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 |
|---|---|
| Measurement method | 2-electrode contacting |
| Conductivity range | 0 – 200 mS/cm |
| Cell constant (K) | K = 1.0 (cm⁻¹) |
| Accuracy | ±1% of reading |
| Temperature measurement | Integrated Pt1000 / Pt100 |
| Operating temperature | 0 – 130 °C |
| Pressure rating | ≤ 10 bar |
| Output signal | RS485 Modbus RTU via M12 5-pin A-coded connector |
| Body / wetted materials | PEEK body, platinum electrodes, FFKM O-rings, 316 stainless M12 head |
| Process connection | 3/4″ NPT threaded |
| Ingress protection | IP68 |
| Cable | M12 A-coded connector |
| Warranty | 12 months, Australian-backed |
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. 3A certification available on request.
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
- KCl calibration solutions (1413 µS/cm, 12.88 mS/cm, 111.8 mS/cm) stocked locally
- Replacement electrodes and O-rings for extended service life — dispatched same business day ex Brisbane
- Next-day delivery across Australia for stock items; 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.
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