GE DewPro MMY31, Инструкция по установке и эксплуатации

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Optional Display/User Interface 4-7
September 2005
Mode of Operation
Table 4-4: Mode of Operation Functions
Function Location Description
Input Locking VH 89
Any number other than “50” will lock the instrument settings from
inadvertent or unauthorized changes. (The instrument is unlocked only
at “50.”)
Displaying
the Present
Error Code
VH 90
In the event of a system fault, this field displays the diagnostic error
code for the fault encountered.
Error
Code
Description
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
v
mode and has fallen off of
the internal vapor pressure table.
4
ppm
v
overrange. The current output has exceeded the 20 mA
level. Re-range the ppm
v
upper scaling limit in V1H2 to
keep this error from occurring.
5
Sensor is shorted.
6 Sensor is open.
Displaying
the Previous
Error Code
VH 91
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.
Instrumentation
Identification
Number
VH 92
The instrumentation identification number should always read “100.”
Identification
Field
VH 93
This field indicates the software version (i.e., version 3.0 or higher).
Set to Default
Values
VH 94
This field sets all factory defaults.
Note: Anything that has been calibrated will not be reset.
Resetting the
Device
VH 99
The device is reset in this field by entering 50.
Note : Reset the device only after field calibration, using the MMY 245
validator.