AlarmsYes
Weight, approx.180 g
Power loss, typ.1.5 W
Rated value (DC)24 V
— parameterizableNo
Diagnostics functionYes; Can be read out
Measurement principleintegrating
Current consumption, typ.40 mA
IP degree of protectionIP20
Number of analog inputs4; Thermocouples
Product type designationSM 1231, AI 4x16 bit TC
required front connectorYes
from backplane bus 5 V DC, typ.80 mA
— Input resistance (-80 mV to +80 mV)≥1 MOhm
— global warming potential, (total) [CO2 eq]43.1 kg
Temperature error (relative to input range), (+/-)25 °C ±0.1%, to 55 °C ±0.2% total measurement range
— global warming potential, (during operation) [CO2 eq]36 kg
— global warming potential, (during production) [CO2 eq]7.62 kg
Technical unit for temperature measurement adjustableDegrees Celsius/degrees Fahrenheit
— Against chemically active substances acc. to EN 60654-4Yes; Class 3 (excluding trichlorethylene)
— global warming potential, (after end of life cycle) [CO2 eq]-0.544 kg
— to chemically active substances according to EN 60721-3-3Yes; Class 3C4 (RH < 75 %) incl. salt spray acc. to EN 60068-2-52 (severity degree 3); *
— to chemically active substances according to EN 60721-3-6Yes; Class 6C3 (RH < 75 %) incl. salt spray acc. to EN 60068-2-52 (severity degree 3); *
— to biologically active substances according to EN 60721-3-3Yes; Class 3B2 mold, fungus and dry rot spores (with the exception of fauna); Class 3B3 on request
— to biologically active substances according to EN 60721-3-6Yes; Class 6B2 mold and fungal spores (excluding fauna); Class 6B3 on request
— to mechanically active substances according to EN 60721-3-3Yes; Class 3S4 incl. sand, dust, *
— to mechanically active substances according to EN 60721-3-6Yes; Class 6S3 incl. sand, dust; *
— Resistant to commercially available coolants and lubricantsYes; Incl. diesel and oil droplets in the air
permissible input voltage for voltage input (destruction limit), max.±35 V
Repeat accuracy in steady state at 25 °C (relative to output range), (+/-)0.5 %
— Environmental conditions for process, measuring and control systems acc. to ANSI/ISA-71.04Yes; Level GX group A/B (excluding trichlorethylene; harmful gas concentrations up to the limits of EN 60721-3-3 class 3C4 permissible); level LC3 (salt spray) and level LB3 (oil)
— Note regarding classification of environmental conditions acc. to EN 60721, EN 60654-4 and ANSI/ISA-71.04* The supplied plug covers must remain in place over the unused interfaces during operation!
