SENSVISION HLC 400H – An Equivalent to the BD Sensors LMK 458 H
The BD Sensors LMK 458 H is the HART variant of the marine and offshore submersible level probe. Suspended in the tank, it measures level hydrostatically using a capacitive ceramic sensing element, covering nominal ranges from 0 … 60 cmH₂O up to 0 … 200 mH₂O with an accuracy of 0.1% FSO at nominal pressures of 1 bar and above.
The SENSVISION HLC 400H is a directly equivalent marine HART probe, with standard nominal ranges from 0 … 0.6 mH₂O up to 0 … 200 mH₂O and matching accuracy of up to ±0.1% of span for nominal pressures from 0.6 bar, or ±0.2% of span from 160 mbar, in both cases at turndown ratios up to 5:1.
Both probes carry the HART digital communication layer over the 4 … 20 mA loop. The analogue signal continues to drive the ship or platform control system while HART runs alongside it, so a probe at the bottom of a ballast or service tank can be re-ranged and interrogated without recovering it. On the HLC 400H this covers electronic damping adjustable from 0 to 100 seconds, measuring offset up to 80% of span, and span turndown of up to 10:1 depending on the nominal range selected.
Marine classification and seawater resistance carry across as well. The HLC 400H is supported by Lloyd’s Register, DNV, China Classification Society and American Bureau of Shipping approvals, with EMC to EN 61326 and DNV requirements, and offers the same CuNi10Fe1Mn housing option alongside stainless steel 1.4404 (316L). The shielded TPE-U cable carries an integrated atmospheric reference tube, and the probe is sealed to IP 68 with a POM protection cap.
Whether you are replacing an installed BD Sensors LMK 458 H or specifying a remotely configurable classed level probe for a new ballast, draught or offshore storage application, the SENSVISION HLC 400H delivers equivalent measurement performance, digital configurability and approval coverage as a dependable, cost-effective alternative.
BD SensorsTM and associated part numbers (e.g., LMK 458 H) are trademarks or registered trademarks of BD Sensors GmbH. Diversified Technologies is an independent distributor and is not affiliated with, endorsed by, or sponsored by BD Sensors GmbH. References to BD Sensors and associated part numbers on this website are used strictly for informational, comparative, and cross-referencing purposes to assist customers in finding functional alternatives. All trademarks are the property of their respective owners.
Further Information on the HLC 400H
The SENSVISION HLC 400H has been engineered to provide the same fit, form, function and performance as the BD Sensors LMK 458 H, making it an ideal replacement for existing installations and new OEM applications.
Key Features:
Nominal level ranges of 0.6, 1.6, 4, 10, 20, 50, 100 and 200 mH₂O
Nominal pressure ranges of 0.06, 0.16, 0.4, 1, 2, 5, 10 and 20 bar
4 … 20 mA, 2-wire output with HART communication
Marine approval options from Lloyd’s Register, DNV, CCS and ABS
Remote adjustment of damping, offset and measuring span over HART
Accuracy up to ±0.1% of span (PN from 0.6 bar) at turndown up to 5:1
Accuracy up to ±0.2% of span (PN from 160 mbar) at turndown up to 5:1
Maximum turndown of up to 10:1, or up to 3:1 below 160 mbar
Adjustable damping 0 to 100 seconds and offset 0 to 80% of span
Overpressure resistance from 2 to 45 bar, depending on nominal pressure
Seawater-resistant CuNi10Fe1Mn housing option alongside stainless steel 1.4404 (316L)
Ceramic Al₂O₃ diaphragm, 96% standard with optional 99.9%
Seal options in FKM, FFKM and EPDM, POM protection cap
Shielded TPE-U cable with integrated atmospheric reference tube
Supply voltage 12 … 36 VDC standard, 14 … 28 VDC intrinsically safe, 24 VDC rated
Permissible medium, ambient and storage temperature -25 °C to 85 °C
IP 68 ingress protection, 39.5 mm housing diameter, from 650 g without cable
EMC to EN 61326 and DNV requirements; optional Ex ia for Zone 0 and Zone 20
Submersible, flange and screw-in G 1 1/2″ installation options
The SENSVISION HLC 400H is manufactured to deliver equivalent performance, reliability and installation compatibility to the BD Sensors LMK 458 H, allowing users to transition to the HLC 400H with confidence while maintaining the same standard of HART-enabled marine level measurement.