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 waterlevel and borehole datalooger
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 drawing

Model code

SL965 borehole waterlevel and temperature datalogger orderingcode

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