Humidity Sensing Cell
Accessory for the MFP-3D™ AFM
The Humidity Sensing Cell independently measures humidity conditions with a sensor located within a sealed sample cell. This accessory also allows for rudimentary humidity control. It is ideal for experiments where relative humidity plays an important role, such as crystal growth.
The Humidity Sensing Cell is a small sealed sample chamber with a dedicated side access port for the solid state humidity sensor. The sensor measures the relatively humidity of the air surrounding the sample and transmits it back to the AFM controller. The MFP-3D software displays humidity as a function of time and saves a value with every stored image. The sample cell is based on the Closed Fluid Cell (Model CCELL) and accepts samples of up to 30mm in diameter. Samples are mounted on a glass disc which forms the bottom of the cell. Optical access is available from above and below the sample. A clamp and FKM (Viton® equivalent) membrane fit on top of the cell for an airtight seal.
A second method for controlling humidity is by flowing a mixture of dry and wet gas through one of the access ports. The sensor is used to confirm the RH value of the supplied gas and serves as a guide for adjusting the valves to the desired RH level.
The cell has four available 1/16" diameter access ports and three 0.036" ports. These access ports may be used with tubing to fill and drain the salt cup with various solutions or attach a gas supply.
Precise Measurement with the Environmental Controller
Humidity Sensing Cell – Model HUMIDSC
The Humidity Sensing Cell includes the Humidity Stage and a variety of accessories for installation and imaging. Requires the Environmental Controller (purchased separately).
* Not pictured
0-100% humidity range (non-condensing)
Humidity control (% RH)
Gas flow through
• Closed loop operation
MFP-3D and SmartStart are trademarks of Asylum Research. Other trademarks are those of their respective owners. Specifications and kit items subject to change without notice.
Humidity Sensing Cell
Schematic of Humidity Sensing Cell assembly.
The Environmental Controller easily interfaces with the Humidity Sensing Cell and ARC2™ Controller.