Unit Reset; Table 5-4 Factory Default Values - Honeywell DirectLine DL421 User Manual

Operation

5.3 Unit Reset

Overview
Unit Reset initializes all of the DirectLine® Sensor's calibration and configuration
data to factory default values.
Procedure
• From the Online pH display, press and hold the
simultaneously until "rSEt" appears on the display (minimum of 10 seconds).
• "rSEt" will remain on the display until reset is complete. Next, the firmware
version number appears briefly and the unit then returns to the Online pH
display.
Zero Offset
Slope
Online Temperature
Buffer Group Selection
Solution Temperature Coefficient Selection
Noise Suppression Frequency Selection
Output Configuration – 0 % Range Value
Output Configuration – 100 % Range Value
Output Configuration – 0 % Calibration
Output Configuration – 100 % Calibration
26

Table 5-4 Factory Default Values

Data
DirectLine® DL421 Sensor Module User Manual
and buttons
2
1
Default Values
0.00 pH
100.0 %
°C
US
0.00 pH/10 °C
60 Hz
0.00 pH
14.00 pH
4.00 mA typically
20.00 mA typically
2/04