This locking well cap provides convenient mounting for HOBO loggers in wells. Used with the HOBO MX2001 it supports the logger at the top of the well for optimal wireless transmission range.
Highlighted Features

•  Mounts on standard 2” (5cm) PVC and steel wells
•  Includes mounting disk with bolt for suspending MX2001 loggers or suspension cables
•  1/8” vent hole
•  Easy tap-on installation without glue or screws
•  Heavy duty Nylon construction with UV protection
•  Can be secured with standard #1 padlock

Includes:

• (1) Onset HOBO Well Cap
• (1) mounting disk with bolt for suspending MX2001 loggers or suspension cables
•  1/8” vent hole

Specifications:

• Measurements:  Actual Conductivity, Temperature, Specific Conductance at 25°C(calculated)
• Conductivity Calibrated Measurement Ranges: Low Range: 0 to 1,000 μS/cm; Full Range: 0 to 10,000 μS/cm
• Conductivity Calibrated Range  Temperature Range: 5° to 35°C (41° to 95°F)
• Conductivity Extended Ranges:Low Range: 0 to 2,500 μS/cm ; Full Range: 0 to 15,000 μS/cm
• Temperature Measurement Range: -2° to 36°C (28° to 97°F)
• Specific Conductance Accuracy (in Calibrated Range): Low Range: 3% of reading, or 5 μS/cm, and Full Range: 3% of reading, or 20 μS/cm, whichever is greater, using
• Conductivity Data Assistant and calibration measurements: Conductivity Resolution 1 μS/cm
• Temperature Accuracy (in Calibrated Range): 0.1°C (0.2°F)
• Temperature Resolution: 0.01°C (0.02°F)
• Conductivity Drift:  Less than 3% sensor drift per year, exclusive of drift from fouling
• Response Time:  1 second to 90% of change (in water)
• Operating Range:  -2° to 36°C (28° to 97°F) - non-freezing
• Memory: 18,500 temperature and conductivity measurements when using one conductivity range; 14,400 sets of measurements when using both conductivity ranges (64 KB total memory)
• Sample Rate: 1 second to 18 hrs, fixed or multiple-rate sampling with up to 8 user-defined sampling intervals
• Clock Accuracy: ±1 minute per month
• Battery:3.6 Volt lithium battery
• Battery Life: 3 years (at 1 minute logging)
• Maximum Depth: 70 m (225 ft)
• Weight: 193:g (6.82 oz), buoyancy in freshwater: -59.8 g (-2.11 oz)
• Size:  3.18 cm diameter x 16.5 cm, with 6.3 mm mounting hole (1.25 in. diameter x 6.5 in., 0.25 in. hole)
• Wetted Housing Materials:  Delrin®, epoxy, stainless steel retaining ring, polypropylene, Buna rubber O-ring, titanium pentoxide (inert coating over sensor); The CE Marking identifies this product as complying with all relevant directives in the European Union (EU).