THE CL355A
Introduction
The Omega Engineering CL355A calibrator heater provides a safe, dry, constant temperature source. It is fast
and economical and can be used either on a bench top or as a portable field unit. The weight of the unit is only
nine pounds/four kilograms. The unit covers the temperature range from 5°C above ambient up to 400°C using
a machined aluminum insert block as the heat transfer medium. The temperature control circuit is built into the
unit.
Features include:
• 10 insert formats available
• Maximum temperature of 400°C/752°F
• An independent over-temperature cutout
• Temperature sensor burnout protection
Even though the unit heats up rapidly, highly efficient insulation ensures that the case remains cool enough to
handle even at maximum operating temperatures. Omega’s calibrator has been designed to comply with all
relevant Radio Frequency interference and electrical safety regulations.
Specification
Figures quoted are at the base of the well at the time of calibration.
Temperature range:
5°C/9°F above ambient to 400°C/752°F
Over-temperature limit:
450°C/842°F (approximately)
Display resolution:
0.1°
Accuracy:
+/-0.6°C (1.1°F)
Stability:
+/-0.15°C (0.27°F)
Heat up time 20° C to 400°C:
12 minutes
Cool down 400°C to 100°C:
21 minutes
Immersion Depth:
4.5" (114.3mm)
Fan Cooling:
Automatic
Weight:
9 lbs (4 Kg)
Dimensions* (H x W x D):
8.75 x 8 x 8 inches/222.25 x 203.2 x 203.2 mm
*excluding the carrying strap
Electrical supply
Voltage
Cycles
Power
230V
50/60Hz
900W
120V
50/60Hz
900W
Note:
The above specifications are quoted for an ambient temperature range of 10°C/50°F to 30°C/86°F.
Outside this range, the quoted figures may deteriorate but the unit will still work safely.
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