10.5 to 36 VDC, 28 VDC Max. for I.S. Approval
Fail Safe High (21.4mA) or Low (3.8 mA)
Reverse Polarity Protection Series diode
Light/Transient Protection Stage 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


Connections 2-wire shielded cable or twisted pair, Daniel Woodhead 6-pin male connector, 4570 mm (180 in) integral cable with pigtail


Zero Adjust Range Anywhere within active length
Span Adjust Range Full Scale to 152 mm (6in.) from zero


Rigid Pipe ¾” in. adjustable MNPT fitting Flange or Ti-Clamp® Mount
Flexible Hose 1” in. adjustable MNPT fitting Flange Mount

Electrical Connections

Single & Dual Cavity ¾” in. FNPT conduit opening
NEMA Type 4X ½” in. FNPT conduit opening


Measured Variables Product level, interface
Variables Level and temperature
Size 13 mm (0.5 in)
Number of Digits 16

Compatible Products


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