JUMPFLEX® measuring transducer Isolating amplifier, permanently set for current signals or voltage signals Brief description: The pre-configured isolating amplifiers convert analogue standard signals and amplify, filter and galvanically isolate the analogue standard signals from one another. The devices have a 3-way isolation with a test voltage of 2.5 kV. Isolating amplifier 857-411 isolates analogue current signals in the range of 0(4) ... 20 mA in the input to 0(4) ... 20 mA in the output. Isolating amplifier 857-412 isolates analogue voltage signals in the range of 0(2) ... 10 V in the input to 0(2) ... 10 V in the output. The supply voltage for the device, which can be bridged quickly and cost-effectively via side push-in type jumper bars, is 24 V DC. A green LED on the front of the device signals that it is in operation. The isolating amplifiers meet the requirements of safe isolation as per EN 61140 with a test voltage of 2.5 kV between input/output/supply. Dimensions (mm) W x H x D: 6 x 96 x 94 (height from the top edge of the mounting rail) Connection technology: CAGE CLAMP®S Single-wire cross-sections: 0.08 mm² ... 2.5 mm²/AWG 28 ... 12 Fine-stranded cross-sections: 0.34 mm² ... 2.5 mm²/AWG 22 ... 12 Insulation stripping lengths 9 ... 10 mm/0.37 in Input signal: 0(4) ... 20 mA (857-411), 0(2) ... 10 V (857-412) Input resistance: 50 O, 100 kO Output signal: 0(4) ... 20 mA (857-411), 0(2) ... 10 V (857-412) Apparent ohmic resistance: 600 O (857-411), 2 kO (857-412) Limit frequency: 100 Hz Time setting (T10 - 90): < 3.5 ms Supply voltage: UN DC 24 V Supply voltage range: 16.8 V ... 31.2 V Power consumption at 24 V DC: < 25 mA Transmission error: < 0.1 % from end value Temperature coefficient: 0.01 %/K Test voltage (input/output/supply): 2.5 kV AC, 50 Hz, 1 min. Ambient temperature: -25°C ... +70°C Storage temperature: -40°C ... +85°C https://elecena.pl/product/9723362/857-411-isolating-amplifier-permanently-set-for-current-signals 2017-08-06 https://elecena.pl/product/9723362/857-411-isolating-amplifier-permanently-set-for-current-signals 2017-10-18 https://elecena.pl/product/9723362/857-411-isolating-amplifier-permanently-set-for-current-signals 2018-02-22 https://elecena.pl/product/9723362/857-411-isolating-amplifier-permanently-set-for-current-signals 2018-06-14 https://elecena.pl/product/9723362/857-411-isolating-amplifier-permanently-set-for-current-signals 2018-12-16 https://elecena.pl/product/9723362/857-411-isolating-amplifier-permanently-set-for-current-signals 2019-05-08 https://elecena.pl/product/9723362/857-411-isolating-amplifier-permanently-set-for-current-signals 2021-04-29 https://elecena.pl/product/9723362/857-411-isolating-amplifier-permanently-set-for-current-signals 2021-11-17 https://elecena.pl/product/9723362/857-411-isolating-amplifier-permanently-set-for-current-signals 2022-07-20 https://elecena.pl/product/9723362/857-411-isolating-amplifier-permanently-set-for-current-signals 2024-02-03 https://elecena.pl/product/9723362/857-411-isolating-amplifier-permanently-set-for-current-signals 2024-06-19 https://elecena.pl/product/9723362/857-411-isolating-amplifier-permanently-set-for-current-signals 2025-01-30 https://elecena.pl/product/9723362/857-411-isolating-amplifier-permanently-set-for-current-signals 2026-02-21