n
Avoid chlorine content in the water at all costs. Do not add chlorine
to the water. Cleaning agents and disinfectants, for example, contain
chlorine.
n
The water must be free of impurities. Water with iron content is unsuit-
able due to rust formation and untreated river water is unsuitable due to
algae growth.
n
The addition of ammonia is not permitted.
Table 4: Permissible heat transfer liquids for Integral T
Designation
Chemical characteri-
zation
Working tem-
perature range in
°C
Viscosity (kin) in
mm²/s at 20 °C
Viscosity (kin) in
mm²/s at tem-
perature
Flash point
in °C
Kryo 51
Silicone oil
-50 – 120
5
34 at -50 °C
120
Kryo 30
Monoethylene glycol/
water mixture
-30 – 90
4
50 at -25 °C
---
Kryo 20
Silicone oil
-20 – 170
11
28 at -20 °C
170
Aqua 90
1
Decalcified water
5 – 90
1
---
---
Ultra 350
Aromatic hydro-
carbon
30 – 200
48
16 at 40 °C
212
Ultra 301
2
Mineral oil
40 – 230
76.5
35.4 at 40 °C
245
Please note:
1
Aqua 90 or water may only be used in the Integral 130 T and
230 T(W) devices.
2
Recommendation: Overlay with nitrogen at 150 °C and above
Table 5: Permissible heat transfer liquids for Integral XT (closed system)
Designation
Chemical characteri-
zation
Working tem-
perature range in
°C
Viscosity (kin) in
mm²/s at 20 °C
Viscosity (kin) in
mm²/s at tem-
perature
Flash point
in °C
Kryo 95
Silicone oil
-95 – 160
1.6
20 at -80 °C
64
Kryo 71
Silicone oil
-70 – 220
5.3
44 at -60 °C
125
Kryo 70
Silicone oil
-70 – 220
5
42 at -60 °C
121
Kryo 65
Hydrocarbon
-65 – 140
1.7
10 at -40 °C
62
Kryo 30
1
Monoethylene glycol/
water mixture
-30 – 90
4
50 at -25 °C
---
Ultra 350
2
Aromatic hydro-
carbon
30 – 350
48
16 at 40 °C
212
Ultra 301
Mineral oil
40 – 300
76.5
35.4 at 40 °C
245
Please note:
n
1
Do not use Kryo 30 in devices with cascade cooling.
n
2
Use Ultra 350 for the Integral high-temperature thermostats.
V6
Integral Process Thermostats and High-Temperature Thermostats
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