Operation
Modline 5
99
5.9.6
Remote Emissivity Current Input
You may make remote analog adjustments of the Emissivity value by sending a scaled input of 4 to 20
mAdc. This signal is inputted using the Orange and Orange/White twisted wire pair of the Sensor’s
interconnecting cable. The Modline 5 senses an input and overrides any rear panel or RS-485 settings of
Emissivity or Match. Wiring connection and scaling information are in Section 4
, page
5.9.7
MTCH – E-Slope or Emissivity Selection Based on Temperature Match
The MTCH function of the Modline 5 Sensor provides for adjusting the E-Slope or Emissivity values by
setting and matching the Sensor’s temperature display to the known temperature of a process target.
The Match temperature should be set with a Sensor Response Time of 100 milliseconds or faster. Peak
Picker or Track and Hold must be Off. The Match function should be set with stable process
temperatures. After setting the Match temperature, the response time, Peak Picker and Track and Hold
can be set to the values required for process temperature measurement.
Navigate from TEMP display with
&
▲▼
to Head then use
&
▲▼
to MTCH.
Display
Instructions
Display and Limits
MTCH
While viewing process target, Press ENT to view Match temperature. Use Up /
Down Arrows to adjust to the known target temperature.
Emissivity or E-Slope, if within allowed limits, will be automatically adjusted for a
matching TEMP display. During the adjustment, the Response Time should be
set to 100 milliseconds, or faster, and Peak Picker or Track and Hold signal
conditioning set to Off.
If the resulting Emissivity or E-Slope is not within allowed limits, the Match value
cannot be inputted and ERR will be seen on the display after pressing ENT
.
Return to EMIS or E-SLP to view resulting value if desired.
Temperature in ºC or ºF
XXXX
The MATCH function will not operate during Sensor Alarms X107, X106, X105, X104,
X103, X101 or a CAL (CHK). See Section 5.12
Out of Range Displays and Error Codes
page 104, for error code explanations.
5.9.8
SIGL – Signal Conditioning Selection
The Modline 5 Sensor can provide Peak Picking or Track and Hold Signal Conditioning. The SIGL
function sets the signal condition to Peak Picker, Track and Hold or Off.
Peak Picker signal conditioning is used to obtain the peak measured temperature value and ignore
momentary decreases in measured temperature. This eliminates erratic measurements due to gaps in
workpieces, bursts of smoke, or steam, or other intermittent interferences in the sight path of the Sensor.
Signal conditioning affects all displays and outputs.
Track and Hold signal conditioning is used to track process temperature when required and then hold
the temperature measurement at some point in time as determined by the process requirements. This
eliminates erratic measurements due to process measurement delays or other undesired measurement
periods.
Peak Picker and the Track and Hold signal conditioning functions are explained in Section 8
