Model 909
RTPW 25.5Ω 100Ω
Nominal Resistance
25.5Ω at 0°C 100Ω
Recommended Max. Current mA
1 0.5
Nominal Sensitivity
0.1 Ω/°C 0.4 Ω/°C
Resistance Ratio
Wga>1.11807 as required by ITS-90
Self-heating
1mK / 25 microwatts
Stability
Depends upon the temperature range of use. Typical annual stability, see the table on the next page.
Internal leads
4 wire-platinum
External Leads
Silver-plated multi-strand wires in a low-loss insulation cable terminating in gold-plated terminals.
Model_909_-_Working_SPRT