The PRO ES, boasts over 13,000 records of memory. This enables sophisticated data collection projects to be accomplished with ease, and a high level of resolution. In fact, over a weeks worth of data can be collected with a resolution between records of only one minute. The sample interval (time between records) is user selectable between one second and one day. Memory is non-volatile so no battery is required. Data transfer speed has also been increased 4 times, to a baud rate of 34,800. The PRO ES version includes all the displays of the Watts up? PRO (described below), and it also comes with the same graphing software and a serial cable to interface to a PC.

Values displayed:

• Cost, in dollars and cents
• True RMS power
• Cumulative power (kwh)
• Time
• Voltage
• Current
• Average monthly cost
• Average monthly kwh
• Maximum voltage
• Maximum current
• Maximum wattage
• Power cycle (PRO)
• Power factor
• Minimum voltage
• Minimum current
• Minimum wattage
• Duty cycle

Features:

• Displays cost of electricity in dollars and cents
• Save money by lowering your electric bill
• Real time graphing of results
• True power, RMS volts and RMS current
• Sixteen values displayed, updated in real time
• Peak readings capture surges
• Duty cycle identifies how often devices operative
• Elapsed time displayed in hours and days
• Monthly averages for cost and KWH
• Cumulative power and power factor
• Data logging with up to 13,000 records
• ES version for commercial applications

Applications:

• Household lighting
• Refrigerators
• Air conditioners
• All 120 VAC household appliances

Spec Summary:

• 120 VAC, 60 Hz, 15 amps continuous
• True power, RMS volts and RMS current measured and displayed
• Accuracy is: +/- 3%, +/- 2 counts of the displayed value for loads above 10 watts
• Accuracy is: +/- 5%, +/- 3 counts of the displayed value for loads below 10 watts
• RS232 interface (PRO/ES)
• Mains supply voltage fluctuations not to exceed +/- 10% of the nominal voltage
• Input is via 6' electric cord, output is via outlet on top of meter

For UL rating

• Indoor use only
• Altitude up to 2000 meters
• Temperature 122 to 752°F (50 to 400° C)
• Installation Category II
• - Maximum relative humidity 80% for temperatures up to 590°F (310° C)
  decreasing linearly to 50% relative humidity at 752°F (400° C)
• Pollution Degree 2