Panametrics DewPro MMY30, Руководство пользователя, Страница: 30 / 43

Chapter 4. Optional Display/User Interface (Option G or H)
22 DewPro
®
MMY30 User’s Manual
4.5.3 Mode of Operation
4.5.3.1 Input Locking
4.5.3.2 Displaying the Present Error Code
4.5.3.3 Displaying the Previous Error Code
4.5.3.4 Instrumentation Identification Number
4.5.3.5 Identification Field
VH 89 Any number other than “50” will lock the instrument settings from inadvertent or unauthorized changes.
(The instrument is only unlocked at a value of “50.” )
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 4.00 mA.
2 Dewpoint overrange. The current output has exceeded 21.92 mA.
3 The instrument is no longer reading between –90 and –20°C dewpoint while in ppm
v
mode and
outside the range of the internal vapor pressure table.
4 ppm
v
overrange. The current output has exceeded 20 mA. Change the ppm
v
upper scaling limit
in V1H2 to keep this error from occurring.
5 Sensor is shorted.
6 Sensor is open.
VH 91 When a system fault condition is cleared, the value of the error code is stored in this location. During
normal operation, the most recent error code is displayed for reference.
VH 92 The instrument identification number should always read “100.”
VH 93 This field indicates the software version, for versions 2.02 or higher.