Download System 2 Hygrometer - GE Measurement & Control

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Introduction
The Panametrics System 2 hygrometer is the most sophisticated offthe-shelf moisture measuring instrument on the market. This high
level of sophistication is accomplished without a complicated user
interface by employing a microcomputer to control functions and
instrument operating characteristics. The front panel of the System 2
is therefore simple, consisting of a power switch, panel lock, keypad
and display.
As discussed in Chapter 1, a User Program controls the operating
profile and calibration of the instrument by allowing you to enter
system parameters. These parameters are stored in battery-powered
random access memory, so they are retained when system power is
turned off.
This section gives you an overview of how to access, and if
necessary, enter new system parameters through user programming.
Why User
Programming?
The user program lets you enter many of the System 2 operating
characteristics. Some of the operating characteristics the user
program allows you to change are the displayed parameters, the
output parameter and setpoint on which alarms will trip. User
Programming also allows you to select only the types of probes you
need (eliminating unnecessary processing time) and to set the
conditions for automatic procedures such as periodic auto-calibration
or error handling.
Although you may never need to reprogram the System 2 (we ship all
System 2 hygrometers, whether new units or repairs, fully
programmed and ready to use), this capability can be extremely
useful and is invaluable in troubleshooting.
Accessing the User
Program
You can modify the user program directly from the front panel, or, if
desired, by remote via a separate computer terminal.
To use a separate computer terminal, you will need an optional (No.
5) UART card. For more information on using a remote terminal or
computer with the System 2, see Chapter 6.
The front panel keypad and display allows access and reprogramming
of any available function. However, since changes to the User
Program can affect the operation and/or the calibration of the
hygrometer, a lockout switch prevents unauthorized access to this
feature.
User Programming
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