SRX3 Smart Reader
Engineered to support a wide range of applications critical to the electrical industry:
The SRX3 AC Current Data Logger is designed for long-term recording of electrical load profiles across single- or three-phase systems. By capturing current usage over time, it allows users to analyze trends, perform load studies, and verify circuit or equipment capacity. The logger and its clamp-on current probes operate as a completely self-powered system, eliminating the need for external power supplies, voltage taps, or auxiliary wiring. Its compact design allows the logger to be easily installed inside electrical panels and other tight spaces. ACR’s clamp-on probes — available in 10 A, 25 A, 50 A, 250 A, 500 A, and 1000 A ranges — allow current (amps) to be recorded without shutting down equipment, disconnecting conductors, or disturbing wiring, making installation fast, safe, and non-intrusive. The SRX3 is ideal for energy audits, equipment monitoring, HVAC diagnostics, and electrical capacity assessments.
Flexible by Design
Each SRX3 supports up to seven analog inputs, allowing simultaneous monitoring of three-phase current plus auxiliary signals such as temperature, pressure, or voltage. Configurable equations in TrendReader TRX Software let users scale readings into engineering units (including amps and derived values) and generate ready-to-share reports in CSV, XLS, or PDF format.
- Ability to connect to a wide range of sensors to deliver a customized integrated solution with outstanding functionality
- Capable of storing up to 1 million readings
- Flashing LED alarm lights
- Two-stage alarming (warning and critical)
- 16-bit resolution provides greater precision
- Can be calibrated to NIST standards to achieve the highest possible measurement accuracy
- Portable equations onboard the data logger ensure faster downloads and collaboration with less user intervention
- One-button report generation
- Wizards for Custom Equations and logger configuration for ease of use
| Alarm Connector | Critical and Warning connections Maximum 15V Maximum 350mA |
| Battery | 3.6V Lithium Typical battery life: 10 years under normal operating conditions @ 25°C |
| Channel 0 - Internal Temp | Resolution: 0.01°C Range: -40°C - 85°C Accuracy: ± 0.3°C (0C to 70C) Accuracy: ± 1°C (-40C to 85C) |
| Channels 1 to 7 - DC Voltage | Input Impedance: ~ 1 Megohm Resolution: 16-bit Range: 0 – 5V DC Accuracy: ± 0.5% Full Scale |
| Clock Accuracy | ± 1 seconds per day |
| LED Status & Alarm Lights | High & Low thresholds per channel Latch / Self-reset |
| Memory Size | 1 Million Readings |
| Operating Limits | -40°C to 85°C (-40°F to 185°F) 0 to 95% RH non-condensing |
| Sample Rates | 10s to 24 hours (normal mode) 50 ms to 10 s (powered fast mode) |
| Sampling Methods | Continuous (first-in-first-out) / Stop when full Immediate start / Delayed start - up to 2 months Spot / Averaged Readings |
| Size | 111 mm (4 3/8") x 74mm (2 15/16") x 27 mm (1 1/16") |
| Status Indicator | Flash rate: 10 seconds Green: logging Blue: delayed start Yellow: alarm warning Red: critical alarm Magenta: memory full |
| Warranty | 3 Years |
| Weight | 140g (5 oz) |
- Energy Audits – Profile real-world energy consumption and identify efficiency opportunities
- 30-Day Load Studies – Record current (amperage) over time to support system design, demand analysis, or capacity planning
- HVAC Testing & Balancing (TAB) – Measure all three phases of fan or pump motors to confirm loading, detect imbalance, and correlate electrical draw with airflow or pressure data
- Startup & Long-Term Equipment Analysis – Track current behavior during commissioning and ongoing operation to detect anomalies before they become failures
- Plug Load & Lighting Circuits – Assess the performance and duty cycle of smaller loads, from office equipment to lighting banks
- Compressor & Motor Monitoring – Verify actual operating loads against nameplate ratings
- Baseline & LEED Studies – Collect traceable current data to support sustainability documentation
ACR SystemsTrendreader TRX Software
Software for SRX2
This product is no longer available. Contact us at 800-567-8686 for alternative solutions.