Dual-probe support refers to the ability of a single transmitter or monitoring device to interface with two independent measurement devices, and then display, record, and transmit their data. It allows multiple parameters, or redundant parameters to be more easily monitored in the same space, or in different locations.
Often an environment or process requires monitoring in multiple locations, and for a number of different parameters. It is common to be monitoring both the inlet and exhaust conditions of a single process to ensure product quality and energy efficiency. When the mounting space is limited, one transmitter with two probes is a useful and practical choice, for example, oil processing facilities with multiple oil dehydrators, or bread-proofing (multiple ovens) where one transmitter could monitor two separate ovens.
The life science industry often monitors multiple parameters in a single space, requiring multiple sensors. Certain applications, such as hydrogen peroxide bio-decontamination, may also require multiple measurement locations in larger spaces, should there be variances of temperature and air flow.
In each of these cases, a single transmitter could be used to simplify communications and provide a cleaner installation. This will reduce installation cost and effort in some cases, and lead to a lower cost of ownership.
Overall, the benefit of using two probes to measure two different parameters is to expand your awareness of the conditions in a space or process. If multiple variables affect the product quality or the energy efficiency of the operation, not being limited by one measurement device can offer better insight and information to make control decisions.
The probe combinations are many, as Vaisala offers smart probes for a variety of measurement parameters: humidity, temperature, dew point, carbon dioxide, moisture-in-oil, and vaporized hydrogen peroxide. There are no probe combination limitations for any of the available smart probes.
Measurement in life science incubators is continuous with many calibration checks. Therefore, an incubator might use a combination of the GMP251 CO2 probe alongside the HMP9 humidity and temperature probe to ensure the correct Ph and humidity level.
Fluidized bed driers, plastics drying and applying coatings to capsules are applications that might use a combination of a dew point probe at the drier inlet, and a humidity and temperature probe at the outlet.
High humidity applications that involve significant levels of condensation might use a heated probe for moisture levels, alongside a temperature probe to calculate variables such as relative humidity.
Advanced compressed air driers might use two dew point probes to monitor the drier outlet as well as the purge air to increase energy efficiency.
And oil processing operations might want to monitor both the moisture in the oil they condition, along with the air dew point to ensure the dryness of the vessel being filled with oil.
There are several applications that could benefit from a transmitter with dual probe support. Any application that uses air to feed a process, and then monitors the exhaust to determine the effectiveness of that process can use dual probes for the inlet and outlet. Basically, any process that needs to measure before and after conditions can use a transmitter with dual probe support. Energy resources and process duration are directly affected by these conditions, and real time control decisions can be made to maintain or protect product quality.
Additionally, applications that require similar measurements in different locations can use remote probes tied to a single transmitter. This allows for simplified power delivery and communication support. With the Vaisala Indigo500 Series, the Power over Ethernet option will require only one Ethernet cable to power and communicate with two measurement devices for a wide range of parameters.
Another benefit is be the ability to exchange the measurement probes from the transmitter, without removing the installed transmitter. This will help with calibration efforts, as spare probes can be easily rotated into service. This also provides flexibility should the process conditions change, and different conditions are being measured. For example, if a manufacturer of a dryer or environmental test chamber is supplying instruments for different customer conditions; standardizing on one transmitter type, and then being able to offer probes for different conditions will simplify their offering and provide maximum flexibility to their customers.
Learn more about the Indigo family or contact us for more information.
Vaisala Indigo200 series transmitters are host devices for displaying measurement values from Vaisala's Smart Humidity, Temperature, Dew Point, Moisture in Oil, CO2 and H2O2 Probes.
The Vaisala Indigo500 series transmitters are host devices for Vaisala Indigo-compatible, stand-alone smart probes. The Indigo500 series include multi-functional Indigo520 transmitter and Indigo510 transmitter with basic features.
Vaisala Temperature Probe TMP1 is designed for demanding temperature measurements in industrial applications such as pharmaceutical industry and calibration laboratories, where accuracy and robustness are essential.
Vaisala HUMICAP® Humidity and Temperature Probe HMP3 is a general-purpose probe designed for processes with moderate humidity and temperature levels.
Vaisala HUMICAP® Humidity and Temperature Probe HMP4 is designed for high-pressure applications such as compressed air systems in maritime, breathing air, and industrial applications, where measurement performance and chemical tolerance are essential.
Vaisala HUMICAP® Humidity and Temperature Probe HMP5 is designed for high temperature applications such as baking ovens, pasta dryers, ceramics and industrial drying kilns where measurement performance and chemical tolerance are essential.
Vaisala HUMICAP® Humidity and Temperature Probe HMP7 is designed for applications which involve constant high humidity or rapid changes in humidity
Vaisala HUMICAP® Humidity and Temperature Probe HMP8 is designed for pressurized applications in compressed air systems, refrigerant dryers, and other pressurized industrial applications where easy insertion and removal of the probe and adjustable installation depth into the pipeline are needed.
The Vaisala HUMICAP® Humidity and Temperature Probe HMP9 is designed for easy installation in rapidly changing environments where a fast response time, measurement performance, and chemical tolerance are essential.
Vaisala DRYCAP® Dew Point and Temperature Probe DMP5 is designed for in-line humidity measurement in industrial drying applications with high temperatures and a wide dew point range.
Vaisala DRYCAP® Dew Point and Temperature Probe DMP6 is designed for in-line humidity measurement in industrial drying applications with very high temperatures and a wide dew point range.
Vaisala DRYCAP® Dew Point and Temperature Probe DMP7 is made for tight spaces and low-humidity applications.
Vaisala DRYCAP® Dew Point and Temperature Probe DMP8 is designed for industrial low-humidity applications with pressure up to 40 bars.
The Vaisala CARBOCAP® Carbon Dioxide Probe GMP251 is an intelligent, stand-alone, %-level probe for measuring CO2 in life science incubators, cold storage facilities, fruit and vegetable transportation, and in all demanding applications where stable and accurate percentage-level CO2 measurements are needed.
The Vaisala CARBOCAP® Carbon Dioxide Probe GMP252 is an intelligent, stand-alone, ppm-level probe. It's intended for measuring CO2 in agriculture, refrigeration, greenhouses, demanding HVAC applications, and for plant growth chamber manufacturers.
The Vaisala PEROXCAP® Hydrogen Peroxide, Humidity, and Temperature Probe HPP270 series probes are designed for demanding hydrogen peroxide bio-decontamination.