
Hanna Instruments HI-7638/10 Submersion Conductivity Sensor
EC/TDS probe, ATC with NTC sensor for immersion installation. The wide range of Hanna conductivity probes includes models for industrial applications. Flow-through and dip versions are available.
HI-7638/10 Submersion Conductivity Sensor
- Four-ring probes measure conductivity with platinum sensors.
- Built-in temperature sensor for Automatic Temperature Compensation.
- Built for everyday, demanding use in industrial applications.
The conductivity probe combines the proven 4-ring potentiometric method of measuring conductivity with platinum sensors. The universally acclaimed 4-ring method provides a more stable measurement over a wider range. The probe does not suffer polarisation, nor does it need frequent calibration or cell changes.
In addition, the built-in temperature sensor allows automatic temperature compensation of measurements.
Designed for easy operation and maintenance, the 10m (33 feet) cable with colour-coded wires assists with quick connection to the HI-8936 transmitters.
Key features
- In-line conductivity probe - Suitable for direct immersion in pipes.
- Four-ring method - Provides an exceptionally stable measurement over a wider range. These probes do not suffer polarisation, nor do they need frequent calibration or cell changes.
- NTC sensor - Provide accurate and effective temperature compensation.
- Colour coded wires - Variety of cable lengths incorporating colour coded wires for easy connection to transmitters.
- Platinum sensor - Provides the best response over a wide range of applications.
- PEI body - PEI bodied electrodes are rugged and suitable for non-critical applications that require a very good combination of chemical, mechanical, and thermal resistance.
Specifications
| Body Material | PEI, glass |
| Glass type | GP - 0 to 120°C (32 to 248°F) |
| Matching Pin | No |
| EC/TDS Temperature Compensation Range | automatic, 0 to 50°C |
| Temperature Sensor Type | NTC Sensor |
| Max. Pressure | 5 bar (72.5 psi) |
| Connector Type | Colour coded wires |
| Amplifier | No |

Frequently Asked Questions
Clear answers to help you choose the right water testing solution with confidence
Which brands of water testing kits do you supply?
Do you provide kits for both home and professional use?
Yes — whether you’re a pool or spa owner, aquarium keeper, utility company, or a university laboratory, we have the right solution for your needs.
Can I arrange servicing or calibration for my photometer?
Absolutely. We also provide servicing and calibration to keep your photometers accurate and reliable.
How quickly do you dispatch orders?
Orders placed before 2:30 pm (Monday–Friday) are dispatched the same day. We also ship on Saturdays for your convenience.
Which couriers do you use for delivery?
We deliver through UPS, DPD, and Royal Mail. You can also choose to upgrade to next-day delivery at checkout.
What is your return policy?
We accept returns within 14 days of delivery provided the items are unused, in their original packaging, and in resalable condition. Please contact our team before returning any items.
Can I place bulk or business orders?
Yes, we welcome bulk, trade, and institutional orders. For tailored pricing or large quantities, please get in touch with us directly.
How can I get help if I’m unsure which kit to buy?
You can call us at 📞 +44 (0)115888 2726 and our team will guide you in choosing the most suitable kit for your needs.