PDFPrintE-mail

Dwyer-Magnetorestrictive liquid level sensor-Lmeg

( Dwyer )

General

Magnetostrictive Level Measurement System takes field proven sensing technology and incorporates intrinsic

safety with a field programmable zero and span. Packaging is our patented low clearance design, making the

DM330 ideal for level monitoring in a variety of liquids and tank designs. Two Variations - Sensors are available in rigid 316SS or flexible PVDF designs. The stainless steel version has a choice of a mini-connector

or an optional housing which includes terminal connectors with zero and span adjustments. All offer totally welded construction. The flexible (PVDF) version offers with a variety of mounting options and provides cost effective, high accuracy inventory monitoring in tanks up to 40 feet. All of the sensor’s electronics are integrated within the 5/8 “ diameter sensing tube. This breakthrough in package design eliminates the

electronics enclosure at the top of the sensor, which reduces cost and offers greater options for insertion and mounting. The DM330 is a two wire loop powered intrinsically safe sensor with a configurable 4 -20 mA span. A variety of floats and mounting accessories are available to fit virtually any application. Included is a sanitary stainless steel version.

Easy Installation

            • No calibration needed

            • Program zero & span in the field

            • Set upper and lower limits on bench prior to

               installation.

High Accuracy

            • 0.1% accuracy full scale over 4-20mA span.

               Minimal Maintenance

            • Unique diagnostic output provides float position

               beyond set span, beyond active range, as well

               as loss of float.

Patented Low Clearance Design

            • Electronics all within 5/8" diameter sensor allows

               wider mounting options at less cost.

               Patented Flexible Probe

            • PVDF version provides cost effective, high

               accuracy inventory monitoring up to 40 feet

               with flexibility and reduced weight for easier

               installation.

Intrinsically Safe

            • FM, ATEX, CSA, CE, 3A Approved

 

Features:

Technology

Magnetostrictive

Calibration

None

Operating Voltage

13.5 to 30Vdc

Loop Impedance (R)

1000 ohms 24Volts

Output

4 to 20Ma

Temperature Range

-20°C to 100°C (-4°F to 212°F) Not Approved for Hazardous

Locations above 70°C (158°F)

Null Zone

-20°C to 70°C (-4°F to 158°F) Max.

Pressure Rating

Stainless Steel: 1000psi (69 bar)float dependent

PVDF (flexible): 150 psi (10 bar)

Resolution

0.025% full scale or 0.014" (0.35mm) (whichever is greater)

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)

Enclosure

Stainless Steel Standard Epoxy painted aluminium housing (option)

Probe Material: 316SS Probe Rating: IP68

Probe Length

Stainless Steel: 20" - 192" (508 mm - 7315 mm) Consult factory for lengths to 288" PVDF (flexible): 20" - 480" (508 mm - 12192 mm)

Null Zone (Top)

Stainless Steel: 8" (203 mm)

PVDF (flexible): 12" (305 mm)

Deadband (Bottom

Stainless Steel: 2" (51 mm) PVDF (flexible): 6 to 14" (152 mm to 356 mm)