# Analog output calibration

This function is enabled by:

- Operations->Basic functions->Analog output calibration.

If process variables continuous reading is enabled, a warning message will be displayed. To continue, un-check the continuous reading in the field Continuous reading in the process variables window.

Calibration eliminates errors e.g. sensor and whole computing track aging errors.

### 1. Start

When you start a calibration wizard, a start-up widow is displayed.
The calibrated transmitter cannot be connected to a control loop.

Click the button Next, and the wizard will go to the next step.
If you choose Cancel, the wizard will be closed and you will return to the main window.

### 2. Current calibration – lower calibration point.

You should follow the wizard instructions.

After entering electric current value for lower calibration point in the field Calibration point, choose the button Next.
The transmitter will produce the adjusted current value. The transmitter can reject the adjusted value; this will indicate that the value is too high or too low.

If you choose Back, the wizard will come back to the previous step. If you choose Cancel, the wizard will be closed and you will return to the main window.

Example: For a transmitter with 4...20mA output, the value must equal 4 mA

### 3. Current calibration – lower calibration point - continuation.

You should follow the wizard instructions. When miliammeter readings are stabilized and entered into the field Measured current value, choose the Send button.
The transmitter can reject the value. This can indicate incorrect configuration, or improper transmitter / ammeter operation.

Click the button Next, and the wizard will go to the next step.
If you choose Back, the wizard will come back to the previous step. Note: this will not delete the command Send.
If you choose Cancel, the wizard will be closed and you will return to the main window.

### 4. Current calibration – upper calibration point.

You should follow the wizard instructions.

After entering electric current value for lower calibration point in the field Calibration point, choose the button Next.
The transmitter will produce the adjusted current value. The transmitter can reject the adjusted value; this will indicate that the value is too high or too low.

If you choose Back, the wizard will come back to the previous step. If you choose Cancel, the wizard will be closed and you will return to the main window.

Example: For a transmitter with 4...20mA output, the value must equal 20 mA

### 5. Current calibration – upper calibration point - continuation.

You should follow the wizard instructions. When miliammeter readings are stabilized and entered into the field Measured current value, choose the Send button
The transmitter can reject the adjusted value. This can indicate incorrect configuration, no zeroing, or improper transmitter / ammeter operation.

Click the button Next, and the wizard will go to the next step.
If you choose Back, the wizard will come back to the previous step. Note: this will not delete the command Send.
If you choose Cancel, the wizard will be closed and you will return to the main window.

### 6. Final step.

At the end, a summary is displayed.
The button End finishes calibration.
The button Back returns to the previous step of the wizard.
If you choose Cancel, the wizard will be closed and you will return to the main window.

Note: Cancelling calibration is possible with the command Cancel analog output calibration in Transmitter parameters window