HACH SONATAX Sludge blanket monitor (ultrasonic)

Sludge blanket monitor (ultrasonic)

HACH SONATAX

Sonatax sc sludge blanket level analyzer (ultrasonic sludge level meter) features built-in temperature compensation, can detect up to 12 m deep tanks, provides timely alarms, automatic cleaning, and connects to the sc controller to support multiple probe connections. It is a sludge blanket level meter suitable for wastewater treatment and waterworks.

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Principle of Operation

The Sonatax sc sludge blanket analyzer (ultrasonic sludge level meter) uses the echo signal from an ultrasonic pulse to measure the sludge blanket level, and determines the height and thickness of the sludge layer by calculating the time for the ultrasonic wave to return to the probe.

Typical Applications

The Sonatax sc sludge blanket analyzer (ultrasonic sludge level meter) can be used in applications requiring monitoring of the solid-liquid interface, sludge blanket determination in primary clarifiers, secondary clarifiers, and sludge thickening tanks in wastewater treatment plants; sludge level determination in sedimentation tanks of water treatment plants.

Features and Benefits

The Sonatax sc sludge blanket analyzer (ultrasonic sludge level meter) uses the ultrasonic measurement principle, with automatic temperature compensation, for accurate measurement.
The sludge blanket analyzer/sludge level meter can measure tanks up to 12 meters deep.
The sludge blanket analyzer/sludge level meter features an automatic alarm function to avoid sludge loss.
The sludge blanket analyzer/sludge level meter features automatic calibration, magnetic self-cleaning, and low maintenance.
The Sonatax sc sludge blanket analyzer (ultrasonic sludge level meter) can be connected to the sc controller, with multiple sensors connected.
The Sonatax sc sludge blanket analyzer (ultrasonic sludge level meter) is suitable for sludge blanket determination in primary clarifiers, secondary clarifiers, and sludge thickening tanks in wastewater treatment; sludge level determination in sedimentation tanks of water treatment plants.

Technical Specifications

Measuring range: 0.2～12m
Resolution: < 0.04m
Accuracy: 0.1m ± 0.05m
Response time: 10～600s (adjustable)
Calibration: Only required once at startup; automatic
Pressure range: ≤ 0.3bar
Ambient temperature: 0～50℃
Temperature compensation: Automatic compensation
Protection class: IP68
Flow velocity requirement: ≤ 3m/s
Dimensions: 130mm × 185mm (H × D)
Weight: Approx. 3.5Kg
Maintenance: Routine < 1 hour / month
Cable length: 10m, extendable by at least 100m
Controller: sc200 model or sc1000

Ordering Guide

2976300 Includes one SONATAX sc probe, swivel-mount installation accessory, and sc200 standard controller
2976200 Includes one SONATAX sc probe, swivel-mount installation accessory, and sc200 standard controller with RS232/RS485 output
2976100 Includes one SONATAX sc probe, swivel-mount installation accessory, and sc200 standard controller with Profibus DP
For other ordering information about the sc200, please refer to the sc200 ordering instructions

Individual Ordering

LXV431.99.00002 1 SONATAX sc sludge blanket probe
57730-00 1 SONATAX sc sludge blanket probe, with swivel-mount installation accessory

Accessories

LZX328 Probe wiper blade, for replacement only, 5 per pack
LZX414.00.70000 Probe fixed mounting bracket
LZX414.00.71000 Probe swivel-mount bracket
LZX414.00.73000 Probe railing-mount bracket
When ordering the railing-mount assembly, be sure to order one of the following components together:
LZX414.00.70000 or LZX414.00.71000 !!!

Cable Accessories

57960-00 7.6 m (25 ft.) extension cable
57961-00 15.2 m (50 ft.) extension cable
57962-00 30.5 m (100 ft.) extension cable

Source: Public information from the HACH Water Quality website

Municipal Wastewater Treatment

Municipal Wastewater Treatment · Controllers and Sensors — Application Case

Site Conditions

This is a Municipal Wastewater Treatment customer whose plant is at the inlet, biological and outlet stages of a municipal plant. The main task was online water monitoring with a controller and sensor combination.

The Problem

The difficulty lies in high solids and corrosive fractions, with large diurnal flow swings; at the same time effluent parameters drift and probes foul with sludge and biofilm. Specification therefore means matching each controller channel to its sensor type.

What We Did

We took a Hach channel approach — supplying against the Hach original part numbers. Delivery was built around matching each controller channel to its sensor type, with point-by-point checks on: stable compliance with Grade 1A discharge limits and online data reporting.

Operating Outcome

In service the system performs as intended — factory-matched combinations that make faults easier to locate, with routine maintenance falling noticeably.

Food & Beverage

Food & Beverage · Controllers and Sensors — Application Case

Application Context

dosing, pasteurising, filling and CIP stages is a typical Food & Beverage duty. The project started from Controllers and Sensors, focusing on online water monitoring with a controller and sensor combination.

Process Constraints

frequent cleaning demands instruments that withstand hot CIP/SIP caustic cycles, and syrups, dairy and beverages that scale easily, under strict hygienic requirements only amplify it. The Controllers and Sensors specification must therefore cover matching each controller channel to its sensor type.

Delivery Approach

Delivery was handled as the Hach channel — supplying against the Hach original part numbers. Execution centred on matching each controller channel to its sensor type, together with food-safety and hygienic design per 3-A / EHEDG.

Field Results

Operation shows the benefit clearly — factory-matched combinations that make faults easier to locate, with confidence in this measuring point improving markedly.

Chemical & Pharmaceutical

Chemical & Pharmaceutical · Controllers and Sensors — Application Case

Customer Profile

The typical setting in Chemical & Pharmaceutical is reactors, metering vessels and finished-product tanks. The measuring point is Controllers and Sensors; the focus is online water monitoring with a controller and sensor combination.

Key Difficulties

Conditions are highly corrosive media with solvents and crystallisation, partly in explosive atmospheres and, on top of that, corrosion plus Ex protection shortens instrument life and makes downtime costly, which a standard configuration cannot handle for long. The design therefore starts with matching each controller channel to its sensor type.

Implementation

The scope ran through the Hach channel: supplying against the Hach original part numbers. Technically it hinges on matching each controller channel to its sensor type, and on these requirements: Ex certification and GMP traceability of records.

Customer Benefit

In practice this means factory-matched combinations that make faults easier to locate, which cut the workload on the site maintenance team.

Power & Energy

Power & Energy · Controllers and Sensors — Application Case

Project Background

The project covers boiler feedwater, turbine condensate and FGD/DeNOx systems. The work centres on Controllers and Sensors and the core task is online water monitoring with a controller and sensor combination.

Operating Challenges

The medium and duty are characterised by high temperature and pressure with both steam and saline water, and drift under high temperature and pressure, with very costly unplanned outages. So Controllers and Sensors cannot be specified generically — it calls for matching each controller channel to its sensor type.

Solution

The Ainstru engineering team worked through the Hach channel: supplying against the Hach original part numbers. The configuration involves matching each controller channel to its sensor type, with these requirements in view: compliance with power-industry codes and unit availability targets.

Results

Since start-up the system has run steadily; the practical result is factory-matched combinations that make faults easier to locate.

HACH

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SONATAX Sludge blanket monitor (ultrasonic)