Instruction manual MM850618 ed. 01e
33
Ambient temperature compensation:
In dependence on the emissivity value a certain amount of ambient radiation will be reflected from the object
surface. To compensate this impact, the
IRtec
Connect software provides the feature Ambient control (middle
of the window Signal processing):
internal (Head):
The ambient temperature will be taken from the head-internal Pt1000 probe
(factory default setting).
external:
The ambient temperature will be determined by a voltage on the functional
input-pin F3
(0-5 V; according to the measurement range of theIRtec Rayomatic 14). With
an external probe or with a second
IRtec
a real-time ambient temperature
compensation can be realized.
fixed value:
In the edit box Value a fixed value can be entered (if the ambient radiation is
constant).
NOTE: Especially if there is a big difference between object and head temperature the use of Ambient control
with external input or fixed value is recommended.
7.2
Signal Post Processing
The post processing supplies some functions to process data after the basic temperature calculation. The
following table shows these functions:
Modus
Average Time
Hold Time
Threshold
Hysterese
Off
Averaging X
Peak hold
X
X
Valley hold
X
X
Advanced peak hold
X
X
X
Advanced valley hold
X
X
X
Tab. 7-1: Post processing modes and the used parameters
NOTE:
With the menu item Measuring/ Signal Processing Monitor you can open a utility to monitor the behavior of the
signal post processing. It always shows the Current Temperature
(w/o post processing) and the Process
Temperature (with post processing) as a value and as a graph. The temperature range is adjustable with the
sliders.
If the post processing mode is
Off
no post processing will be done.
Averaging:
In the mode
Averaging
a plain arithmetic algorithm will be performed to smoothen the signal. The Avg. time is
the time constant. This function can be combined with all other post processing functions.
Peak hold:
In the mode
Peak hold
the
IRtec
unit is waiting for descending signals. If the signal descends the algorithm
maintains the previous signal peak for the specified hold time.
Fig. 7-7: Signal graph with Peak hold (left) and Valley hold (right)/ Hold time = 3 s
Valley hold:
Summary of Contents for IRtec Rayomatic 14 MK2
Page 1: ...IRtec Rayomatic 14 MK2 Process IR temperature transmitters Instruction Manual MM850618 ed 01e ...
Page 21: ...Instruction manual MM850618 ed 01e 21 6 1 1 A Parameter settings for head changing ...
Page 24: ...Instruction manual MM850618 ed 01e 24 6 1 5 E Display settings ...
Page 25: ...Instruction manual MM850618 ed 01e 25 6 1 6 F Set settings ...
Page 44: ...Instruction manual MM850618 ed 01e 44 Double click System to open it Select Hardware ...
Page 55: ...Instruction manual MM850618 ed 01e 55 APPENDIX ...