Description
FIELDS OF APPLICATION
The SQ-R is specially designed for municipal and industrial applications in wastewater treatment plants, sewers and process water circuits. For example, the amount of wastewater entering a treatment plant can be monitored to control the facility and allocate wastewater costs. Furthermore, the duration and frequency of rain and flood events can be recorded, which is essential for sewer management by plant operators and utilities.
IMPLEMENTATION
Due to its compact design and flexible mounting device, the sensor is very easy to install, for example under bridges or extensions, on ceilings of sewers or in manholes. The non-contact measuring technology has the decisive advantage that the sensor can be mounted above the water level. Thus, the SQ-R can be easily installed, is readily accessible and cannot be clogged or blocked by entrained solids, which is often the case with submerged sensors.
A specially designed adjustable mounting bracket is available for installation in manholes of sewers.
SQ-R AS MOBILE, AUTONOMOUS MONITORING STATION
For remote monitoring sites without grid connection, the SQ-R can also be operated autonomously: In combination with a data logger, a data transmission modem, a powerful battery and an adequate solar module, the SQ-R can be upgraded to an independent system. Optionally, it can also be equipped with a camera to visualize the conditions on site.
TECHNICAL DATA
GENERAL
- Dimensions 272 x 153 x 186 mm (1 bracket for pipe with Ø 30 mm)
- Total weight 1.55 kg
- Protection class IP 68
- Power supply 6 … 30 V DC
- Power consumption 1.5 Ah per day (for a measurement interval of 60 s)
- Operating temperature -35° … 60° C
- Storing temperature -40° … 60° C
- Protection over voltage protection, reverse power protection, lightning protection
LEVEL MEASUREMENT
- Measuring range 0.05 … 8 m (0.16…26.25 ft)
- Radar frequency 80 GHz (W-band)
- Beam angle 8
- Near field blanking 0.05 m
- Resolution ≤ 2 mm
VELOCITY MEASUREMENT
- Measuring principle Doppler-radar
- Measuring range 0.08 … 16 m/s (depending on flow conditions)
- Accuracy +/- 0.01 m/s; +/- 1 % FS
- Resolution 1 mm/s
- Direction recognition +/-
- Measuring duration 5 … 240 sec.
- Measuring interval 8 sec. … 5 h
- Measuring frequency 24 GHz (K-Band)
- Radar opening angle 12°
- Distance to water surface 0.05 … 35 m (0.16…114.83 ft)
- Required minimum swell 3 mm
AUTOMATIC VERTICAL ANGLE COMPENSATION
- Accuracy +/- 1°
- Resolution +/- 0,1 °
INTERFACES
- Analogue outputs 2 x 4 … 20 mA
- 1 x water level
- 1 x flow rate or flow velocity
- Pulse output pulse per volume (selectable units)
- Digital Interfaces 1 x SDI-12; 1 x RS 485 or Modbus
- Transfer rate: 1.2 to 115,2 kBd
- Protocol: various ASCII-protocols
- Output: discharge, flow velocity, water level, quality parameter
