Lvl sensor w/datalogger,perm,vented,<50m

General description:
Permanent borehole logger with vented cable for installation in boreholes with drawdown of max. 50m, with measurement of water level and temperature.

Technical specification:
The borehole pressure (water level) and temperature datalogger is meant for long-term/permanent equipment of boreholes. The sensor is made of stainless steel or equivalent corrosion resistant material.
Pressure measurement is relative to atmospheric pressure with the use of a vented cable (no separate barometer required for barometric compensation). Pressure range is 0 to 5 bars (0 to 50m) with a resolution of 0.001 bar and accuracy of 0.05% FS.
Temperature range is 0 to 50°C, with a resolution of 0.1°C, accuracy +/- 0.3°C

The sensor has a 22mm diameter and comes with a 50m long PUR vented cable with stainless steel reinforcement (additional cable length available for procurement separately for deeper boreholes/aquifers, see below).

The datalogger is equipped to transfer data both via wire (from a laptop) or wireless through a remote transmission unit with integrated cellular modem mobile communication system and sim card slot for cellular network communication (sim card to be procured locally).
The datalogger/transmission unit comes with 4 x 1.5V easily replaceable C batteries. It also has internal storage capacity with 1’120’000 data points storage capacity, for manual (wired) download if necessary.

The transmitter is housed in a robust weatherproof, impact and UV resistant enclosure rated IP67 and a 35mm diameter so that it can be fitted inside a borehole as well, to prevent vandalism.

The components’ material is approved for use with drinking water. The system comes with a fixing device to attach to the top of the borehole.

Installation and maintenance manual are included at a minimum in English, and in French and Spanish where available.

Packing instructions:
The package will be sturdy, with extra protection around the sensor (e.g. double wrapping + extra cardboard).

Related products:
S0005467: additional vented cable length, per length of 10m
S0005468: Upgrade of the sensor to include conductivity measurement as well
S0005469: LoRaWAN transmission device

Alternative products:
S0005466: Permanent vented system, 100m
S0005463: Permanent non-vented (absolute) system, 50m
S0005465: Permanent non-vented (absolute) system, 100m

Useful links:
UNICEF Groundwater Monitoring Product Guide:
Supply Intranet - Groundwater monitoring product guide