LumaSense Technologies ISR 12-LO - Handbuch (Seite 25)

IMPAC pyrometers ISR 12-LO · IGAR 12-LO
24
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 6.2)
• Incorrect focusing of the optics
⇒ Focus correctly to the measuring distance, if necessary change lens (see 5.4, 6.2)
• Emissivity slope set too high
⇒ Set lower correct emissivity slope corresponding to the material (see 9.1
Temperature indication too high
• Emissivity slope set too low
⇒ Set lower correct emissivity slope 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 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 5.5)
• 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 4)
14 Data format UPP ® (Universal Pyrometer Protocol)
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
ε
), finished with CR
This is followed, if necessary for that command, by the ASCII parameter "X". If this parameter "X" is omitted,
then the device resets with the current 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 (
ε
) 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)
in the selected measuring mode
(77770 = warm-up period of sensor or sensor heating failed
88880 = temp.-overflow,
80000 = targeting light on (only ISR 12-LO))
Reading temperature
value repeated: AAmsXXX XXX = 001 ... 999 (XXX = number of measuring values)
Reading measuring
values: AAek Output: XXXXXYYYYY (dec., in 1/10 °C or °F)
XXXXX = mono temperature;
YYYYY = ratio temperature
(77770 = warm-up period of sensor or sensor heating failed
88880 = temp.-overflow,
80000 = targeting light on (only type ISR 12-LO))