LumaSense technologies ISR 320, Руководство пользователя

Страница: 19 / 40

ISR 320 Manual Settings / parameter descriptions
•
19
4.3 Transmittance
τ
Transmittance is a parameter that can compensate for signal loss due to external windows etc.
For example, if the emissivity of the material is 0.6 and the transmittance of an additional
window is 0.9, then the product would be 0.54 which is well inside the allowed range.
The product of transmittance and emissivity (
τ
x
ε
) must not be less than 10%
.
Note: Transmittance
τ
Settings: 10% to 100% in steps of 1/1000 (1-color mode).
4.4 Response Time (t
90
)
The response time t90 is the time interval for the analog output of the pyrometer to go from a
low temperature value up to 90% of the temperature step to a high value when measuring an
abrupt increase from said low to said high temperature.
Independently of this, the pyrometer performs a measurement every 10 ms and updates the
analog output. Slower response times can be used to achieve a constant temperature reading
for measuring objects that have rapidly fluctuating temperatures.
The response time is set using the InfraWin software or by using the UPP Data Format
commands. When the setting is set to min., the ISR 320 operates using a time constant of 10 ms.
The response time can be extended to 0.01 s; 0.05 s; 0.25 s; 1 s; 3 s; 10 s.
Note: Settings for Response Time t
90
: min, 0.01 s; 0.05 s; 0.25 s; 1 s; 3 s; 10 s
4.5 Clear Peak Memory (t
CLEAR
)
The integrated maximum value storage is activated when the parameter t
clear
is set to
something other than “OFF”.
If the maximum value storage is switched on, the highest last temperature value will always be
displayed and stored. As such, it may be beneficial to periodically clear and reset the stored
maximum values in order to obtain new temperature readings.
This storage also has to be cleared at regular intervals when fluctuating object temperatures
cause the display or the analog outputs to change too rapidly or when the pyrometer is not
constantly viewing an object to be measured.
Note: Settings for Clear Peak Memory t
CLEAR
: OFF, 0.01 s, 0.05 s, 0.25 s,1.0 s, 5.0 s,
25.0 s, AUTO
4.5.1 Single and Double Storage Modes
Depending upon the selected settings, the maximum value storage will either work in single
storage mode or in double storage mode.
Single Storage
Mode:
Single storage mode is used when a “clear command” is triggered via
Software.. This mode allows a new value to be established after each
impulse from the reset signal. Single storage mode also comes into effect
when the Clear Peak Memory t
clear
is set to AUTO.