LAUDA Ultra-Thermostats
UB 20(-D), UB 25, UB 50, UB 30, UB 40
UB 20 F, UB 20 J, UB 30 J, UB 40 J, UB 65 J
UB 20 JL, UB 30 JL, UB 40 JL
YATE0013 /10.04.02
- 20 -
5
Bath liquids and hose connections
The operating temperature ranges of the bath liquids and hoses are for general
information only and may be restricted through the operating temperature range of the
units or the safety requirements specified in the appropriate standards (see Item 4.2).
5.1 Bath
liquids
Operating temperature range 5...90°C
Use softened water. Make up evaporation losses at elevated temperatures. Losses can
be reduced by providing suitable bath covers (see accessories).
Distilled or deionised high-purity water is corrosive and should be used only with the
addition of about 0.1 g sodium carbonate per litre water. Otherwise its use may lead to
corrosion.
Temperatures near zero and below:
Water - monoethylene glycol mixture, preferably Glycoshell P 300, in the ratio 1:1
Kryo 30 (former designation: Ultra-Therm G 100)
Cat. No. LZB 009
working temperature range
-30...90°C
boiling point
110°C
viscosity at 20°C
4 mm
2
/sec
non-flammable
When operating for longer periods at higher temperatures the proportion of the water
decreases. The mixture approaches the properties of pure glycol and becomes
flammable (flash point 128°C). The mixture ratio should therefore be checked from time
to time against the original mixture, e.g. by using a hydrometer.
working temperature range 30...200°C
Ultra 350 (former designation:Ultra-Therm 330 SCB)
Cat. No. LZB 007
(synthetic heat transfer oil)
viscosity at 20°C
34 mm
2
/sec
fire point
>
240°C
working temperature range 80...280°C
Ultra 300 (former designation: Ultra-Therm SW 300 N)
Cat. No. LZB 008
(Silicone oil)
viscosity at 80°C
30 mm
2
/sec
viscosity at 100°C
20 mm
2
/sec
fire point
>
400°C