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Product Highlights
Product Details
PMT140 measures the electrochemical potential of pH, ORP (oxidation-reduction potential), and ISE (ion-selective electrode) probes. Temperature is measured simultaneously and compensation is applied automatically, ensuring accurate readings across varying process conditions.
The transmitter covers a measurement range of −2000 to +2000 mV and 0 to 14 pH. Accurate temperature compensation is provided via a Pt1000 integrated directly into the probe. Calibration is straightforward and automatic, supporting both standard and custom buffer solutions.
PMT140 offers flexible configuration and operation options. It can be accessed and configured wirelessly via Bluetooth using the EliarSmart mobile application, or remotely through Wi-Fi and an embedded web server. Wiring and commissioning are simplified by the M12 connector.
A wide selection of probes and process accessories is available to suit different temperature ranges and operating conditions.
Commissioning and configuration are simplified through the EliarSmart mobile application, enabling fast setup, parameter adjustment, and diagnostics without direct physical access. Wi-Fi communication capability reduces cabling requirements and supports flexible system integration, particularly in distributed or hard-to-reach installations.
Ideal for:
• Textile dyeing and high-temperature dye bath applications
• Water and wastewater treatment: neutralisation, chemical dosing, and process water monitoring
• CIP systems: cleaning solution concentration monitoring and rinse completeness verification
• Cooling water monitoring and heat exchanger / condenser leak detection
• Hygienic applications in food, beverage, and pharmaceutical industries
• pH / ORP control in chemical processing and industrial automation
| Measurement Principle | Potentiometric (pH / ORP / ISE) |
| Number of Channels | 1 (single channel) |
| pH Measuring Range | 0–14 pH |
| mV Measuring Range | -2000 to 2000 mV |
| Measurement Accuracy | ± 0.5% |
| Repeatability | 0.2% |
| Temperature Compensation | Automatic, manual |
| Reference Temperature | 15–30 °C (25 °C default) |
| Temperature Sensor | Pt1000 |
| Temperature Range | -20 to 140 °C |
| Temperature Accuracy | ± 0.3 °C |
| Temperature Repeatability | 0.1 °C |
| Response Time (t90) | < 3 s |
| Analog Outputs | 2× 4–20 mA, electrically isolated, 12-bit, 500 ms sampling |
| Analog Output Accuracy | ± 0.3% |
| Maximum Load Impedance | 600 Ω |
| Switch Outputs | SSR 1: 100 mA @ 24 VDC · SSR 2: 200 mA @ 24 VDC |
| Digital Input | Sinking, IEC 61131-2 Type-3, 7 mA @ 24 VDC |
| Wireless | Wi-Fi and Bluetooth |
| Power Supply | 18–30 VDC, max 3 W @ 24 VDC |
| Reverse Polarity Protection | Yes |
| Electrical Connection | M12, A-Coded, 4-pin, male |
| Display | TFT-LCD, 2.8", Resistive touch |
| Display Window | PET |
| Enclosure | PA6-GF15 |
| Seals | EPDM, TPE, NBR |
| Ambient Temperature | 0 to 55 °C |
| Protection | IP67 (IEC 60529) |
| EMC | IEC 61326, Class B |
| Environmental Testing | IEC 60068 |
| Weight | Approx. 0.25 kg |
Wiring and integration notes.
Need a custom configuration? Talk to our engineers.
Process specialists respond to technical enquiries within one business day.
