INSTRUMENTS FOR HOSPITALS

Air Pressure
Liquid mercury barometers are in use on a daily basis in many hospitals and medical labs around the country. These facilities use the barometers to find the local barometric pressure in order to calibrate various pieces of medical equipment. The Eco-celli barometer reads altitude adjusted barometric pressure. It does not read absolute or true pressure for altitudes above sea level. If your facility requires altitude adjusted barometric pressure at any altitude or is at or near sea level, then the Eco-celli is the perfect replacement for the mercury barometers you currently use.

In August, 1998 DD Barometers of Belgium patented the first non-mercury liquid barometer having the same accuracy as a mercury barometer in measuring atmospheric pressure. They named their barometer the Eco-celli after Evangelista Torricelli, the inventor of the barometer. The Eco-celli contains no mercury. The 64 inch long U-shaped glass tube is filled with an environmentally safe red silicon fluid and gas. Because of the length of the barometer tube, the barometers scale is four times larger than a standard mercury scale making it much easier to read.

The precision thermometer is filled with blue colored methyl alcohol. An increase or decrease in temperature can cause the fluid in the barometer to expand and affect the pressure reading. This is corrected by setting the movable scale, which is attached to both the barometer and thermometer, to the top of the blue fluid in the thermometer and then taking your reading from the red barometer tube.

The Eco-celli barometer costs 1/3 to 1/2 less than a comparable mercury barometer. Given the low cost and and safe operation, replacing mercury barometers now is a sensible option. We recommend the E038.633.

Click here to view all the Eco-celli barometers

Measuring humidity - psychrometer
A psychrometer is one of the most effective instruments used to measure the water vapor content-or the amount of moisture or relative humidity-in the air.
How does it work?
The psychrometer consists of two Celsius thermometer tubes. The red tube measures the actual ambient temperature-referred to as the dry bulb temperature. The base of the blue tube is immersed in a vessel containing a muslin wick soaked in water. This tube measures the temperature caused by the effects of evaporation from the saturated wick. This temperature reading is referred to as the wet bulb temperature. The relative humidity (%) of the air is then calculated by crossing the dry bulb and the wet bulb temperature readings on the easy to read chart beneath the tubes.
It is one of the most easy and accurate methods of determining the relative humidity. The psychrometer is very durable and affordable.

Click here to view all our Psychrometers