Lauda RA 12 - HEAT TRANSFER LIQUIDS AND HOSES

22 / 52 Alpha 7/2022
6.3 Heat transfer liquids and hoses
Approved heat transfer liquids
LAUDA
Designation
Working
temperature
range
Chemical
Designation
Viscosity
kin
Viscosity
kin
@
temperature
Size
Catalogue number
from °C
to °C
mm²/s at 20 °C
mm²/s
5 L
10 L
20 L
Aqua 90 
5 – 90
decalcified water
1
--
LZB 120
LZB 220
LZB 320
Kryo 30 
-30 – 90
Monoethylen-
glycol/water
mixture
4
50 at -25 °C
LZB 109
LZB 209
LZB 309

 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
2
CO
3
)/litre water, otherwise  danger of corrosion!
 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
d
i
x t
[mm]
Temperature
range °C
Application
Catalogue
number
EPDM-tubing,
non-insulated
9 x 2
10 – 90
for all LAUDA heat transfer liquids
except for Ultra 350 and mineral oils
RKJ 111
EPDM-tubing,
non-insulated
12 x 2
10 – 90
for all LAUDA heat transfer liquids
except for Ultra 350 and mineral oils
RKJ 112
Silicone tubing,
insulated
11
-60 – 100
for all LAUDA heat transfer liquids
except silicone oils
LZS 007
 Protect tubing with hose clips against slipping off!