[1.5] Calibration; Calibration/Validation Overview - Siemens SIPROCESS GA700 Quick Start Manual

8.7

[1.5] Calibration

8.7.1

Calibration/validation overview

Introduction
This menu enables you to make simple calibrations or validations, for example, as part of initial
commissioning. This means the offered range of functions is very limited. Automation
functions, such as the use of the calibration pool, cannot be activated using this menu. "Factory
calibrations" also are not part of the functions included in the Quick Start menu.
You can find detailed information on how to fully access all possibilities of the calibration/
validation functions of the device in the section → [2.08] Settings > Calibrations.
Difference between calibration/validation
Calibration
In a calibration, the device is adapted to its measurement task(s). For the actual value to be
equal to the setpoint, the device changes one or more calibration factors during calibration.
Calibration parameters are assigned manually. Calibrations are distinguished by the following
features:
● Person group:
– "Customer calibrations" (zero point and/or span gas calibrations)
– "Factory calibrations" (normalization and phase calibration).
The section below only covers the area of "Customer calibrations". Information on factory
calibrations is available under → [2.20.03] Factory calibrations. Contact you Siemens sales
rep for more information.
● Single/total: Calibration of only one or all measuring ranges
● Measuring range
● Component
After the start of a calibration, a wizard in the display supports you with preset calibration steps.
Validation
You use a validation to check whether the deviation from the last calibration is still within the
validation tolerance. If the deviation is outside the validation tolerance, a new calibration is
necessary.
Validation uses the same process steps as calibration. But the validation operation checks
whether the deviation between the actual value and setpoint is still within an assignable
tolerance band. No calibration factors are changed in the process.
If a validation detects a tolerance violation, a corresponding message is output. The message
disappears after a successful calibration.
Quick Start
Compact Operating Instructions, 05/2015, A5E31805656-03
Commissioning: Sequence
8.7 [1.5] Calibration
107