LMK 387 Stainless Steel Probe Ceramic Sensor accuracy according to IEC 60770: standard: 0.35 % FSO option: 0.25 % FSO Nominal pressure The stainless steel probe LMK 387 was developed for level and gauge measurement in waste water, sludge or water courses. The mechanical robustness of the flush ceramic diaphragm facilitates an easy disassembly and cleaning of the probe in case of service. from 0 ... 1 mH2O up to 0 ... 100 mH2O Output signal 2-wire: 4 ... 20 mA others on request Compared to the level probe LMK 382 the outer diameter is only 22 mm, whereby the installation or retrofitting can be easily carried out in 1 "pipes or in confined installation conditions. An IS-version (zone 0) is also available. good long-term stability especially for waste water Preferred areas of use Water groundwater and level monitoring housing material titanium IS-version Ex ia = intrinsically safe for gas and dust drinking water certificate according to DVGW and KTW mounting with stainless steel tube Fuel and oil tank battery biogas plants Sewage waste water treatment water recycling different kinds of cables and elastomers BD SENSORS GmbH BD-Sensors-Straße 1 D - 95199 Thierstein

LMK 387 Stainless Steel Probe Technical Data Input pressure range Nominal pressure gauge [bar] 0.1 Level [mH2O] 1 Overpressure [bar] 3 Burst pressure ≥ [bar] 4 Permissible vacuum [bar] -0.2 Max. ambient pressure (housing): 40 bar in intrinsically safe circuit 30 VDC in intrinsically safe circuit 54 mA in intrinsically safe circuit 405 mW ≤ ± 1 % FSO -20 … 80 °C -25 ... 85 °C permanent no damage, but also no function emission and immunity according to EN 61326 additional external overvoltage protection unit in terminal box KL 1 or KL 2 with atmospheric pressure reference available on request Electrical...

LMK 387 Stainless Steel Probe Technical Data Miscellaneous Drinking water certificate 6 according to DVGW W 270 and UBA KTW (with order the indication "with drinking water certificate" is necessary) prepared for mounting with stainless steel pipe max. 22 mA approx. 180 g (without cable) IP 68 EMC Directive: 2014/30/EU 2014/34/EU Option cable protection Current consumption Weight Ingress protection CE-conformity ATEX Directive 6 only possible with EPDM seal in combination with TPE-U cable; not possible with IS-version (explosion protection) or housing material titanium Pin configuration Electrical...

LMK 387 Stainless Steel Probe Technical Data screw-in versions in stainless steel 1.4404 (316 L) cable diameter Ø9 mm for TPE-U cable (red), drawings for option with Pt 100 on request

LMK 387 Stainless Steel Probe Technical Data Accessories cable gland M16x1.5 with seal insert (for cable-∅ 4 ... 11 mm) size b D d2 d4 f k n Technical data Suitable for Flange material Material of cable gland Seal insert Hole pattern Ordering type all probes stainless steel 1.4404 (316L) standard: brass, nickel plated material: TPE (ingress protection IP 68) according to DIN 2507 on request: stainless steel 1.4305 (303); plastic Ordering code DN25 / PN40 with cable gland brass, nickel plated DN50 / PN40 with cable gland brass, nickel plated DN80 / PN16 with cable gland brass, nickel plated Terminal...

Ordering code LMK 387 Pressure probe screw-in version G1/2" open screw-in version G3/4" flush Electrical connection PUR-cable (black, Ø 7.4 mm) FEP-cable (black, Ø 7.4 mm) TPE-U-cable (blue, Ø 7.4 mm) TPE-U-cable (red, Ø 9.0 mm) DVGW / KTW: TPE-U-cable (blue, Ø 7.4 mm) customer Accuracy 0.35 % FSO standard 0.25 % FSO option customer Cable length in m Special version standard with temperature sensor Pt 100 prepared for mounting with stainless steel pipe customer 4 … 20 mA / 2-wire intrinsic safety 4 … 20 mA / 2-wire customer FKM EPDM EPDM FFKM customer stainless steel 1.4404 (316L) titanium customer...