LumaSense Technologies ISQ 5-LO - Handbuch (Seite 15)

IMPAC pyrometers ISQ 5 · ISQ 5-LO
15
7 Instrument settings
7.1
Controls and switches
The controls/switches are located under the rear cover of the pyrometer and can be accessed by removing
the rear cover. To remove the rear cover unscrew both rear screws and take the cover off, making sure it
remains straight (without bending or twisting it).
Caution: Disconnect the cable before opening the cover.
When reassembling the cover, insert it carefully into the guide pin and then fasten it with the screws. After
that the connector cable can be plugged in!
7.1.1
Overview instrument settings
7.2
Operating mode online  offline (DIP switch nr. 4)
Offline (switch settings are valid): When switched to the offline mode, the DIP
switches are used to set the values for emissivity slope K, response time (t
90
) and the
current output (0 or 4 to 20 mA). In the offline mode, these parameters can not be ad-
justed via the digital interface - they can only be read! This function prevents incorrect
set-up or undesired changes via the interface. However, the other parameters can still
be altered via the interface (see 8, Software settings).
Online (computer-settings are valid (factory setting)): When switched to the online
position, only the digital interface can be used to set the values for the parameters - the
DIP switch settings and the instrument’s controls are ignored. The device is initialised in
“online” mode.
7.3
Analog output 0...20  4...20 mA (DIP switch nr. 3)
When the switch is in the ON position, the analog output will be 0 to 20 mA; in the Off
position, the analog output will be 4 to 20 mA. The analog output has to be selected
according to the signal input of the connected instrument (controller, PLC, etc.).
Note: If the settings directly at the pyrometer should be used the
pyrometer must be switched into offline mode
Note: At 70°C, a thermal switch is activated at the 4 ... 20 mA output which sets the output
to 0 mA (simulates a “sensor break”).
7.4
Response time t
90
(DIP switches nr. 1 + 2)
The response time t
90
is the time interval for the output of the pyrometer to go from the
lowest value in the pyrometer's measuring range up to 90% of the highest value in its
measuring range, when measuring an abrupt increase in temperature. (2 x t
90
= 99%; 3 x
t
90
= 99.9% etc.). Independently of this, the pyrometer performs a measurement every 1
ms and updates the analog output. Longer response times can be used to achieve con-
stant temperature reading if measuring objects have rapidly fluctuating temperatures.
The DIP switches can be used to set the response time. Select the respective jumper
position:
Settings:
Online Offline
Settings:
4...20 mA
0...20 mA
Settings:
Example:
t
90
= 1s
t
90
[s]: DIP switches 1+2 for setting the
response time t
90
0...20  4...20 mA: DIP switch 3
for setting the analog output to
0 ... 20 mA or 4 ... 20 mA
online  offline: DIP switch 4
for changing Online- / Offline mode
Range switch for rotary switches:
1,0XX: 1.000 … 1.099
0,9XX: 0.900 … 0.999
Rotary switch for emissivity slope K= 
1
/ 
2