SL965 borehole datalogger for water level temperature and conductivity

  • pressure measurement range: 0 to 250m WC (please specify required depth at order)
  • temperature measurement range:
    • -5°C to +50°C
    • -5°C to +80°C
  • conductivity measurment range: 0..200mS/cm
  • pressure measurement accuracy:
    • -5 to +50°C:
      • 2..5mWC <=+/- 0.20%FS
      • 5..20mWC: <= +/- 0.10%FS
      • 20..250mWC: +/- 0.05%FS
    • -5 to +80°C:
      • 2..5mWC <=+/- 0.50%FS
      • 5..20mWC: <= +/- 0.10%FS
      • 20..250mWC: +/- 0.10%FS
  • pressure measurement 1 year stability (typical/maximum):
    • 2..5 mWC: <0.5% FS/ < 4mBar
    • 5 to 20 mWC: < 0.2% FS / < 4 mBar
    • 20 to 250 mWC: < 0.1% FS / < 0.2% FS
  • burst pressure: >200 Bar
  • temperature measurement accuracy:
    • -5°C to +50°C: <= +/- 0.5°C
    • -5°C to +80°C: <= +/- 1.5°C
  • conductivity measuring accuracy:
    • 0..200uS/cm: <= +/- 2.5% FS
    • 0.. 2mS/cm, 0..20mS/cm & 0..200mS/cm: <= +/- 1.5%FS
  • process connection: see ordering code & drawings below
    • closed
    • open
  • resolution: 14-bit
  • battery lifetime: typically 10 years. (1 measurement/hour 0..40°C)
  • storage/memory size: 
    • data-format: data are stored in ASCII format
    • up to 1.500.000 measurement values correlated with time & date
    • data remains in memory even without battery
  • reusable when memory full: yes
  • sample rate: 1 second to 24 hours
  • dimensions: see drawing below on this page
  • weight: approx 200g (vented cable 45g/metre)
  • material transducer: stainless steel (316L/1.4435), titanium (Gr. 2) 
  • material housing: stainless steel (316L/1.4435), titanium (Gr. 2) 
  • material seals: Viton (standard), EPDM, Kalrez or NBR (recommended for drinking water applications)
  • material cable: see specification sheet below
  • protection class datalogger: weather proof IP68
  • operating & process temperature: -5°C to +50/80°C depending on range (for operating temperature >50°C PE or FEP cable must be used)
  • storage temperature: -40°C to +85°C
  • conformity: 
    • EN61000-4-2: electrostatic discharge 8kV contact/15kV air
    • EN61000-4-4: transients (burst) 4kV motors, valves
    • EN61000-4-5: surge 2kV overvoltage
    • EN61000-4-6: conducted RF 10V (0.15 … 80Mhz) frequency inverters
    • EN60068-2-6: vibration 2G (5…2000Hz / +/- 
  • optional (see all options in model code below)
    • DLOCS PC application software
    • vented interconnection cable to compensate for atmospheric changes (specify length and material at ordering in table below, max. 250m)
    • ballast weight 316L stainless steel 1.4435

SL965 brochure

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SL965 borehole battery powered waterlevel temperature & conditivity datalogger
0 to 250 mWC, -5°C to +50/80°C & 0-200mS/cm

Image shows short interconnecting cable for display purposes only. Interconnecting cable can be up to 250m.

Dimensions and connection

SL965 borehole waterlevel temperature & conductivity datalogger

Model code

Please check each code on your specific needs and application. Contact us when in doubt.