Watts Up Pro ES Portable Plug In Power Meter with Software & Extra Memory
Watts Up Pro ES provides lots of information yet it is simple to use. Only 6 values are displayed in the main modes. The other information is available in the detail mode. Clear English wording (not abbreviations) on the LCD is used to describe what is displayed.Watts Up Pro ES incorporates sophisticated digital electronics that enable precise and accurate measurements. State-of-the-art digital microprocessor design utilizes high-frequency sampling of both voltage and current measurements for true power.
Power factor is captured so even phase-shifted loads such as motors are accurately measured. Fast, intuitive and easy-to-use, Watts Up Pro ES quickly and accurately measures any 120V AC appliance.
This Watts Up Pro ES Monitor will provide the following information: current watts, minimum watts, maximum watts, power factor, cumulative watt hours, average monthly kilowatt hours, tier 2 kilowatt hour threshold (used to calculate secondary kWh rates), elapsed time, cumulative cost, average monthly cost, line volts, minimum volts, maximum volts, current amps, minimum amps, and maximum amps, also displays Power
cycle. Note that this monitor's watt measure displays "true power",
which factors in a device's power factor.
This model will store up to 13,000 data points, recorded with a user-selectable interval, which may be downloaded to a PC computer with the supplied PC software via a USB cable. 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. The optional software allows access to the data table, offers charting and payback analysis, and permits the export of data in a comma-delimited format.
There are two other models to choose from :
- Watts Up Standard shows data on the screen but does not have memory - you must write results down for your records.
- Watts Up Pro has memory and comes with Windows reporting software and communications cable to chart results and also logs a few more parameters than the standard. The PRO model also displays Power cycle.
All models display this information:
- Cost - in dollars and cents
- Average monthly cost
- Average monthly kWh
- True power
- Cumulative power
- RMS voltage and current (amps)
- Maximum & minimum RMS voltage & current
- Maximum & minimum watts
- Power factor
- Duty cycle
All models are typically in stock and can typically ship the same or next day by method of your choice - UPS, FEDEX, parcel post, etc.
For more information, see the features, specifications and software tabs above.
The Bottom Line:
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 USB cable to interface to a PC.
- Extra Internal Memory for over 8,000 records (over 120,000 if just watts)
- USB interface and logging capability
- 18 values displayed
- Cost displayed
- 1.5% accuracy
- World-wide compatibility
- PC interface
- Software included
- Real-time logging capable (additional software required)
- User selectable and automatic interval setting
This Watts Up? meter measures voltage and current thousands of times a second so it has an incredibly fast response time which enables you to "see the surge" of power when appliances are first turned on. The peak value display captures this surge so it is displayed even if it happens too fast to see live. The minimum RMS voltage display shows the line quality and voltage dips. Minimum RMS current and minimum watts can be used to monitor variances in appliances that run continuously.
Watts up? measures true power (including power factor). True power is what utilities charge for, which can be different than a simple voltage and current measurement (this is called "apparent power"). The duty cycle display shows the percent of time a load is above a preset threshold level. For instance, this threshold can be set to 100 watts and with a refrigerator the duty cycle display will show the percent of time that the compressor is running. A high reading may indicate a bad motor or low freon.
This model also comes with software and USB interface to a PC.
The software automatically graphs all the data and includes an integrated analysis tool, called the Payback Calculator, which automatically calculates the time required for a new energy efficient appliance to pay for itself. Monthly savings are calculated, and they are compared to the purchase price of the new appliance.
As a data logger, the PRO records all the data into non-volatile (stored even if power is lost) memory. One thousand twenty-three data points are stored, starting with a sampling rate resolution of one second. The sample rate resolution increases over time (sample rate equals total time divided by 1023) so years of usage can be accurately recorded. Use the spreadsheet calculator below to determine what the logging interval will be, based on how long you are logging. For instance, the calculator will tell you that the interval between data will be 1 hour, 8 minutes and 16 seconds if you have logged data for 6 weeks.
The PRO also records any power interruptions, which is extremely handy when performing an audit of several devices. In addition, the Pro is capable of real time logging. The communication protocol is fully documented in the help file, including a list of commands required for real-time logging (our software would not be used). The User Forum on this website is a place where users can swap information pertaining to the creation of code which supports real time logging. If you are curious about the software, download it for free in the downloads section. There is also a sample data log which can be loaded into the software so you can get a sense for how easy the software is to use.
- 120 v, 60 Hz, 15 amps
- Higher ratings of 100-250v, 50/60Hz, and 15 amps require the universal outlet (UO) version. The electronics in the meter are capable of 20 amps but the cord and receptacle have different ratings. Verify the rating on the cordset you are purchasing.
- +/- 1.5%, + 3 counts of the displayed value
- Below 60 watts, amps and power factor lose accuracy
- USB interface
- Mains supply voltage fluctuations not to exceed +/- 10% of the nominal voltage
- Rate can be entered from $0.001 to $85.00 per kilowatt hour, in tenths of a penny
- Input is via 6' electric cord (USA style only), output is via outlet on top of meter
- Indoor use only
- Dimensions: 7" x 4" x 2" (18cm x 10cm x 5cm)
- Weight: 1.5 lbs (0.7 kg)
- UL listed to standard UL 610010-1, and CAN CAS/C22.2 61010-1
- UO version also CE marked
- UL certification requires the following statement:
- Altitude up to 2000 meters
- Temperature 5°C to 40°C
- Maximum relative humidity 80% for temperatures up to 31°C decreasing linearly to 50% relative humidity at 40°C
- Installation Category II
There are two types of software available for the WattsUp? Pro and WattsUp? Pro ES power monitors.
The standard software is included with each one. The Realtime software
allows you to monitor results through a Windows PC computer in real
time and is an optional extra. (See the accessories tab).
The features of each are listed below for comparison.
|REALTIME SOFTWARE||STANDARD SOFTWARE|
|Continuous logging of data in real time||Manual download of all data in memory |
|Collects data and graphs it||Collects data and graphs it|
|Updates time stamp to current time||Updates time stamp to current time|
|Exports to Excel and Word||Exports to Excel and Word|
|Includes Payback calculator||Includes Payback calculator|
|Updates in Real Time||N/A|
|Refresh rate as fast as 1 second||N/A |
|Strip chart mode so graphs only shows last number of minutes or number of samples ||N/A |
|E-mail notifications based on user selectable criteria (peak usage, voltage sag, total usage, etc ||N/A |
|Log files automatically created based on user selectable intervals (daily, every 10k records, etc) ||N/A |
|Statistics automatically calculated||N/A|
|Cost: US$72.95||Included with Pro and ES versions|
Troubleshooting hints & tips
ease of use
having to resend the setting to erase data
The Bottom Line: