LumaSense Technologies ISQ 5-LO - Handbuch (Seite 26)

IMPAC pyrometers ISQ 5 · ISQ 5-LO
26
11 Maintenance
11.1
Safety
Attention during pyrometer services: Should the pyrometer be integrated in a running machine process the
machine should be switched off and secured against restart before servicing the pyrometer.
11.2
Optics
The pyrometer does not have any parts which require regular service, only the lens has to be kept clean. The
lens can be cleaned with a soft cloth in combination with alcohol (do not use acid solutions or dilution). Also
standard cloths for cleaning glasses or photo objectives can be used.
12 Trouble shooting
Before sending the pyrometer for repair, try to find the error and to solve the problem with the help of the
following list.
Temperature indication too low
 Incorrect alignment of the pyrometer to the object
 New correct alignment to achieve the max. temperature signal (see 6)
 Emissivity slope set too high
 Set lower correct emissivity slope corresponding to the material (see 7.5)
Temperature indication too high
 Emissivity slope set too low
 Set lower correct emissivity slope corresponding to the material (see 7.5)
 The measurement is influenced by reflections of hot machine parts
 Use mechanical construction to avoid the influence of the interfering radiation (sighting tube)
Measuring errors
 Indicated temperature is immediately 1° below beginning of temperature range. Contamination of the
lens or broken fiber.
 Clean lens or control the fiber. Recommendation: use of air purge (see 4.1)
 Indicated temperature is immediately 1° below beginning of temperature range, although the air purge
unit is used. Probably compressed air is not clean or air failed
 Clean the lens and use clean, dry and oil free compressed air
 HF-interferences
 Correct the connection of the cable shield (see 3)
Laser targeting light
 Laser targeting light fails
 Instruments max. temperature is exceeded. Use cooling jacket (see 4.1)
13 Data format UPP  (Universal Pyrometer Protocol)
Note: The online  offline switch (DIP-switch nr. 4) must be in the online position before
adjusting the parameters “emissivity factor”, “setting measuring time” and “setting
analog output“ via the software!
Via interface and a suitable communication software or via “Test” function of the InfraWin software (see 9.7
Basic settings  Test) commands can be exchanged directly with the pyrometer.
The data exchange occurs in ASCII format with the following transmission parameters:
The data format is: 8 data bits, 1 stop bit, even parity (8,1,e)
The device responds to the entry of a command with: output (e.g. the measuring value) + CR (Carriage Re-
turn, ASCII 13), to pure entry commands with “ok” + CR.
Every command starts with the 2-digit device address AA (e.g. "00"). This is followed by 2 small command
letters (e.g. “em” for level of emissivity
 ), finished with CR.