Input - Thermocouples / Voltages; Types; Voltages; Connection Lead - ABB TTH300 Operating Instruction
Head-mount temperature transmitter
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Also See for TTH300:
- Operating instruction (74 pages) ,
- Instructions manual (26 pages) ,
- Safety instructions (24 pages)
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TTH300 HEAD-MOUNT TEMPERATURE TRANSMITTER | OI/TTH300-EN REV. G
Electrical data for inputs and outputs
Input - resistance thermometer / resistances
Resistance thermometer
•
Pt100 in accordance with IEC 60751, JIS C1604, MIL-T-24388
•
Ni in accordance with DIN 43760
•
Cu in accordance with recommendation OIML R 84
Resistance measurement
•
0 to 500 Ω
•
0 to 5000 Ω
Sensor connection type
Two-, three-, four-wire circuit
Connection lead
•
Maximum sensor line resistance
per line 50 Ω in accordance with NE 89
•
Three-wire circuit:
Symmetrical sensor line resistances
•
Two-wire circuit:
Compensation up to 100 Ω total lead resistance
Measurement current
< 300 μA
Sensor short circuit
< 5 Ω (for resistance thermometer)
Sensor wire break
•
Measuring range: 0 to 500 Ω > 0.6 to 10 kΩ
•
Measuring range: 0 to 5 Ω > 5.3 to 10 kΩ
Detection of sensor wire break in accordance with NE 89
in all lines
Sensor error signaling
•
Resistance thermometer:
Sensor short circuit and sensor wire break
•
Linear resistance measurement:
Sensor wire break
Input - thermocouples / voltages
Types
•
B, E, J, K, N, R, S, T in accordance with IEC 60584
•
U, L in accordance with DIN 43710
•
C in accordance with IEC 60584 / ASTM E988
•
D in accordance with ASTM E988
Voltages
•
−125 to 125 mV
•
−125 to 1100 mV
Connection lead
•
Maximum sensor line resistance:
per line 1.5 kΩ, total 3 kΩ
Detection of sensor wire break in accordance with NE 89
in all lines
Input resistance
> 10 MΩ
Internal reference junction Pt1000, IEC 60751 Cl. B
(no additional jumpers necessary)
Sensor error signaling
•
Thermocouple:
Sensor wire break
•
Linear voltage measurement:
Sensor wire break
Functionality input
Freestyle characteristic / 32-points-sampling point table
•
Resistance measurement up to a maximum of 5 kΩ
•
Voltages up to maximum 1.1 V
Sensor error adjustment
•
Through Callendar-Van Dusen coefficients
•
Through value table, 32 support points
•
Through single-point adjustment (offset adjustment)
•
Through two-point adjustment
Input functionality
•
1 Sensor
•
2 Sensors:
mean measurement,
differential measurement,
sensor redundancy,
Sensor drift monitoring
25
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