 |
11 fixed temperature
values |
|
Simulation of 10 and 20
Ohm connecting cable resistances
for type 4512 |
|
Calibration according to
DIN EN 60751 |
|
Accuracy:
| ±
(0.2 + 0.001
x t) in °C |
[with
t = adjusted value in °C]
with t > - 20 °C |
| ±
(0.2 + 0.007
x t) in °C |
[with
t = adjusted value in °C]
with t from - 200 °C
... - 20 °C |
|
|
Switch contacts Ag
claded over E Cu and gold-plated |
|
Resistance material
MANGANIN ® ,
TK < 10 ppm/K |
|
Negligible ambient
temperature influence |
|
Long-term stability 0,02
% for years |
|
2-wire-connection
technique |
|
Height 35 mm, breadth 66
mm, depth 88 mm |
|
Weight approx. 100 g |
|
For years successful in
use |
|
Maintenance-free |
|
In a little
compact, sturdy plastic housing is put a
high-class switch with wire-wound
precision resistors of MANGANIN®. Using
this selector switch 11 fixed temperature
values according to DIN EN 60751 of the
resistance thermometer Pt100 are
simulated. The simulated resistance
value, which corresponds to the selected
temperature, will be picked up at the
terminals "Rsim". Two other
terminal sockets serve to simulate
connecting cable resistances between 10
and 20 Ohm.
The
selector switch of types 4511 and 4512 is
programmed with 11 temperature values as
individually given by the customer.
Within a range from -200C ... +850 °C
each temperature value can be selected.
The resistance material MANGANIN® used
in the instrument has a temperature
coefficient of < 10 ppm. Therefore the
ambient temperature needs not be taken
into account.
|
