LMK 458 H

LMK 458 H

LMK 458 H

Product catalog summary
Overview: The LMK 458H is a hydrostatic probe designed for marine and offshore applications, featuring HART® communication and a ceramic sensor. It is suitable for measuring levels in service and storage tanks, with high accuracy and stability.
Specifications: The probe offers nominal pressure ranges from 0.06 to 20 bar and level measurements from 0.6 to 200 mH2O. It supports a 2-wire output signal of 4-20 mA and operates within a supply voltage of 12-36 VDC. The device is accurate to 0.1% FSO for pressures ≥ 1 bar and 0.2% FSO for pressures < 1 bar.
Special Features: The LMK 458H is approved by several shipping authorities, including Lloyd's Register and Det Norske Veritas. It has a diameter of 39.5 mm, high overpressure resistance, and long-term stability. Optional versions include intrinsic safety for gas and dust, different housing materials, and various mounting options.
Performance: The probe exhibits a long-term stability of ≤ ±0.1% FSO per year and a mean response time of 140 msec. It can be configured for electronic damping, offset, and span adjustments.
Environmental and Electrical Protection: The probe operates in temperatures from -25 to 85°C and is protected against short-circuit and reverse polarity. It complies with EMC and ATEX directives for explosion protection.
Materials and Construction: The housing is available in stainless steel or CuNiFe, with a ceramic diaphragm. The cable sheath is flame-resistant and resistant to oil and seawater.
Accessories: Various flanges and mounting accessories are available, made from stainless steel and compatible with different probe models.
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Catalog excerpts

LMK 458 H-1

LMK 458H Nominal pressure from 0 ... 60 cmH2O up to 0 ... 200 mH2O Output signals Probe with HART®-communication for Marine and Offshore Ceramic Sensor The hydrostatic probe LMK 458H has been developed for measuring level in service and storage tanks and is certificated for shipbuilding and offshore applications. 2-wire: 4 ... 20 mA others on request Special characteristics ► shipping approvals acc. to: Lloyd's Register (LR), Det Norske Veritas ■ Germanischer Lloyd (DNV-GL) China Classification Society (CCS), American Bureau of Shipping (ABS) ► diameter 39.5 mm (setting of offset, span and damping) ► high overpressure resistance ► high long-term stability Optional versions ► IS-version Ex ia = intrinsically safe for gas and dust ► diaphragm AI2O3 99.9 % ► different housing materials (stainless steel, CuNiFe) ► screw-in and flange version probe flange, mounting clamp A permissible operating temperature up to 85°C and the possibility to use the device in intrinsic safe areas enable to measure the pressure of various fluids under extreme conditions. The basis for the LMK 458H is a self-developed capacitive ceramic sensor element, which offers a high overload resistance and medium compatibility. Preferred areas of use are Water drinking water abstraction desalinization plant Shipbuilding / Offshore ballast tanks draught monitoring level measurement in ballast and storage tanks www.bdsensors.de [email protected] BD SENSORS GmbH BD-Sensors-StraBe 1 D - 95199 Thierstein

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LMK 458 H-3

LMK 458H Probe for Marine and Offshore Technical Data Wiring diagram 2-wire-system (current) HART® supply + Pin configuration Electrical connection Supply VS + Supply VS – Shield Dimensions for housing in stainless steel and CuNiFe (mm / in) probe screw-in version cable colours (IEC 60757) WH (white) BN (brown) GNYE (green-yellow) prepared for mounting with stainless steel pipe flange version transmitter flange is not part of supply and has to be ordered separately HART® is a registered trade mark of HART Communication Foundation; Windows® is a registered trade mark of Microsoft Corporation

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LMK 458 H-4

Transmitter flange for flange version dimensions in mm Technical data Mounting flange with cable gland cable gland M16x1.5 with seal insert (for cable-0 4 ... 11 mm) n x d2 Flange material Material of cable gland Seal insert Hole pattern Ordering type all probes standard: brass, nickel plated material: TPE (ingress protection IP 68) on request: stainless steel 1.4305 (303); plastic DN25 / PN40 with cable gland brass, nickel plated DN50 / PN40 with cable gland brass, nickel plated DN80 / PN16 with cable gland brass, nickel plated

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LMK 458 H-5

pressure measurement Housin Design stainless steel 1.4404 (316L) copper-nickel-alloy (CuNi10Fe1Mn) customer Diaphragm Output Seals probe flange version 2 screw-in version HART®-communication 4 ... 20 mA / 2-wire HART®-communication intrinsic safety 4 ... 20 mA / 2-wire customer FKM EPDM FFKM 3 customer Electrical connection TPE-U-cable (blue, 0 7.4 mm) 4 customer standard prepared for mounting with stainless steel pipe 5 customer 1 nominal pressure ranges sealed gauge and absolute from 1 bar 2 mounting accessories are not part of supply and have to be ordered separately 3 min. permissible temperature...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.