Product Overview
When sensor poisoning or glass cracking jeopardizes process control, the Emerson 389-01-12-55 Rosemount pH/ORP sensor delivers exceptional reliability. Built with a rugged Tefzel body and Viton O-rings, it provides superior chemical resistance. The triple junction reference extends sensor life by protecting against poisoning ions such as ammonia, chlorine, cyanides, and sulfides. The cracking-resistant glass electrode ensures stable performance in high pH applications.
- Triple junction reference extends sensor life
- Cracking resistant glass for enhanced durability
- Rugged Tefzel body with Viton O-rings
- 1-inch MNPT process connections front and rear
- Variopol VP8 cable option for quick release
- Integral SMART preamplifier for calibration storage
Industry Applications
The Emerson 389-01-12-55 excels in chemical processing, wastewater treatment, and other harsh environments where sensor longevity is critical. Its robust design resists aggressive chemicals and prevents failure due to poisoning. This sensor covers the complete pH scale and a wide ORP measurement range, making it versatile for many industrial processes.
Installation Guide
Install the Emerson 389-01-12-55 easily using its 1-inch MNPT connections. The molded body allows mounting in insertion, submersion, or flow-through configurations. Choose the Variopol VP8 connector for tool-less cable changes. The sensor can be pre-calibrated with compatible Rosemount transmitters for plug-and-play field installation.
Maintenance and Reliability
Routine maintenance is simplified by automatic sensor recognition and stored calibration data in the integral SMART preamplifier. The triple junction design reduces replacement frequency, lowering total cost of ownership. Regular inspection of O-rings and electrode condition ensures continued performance. The Emerson 389-01-12-55 is engineered for long service life in demanding conditions.
Compatibility and Integration
The Emerson 389-01-12-55 works seamlessly with Rosemount transmitters such as models 56, 1056, 1057, 1066, and 5081 when using the appropriate preamplifier cable code. The integral SMART preamplifier stores pH calibration data, enabling quick replacement without manual recalibration.
Selection Guide
When ordering the Emerson 389-01-12-55, verify the cable length and preamplifier configuration to match your transmitter. Contact UBEST Automation for assistance with selecting the correct model for your application. We stock this sensor and can advise on accessories such as mounting hardware and extension cables.