Technical data Ecograph T, RSG35
66 Endress+Hauser
Measured variable Limit values (steady-state, without
destroying input)
Cable open circuit detection/line influence/temperature compensation
Resistance
thermometer (RTD)
Measuring current: ≤1 mA Maximum barrier resistance (or line resistance):
4-wire: max. 200 Ω; 3-wire: max. 40 Ω
Maximum influence of barrier resistance (or line resistance) for Pt100, Pt500
and Pt1000: 4-wire: 2 ppm/Ω, 3-wire: 20 ppm/Ω
Maximum influence of barrier resistance (or line resistance) for Pt46, Pt50,
Cu50, Cu53, Cu100 and Cu500: 4-wire: 6 ppm/Ω, 3-wire: 60 ppm/Ω
Cable open circuit monitoring if any connection is interrupted.
Thermocouples (TC) Maximum permitted input voltage: 24 V Influence of line resistance: <0.001%/Ω
Error, internal temperature compensation: ≤ 2 K
Scan rate
Current/voltage/pulse/frequency input: 100 ms per channel
Thermocouples and resistance temperature detector: 1 s per channel
Data storage/save cycle
Selectable save cycle. Choose from: 1s / 2s / 3s / 4s / 5s / 10s / 15s / 20s / 30s / 1min /
2min / 3min / 4min / 5min / 10min / 15min / 30min / 1h
Typical recording duration
Prerequisites for following tables:
• No limit value violation / integration
• Digital input not used
• Signal analysis 1: off, 2: day, 3: month, 4: year
• No active mathematics channels
Frequent entries in the event log reduce the memory availability!
128 MB internal memory:
Analog inputs Channels in groups Storage cycle (weeks, days, hours)
5 min 1 min 30 s 10 s 1 s
1 1/0/0/0 668, 4, 14 135, 0, 5 67, 4, 4 22, 3, 20 2, 1, 18
4 4/0/0/0 491, 0, 10 99, 4, 17 49, 6, 12 16, 4, 15 1, 4, 16
8 4/4/0/0 246, 1, 14 49, 6, 1 24, 6, 19 8, 2, 7 0, 5, 20
12 4/4/4/0 164, 2, 4 33, 1, 18 16, 4, 13 5, 3, 21 0, 3, 21
External memory, 1 GB SD card:
Analog inputs Channels in groups Storage cycle (weeks, days, hours)
5 min 1 min 30 s 10 s 1 s
1 1/0/0/0 12825, 5, 20 2580, 4, 18 1291, 2, 5 430, 4, 14 43, 0, 12
4 4/0/0/0 8672, 5, 12 1749, 6, 13 875, 6, 13 292, 1, 8 29, 1, 14
8 4/4/0/0 4343, 1, 1 875, 1, 17 438, 0, 6 146, 0, 17 14, 4, 7
12 4/4/4/0 2896, 6, 13 583, 3, 21 292, 0, 6 97, 2, 20 9, 5, 4
The available storage capacity of the internal and external memory can be displayed
in the main menu under "Diagnostics → Device information → Memory
information". The storage capacity depends on the specific device set-up.
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