Seneca
Seneca K121 ISOLATED 2-WIRE (LOOP POWERED) UNIVERSAL TRANSMITTER
Seneca K121 ISOLATED 2-WIRE (LOOP POWERED) UNIVERSAL TRANSMITTER
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ISOLATED 2-WIRE (LOOP POWERED) UNIVERSAL
TRANSMITTER, ATEX ZONE 2
Loop powered isolator / universal converter (mA, V, Ohm, RTD, TC)
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 |
