Product details
M12 Digital PEEK-Body Conductivity Sensor — Aggressive Chemical Service
The InstroDirect IDC-M12-PEEK M12 Digital PEEK Conductivity Sensor for Aggressive Chemicals is a high-temperature, chemical-resistant two-electrode conductivity probe with a PEEK (polyetheretherketone) body and 316 stainless M12 connector head. PEEK’s exceptional chemical resistance makes this the right choice for strong acids, bases, solvents, pharma process water, and semiconductor ultra-pure water where standard plastics fail within weeks.
Technical Specifications
| Parameter | Specification |
|---|---|
| Measuring range | 0 – 300 mS/cm |
| Measurement method | Four-wire conductivity (bull’s eye) |
| Temperature range | 0 – 150 °C |
| Accuracy | ≤ ±1% |
| Resolution | 0.01 µS/cm |
| Maximum withstand voltage | 20 bar |
| Electrode coefficient | 0.3 |
| Material | PEEK, 316L / Titanium alloy / Hastelloy |
| Temperature sensor | PT1000 |
| Interface type | Cab, VP6 |
| Power supply | 9 – 26 V |
| Communication method | RS485 Modbus |
| Size | Φ 12 × 165 |
| Installation method | PG13.5 |
Typical Australian Applications
- Strong acid / caustic chemical dosing
- Pharma WFI and purified water loops
- Semiconductor ultra-pure water (EC <1 µS/cm resolution)
- Solvent-based chemical process
- Nuclear and hazardous waste process monitoring
Why Integrators Choose the IDC-M12-PEEK
- PEEK handles concentrated sulphuric, nitric, and caustic at elevated temperature
- Platinum electrodes resist polarisation and chemical attack in oxidising media
- FFKM (Kalrez / Chemraz-grade) O-rings survive solvents that destroy FKM and EPDM
- 130 °C rating covers CIP / SIP and hot acid / caustic service
- M12 head keeps connector dry above aggressive process fluid
Installation & Calibration Notes
Install through a 3/4″ NPT PEEK-lined fitting to maintain chemical compatibility at the joint. For ultra-pure water service, rinse with WFI before first use. Calibration standards: 1413 µS/cm or lower for ultra-pure; 12.88 mS/cm for general process.
Frequently Asked Questions
What chemicals is PEEK NOT compatible with?
Concentrated sulphuric acid (>80%), fuming nitric acid, and some halogenated hydrocarbons at high temperature. For these, contact us for a Hastelloy or Tantalum electrode custom build.
Is this suitable for pharma WFI?
Yes — PEEK and platinum are FDA/USP Class VI compatible.
Can it measure ultra-pure water?
Yes. For EC readings below 1 µS/cm, configure the sensor in high-resolution mode (Modbus register 0x1010).
Australian Technical Support, Calibration & Consumables
- Phone and email technical support from Brisbane-based field engineers with 20+ years automation experience
- On-site two-point conductivity calibration across QLD, NSW, VIC with certificate of calibration
- Next-day delivery across Australia for ; trade pricing from 5 units
InstroDirect also stocks the full water-analysis reagent range for pH, dissolved oxygen, chlorine, ammonia, and nitrate monitoring.
Request a Trade Quote
Panel builders, system integrators, council water departments, food & beverage engineers, and pharma/process teams get volume trade pricing. Submit a quote request and we’ll respond within one business day with stock, pricing, and lead time.
Why InstroDirect vs Endress+Hauser or HACH in Australia
InstroDirect supplies the same grade of water-quality sensor that Australian councils, WWTP integrators, pharma plants, and food & beverage operators specify from Endress+Hauser and HACH — at a significantly lower landed cost and without vendor lock-in.
| Factor | InstroDirect | Endress+Hauser / HACH |
|---|---|---|
| Digital protocol | Open RS485 Modbus RTU — integrates with Allen-Bradley, Siemens, Schneider, Beckhoff, or any SCADA | Proprietary (E+H Memosens / HACH SC digital) — locked to the vendor’s transmitter |
| Technical support | Australian field engineers with 20+ years automation experience | Remote support via offshore ticket queues |
| On-site calibration | InstroDirect technicians available across QLD, NSW, VIC with formal calibration certificate | Third-party authorised service network, longer turnaround |
| Price | Parallel-import model — no distributor margin stack, typically 30–50% below equivalent brand pricing | Premium brand pricing with tiered distributor markup |
| Replacement parts | Standard consumables ordered on demand from InstroDirect | Proprietary cartridges and cells, tied to the brand |
Moving away from Memosens or SC digital protocols frees you to mix and match sensors with any Modbus-capable transmitter or PLC. InstroDirect probes drop straight into an existing control system without a new proprietary transmitter.
