The Panametrics 703-1161 is a high-precision internal power supply module designed for ultrasonic flow meters and gas analyzers, providing regulated DC power to the main processing electronics and transducer firing circuits.
Core Features
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High-stability voltage regulation for sensitive ultrasonic measurements.
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Integrated EMI/RFI filtering to prevent signal interference.
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Robust short-circuit and over-voltage protection.
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Modular “plug-in” design for simplified field maintenance.
Technical Parameters
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Input Voltage: 100-240 VAC or 12-28 VDC (model specific).
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Output Voltages: Multi-rail DC outputs (+5V, ±15V).
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Power Output: 20W to 40W nominal.
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Efficiency: High-efficiency switching topology.
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Isolation: 2500V input-to-output.
Specifications
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Model ID: Panametrics 703-1161 Replacement PCB.
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Compatibility: XMT868, PT878, and DigitalFlow series.
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Mounting: PCB standoffs or slot-mount.
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Connection: Pin-header or terminal block interface.
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Cooling: Natural air convection.
Application Areas
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Ultrasonic liquid flow meters (XMT868i).
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Flare gas and steam flow measurement systems.
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Portable ultrasonic flow measurement (PT878).
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Industrial process gas analyzers.
Q&A
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Q: Is the 703-1161 interchangeable with the 703-1161-02?
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A: Yes, they are typically functional equivalents; however, checking the revision suffix ensures compatibility with specific motherboard connectors.
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Q: What is the most common sign of power supply failure in Panametrics meters?
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A: A blank display, intermittent rebooting, or “Transducer Error” messages caused by unstable firing voltages.
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Q: Can this board be repaired at the component level?
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A: While possible, full board replacement is recommended to maintain the factory calibration and safety certifications of the flow meter.
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