H2 – Level Logger

The Level Logger H2 was designed to monitor water levels and flow rates in open watercourses and to monitor rainfall during the construction of local warning systems (LVS).
The device uses a GSM/GPRS+SMS modem, it transmits the measured data to a server database at regular intervals and, in the event of an emergency, sends warning SMS messages triggered by a threshold or gradient alarm for rising water levels or when the moving sum of precipitation exceeds a set value over a specified time interval.

8-channel telemetry station specialized in measuring water levels and precipitation
Ability to calculate precipitation using coefficients from a dynamically calibrated rain gauge
Current inputs for pressure and level sensors in VDJ and ČS
Binary inputs (flooding, building intrusion)
GSM/GPRS data transmission to a server
Integrated SMS alert system
Up to 5 years of battery life; 12 V DC external power input
Parameters configurable via the Internet
Rugged metal housing with IP67 protection
Low operating costs thanks to the ability to use standard prepaid SIM cards

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Description

Level Logger H2 uses data hosting provided on the manufacturer’s server. This means users do not need to set up their own server or handle its operation and maintenance. Authorized users can access the data stored on the server at any time via a standard web browser. In addition to graphical and tabular visualizations, the server also enables statistical calculations of balance flows, searching for threshold values, data exports in several formats, and other functions.
The Level Logger H2 comes with a stainless steel bracket for mounting the data logger on a wall and a GSM whip antenna. Several GSM antennas with varying gain levels are available for installing the device in underground shafts and areas with weak signals. An antenna extension cable can also be ordered from the supplier.

Applications

Water level gauges, monitoring the conditions of rivers and streams
Monitoring of instantaneous and maximum peak flows
Continuous monitoring of water levels in gauging stations and reservoirs
Construction of networks of rain gauge and limnigraphic stations with the capability to send SMS alerts

Technical specifications

Technical Specifications	H1 - HydroLogger
Number of Analog Inputs	2 current inputs (0)4–20 mA
Number of pulse inputs	2 fast pulse inputs (PV1, PV2), 2 slow pulse inputs (PV3, PV4)
Number of binary inputs	unused inputs PV1 through PV4
RS-485 Interface	1x for connecting sensors, FINET protocol
Number of Recording Channels	8 analog (A), 8 binary (B), 8 control (C), 1 text
Archiving interval	adjustable from 1 minute to 1 day, separately for A channels
Data memory capacity	2 MB Flash, records up to 300,000 values, cyclic rollover
Real-time correction	automatic from a server
Battery	SAFT LSH20 3.6 V lithium battery
External Supply Voltage	8–15 V DC, quiescent current 50 µA
Operating Life	up to 5 years without battery replacement
GSM/GPRS module	GPRS Class 12, slots: 4Rx / 4Tx
GSM antenna	1 dB rod antenna included with the station, FME connector
Internal sensor	relative humidity and temperature
PC connection interface	RS-232, M8 connector
Operating temperature	-20 °C to +50 °C
Housing material	Aluminum alloy and plastic
Dimensions (W x H x D)	160 x 90 x 60 mm (excluding GSM and cable glands)
Weight	1.1 kg, including stainless steel bracket and battery
Protection Rating	IP67

Downloads

Price List Cenik 2026 V101

Related products

H1 - Hydro Logger

The Hydro Logger H1 expands the line of small telemetry stations manufactured by FIEDLER. The GPRS data logger is suitable for collecting data from sites with or without mains power and wherever it is sufficient to transmit measured data to a server at longer intervals, typically once a day (the data logger’s internal battery is rated for 4,000 data sessions). Once preset threshold values are reached, data transmission and warning SMS messages are activated immediately. When using an external power source (12 V battery, AC adapter), the frequency of data transmission is not limited in any way.

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