Suspended Solids / Turbidity Probe with Self-Cleaning Wiper

Self-Cleaning Suspended Solids & Turbidity Probe — Wiper Equipped

The InstroDirect IDTB-SS-W Suspended Solids / Turbidity Probe with Self-Cleaning Wiper is a heavy-duty suspended solids and turbidity probe designed for activated sludge and process water where a non-wiping optical sensor would foul within hours. A mechanical wiper sweeps the optical window on a user-configurable cycle (typically every 15 minutes), so the probe delivers drift-free readings in MLSS up to 30 g/L without daily manual cleaning.

Technical Specifications

Typical Australian Applications

• Activated sludge MLSS monitoring in aeration basins
• Secondary clarifier sludge blanket measurement
• Digester feed solids control
• Industrial wastewater suspended solids compliance
• Pulp and paper process water
• Mining tailings and slurry monitoring
• Food & beverage effluent screening

Why Integrators Choose the IDTB-SS-W

1. Mechanical wiper eliminates the weekly manual cleaning cycle that every non-wiping probe demands in activated sludge
2. Dual-range firmware outputs both turbidity (NTU) and suspended solids (mg/L) on separate Modbus registers
3. 30 g/L upper range covers even the heaviest MLSS in digester feeds
4. 316 stainless body and sapphire windows survive WWTP chemistries long-term
5. Replacement wiper blades and optical window kits stocked locally in Brisbane

Installation & Calibration

Submerge in the aeration basin or install through a 3/4″ NPT pipe boss in a process line. Configure the wiper interval based on fouling observations (start at 15 minutes and adjust). Calibrate both turbidity and SS channels on-site against a grab-sample laboratory TSS analysis. Replacement wiper blades are a 60-second swap without removing the probe from service.

Frequently Asked Questions

How often do I need to replace the wiper blade?

Typically every 6–12 months depending on duty cycle and water abrasiveness. Blade swap is a 60-second on-site procedure.

Can this replace a laboratory TSS analysis?

For process control and trending, yes. For regulatory compliance reporting, calibrate the probe against lab TSS regularly (monthly) and treat the probe as a continuous monitoring instrument backed by lab verification.

Is there a lower-cost version without the wiper?

Yes — see IDTB-IL-316 (Inline Optical Turbidity Sensor) for clean-water applications without fouling.

Will it work in primary sedimentation tanks?

Yes, but at the upper end of the range (10–30 g/L). Position the probe at a stable depth in the sludge layer and configure the wiper to 5-minute intervals during high-flow events.

Australian Technical Support, Calibration & Consumables

• Brisbane-based phone & email technical support from field engineers with 20+ years automation experience
• On-site calibration service across QLD, NSW, VIC with calibration certificate
• Reagents and consumables stocked locally — DPD for free chlorine, formazin for turbidity, all pH and conductivity standards
• Replacement sensors, O-rings, and fittings dispatched same business day ex Brisbane
• Trade pricing for integrators, councils, water utilities, pool & spa contractors

Request a Trade Quote

Panel builders, system integrators, council water departments, water utilities, and food & beverage engineers get volume trade pricing. Submit a quote request and we’ll respond within one business day with stock, pricing, and lead time.