Comparison with SmartReader Plus 6
The SRX6 builds on a long line of ACR thermocouple loggers, including the original SmartReader 6 (SR6) and its successor, the SmartReader Plus 6 (SRP6). While the SR6 is now obsolete, it laid the foundation for improved resolution, memory, and configurability found in the SRP6 and SRX6.
This section compares the most relevant technical differences between the SRP6 and SRX6, highlighting how the SRX6 maintains core functionality while improving usability, accuracy, and data access.
Comparison Table
| Feature | SmartReader Plus 6 (SRP6) | SRX6 (Current Model) |
|---|---|---|
| Resolution | 12-bit (1 in 4096) | 16-bit (1 in 65,536) — significantly improved |
| Thermocouple Channels | 7 external (internal ref used for cold-junction) | 7 external (internal ref used for cold-junction) |
| Cold Junction Compensation | Yes (via internal thermistor) | Yes (via internal thermistor) |
| Sampling Rates | 25/sec to 8 hours (fast requires power pack) | Once every ten seconds to once a day; includes delayed start and spot/averaged sampling; fast sampling support dropped |
| LED Alarms | No | Yes — two-stage visual alarms |
| Memory Capacity | Up to 1.5 MB (~1 million readings) | One million readings standard |
| Battery Life | Approx. 10 years (typical conditions) | Still ten years, but with increased battery capacity (see below) |
| Battery Capacity | One 3.6 V Lithium battery | Increased capacity; Two 3.6V Lithium Thionyl Chloride cells; ~4800 mAh (2400 mAh per cell) |
| Accuracy | ±0.5% + resolution | Higher precision — see specifications |
| Thermocouple Type Temperature Ranges | Ranges specified per thermocouple type; no distinction between supported and recommended limits | Broader supported ranges across most types, with clearly defined recommended ranges for optimal accuracy |
| Software Compatibility | TrendReader 2; TrendReader TRX Basic and Pro versions | TrendReader TRX Basic and Pro versions |
| USB Interface | Proprietary IC-102 cable (requires custom circuitry; higher cost and limited availability) | Standard USB to Mini-B cable (off-the-shelf, low-cost, and widely available) |
| Enclosure | Noryl® (PPO + polystyrene blend, good stability and electrical properties) | Sabic Cycoloy™ C2950 (PC+ABS blend with improved impact strength, flame resistance, and toughness) |
| Size | 107 × 74 × 22 mm | Slightly larger (approx. +25% in volume) |
| Networking Support | Supported via optional modules | Not currently supported; planned for future release. Contact ACR for details and timeline. |