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data sheet LMK 809

data sheet LMK 809

data sheet LMK 809

Product catalog summary
Overview: The LMK 809 is a plastic submersible probe designed for continuous level measurement in aggressive and polluted media. It features a high purity ceramic sensor with high chemical and overpressure resistance, suitable for applications such as sewage, wastewater treatment, and level measurement in acids and lyes.
Specifications:
  • Accuracy: Standard accuracy is 0.35% FSO, with an optional accuracy of 0.25% FSO, compliant with IEC 60770.
  • Nominal Pressure: Ranges from 0.4 mH2O to 100 mH2O.
  • Output Signals: Available in 2-wire (4-20 mA) and 3-wire (0-10 V) configurations.
  • Materials: Housing options include PP-HT and PVDF, with a ceramic diaphragm made of 99.9% Al2O3.
Performance:
  • Long-term Stability: ≤ ± 0.1% FSO per year.
  • Response Time: Mean response time is less than 200 msec, with a maximum of 380 msec.
  • Thermal Effects: Tolerance band ≤ ± 1% FSO in a compensated range of -20 to 80°C.
Environmental and Electrical Characteristics:
  • Temperature Range: PVDF housing operates from -30 to 60°C, while PP-HT operates from 0 to 60°C.
  • Ingress Protection: Rated at IP68.
  • Electrical Protection: Includes permanent short-circuit protection and reverse polarity protection.
Optional Features:
  • Different cable and elastomer options for enhanced media compatibility.
  • Prepared for mounting with a pipe for ease of installation.
Accessories: Terminal clamps are available in steel or stainless steel, suitable for cables with diameters from 5.5 to 10.5 mm.
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Catalog excerpts

data sheet LMK 809-1

LMK 809 Plastic Probe for Aggressive Media High Purity Ceramic Sensor accuracy according to IEC 60770: standard: 0.35 % FSO option: 0.25 % FSO Nominal pressure from 0 ... 0.4 mH2O up to 0 ... 100 mH2O Output signals Basic element of the plastic probe is the flush mounted ceramic sensor, which makes cleaning easier when solid parts of the medium deposit on it. Different cable and seal materials are available in order to achieve maximum media compatibility. 2-wire: 4 ... 20 mA 3-wire: 0 ... 10 V others on request Special characteristics ► chemical resistance high overpressure resistance especially for tank level measurement of viscous and aggressive media housing material PP-HT or PVDF The plastic submersible probe LMK 809 is designed for continuous level measurement in highly polluted and most of aggressive media. Basic element is a capacitive ceramic sensor. Preferred areas of use are Sewage waste water treatment water recycling dumpsite Aggressive media level measurement in most of acids and lyes different kinds of cables and elastomers prepared for mounting with pipe BD SENSORS GmbH BD-Sensors-Straße 1 D - 95199 Thierstein

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data sheet LMK 809-2

Technical Data Input pressure range Nominal pressure gauge [bar] 0.04 Level [mH2O] 0.4 Overpressure [bar] 2 Max. ambient pressure (housing): 10 bar Output signal / Supply Standard Option Performance Accuracy 1 ≤ ± 1 % FSO -20 … 80 °C medium / electronic / environment / storage: -30 … 60 °C medium / electronic / environment / storage: 0 … 60 °C permanent no damage, but also no function emission and immunity according to EN 61326 PUR (-25 … 70 °C) black Ø 7.4 mm FEP 4 (-25 … 70 °C) black Ø 7.4 mm TPE-U (-25 … 100 °C) blue Ø 7.4 mm others on request signal line/shield also signal line/signal line:...

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data sheet LMK 809-3

Technical Data Pin configuration Electrical connection cable colours (IEC 60757) WH (white) BN (brown) GN (green) GNYE (green-yellow) Supply + Supply – Signal + (only for 3-wire) Shield Dimensions (mm / in) prepared for mounting with pipe Accessories Terminal clamp Technical data Suitable for all probes with cable ∅ 5.5 ... 10.5 mm Material of housing standard: steel, zinc plated optionally: stainless steel 1.4301 (304) Material of clamping jaws PA (fibre-glass reinforced) and positioning clips Dimensions (mm) 174 x 45 x 32 Hook diameter 20 mm Weight Ordering type Ordering code Terminal clamp,...

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data sheet LMK 809-4

Housing PP-HT (0 … 60 °C) PVDF (-30 … 60 °C) customer Diaphragm Seal FKM EPDM FFKM customer Accuracy standard: option: Electrical connection PUR-cable (black, Ø 7.4 mm) FEP-cable (black, Ø 7.4 mm) TPE-U-cable (blue, Ø 7.4 mm) customer Cable length in m Special version standard prepared for pipe R1" customer shielded cable with integrated ventilation tube for atmospheric pressure reference pipe is not part of the supply © 2024 BD|SENSORS GmbH - The specifications given in this document represent the state of engineering at the time of publishing. We reserve the right to make modifications to the...

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