Criterion Series Benchtop User’s Manual
46
8.2. Consumable Parts and Replacement Interval
The below parts must be replaced periodically. Promptly replace them at the specified interval if not sooner.
Maintenance service is also provided by ESPEC North America. For spare parts and servicing, contact the
place of purchase or ESPEC North America.
Table 8.1. Consumable Parts and Replacement Interval
Part
Replacement Interval
Replacement Procedure
Door Gasket
3 years
Contact the place of purchase or
ESPEC.
Light Bulb
1-2 years depending on use
See section 7.3.2.
8.3. Glossary
Air-Cooled Specifications
The condenser in the refrigeration circuit is cooled by air.
Boil-Dry Protector
A device which prevents the humidifying heater from
overheating when humidifying water is low or empty.
Constant Control
A control method which keeps temperature and humidity
inside the chamber constant.
Dewing
A phenomenon whereby moisture in the air forms a dew.
Dew forms on an object if its temperature is below the dew
point determined by air temperature and humidity. For
example, the dew point for an air temperature of 85°C and a
humidity of 85% RH is 81°C.
Dry-Bulb Temperature
The air temperature measured by a dry-bulb temperature
sensor.
Effective Area
The area inside the test area up to 1/6 the distance from
walls in all direction
External Alarm Terminal
A terminal which outputs a signal when the chamber is
stopped by trouble. The terminal is designed to set off a
buzzer or bell in the area around the chamber or to send an
alarm signal to a remote point.
Heat Load (Live load)
The heat generated by specimens inside the chamber. The
name comes from the fact that this heat acts as a load on the
chamber.
Humidifying Water
Water used to humidify the test area. Water is kept in the
humidifying tray. The humidifying heater evaporates it to
humidify the test area.
Humidity Fluctuation
The variation between the mean maximum humidity around
the geometric center of the chamber. Not the same as the
difference from the true humidity.
Humidity Range
The range of humidity that can be reproduced inside the
chamber.
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