This guide is designed to provide standard and recommended guidelines for installing the SV11. For the best performance and to meet the range and accuracy as stated in the datasheet, the SV11 should be installed following these recommendations.

Standard Installation for the SV11

  • Mount indoors on a ceiling. It’s recommended to be installed 8’ above the floor.

  • On a solid, nonmetallic surface (e.g. drywall, drop ceiling, wood, concrete, etc.)

  • Away from areas that are exposed to air flow and circulation (e.g. HVAC vents, windows, refrigerator blowers, etc.)

  • Away from direct sunlight exposure

  • Allow the SV11 to self-calibrate over a 24-hour period

Installation Location

The SV11 is designed to be installed on the ceiling; the range and accuracy values listed in the data sheet are based on the device mounted in this position. If the SV11 is mounted on a wall (vertically), it will still function, but the range and accuracy values may not be within the range specified in the datasheet.

To achieve the best accuracy for all the sensors on the device, it’s recommended to mount the SV11 on an 8’ ceiling. This will provide up to 250 sq ft of total coverage per sensor.

Installation Surface

The SV11 is designed to be installed on a solid nonmetallic surface such as drywall, a drop ceiling, concrete, or wood.

If the SV11 is mounted on a metal surface in a cold [-5º C - +5º C (23° F - 41° F)] or hot [27º C - 50º C (80° F - 122° F)] environment, it’s recommended to place a piece of rubber material between the surface and the SV11 mounting plate. This will ensure that the temperature of the mounting surface has less of an impact on the accuracy of the SV11 sensor readings.

Calibration Time

When the device is first plugged-in, temperature readings may be higher or lower than anticipated. These readings will self correct over an automated calibration period. The SV11’s initial calibration period is 4 hours, but can take up to 24 hours to complete full calibration. For optimal accuracy, it’s recommended to mount the SV11 in a stable environment without intermittent events such as sporadic HVAC events.

Note: There is a possibility that there will be a variability of the sensor readings on the SV11 if two or more are placed next to one another. Each SV11 has its own inherit characteristics and calibration can result in different readings.

Temperature & Humidity Range & Accuracy of SV11

Below are the ranges and accuracy measurements for the SV11’s temperature and humidity sensor. These values represent the typical and recommended installation location for the SV11. If the SV11 is installed outside of the recommendations, the range and accuracy may fall out of the accuracy range stated in the data sheet.

Temperature Range

Temperature Accuracy

Humidity Accuracy

Comments

< -5º C (23° F)

N/A

N/A

Not within operating range of the device

-5º C - 50 º C (23° F - 123° F)

Typical ± 2.5º C (± 4.5º F)

Max ± 3.5º C (± 6.5º F)

± 10%

Accuracy measurements based on the device being install as described in this guide

> 50º C (122° F)

N/A

N/A

Not within operating range of the device

Other Considerations & Constraints

To meet the range and accuracy values as stated in the datasheet, it is recommended to install the SV11 as stated in this document. There are cases where a customer may want to install the SV11 in an environment outside of the recommended guidelines. This is OK so long as the environment is within the operating range of the device (-5º C - 50 º C (23° F - 123° F)). However, the accuracy of the sensors on the SV11 may not fall within the range stated in the datasheet.

Mounting on a Non-Solid Surface (e.g. hanging in air)

The SV11 is designed to be installed on a solid ceiling surface facing the ground. If the SV11 is installed in “free air”, where the front and back of the device are exposed, the accuracy of the sensors on the SV11 may not fall within the stated range.

Mounting on a Wall

The SV11 can be mounted on a wall, however it is not recommended. The ranges and accuracy of the sensors are specified for the device being installed on a solid ceiling surface. If installed on a wall, the accuracy and ranges of the SV11 sensors may be outside of what is specified in the data sheet.

Exposure to Direct Sunlight

For the highest accuracy, do not place the SV11 where it will be exposed to direct sunlight.

If the SV11 is exposed to direct sunlight, the temperature and humidity readings may fall out of the accuracy range stated in the data sheet.

Exposure to Air Circulation

If the SV11 is exposed to either consistent airflow or sporadic airflow (e.g. an HVAC vent, a refrigerator blower, a window, etc.), the accuracy of the temperature sensor and the other onboard sensors may fall out of the accuracy range stated in the data sheet. Exposure to air flow changes the thermodynamics of the device which will lead to varying inaccuracies in the temperature, humidity, and other sensor readings.

Air flow as present in areas like HVAC ducts can generate pressure drops, back pressure and dynamic fluctuations leading to increased sensor noise and reduced accuracy.

For the highest accuracy, mount the SV11 away from HVAC vents or areas where the device could be exposed to varying levels of air flow or circulation.

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