Description
The KROHNE SMARTPAT PH 1590 is a two-wire digital pH sensor for potable, process and treated-water measurement. Its integrated transmitter provides a direct 4–20 mA/HART 7 connection, so the measuring point can be engineered without a separate analytical transmitter when the host system and loop design are compatible.
Verified technical overview
| Measured parameter | 0–14 pH |
|---|---|
| Signal | 2-wire loop powered, 4–20 mA with HART 7 |
| Process connection | 3/4 NPT male |
| Published process limits | Maximum +80 °C / +176 °F and 6.9 bar / 100 psi |
| Sensor construction | CPVC body, ceramic diaphragm and integrated Pt1000 temperature element |
Engineering selection checklist
| Measurement duty | Normal, minimum and maximum value; control, monitoring or compliance objective |
|---|---|
| Process conditions | Medium chemistry, conductivity, temperature, pressure, solids and coating tendency |
| Installation | Inline, flow-through or immersion assembly; connection, insertion length and maintenance access |
| Electrical interface | Loop power, 4–20 mA scaling, HART host compatibility, cable and hazardous-area needs |
| Order validation | Confirm sensor version, materials, approvals, assembly and accessories in the current KROHNE documents |
Industry application guidance
Use this model for water-treatment loops where a rugged plastic-bodied sensor and direct HART connection simplify the measurement point. Confirm sample conductivity, immersion or inline mounting, cable arrangement, cleaning access and the host system's loop power and HART support.
Related products and engineering resources
- Analytical Instruments
- KROHNE Products
- Water & Wastewater Instrumentation
- Chemical Industry Instrumentation
- Beverage Analysis Instrumentation Guide
Official manufacturer documentation
Official KROHNE SMARTPAT PH 1590 product page · Official KROHNE technical data sheet
Published values above apply to the stated model and may depend on version, cell constant, materials, temperature, pressure and order code. Confirm the complete configuration and current manufacturer documentation before purchase. No availability, price, project, approval or performance claim is implied.
Request a quotation
Send the model, process conditions and required configuration to sales@santanfluid.com, WhatsApp China +86 136 9022 3185 or WhatsApp Indonesia +62 823 1767 3750.
Standard Technical Specification Summary
Use these fields for preliminary selection. Final values depend on the complete manufacturer model code and selected options.
| Model | KROHNE-SMARTPAT-PH-1590 |
|---|---|
| Measurement Range | Configuration-dependent; confirm the required span and complete model code. |
| Accuracy | Configuration-dependent; confirm the accuracy class and calibrated range. |
| Process Connection | 3/4 NPT male |
| Output Signal | Configuration-dependent; confirm analog, digital and communication requirements. |
| Certifications | Confirm hazardous-area, functional-safety, sanitary, marine or custody-transfer approvals by model code. |
| Application Industries | Application-dependent; confirm medium, process conditions and industry requirements. |
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