Equipment

These meters are useful for short-term or long-term metering periods. Customizable configuration allows for flexible kW metering deployment including single phase, 3-phase Delta and 3-phase Wye electrical loads up to 600V and 3,000A. Four current transducer inputs allow for up to four single-phase loads, two three-phase balanced Delta loads, or one three-phase load where each conductor is measured separately.  These are line powered meters meaning that the voltage connection powers the meter and does not require a separate power supply. Meters can communicate via local Wi-Fi signal for safe access outside of the panel when panel is live and the meter is powered. This meter has a magnetic back for mounting inside of electrical panels and can fit inside most electrical panels and disconnect boxes.

eGauge meters are useful for short-term or long-term metering periods. Customizable configuration allows for flexible kW metering deployment including single phase, 3-phase Delta and 3-phase Wye electrical loads up to 600V and 3,000A. Fifteen discrete current transducer inputs allow more loads to be monitored on a single meter compared to the Dent. These are line powered meters meaning that the voltage connection powers the meter and does not require a separate power supply. Meters can communicate via local Ethernet cable for safe access outside of panel when panel is live, or can be connected to the customer's network for remote monitoring and data download in real time. 

Wattnode pulse kW meters are useful for long-term metering of 3-phase kW loads. These meters are configured to convert 60 Hz 3-phase electrical demand at a specified voltage - either 480V or 208V - to a pulse signal that can be recorded with a data logger. The meter fits easily in most electrical panels or disconnect boxes and is designed to be zip-tied for safe long-term deployment.

Yokogawa meters provides detailed electrical data for a single electrical load and can be installed on a single-phase, split pole, or 3-phase load. In addition to electrical demand data, the meter can be used to: detect irregularities in power systems such as voltage sags, dips, and swells; log up to 50th orders of harmonics; and, provide a vector display for tracking of voltage/current phase relationships. The meter is large and is not designed to fit inside electrical panels so it is only suitable for very short-term metering periods while the DMI engineer is on site.

Plug through meters are designed for long term metering of one single phase 120V load. The meters function as a small extension cord with electrical demand data collection capability to monitor electrical devices designed to plug into standard 120V wall outlets. These meters are most accurate when metering loads that operate at less than 14 amps.

For applications where safe access to voltage connections is not available, DMI can installed HOBO data loggers that connect to clamp-on current transducers (CTs) to monitor amperage. This metering approach is best used when safety concerns outweigh the significance of collecting accurate electrical demand data. Can be used for long term data collection when access only allows for spot metering kW.

DMI's collection of ultrasonic flow meters are used to measure liquid flow using transit time clamp-on technology. An ultrasonic signal is transmitted and received by two transducers mounted on the outside of a pipe, and the liquid flow rate inside of the pipe is calculated by the meter based on the time interval delay from the transmission and reception of the ultrasonic signal. DMI is able to install this meter without any impact on operation and it is ideal for measurement in filled, closed pipes with clean liquids. The meter outputs 4-20mA instantaneous flowrate signal as well as a pulse signal for data logging. Flexible installation configurations allow for pipe diameters ranging from ½” to 48” and temperatures ranging from -40°F to 248°F. Requires straight pipe length of 10X diameter upstream and 5x diameter upstream for optimal accuracy.

DMI can use K-type thermocouples to mount on the exterior of pipe as well as K-type thermocouple probes that can be installed into a site’s existing thermal well to monitor water temperature. Collecting temperature differential data combined with ultrasonic flow metered data enables DMI to effectively install a non-invasive BTU meter onto any hydronic loop without any impact on operations at the site.

DMI's Testo Combustion analyzer samples combustion exhaust air and reads exhaust gas parameters to calculate combustion efficiency based on exhaust air temperature, excess oxygen, carbon monoxide and NOX emissions. This meter can be used on any natural gas burner system with a testing port including hot water boilers, steam boilers, asphalt dryers, etc.

Installing compressed air meters requires holes to be drilled on compressed air piping to mount the meter. DMI will consult with a site that is interested in collecting CAIR flow data to purchase the appropriate meter, and we will wire the meter to accommodate data logging.  We work with the site's facility engineer to then install the meter in the field. DMI can use our data loggers to record data or consult with the site to purchase a data logger for long term deployment and monitoring.