Product details
M12 Digital PVC-Body Conductivity Sensor — Chlorinated & Mild Acid Service
The InstroDirect IDC-M12-PVC M12 Digital PVC Chemical-Resistant Conductivity Sensor is a chemical-resistant two-electrode conductivity probe with a PVC body and M12 stainless connector head. Rated for chlorinated pool / spa water, mild acids and alkalis, and chemical dosing loops where 316 stainless would corrode. The blue PVC body is rated for continuous immersion and the M12 head simplifies panel integration.
Technical Specifications
| Parameter | Specification |
|---|---|
| Measurement method | 2-electrode contacting |
| Conductivity range | 0 – 100 mS/cm |
| Cell constant (K) | K = 1.0 (cm⁻¹) |
| Accuracy | ±1.5% of reading |
| Temperature measurement | Integrated Pt1000 / Pt100 |
| Operating temperature | 0 – 60 °C |
| Pressure rating | ≤ 4 bar |
| Output signal | RS485 Modbus RTU via M12 5-pin A-coded connector |
| Body / wetted materials | PVC body, graphite electrodes, EPDM 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
- Swimming pool and spa chlorination monitoring
- Chemical dosing loops (acid, caustic, hypochlorite)
- Cooling tower water treatment
- Plating and rinse tank pre-dilution
- Reclaimed water and greywater systems
Why Integrators Choose the IDC-M12-PVC
- PVC body is immune to free chlorine that pits 316 stainless
- EPDM O-rings handle oxidising pool chemistries
- M12 head keeps electronics dry above the water line
- Digital RS485 output eliminates analog noise from dosing pump VFDs
- Cheaper than PEEK — sized for commercial pool / spa operators
Installation & Calibration Notes
Install in a bypass sample line downstream of the chlorine dosing point. Calibrate monthly with 12.88 mS/cm KCl. For continuous chlorinated duty replace EPDM O-rings every 12 months.
Frequently Asked Questions
What is the maximum free chlorine this handles?
PVC body tolerates up to 10 ppm free chlorine continuously. Above 20 ppm, use the PEEK-body alternative (IDC-M12-PEEK).
Is this suitable for drinking water?
The PVC and EPDM materials are generally AS/NZS 4020 compliant but pool-grade. For certified potable water contact, order the IDC-2W-SS-C or IDC-2W-SS-H variants.
Can it measure saltwater pool conductivity?
Yes. Saltwater pools typically run 4–6 mS/cm, well within range.
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.
There are no reviews yet.