General information
70 TTF300
OI/TTF300-EN
14.5 Operating influences
The percentages refer to the configured measuring span.
Supply voltage influence / load influence:
within the specified limits for the voltage / load. the total influence is less than 0.001 % per volt
Common-mode interference:
No influence up to 100 Veff (50 Hz) or 50 VDC
Ambient temperature influence:
based on 23 °C (73.4 °F) for ambient temperature range -40 ... 85 °C (-40 ... 185 °F)
4)
Sensor
Ambient temperature influence
for 1 °C (1.8 °F) deviation to 23 °C (73.4 °F) for digital
measurement
Ambient temperature influence
1) 2)
for 1 °C (1.8 °F) deviation to 23 °C
(73.4 °F) for D/A converter
Resistance thermometers
for two-. three-. four-wire circuits
Pt10 IEC. JIS. MIL
± 0.04 °C (± 0.072 °F)
± 0.003 %
Pt50 IEC. JIS. MIL
± 0.008 °C (± 0.014 °F)
± 0.003 %
Pt100 IEC. JIS. MIL
± 0.004 °C (± 0.007 °F)
± 0.003 %
Pt200 IEC. MIL
± 0.02 °C (± 0.036 °F)
± 0.003 %
Pt1000 IEC. MIL
± 0.004 °C (± 0.007 °F)
± 0.003 %
Ni50 DIN 43760
± 0.008 °C (± 0.014 °F)
± 0.003 %
Ni100 DIN 43760
± 0.004 °C (± 0.007 °F)
± 0.003 %
Ni120 DIN 43760
± 0.003 °C (± 0.005 °F)
± 0.003 %
Ni1000 DIN 43760
± 0.004 °C (± 0.007 °F)
± 0.003 %
Resistance measurement
0 ... 500
Ω
±
0.002
Ω
± 0.003 %
0 ... 5000
Ω
±
0.02
Ω
± 0.003 %
Thermocouple. for all defined
types
± [(0.001 % x (ME[mV] / MS[mv]) + (100 % x (0.009 °C / MS [°C])]
3)
± 0.003 %
Voltage measurement
-125 ... 125 mV
± 1.5 µV
± 0.003 %
-125 ... 1100 mV
± 15 µV
± 0.003 %
1) percentages refer to the configured measuring span of the analog output signal
2) effect on DA converter
3) ME = measuring end. MS = measuring span
4) In the case of the option to expand the ambient temperature range up to -50 °C (-58 °F), the causal variables are doubled in the range
between -50 ... -40 °C (-58 ... -40 °F)
When calculating the influence of the ambient temperature. ME and MS correspond to the measuring ranges of the sensor. as defined by the
relevant standard.
