LM7 General Purpose Submersible Transmitter

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APPLICATIONS:

  • Appropriate for all level and depth measurement applications including open tanks, ground water monitoring, sewage and water treatment facilities

DESCRIPTION & FEATURES:

  • Designed for continuous level measurement in water or waste water (thin film)
  • Good linearity for long term stability
  • Available ranges up to 300 psi
  • Wide range of mechanical and electrical connections
  • ±0.5% accuracy
  • NEMA 6P / IP68. Approved for outdoor use
  • Customizable
  • RoHS compliant
  • 5 year warranty

DOCUMENTATION:

Output Signal

Standard 2-wire: 4-20 mA / Vs = 8-32 Vdc

Optional 3-wire: 0-20 mA / Vs = 14-30 Vdc

                               0-10 V / Vs = 14-30 Vdc

Accuracy ≤±0.5% FSO
Permissible Load

Current 2-wire: Rmax = [(Vs – Vs min) / 0.02] Ohm

Current 3-wire: Rmax = 500 Ohm

Voltage 3-wire: Rmin = 10 kOhm

Influence Effects

Supply: 0.05% FSO / 10 V

Load: 0.05% FSO / kOhm

Response Time ≤10 ms
Thermal Error ≤±0.2% FSO / 10K
Permissible Temperatures

Medium: 14°F to 158°F (-10°C to 70°C)

Storage: -13°F to 158°F (-25°C to 70°C)

Short Circuit Protection Permanent
Reverse Polarity Protection No damage. No function.
Electromagnetic Protection Emission and immunity according to EN 61326
Connecting Cables

Cable capacitance: Signal line/shield and signal line/signal line: 160 pF/m

Cable inductance: Signal line/shield and signal line/signal line: 1 µH/m

Electrical Connection Cable with sheath material: PVC grey, PUR black, FEP black
Pollution Degree 4, electrical equipment for outdoor use
Housing 316L SS
Seals FKM  / EPDM
Diaphragm Ceramic AI2O96%
Protection Cap POM
Current Consumption

Current: 25 mA max

Voltage: 7 mA max

Weight 250 g (without cable)
Enclosure Rating NEMA 6P / IP68
CE Conformity EMC directive: 2004/108/EC

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LM7 GENERAL PURPOSE SUMBERSIBLE TRANSMITTER, 0-15 PSI, 16M PVC CABLE
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LM7 Series Submersible Transmitter, 0-100 PSI, 50 m PVC Cable
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