Fluke 4180 Technical Manual page 44

4180, 4181
Technical Guide
SYST:PASS:NEW n
This command is unconditionally protected, which requires a password to set it.
Set the password, where n is the new four-digit password. Range = {0000 - 9999}; Default: 1234
Example: SYST:PASS:NEW 1234
This command has no response.
This command allows the user to set the system password.
SYST:PASS:PROT[?] [0|1]
Read or set password protection level., [0] = low, [1] = high
Read Example: SYST:PASS:PROT?
Response: 0
Set Example: SYST:PASS:PROT 1
UNIT:TEMP[?] [n]
Read or set the display temperature units, where "n" is a character "C" or "F". Default: C
Read Example: UNIT:TEMP?
Response: C
Depending on units setting, a C (Celsius) or F (Fahrenheit) is returned.
Calibration
For assistance with the process or any questions regarding the calibration of the IR Calibrator,
contact an Authorized Service Center. See
This procedure is to be considered a general guideline. Each laboratory should write their own
procedure based on their equipment and their quality program. Each procedure should be
accompanied by an uncertainty analysis also based on the laboratory's equipment and environment.
Calibrate the Product with a traceable radiometric (non-contact) calibration at the factory. This
calibration is supported by good practices including an extensive uncertainty budget. The factory
calibration is not based off of a contact calibration.
The radiometer used for the factory calibration has a spectral response of 8 µm to 14 µm. This spectral
response is used because it matches the bulk of handheld IR thermometers sold today. It is important
that the radiometer used for calibration have the same spectral response as the IR thermometer being
calibrated. If they do not have the same spectral response, this will give an IR thermometer calibration
using the Product greater uncertainty.
The radiometer must have low enough uncertainties to fit within your uncertainty budget. These
uncertainties consist of a number of items including the radiometer's calibration uncertainty and the
radiometer's long term drift. There are other uncertain- ties to consider as well.
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Note
Note
Contact Fluke Calibration.