ETC HD421

Platinum Resistance Temperature Detector
HD 421
HD 421 Pt 100-type platinum temperature sensors are characterized by long-term stability, precision over a
broad temperature range and compatibility. Main application area is the process technology.
Nominal
Resistance R0
100 Ohm at 0°C
Tolerance
DIN EN 60751
1996-07
Class B (to 650°C)
Class 2B (to+850°C)
Tolerance
DIN EN 60751
2009-05
F 0.3 (to 650°C)
F 0.6 (to 850°C)
Order Number
Plastic Box
32 208 228
The measuring point for the nominal resistance is defined at 4mm from the end of the sensor body.
Specification
DIN EN 60751
Temperature range
-70°C up to +850°C
Tolerance Class B:
Tolerance Class 2B:
-70°C up to +650°C
-70°C up to +850°C
Temperature coefficient
TC = 3850 ppm/K
Leads
Pt- wire
Lead length (L)
6mm ±1mm
Long-term tests
1000h at 850°C (energized, open)
smaller then the allowed deviation according
to DIN B. 1000 h at 650°C (under current
as clean MI-type) smaller then the allowed
deviation according to DIN B
Vibration resistance
at least 40g acceleration with 8ms half sine
wave signal, depends on the installation
Shock resistance
at least 100g acceleration at frequencies
from 10Hz up to 2000Hz, depends on the
installation
Environmental conditions
Unhoused for dry environment only,
Up to 650°C in housings also as clean MI-type
possible, above 650°C no reducing
atmosphere, free air admission necessary
Insulation resistance
>100 M at 20°C; >2 M at 650°C
Self heating
0.2 K/mW
Response time
Water current (v= 0.4m/s):
Air stream (v= 2m/s):
t0.5 = 0.05s
t0.9 = 0.17s
t0.5 = 3.3s
t0.9 = 13.0s
Measuring current
20°C max. 5mA; 850°C max. 2.8mA
(self heating has to be considered)
Note
Other tolerances, values of resistance and wire
lengths are available on request.
We reserve the right to make alterations and technical data printed. All technical data serves as a guideline and does not guarantee
particular properties to any products.
Heraeus Sensor Technology USA
1901 Route 130
North Brunswick, NJ 08902
Phone 732-940-4400
Fax 732-940-4445
Email [email protected]
http://heraeus-sensor-technology-us.com
Name of document: 30910034 Index A
Status: 06/2010