H520 – Level Gauge for Wells, Sump Pits, and Tanks

The H520 water level meter is designed to measure water levels in wells, boreholes, retention tanks, and rainwater and wastewater collection tanks.

Two types of sensors with measuring ranges of 0–10 m or 0–25 m of water level
Quick and easy sensor installation by submerging it by the cable or screwing it into a 1/2" threaded fitting
Absolute pressure measurement allows the use of an inexpensive 3-wire connection cable between the TSH27 sensor and the H520 display unit
Atmospheric pressure sensor integrated into the level meter
Durable stainless steel housing of the TSH27 sensor
Quick setup of measurement parameters using 3 buttons inside the H520 display unit
Binary output for relay activation
Wide supply voltage range from 8 to 28 V DC, low current consumption
A professional solution at an affordable price

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Description

The two red LED displays on the H520 level gauge show the measured level in meters with a resolution of 0.1 m and the level as a percentage of the set maximum possible level. The percentage value is also clearly shown on a bar graph.
The electronics of the H520 level meter are fully integrated into a plastic housing measuring 80 x 120 x 15 mm. The level gauge can therefore be mounted on the front panel of a control cabinet or on the dashboard of a tanker vehicle, even without the lower part of the housing.
The H520 level meter does not have its own power battery; therefore, it requires an external power supply in the range of 8 to 28 V DC / 0.15 A.
The H520 level gauge does not allow remote access to measured data, unlike the H1 through H40 data loggers or the H530 and H531 smart metering modules.

Applications

Measuring water levels in wells, boreholes, retention basins, and rainwater and wastewater collection tanks

Technical specifications

Technical Specifications	H520 - Water Level Gauge for Wells, Sumps, and Tanks
Display	dual two-digit LED display, 15 mm high, bar graph with 3.5% increments
Level Display Resolution	0.1 m for a measurement range up to 10 m, 1 m for a measurement range greater than 10 m
Analog Input	voltage-adapted for TSH27 sensors or 4–20 mA current (selectable via jumpers)
Sensor Power Output	12 V / max. 40 mA (terminal 3)
Measurement rate	5 measurements/sec
Transistor output	open collector, Umax = 28 V DC, Imax = 300 mA
RS485 bus	Modbus RTU SLAVE protocol, 19,200 Bd, address 15 (16, 17, 18)
Supply voltage / current	8–28 V DC, max. current draw 0.15 A (at 12 V)
Dimensions	120 x 80 x 55 mm, 2 cable glands for connecting Unap and relays
Enclosure material	ABS
Protection rating	IP66

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Related products

H531 - Level Gauge for Wells, Sump Pits, and Tanks

The H531 level meter display unit, together with the TSH27 submersible level sensor, forms a system designed to measure liquid levels in wells, boreholes, or rainwater collection pits and retention tanks.

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