Heat Transfer Liquids And Hoses - Lauda Alpha Operating Instructions Manual

6.3

Heat transfer liquids and hoses

Approved heat transfer liquids
Working
LAUDA
temperature
Designation
range
from °C
to °C
Aqua 90  5 – 90
Kryo 30  -30 – 90

 At higher temperatures  Evaporation losses  Use bath covers.
Distilled water or fully deionised water must only be used with the addition of 0,1g sodium carbonate
(Na CO
2 3
 Water content falls after prolonged operation at higher temperatures  mixture becomes flammable (flash
point 119 °C)  check the mixture ratio with a dosimeter.
Safety data sheets are available on request.
Important:
The units are designed for operation with non-flammable liquids to DIN EN 61010-2-010.

Hoses
Tubing type
EPDM-tubing,
non-insulated
EPDM-tubing,
non-insulated
Silicone tubing,
insulated

24 / 54
Chemical
Designation
decalcified water
Monoethylen-
glycol/water
mixture
)/litre water, otherwise  danger of corrosion!
d x t
i
[mm]
9 x 2
12 x 2
11
Protect tubing with hose clips against slipping off!
Viscosity
Viscosity
kin
temperature
mm²/s at 20 °C
1
4 50 at -25 °C
Temperature
range °C
for all LAUDA heat transfer liquids
10 – 90
except for Ultra 350 and mineral oils
for all LAUDA heat transfer liquids
10 – 90
except for Ultra 350 and mineral oils
for all LAUDA heat transfer liquids
-60 – 100
Alpha
@
kin
Catalogue number
mm²/s 5 L
LZB 120 LZB 220 LZB 320
--
LZB 109 LZB 209 LZB 309
Application
except silicone oils
Size
10 L 20 L
Catalogue
number
RKJ 111
RKJ 112
LZS 007
09/2020 j