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High accuracy non-intrusive liquid level and interface level detection
The LMT Series of level transmitters is a modular range of field mounted, advanced microprocessor-based electronic transmitters, utilizing multiple sensor technologies. Accurate and reliable measurement of liquid level and interface are provided in even the most difficult and hazardous industrial environments.
Overview
The LMT200 is based upon the magnetostrictive principle.
1. The device electronics generates a low energy current
pulse at fixed intervals.
2. The electrical pulses create a magnetic field which
travels down a specialized wire inside the sensor tube.
3. The interaction of the magnetic field around the wire
and the magnetic float causes a torsional 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.
4. A patented sensing element placed in the transmitter
assembly converts the received mechanical torsion
into an electrical return pulse.
5. The microprocessor-based electronics measures the
elapsed time between the start and return pulses
(Time of Flight) and converts it into a position measure-
ment which is proportional to the level of the float.
Features:
Calibrated from the factory
High Accuracy: .01% of Full Scale or +/- 1.27mm
Never Requires Re-Calibration: Set It & Forget It
Easy setup with waveform display
Not affected by agitation, foam or emulsion layers
No oscilloscope required
Designed to Mount Externally to K-TEK KM26 or other
Magnetic Level Gauge
Superior Sensor (Patent #5,473,245)
Local Indication with HMI Display
Dual Compartment Housing with Separate Field Terminal
Compartment
Loop Powered to 15.24m (50ft) Probe Length
Total and/or Interface Level Measurement
Temperature Range: -195.5 to 426.6ºC (-320 to 800ºF)
with options
Field Replaceable / Upgradable Electronics Module
Built-in RFI / EMI Filter
Digital Communications
Online Self-verification
Options:
Two Level Indications
Glass Viewing Window
316 Stainless Steel Enclosure
Built-in surge protection
Data
ELECTRONIC TRANSMITTER
Repeatability: ± 0.005% of Full Scale or 0.305 mm (0.012 in), whichever is greater Non-linearity: ± 0.01% of Full Scale or 0.864 mm (0.034in), whichever is greater Measuring accuracy: ± 0.01% of Full Scale or 1.27 mm (0.050 in), whichever is greater1 Supply voltage: 12 to 42 Vdc - 4-20mA HART loop powered Output/Communications: 4-20mA HART7® User Interface: Interactive display, DTM, EDDL with NE107 messaging Power consumption:
4-20mA: at 36.0 Vdc - 3.6mA 0.13 watts; 21mA 0.76 watts
at 12.0 Vdc - 3.6mA 0.043 watts; 21mA 0.25 watts
HART mode (4.0mA): at 36.0 Vdc 0.144 watts
at 12.0 Vdc 0.048 watts Maximum line resistance:
4-20mA: at 36.0 Vdc and 21mA, 1142 ohms*
at 24.0 Vdc and 21mA, 571 ohms
at 12 Vdc and 21mA, < 72 ohms**
*Maximum allowable with HART® communication is 700 ohms
**See the current/resistance chart
HART mode (4.0mA): < 650 to 700 ohms Polarity protection: 4-20mA, Diode in series with loop, FOUNDATION Fieldbus and Profibus PA, polarity insensitive Update rate: 10 measurements per second Minimum measuring span: 76.2 mm (3.0 in), consult factory if smaller span is required Damping: Field Adjustable, Range: 0.1 to 60 seconds Alarm output: NE43, Software or Hardware selectable. Upscale (21 mA) or Downscale (3.6 mA) Surge Suppression Integral surge suppression available with option code S1 Ambient temperature: -40 to 85ºC (-40 to 185ºF) Ambient2 Humidity: 0 to 100% RH Linearization: 21 Point Table Available Enclosure: Dual Compartment Enclosure material: Cast Low Copper Aluminum with Powder Coat or 316 Stainless Steel Device tag material: AISI 316 Stainless Steel Electrical connection: Two M20 x 1.5 or two 1/2in. FNPT, adapters and bus connectors also available Ingress protection: IP66, NEMA 4X
Standard probe length: 304.8mm to 15.24 m (1 to 50 ft); 90 degree probes (SEH Option) 304.8mm to 7.62m (1 to 25 ft)
Probe length tolerance:
± 3.2mm (0.125in) up to 3.0m (10ft); +/- 6.4mm (0.25in) up to 6.0m (20ft);
± 9.0mm (0.35in) up to 9.0m (29.5ft); +/- 25.4mm (1.0in) up to 15.24m (50ft)
Mounting: Stainless Steel Clamps for KM26 Magnetic Level Gauge Chamber Included; Optional Vibration Isolation Mounts
Notes:
1 Measurement accuracy is recorded at factory ambient conditions (23.88 °F +/-5.6 °C (75 °F +/-10 °F)) using a calibration magnet. Accuracy may be further influenced by
other factors such as float hysteresis, installation, process conditions and ambient conditions.
2 Some agency approvals may differ.
HART® is a registered trademark of the FieldComm Group
Suzhou Eco-Tech Suzhou Limited is located in Suzhou, China, a beautiful city known Oriental Venice.
We provide R&D, customize design and manufacturing, sales and technical consulting services for below products:
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Suzhou Eco-Tech Suzhou Limited is located in Suzhou, China, a beautiful city known Oriental Venice.
We provide R&D, customize design and manufacturing, sales and technical consulting services for below products:
1. Pressure swing adsorption nitrogen generator, pressure swing adsorption ...
