#
WattNode^{®} LonWorks Power Meters w/ Logger

AC Power Measurements and Loggingfor LonWorks Networks: Real Power (kW) & Energy (kWh) Net Metering Reactive Power (VAR) Power Factor Individual Phase Measurements |

### WattNode Logger for LonWorks

The WattNode Logger is a kilowatt hour (kWh) energy meter that communicates on a LonWorks network, and can log 24,000+ measurement records in non-volatile memory. The WattNode Logger measures 1, 2, or 3 phases with voltages from 120 to 600 volts alternating current (Vac) and 5 to 6,000 amps in delta (line-to-line) and wye (line-to-neutral) configurations.

**Specifications****Models & Pricing****Downloads****Options****WattNode Revenue for LonWorks****WattNode Plus for LonWorks**

### Measurements

- Net Real Energy: kilowatt-hours - kWh (Phase A, B, C, sum of all phases)
- Positive Real Energy: kilowatt-hours (sum of all phases)
- Bidirectional Real Power: Watts (Phase A, B, C, and sum of all phases)
- Reactive Power: VARs (Phase A, B, C, and sum of all phases)
- Power Factor: PF (Phase A, B, C, all phases)
- Reactive Energy: kVAR-hours (All Phases)
- AC Frequency
- RMS Voltage: (Phase A, B, C)
- Computed RMS Current: (Phase A, B, C)
- Demand
- Peak Demand

### Quantities Logged

- Date and Time
- Net Energy (A, B, C and Sum)
- Reactive Energy (Sum)
- Positive Energy (Sum)
- Real and Reactive Power (A, B, C and Sum)
- Voltage, Current and Power Factor (A, B, C)
- Demand

### Features

- Logging intervals from 1 minute to 12 hours, allows logging up to 250 days of 15-minute data
- Supports LonWorks TP/FT-10 free topology twisted-pair network using Echelon’s
^{®}LonTalk^{®}(ANSI/CEA-709.1-B-2002) network protocol. - LonMark 3.4 Certified
- Small form factor for easy installation inside most electrical panels, see a sample installation diagram.
- Pluggable screw terminals for easy wiring
- 0.5% nominal accuracy (see manual for details)
- True RMS power even with leading or lagging power factor and chopped or distorted waveforms
- Monitors variable speed drives, pumps, and motors
- Safe CT's (current transformers), output 0.333 Vac at rated current.
- Split core CTs for quick installation
- Solid core CTs are less expensive and prevent tampering
- Custom and standard Bus Bar sized CTs

**Assembled in USA**, qualified under the Buy American provision in the American Recovery and Reinvestment Act of 2009 (ARRA).- Five year warranty

### Safety Note

**Warning: Hazardous Voltages** - Only qualified personnel or licensed electricians should install the WattNode meter and current transformers.

**Keywords:** ANSI 709.1, ANSI/CEA 709.1, EIA 709.1