Hioki MR8827, Instruction Manual

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167
Detailed Settings for Modules
8.10.3 Setting Model 8967 Temp Unit
Refer to “To Open [Each Ch] and Make a Channel Selection” (p. 164).
Mode Choose the option that matches the type of thermocouple being used.
Selections Measurement range Selections Measurement range
Temp-K
−
200°C to 1350°C Temp-R 0°C to 1700°C
Temp-J −
200°C to 1100°C
Temp-S 0°C to 1700°C
Temp-E −
200°C to 800°C
Temp-B 400°C to 1800°C
Temp-T −
200°C to 400°C
Temp-W 0°C to 2000°C
Temp-N
−
200°C to 1300°C
RJC (Reference
Junction
Compensation)
When connecting a thermocouple directly to the module, select [Int] .
Reference junction compensation is performed within the module.
When connecting through a reference junction device (e.g., a 0°C control tank), select [Ext] .
INT Reference junction compensation is provided within the module. (Default setting)
(Measurement Accuracy: The sum of the accuracies of the temperature
measurement and the reference junction compensation.)
EXT Reference junction compensation is not provided within the module.
(Measurement Accuracy: The accuracy of temperature measurement only)
Burn Out A broken thermocouple wire can be detected during temperature measurement.
Normally when a thermocouple wire breaks, measured values exhibit random instability.
Off Broken wires not detected.
On Broken wires detected.
Wire breakage is detected by sensing a miniscule current flow (about 100 nA)
through the thermocouple. If the thermocouple wires are long or composed of a
high-resistance material, set
[Burn Out]
to
[Off]
to avoid measurement errors.
Renew Data
(Data Refresh)
The data refresh rate can be set to Fast, Normal, or Slow.
The default setting is [Normal] . This allows stable measurement while eliminating noise.
For quicker response, select [Fast] , but note that this will make the measurement
more susceptible to noise. For further improved measurement stability, select [Slow] .
Fast Data is updated approximately every 1.2 ms.
Normal Data is updated approximately every 100 ms.
(Default setting)
Slow Data is updated approximately every 500 ms.
8
Utility Functions