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Range
Resolution
Automatic wire detection
Measuring current
A.7.2
Measurement by Thermocouple (Temperature)
•
Display the MEASUREMENT MENU dialogue box:
•
Select the Tc measurement function, then the appropriate "type of thermocouple" using the function and navigation keys.
•
Select the display unit
•
Select the type of cold junction (CSF) used. Enter the temperature of the cold junction in the case of a programmed cold junction.
•
Confirm with ENTER.
The thermocouples available are: K, T, J, E, N, U, L, S, R, B, C, PL, Mo, NiMo/NiCo.
After a significant thermal shock, it is recommended that the unit is left for the temperature to stabilise in order to use the internal cold
junction (CSF) with maximum accuracy.
Note:
By changing the display unit to VOLT and programming CSF OFF, voltages between – 10 mV and + 75 mV can be measured.
Range
Resolution
Input impedance
A.7.3
Thermistor Measurement (Temperature)
•
Display MEASUREMENT MENU dialogue box:
•
Select Thermistor "measurement function, then select Auto, 2-Wire, 3-Wire or 4-Wire connection with the function and navigation keys.
•
Enter coefficients corresponding to thermistor Coeff. A, Coeff. B and Coeff. C.
•
Confirm with ENTER.
Wiring diagram is automatically detected by the calibrator. The THERMYS 150 displays an icon showing the connection used to carry out measurement
(
for 2 wires,
for 3 wires or
To avoid errors when measuring with 3 wires, the following is recommended:
•
Measure using conductors with same length, same diameter and same type.
•
Clean connections to avoid development of spurious electromotive force (emf).
•
Use Y-shaped lugs to reduce connector resistance.
Measurement on channel V1 or V2
400 ohms
(probe type: PT100)
1 mohm
2, 3 and 4 wires
0.2 to 0.45 mA
Max. 75 mV depending on the type of thermocouple used (TC
measurement function)
1 uV
> 10 MΩ
for 4 wires).
3600 ohms
(probe type: PT1000)
10 mohm
2, 3 and 4 wires
0.2 to 0.45 mA
A
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