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7100 Calibration Bath
User's Guide
Table 2 Table of Bath Fluids and Their Characteristics
Fluid
Lower
(# = Hart Part No.)
Temperature
Limit*
Halocarbon 0.8
–100°C (v)**
#5019
Methanol
–96°C (fr)
Water
0°C (fr)
Ethylene
–30°C (fr)
Glycol—50% #5020
Mineral Oil No.7
10°C (v)
#5011
Silicone Oil Type
–40°C (v)**
200.05 #5010
Silicone Oil Type
–30°C (v)**
200.10 #5012
Silicone Oil Type
10°C (v)
200.20 #5013
Silicone Oil Type
30°C (v)
200.50 #5014
Silicone Oil Type
70°C (v)
550 #5016
Silicone Oil Type
80°C (v)
710 #5017
Silicone Oil Type
66°C (v)
210-H
Heat Transfer Salt
180°C (fr)
#5001
*Limiting Factors — b - boiling point
**Very low water solubility, ice will form as a slush from condensation below freezing.
32
Upper
Temperature
Flash
Viscosity
Limit*
Point
(centistokes)
70°C (e)
NONE
5.7 @ –50°C
0.8 @ 40°C
0.5 @ 70°C
10°C (fl,cc)
12°C
1.3 @ –35°C
0.66 @ 0°C
0.45 @ 20°C
95°C (b)
NONE
1 @ 25°C
0.4 @ 75°C
90°C (b)
NONE
7 @ 0°C
2 @ 50°C
0.7 @ 100°C
166°C (fl)
168°C
15 @ 75°C
5 @ 125°C
130°C (fl, cc)
133°C
5 @ 25°C
209°C (fl, cc)
211°C
10 @ 25°C
3 @ 135°C
230°C (fl, cc)
232°C
20 @ 25°C
278°C (fl, cc)
280°C
50 @ 25°C
230°C (fl, cc)
232°C
50 @ 70°C
300°C (fl, oc)
10 @ 104°C
300°C (fl, oc)
302°C
50 @ 80°C
7 @ 204°C
313°C (fl, oc)
315°C
50 @ 66°C
14 @ 204°C
550°C
NONE
34 @ 150°C
6.5 @ 300°C
2.4 @ 500°C
e - high evaporation
fl - flash point
Flash Point: The point at which ignition may occur. See flash point discussion
in
Section8.1.8.
The point shown may be either the open or closed cup flash
point. See
Figure 7
on page 33.
Boiling Point: At the boiling point of the fluid the temperature stability is diffi-
cult to maintain. Fuming is excessive. Excessive amounts of heater power may
be required because of the heat of vaporization.
Decomposition: All high temperature fluids may reach a temperature point at
which decomposition of some form will begin. While it always begins slowly at
some lower temperature, the rate can increase to the point of danger or imprac-
ticality at a higher temperature.
Specific
Specific Heat
Gravity
(cal/g/°C)
1.71 @ 40°C
0.2
0.810 @ 0°C
0.6
0.792 @ 20°C
1.00
1.00
1.05
0.8 @ 0°C
0.87 @ 25°C
0.48 @ 25°C
0.84 @ 75°C
0.53 @ 75°C
0.81 @ 125°C
0.57 @ 125°C
0.92 @ 25°C
0.4
0.934 @ 25°C
0.43 @ 40°C
0.45 @ 100°C
0.482 @ 200°C
0.949 @ 25°C
0.370 @ 40°C
0.393 @ 100°C
0.420 @ 200°C
0.96 @ 25°C
0.4
1.07 @ 25°C
0.358 @ 40°C
0.386 @ 100°C
0.433 @ 200°C
1.11 @ 25°C
0.363 @ 40°C
0.454 @ 100°C
0.505 @ 200°C
0.96 @ 25°C
0.34 @ 100°C
2.0 @ 150°C
0.33
1.9 @ 300°C
1.7 @ 500°C
fr - freeze point
v - viscosity — Flash point test oc = open cup cc = closed cup
Thermal
Thermal
Conductivity
Expansion
Resistivity
(cal/s/cm/°C)
(cm/cm/°C)
(10
0.0004
0.0011
0.0005 @ 20°C
0.0014 @ 25°C
0.0014
0.0002 @ 25°C
0.001
0.00025 @ 25°C 0.0007 @ 50°C
5 @ 25°C
0.00028 @ 25°C 0.00105
1000 @ 25°C
10 @ 150°C
0.00032 @ 25°C 0.00108
1000 @ 25°C
50 @ 150°C
0.00034 @ 25°C 0.00107
1000 @ 25°C
50 @ 150°C
0.00037 @ 25°C 0.00104
1000 @ 25°C
50 @ 150°C
0.00035 @ 25°C 0.00075
100 @ 25°C
1 @ 150°C
0.00035 @ 25°C 0.00077
100 @ 25°C
1 @ 150°C
0.0003
0.00095
100 @ 25°C
1 @ 150°C
1.7 Ω /cm
0.0014
0.00041
12
Ω-cm )
3
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