Calibration, Maintenance, and Troubleshooting
1919-R User Manual
91
12.1
Updating Sensor Calibration Factors
The following procedure describes the general steps for updating sensor calibration factors. For
sensor-specific calibration, see
Calibration of Thermopile Sensors
Calibration of Pyroelectric Sensors
To update sensor calibration factors:
1.
Press
Menu
and select
Calibration
.
2.
Press
Continue
twice to activate calibration. The information screens vary per sensor.
3.
The main Measurement screen appears, displaying the
Calibration Factor
value (on the left).
4.
Press
Modify
. The screen displays the
Original
(current) reading and factor (on the left side of
the screen), and
Updated
factor and its effect on the reading (on the right). The
Updated
box
is highlighted, indicating it is modifiable.
5.
In the
Updated
area, use the Right/Left arrows to select the digit to update. Use the Up/Down
arrows to change the value of the selected digit.
6.
Press
Save
to save the settings and return to the main Measurement screen, which now
displays the updated Calibration Factor.
7.
Press
Exit
to return to the Menu screen.
12.2
Calibration of Thermopile Sensors
Two types of absorber surfaces are used in Newport Thermopile sensors:
12.2.1
Surface Absorbers
BB (Broadband) Absorber
On standard, high power density, broadband Newport power monitor sensors, a special refractory
coating is used to provide high absorptivity from the UV through the IR. This coating can withstand
very high power densities, up to 28 kW/cm², without changing calibration. The absorption of this
coating is above 85% for most of its range, as shown in
