| 5¡¢Key technical para- meters
of multi-point flame-proof armored platinum thermister
|
a Temperature in use: -200¡«600¡æ
b Insulation resistance: Under the condition in which
the temperature is 25 ¡À10¡æ.and the humidity is more than
or equal to 80 %, the insulation resistance shall be more
than or equal to 100M¦¸.
c Depth of insertion: 100-25000mm
d Outer diameter of armor: ¦Õ3¡«6
e Time constant:¡Ü60s without protective tube
f Level of protection of outer casing: IP65, explosion-proof
mark:d IIBT6
g Number of points: 3¡«8
|
| 6¡¢Characteristics of assembling
thermister |
¡¡¡¡As a sensor to measure and adjust the temperature, an
assembling thermister is generally
used to orm a complete set with indicator instruments
and directly m-easure the temperatures
of the surface of such media as liquid, steam and gas
and solid in the temperature range of
-200 to +500¡æ in various production processes.
|
7¡¢Types of assembling thermister
¡¡¡¡Nominal resistance R0 at the temperature of
0¡æ, resistance ratio, R100/R0 and precision
of meas- urement of temperature (see Table 1)
|
8¡¢ Material quality of prot-
ecting tube and time constant
|
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