Baumer PT20 Manuel De Mise En Service page 10

Compact RTD temperature sensor
Process temperature as a function of ambient temperature
300
250
200
150
100
50
0
0 20 40 60 80 100
Tamb (°C)
12.2 Transmitter
Power supply
Voltage supply range
Reverse polarity
protection
Power-up time
Factory settings
Output range
Current limits
Output at sensor fault
Damping
12.3 KingCrown LED function (Dual Channel version)
LED indicator (IO-Link)
Normal operation
SW1 active
Out of range
Error
Short circuit
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Temperature measurement
PT20
85°C
85°C
7 ... 35 V DC
„„
(Standard version)
10 ... 35 V DC
„„
(Dual Channel version)
18 ... 30 V DC
„„
(Dual Channel version,
IO-Link communication)
Yes
< 2 s
0 ... 150 °C
Lower: 3.5 mA
„„
Upper: 20.5 mA
„„
23 mA
0.0 s
Green
„„
Yellow
„„
Flashing red/green
„„
Flashing red
„„
Red
„„
Operating Instructions
With cooling neck, Ø6 mm tip
With cooling neck, Ø3 mm tip
Without cooling neck
Tamb Ambient temperature
Tp Process temperature
Output signal
Current output 4 ... 20 mA (2-wire)
Shunt resistance
Rs ≤ (V DC – 7 V) / 0.023 A
Min. output span 10 °C
Damping
0.0 ... 60.0 s (programmable)
Max. output error < 0.06 % FSR, @ 25 °C
Temperature drift < 0.025 °C + 0.01 % FSR / °C
(by ambient)
LED indicator (4 ... 20 mA, 2-wire)
Normal operation
Error / short circuit
Green
„„
Flashing green
„„
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