Mode Of Operation - GE DewPro MMY31 Installation And Operation Manual

Mode of Operation

Function Location
Input Locking VH 89
Displaying
the Present VH 90
Error Code
Displaying
the Previous VH 91
Error Code
Instrumentation
VH 92
Identification
Number
Identification
VH 93
Field
Set to Default
VH 94
Values
Resetting the
VH 99
Device
Optional Display/User Interface
Table 4-4: Mode of Operation Functions
Any number other than "50" will lock the instrument settings from
inadvertent or unauthorized changes. (The instrument is unlocked only
at "50.")
In the event of a system fault, this field displays the diagnostic error
code for the fault encountered.
Error
Code
0
No error.
1 Dewpoint underrange. The current output has fallen below
the 4.00 mA point.
2
Dewpoint overrange. The current output has exceeded the
21.92 mA level.
3
The instrument is no longer reading between –90° and
–20°C dewpoint while in ppm
the internal vapor pressure table.
4
ppm overrange. The current output has exceeded the 20 mA
v
level. Re-range the ppm
keep this error from occurring.
5
Sensor is shorted.
6
Sensor is open.
When a system fault condition is cleared, the value of the error code is
stored in this location. That is, during normal operation, the most
recent error code is displayed for reference.
The instrumentation identification number should always read "100."
This field indicates the software version (i.e., version 3.0 or higher).
This field sets all factory defaults.
Note: Anything that has been calibrated will not be reset.
The device is reset in this field by entering 50.
Note: Reset the device only after field calibration, using the MMY 245
validator.
Description
Description
mode and has fallen off of
v
upper scaling limit in V1H2 to
v
September 2005
4-7