LumaSense Technologies IS 12-TSP - Handbuch (Seite 22)

IMPAC pyrometers IS 12-TSP · IGA 12-TSP
22
13 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)
 Incorrect focusing of the optics
 Focus correctly to the measuring distance, if necessary change lens (see 7, 12.3)
 Measuring object smaller than spot size
 Change lens and measuring distance (see 7, 12.3)
 Emissivity set too high
 Set lower correct emissivity corresponding to the material (see 9.1)
 Lens contaminated or scratched
 Clean lens carefully or replace it (see 12.2, 12.3)
Temperature indication too high
 Emissivity set too low
 Set lower correct emissivity corresponding to the material (see 9.1)
 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 decreasing during the use of the pyrometer, contamination of the lens
 Clean lens (see 12.2)
 HF-interferences
 Correct the connection of the cable shield (see 4)
 Instrument overheated
 Instrument too close to the calibration source. Choose a farther position. If necessary change the op-
tics (see 12.3)
 Temperature Indication is fluctuating during alignment to the calibration source
 Calibration source has a non-uniform temperature distribution
Laser targeting light
 Laser targeting light fails
 Instruments temperature above 55°C. Choose a farther position to the calibration source
14 Data format UPP ® (Universal Pyrometer Protocol)
Via interface and a suitable communication software or via “Test” function of the InfraWin (see 10.6, 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 emissivity), followed, if necessary for that com-
mand, by the ASCII parameter “X” and finished with CR. If this parameter “X” is omitted, then the device
answers with the current set parameter.
A „?“ after the small command letters answers with the respective settings (only at setting commands, not at
enquiry commands).
Example: Entry: “00em“ + CR
The emissivity setting (  ) of the device with the address 00 is returned
Answer: “0970“ + CR means Emissivity = 0.97 or 97.0%
Description Command Parameters
Reading temperature
value: AAms Output: XXXXX (dec., in 1 /
10
°C or. °F)
last digit is the decimal place
(88880 = Temp.-Overflow)