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
Wide operating range — up to 200 °F and 230 PSI for reliable performance under varied conditions. istec-corp.com
Precise sensors — uses platinum RTD (PT500) for accurate temperature measurement. istec-corp.com
Flexible flow range — from low flow (0.2 GPM) to maximum 22 GPM, with continuous flow capability at 11 GPM. istec-corp.com
SmartSlot interface — options for communication modules (such as M-bus), SmartCard/ChipCard download, manual read via LCD. istec-corp.com
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
Ideal for hydronic heating/cooling systems to measure energy usage and transfer in water loops.
Tenant or building sub-metering for fair billing and energy tracking.
Facility managers seeking precise, reliable measurement for trend-analysis and performance optimization.
Environments where durable, low-maintenance energy meters are required.
Installation & Best Practices
Mount in a location that allows easy access to the display for readings.
Ensure correct flow direction installation; sensor flow path must match meter labeling.
Use proper pipe sizing and avoid sharp bends near the meter to ensure flow accuracy.
Insulate sensor leads and lines where needed to reduce heat loss and measurement error.
Periodically verify meter accuracy for drift, and replace battery before end of expected battery life.
Why Buy from Apex Controls
Authentic Istec 5201 units with verified specs and datasheets.
Competitive pricing, reliable inventory, and fast shipping.
Technical support if needed for selecting correct meter or accessories.
| Weight | 8 lbs |
|---|---|
| Dimensions | 2 × 2 × 2 in |
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