Ametek Thermox WDG Insitu, Руководство пользователя

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Calibration | 5-3
Types of Calibrations
The Series 2000 control unit allows you to perform automati c, remot e, or
manual calibrations. Automatic and remote calibrations require a factory-
provided remote calibration unit (RCU) that automatically switches the
calibration gases for you; manual calibrations are performed without an
RCU, and gases are switched manually.
•
Automatic calibrations allow the system to calibrate itself. You define the
calibration gas values, the time each gas will flow through the sensor,
and the frequencies at which automatic calibrations will be performed
(for example, every four hours, every two days, etc.). The system cali-
brates itself at those predefined times. You can also use a digital input
to activate an automatic calibration (see the “Remote Calibration Unit
Connections” section in the Chapter 2). With the digital input method,
you can only initiate an automatic calibration, not an automatic veri-
fication. You can also start an auto calibration using the keypad - the
calibration gas run times are predetermined.
•
For remote calibration s, you define the calibration gas values, but you
interactively determine how long each calibration gas should flow
from the RCU and into the sensor (by pressing a key on the control
unit).
•
For a manual calibratio n, you must physically switch the gases because
you are not using an RCU. However, you still define the calibration
gas values.