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SENECA - Model K121 -Loop Powered Universal Converter and Isolator
The K121 is a versatile loop-powered isolator and universal converter designed for a range of industrial applications. It facilitates the conversion and isolation of diverse input signals, including mA, V, Ohm, RTD, TC, and various thermocouples like Cu50, Cu100, Pt100, Pt500, Pt1000, Ni100, Ni120, Ni1000, and thermocouples J, K, R, S, T, B, E, N, and L. Additionally, it accommodates voltage signals with scales of ±30 V and ±150 mV and current signals up to ±24 mA. Its technical efficiency and ease of integration make the K121 ideal for industries focused on precise measurement and control panel instrumentation. With its reliable performance and broad compatibility, the K121 meets rigorous standards and demands in sectors such as energy management, automation, and environmental monitoring.
K121 supports input signals from Cu50, Cu100, Pt100, Pt500, Pt1000, Ni100, Ni120, Ni1000, TC J, K, R, S, T, B, E, N, L, potentiometer, voltage signals with ± 30 V and ± 150 mV scales and current (± 24 mA). The instrument also acquires potentiometer input with resistance between 500 Ω and 10 K Ω and resistances up to 1760 Ω. K121 features a reduced response time of only 140 ms for current and voltage input and less than 620 ms for other inputs. The accuracy class is 0.1% and the measurement conversion to 16 bit. K121 is ATEX certified II 3G Ex nA IIC T4 Gc X (gas) and II 3D Ex tc IIIC T135°C Dc X (dust).
- TECHNICAL DATA
- Power supply : 7..30 Vdc (da loop 4..20 mA)
- Hot swapping : Yes
- Max power consumption : 24 mA
- Max power dissipation : < 660 mW
- Insulation : 1,5 kVac (2 vie)
- Status LED : Anomaly
- Alarm
- Accuracy Class : 0,1%
- Input type : Cu50, Cu100
- Pt100, Pt500, Pt1000
- Ni100, Ni120, Ni1000
- TC J, K, R, S, T, B, E, N, L; input impedance 10 MΩ
- Potentiometer: 500 Ω..100 kΩ
- Voltage: -150..+150 mV; input impedance 10 MΩ
- Voltage: -30..+30 V; input impedance 200 kΩ
- Current: -24..+24mA; impedance 40Ω
- Resistance 0..+400 (1.760) Ω
- Output channel : Current 4-20 mA (passive)
- Filter : Additional for reading stabilization
- Special functions : Cold junction compensation
- Insertable filter
- Output reversal
- A/D conversion : 16 bit
- Thermal drift : <120 ppm/K
- Connection : 8 spring clamps
- Rejection : 50 o 60 Hz (programmable)
- Programming : EASY SETUP
- Insulation technique : Digital / Optocoupler
- Processing : 32 bit floating point calculation
- Protection degree : IP20
- Housing : PBT, nero
- Dimension (WxHxD) : 6,2x93,1x102,5 mm
- Weight : 45 g
- Operating temperature : -20..+65°C
- Standard : CE
- Norms : EN 61000-6-4, EN 61010-6-2, EN 61010-1
- SHIPPING AND EXPORT INFORMATION
- PRODUCT CODE : K121
- GROSS WEIGHT kg : 0.075
- ORIGIN : IT
- CN (Combined Nomenclature) : 85437090
- ECCN : EAR99