48
11 Appendix
Probe internal resistance R
I
in air at 20°C (68 °F)
and 17 W heat output
15 ... 30
Probe voltage in air 20° C (68 °F) and 17 W heat
output (new probe)
0 ... -15 mV
Heat output at room temperature 16 ... 22 W - depending on version
Supply voltage of heating in plug Polarity is changed cyclically if P
H
18 VA 11,4 V
if P
H
20 VA 12,34 V
if P
H
25 VA 14,8 V
Heat output for T = 350 °C (662 °F) ca.17 W
Heating current if P
H
20 VA approx. 1,4 A
approx. 5A briefly during heating
PTC characteristic
Electrical connection Plug
Isolation resistance between heating and probe
connections
> 30 M
Weight [g] [oz] 600 (21.2) (with housing),
290 (10.2) (without housing)
Material probe housing 1.4751/1.4301
Material connecting pipework cooper strand nickel-plated
Insulation FEP
Characteristics
Environmental conditions
Operating temperature Connecting cable 150 °C (302 °F)
Useful life 2 years with heating oil and natural gas
Mounting position horizontal via vertical to horizontal
Protection class DIN 40050; IP42
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