DG-ALM-R-L10 Ultrasonic Level Meter

In applications such as underground manhole water-level remote sensing, the product’s non-contact ultrasonic ranging capability enables accurate water-level measurement and effectively handles conditions involving water quality, impurities, and floating debris. When deploying the device, it is important to account for the issue of the sensor entering an ultrasonic blind zone at high water levels.

Belongs to:

Urban Underground Pipeline Monitoring Instrument

Consulting

Data Download

Details

产品描述

- Commodity name: DG-ALM-R-L10 Ultrasonic Level Meter
Measurement principle

In applications involving underground manhole water-level remote sensing, the product’s non-contact ultrasonic ranging capability enables accurate water-level measurement and effectively handles conditions such as water quality, impurities, and floating debris. When deploying the device, it is important to account for the issue of the sensor entering the ultrasonic blind zone at high water levels. 。

Key Features

The host unit is equipped with an expansion bolt kit, enabling rapid installation at the wellhead.
The host features a stainless steel housing, offering excellent corrosion resistance, waterproofing, and impact resistance.
Rigid sealing, unaffected by temperature fluctuations.
Supports multiple lid openings without compromising waterproofing, making on-site battery replacement convenient.
A color local display unit accessory can be optionally added.
Low self-discharge batteries enable devices to achieve longer battery life.
The ultrasonic transmission energy can be adaptively adjusted based on the echo’s energy intensity.
Built-in artificial sound speed correction function

Application scenarios

Measurement of manhole water levels, river channel water levels, and canal water levels is carried out under conditions where external power supply is unavailable—for example, when connection to the municipal grid or a solar‑powered system is not feasible. Data are transmitted wirelessly to a server.

Technical Specifications

Dead zone – maximum range (operating frequency kHz): 0.015–1.5 (100), 0.025–0.3 (64), 0.035–10 (40), 0.5–16 (25)
Ultrasonic sensors: 100 kHz / 0.150–1.500 m, 64 kHz / 0.250–3.000 m, 40 kHz / 0.350–10.000 m — operating frequency / dead zone to maximum range
Water level accuracy: 0.5% FS ± 0.001 m
Water level resolution: 0.001 m
Ultrasonic operating frequency: 40 kHz
Ultrasonic blind zone: 0.015 m
Protection: IP68
Host housing: 304
Water can be optionally equipped with accessory 1: an external temperature sensor, with accuracy of 0.5℃, resolution of 0.1℃, and a measurement range of -10℃. ~ 80℃
Optional accessory 2: A combustible (methane) gas concentration sensor can be added; however, this will reduce the device’s battery life.
Operating temperature: -10°C ~ 70°C
Battery: Built-in lithium‑ion battery, non‑rechargeable, 76 Ah or 133 Ah / 3.6 VDC; self‑discharge rate not exceeding 5% per year.
Refresh: Factory settings: measures once every 5 minutes and uploads data once; NB‑IoT battery life can be configured: under the “measure‑and‑upload every 5 minutes” operating mode, a 76 Ah battery lasts 4 years, while a 133 Ah battery lasts 7 years.
4G battery life: Under the 5-minute test-and-transmit operating condition, a 76 Ah battery lasts 4 years, while a 133 Ah battery lasts 7 years.
Wireless breakpoint resumption: When the base station signal is interrupted, data is automatically saved and, once the wireless signal is restored, the timestamped data is resent.
Bluetooth (optional): BLE Low Energy 5.1, range up to 150 meters in open space, sensitivity: -90 dBm, transmit power: +6 dBm, standby current: 50 µA.