Humidity Control: Temperature and humidity are interrelated, and must be monitored and controlled in conjunction with one another. Even apparently sealed display cabinets still need to be monitored if potential damage to their contents is to be avoided. If a seal were to fail, it could be months or, possibly, years before it is noticed, by which time serious damage could have been done.
Moisture is one of the many threats against us in our fight to preserve the antique objects that make up our heritage. Paintings, furniture, linens and other items made of organic materials are highly sensitive to unstable or constantly varying humidity levels. Metallic objects of all types are susceptible to corrosive degradation in the presence of high humidity conditions and this can cause irreparable damage in some instances.
To avoid expensive and complicated restoration, the condition that promotes the damage should be avoided. Maintaining relative humidity and temperature within controlled limits is a major factor in ensuring that our heritage is preserved for the future.
Hanwell have a range of humidifiers and dehumidifiers to suit all requirements. From the b125, a humidifier specifically designed to provide gentle humidification in small rooms or show cases, to the ccr30, which combines a humidifier and dehumidifier with a radio control system into one unit, actuated by signals from Hanwell T/RH telemetry units. The ccr30 allows the control of relative humidity over the full range required for preventive conservation, with a user adjustable switching hysteresis. The hardware is guaranteed never to allow the dehumidifier and humidifier to be on simultaneously.
The ccr30 is designed to give precise and automatic control of humidity levels based on signals received from Hanwell radio telemetry sensors. Problems created by microclimates in the vicinity of the plant are completely removed by the use of remote radio sensors. Built to the highest standards, the ccr30 will give years of trouble free service with minimal maintenance.
Complementing the above units is the cs-4 humidifier, which operates in accordance with the evaporation principle, which is proven to be one of the best methods for humidification in museums, libraries and art galleries. This particular procedure ensures that calcium deposits or water precipitation do not form, thereby, protecting works of art and furnishings from contamination.
The humidifier is electronically controlled with a ch-1 humidistat, a dual device that with the use of an additional power-switching unit (optional) can control both a humidifier and de-humidifier, keeping the humidity precisely at the required level.
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