Istec 5201 ¾-inch Self-Contained BTU Meter
Overview
The Istec 5201 BTU Meter is a high-precision, self-contained energy meter designed for hydronic systems, tenant sub-metering, and performance tracking. Engineered by Istec to handle up to 200 °F and 230 PSI, it supports flow rates from 0.2 to 22 GPM, making it suitable for a wide range of light commercial and residential applications. Its long-life battery, platinum RTD sensors, and SmartSlot interface for flexible communications make this meter a reliable, versatile solution
Key Features
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Wide operating range — up to 200 °F and 230 PSI for reliable performance under varied conditions. istec-corp.com
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Precise sensors — uses platinum RTD (PT500) for accurate temperature measurement. istec-corp.com
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Flexible flow range — from low flow (0.2 GPM) to maximum 22 GPM, with continuous flow capability at 11 GPM. istec-corp.com
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SmartSlot interface — options for communication modules (such as M-bus), SmartCard/ChipCard download, manual read via LCD. istec-corp.com
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Durable design — battery lasts ~10 years, lithium replaceable. istec-corp.com
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Istec |
| Model | 5201 |
| Connection / Pipe Size | ¾-inch self-contained unit (istec-corp.com) |
| Maximum Temperature | 200 °F (istec-corp.com) |
| Maximum Pressure | 230 PSI (istec-corp.com) |
| Flow Range | 0.2-22 GPM (continuous 11 GPM) (istec-corp.com) |
| Sensors | Platinum RTD (PT500) (istec-corp.com) |
| Display | LCD, 7-digit, top-mounted (istec-corp.com) |
| Power / Battery | Lithium battery CR17450, 10 yrs + reserve life (istec-corp.com) |
Applications & Benefits
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Ideal for hydronic heating/cooling systems to measure energy usage and transfer in water loops.
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Tenant or building sub-metering for fair billing and energy tracking.
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Facility managers seeking precise, reliable measurement for trend-analysis and performance optimization.
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Environments where durable, low-maintenance energy meters are required.
Installation & Best Practices
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Mount in a location that allows easy access to the display for readings.
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Ensure correct flow direction installation; sensor flow path must match meter labeling.
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Use proper pipe sizing and avoid sharp bends near the meter to ensure flow accuracy.
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Insulate sensor leads and lines where needed to reduce heat loss and measurement error.
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Periodically verify meter accuracy for drift, and replace battery before end of expected battery life.
Why Buy from Apex Controls
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Authentic Istec 5201 units with verified specs and datasheets.
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Competitive pricing, reliable inventory, and fast shipping.
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Technical support if needed for selecting correct meter or accessories.
| Weight | 8 lbs |
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| Dimensions | 2 × 2 × 2 in |
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