diff --git a/numass-control/vac/src/main/java/inr/numass/readvac/fx/PoweredVacuumeterView.java b/numass-control/vac/src/main/java/inr/numass/readvac/fx/PoweredVacuumeterView.java
index 219e3781..0493bac0 100644
--- a/numass-control/vac/src/main/java/inr/numass/readvac/fx/PoweredVacuumeterView.java
+++ b/numass-control/vac/src/main/java/inr/numass/readvac/fx/PoweredVacuumeterView.java
@@ -5,10 +5,13 @@
  */
 package inr.numass.readvac.fx;
 
+import java.io.IOException;
 import java.net.URL;
 import java.util.ResourceBundle;
 import javafx.beans.value.ObservableValue;
 import javafx.fxml.FXML;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.Node;
 import org.controlsfx.control.ToggleSwitch;
 
 /**
@@ -19,6 +22,21 @@ public class PoweredVacuumeterView extends VacuumeterView {
 
     @FXML
     ToggleSwitch powerSwitch;
+    
+    
+    @Override
+    public Node getComponent() {
+        if (node == null) {
+            try {
+                FXMLLoader loader = new FXMLLoader(getClass().getResource("/fxml/PoweredVacBox.fxml"));
+                loader.setController(this);
+                this.node = loader.load();
+            } catch (IOException ex) {
+                throw new RuntimeException(ex);
+            }
+        }
+        return node;
+    }    
 
     @Override
     public void initialize(URL location, ResourceBundle resources) {
diff --git a/numass-control/vac/src/main/java/inr/numass/readvac/fx/VacCollectorController.java b/numass-control/vac/src/main/java/inr/numass/readvac/fx/VacCollectorController.java
index bea9c146..abe6dd56 100644
--- a/numass-control/vac/src/main/java/inr/numass/readvac/fx/VacCollectorController.java
+++ b/numass-control/vac/src/main/java/inr/numass/readvac/fx/VacCollectorController.java
@@ -119,7 +119,7 @@ public class VacCollectorController implements Initializable, DeviceListener, Me
         this.device = device;
         device.getSensors().stream().map((sensor) -> {
             VacuumeterView controller;
-            if (sensor instanceof MKSVacDevice) {
+            if (sensor.hasState("power")) {
                 controller = new PoweredVacuumeterView();
             } else {
                 controller = new VacuumeterView();
diff --git a/numass-control/vac/src/main/java/inr/numass/readvac/fx/VacuumeterView.java b/numass-control/vac/src/main/java/inr/numass/readvac/fx/VacuumeterView.java
index 0cea5b77..356b93d1 100644
--- a/numass-control/vac/src/main/java/inr/numass/readvac/fx/VacuumeterView.java
+++ b/numass-control/vac/src/main/java/inr/numass/readvac/fx/VacuumeterView.java
@@ -33,7 +33,7 @@ import org.controlsfx.control.StatusBar;
 public class VacuumeterView extends DeviceViewController implements MeasurementListener<Double>, Initializable, Named, Annotated {
 
     private static final DecimalFormat FORMAT = new DecimalFormat("0.##E0");
-    
+
     protected Node node;
 
     @FXML
@@ -56,7 +56,7 @@ public class VacuumeterView extends DeviceViewController implements MeasurementL
 
     @Override
     public void evaluateDeviceException(Device device, String message, Throwable exception) {
-        //show dialog or tooltip
+        Platform.runLater(() -> status.setText("ERROR: " + message));
     }
 
     public Node getComponent() {
diff --git a/numass-control/vac/src/main/java/inr/numass/readvac/test/TestVac.java b/numass-control/vac/src/main/java/inr/numass/readvac/test/TestVac.java
index fe612dd7..e08a51ce 100644
--- a/numass-control/vac/src/main/java/inr/numass/readvac/test/TestVac.java
+++ b/numass-control/vac/src/main/java/inr/numass/readvac/test/TestVac.java
@@ -7,19 +7,15 @@ package inr.numass.readvac.test;
 
 import hep.dataforge.context.GlobalContext;
 import hep.dataforge.control.measurements.Sensor;
+import hep.dataforge.control.virtual.SensorFactory;
 import hep.dataforge.control.virtual.Virtual;
-import hep.dataforge.exceptions.ControlException;
 import inr.numass.readvac.devices.VacCollectorDevice;
 import inr.numass.readvac.fx.VacCollectorController;
-import java.io.IOException;
 import java.time.Duration;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 import javafx.application.Application;
 import javafx.fxml.FXMLLoader;
 import javafx.scene.Scene;
 import javafx.stage.Stage;
-import org.slf4j.LoggerFactory;
 
 /**
  *
@@ -35,8 +31,16 @@ public class TestVac extends Application {
             Sensor<Double> sensor1 = Virtual.randomDoubleSensor("vac1", Duration.ofMillis(200), 1e-5, 2e-6);
             Sensor<Double> sensor2 = Virtual.randomDoubleSensor("vac2", Duration.ofMillis(200), 2e-5, 2e-6);
             Sensor<Double> sensor3 = Virtual.randomDoubleSensor("vac3", Duration.ofMillis(200), 1e-7, 1e-8);
+            Sensor<Double> poweredSensor = new SensorFactory<Double>("vac4", (sensor) -> {
+                if (sensor.getState("power").booleanValue()) {
+                    return 1e-6;
+                } else {
+                    return null;
+                }
+            }).addState("power").build();
 
-            VacCollectorDevice collector = new VacCollectorDevice("collector", GlobalContext.instance(), null, sensor3, sensor2, sensor1);
+            VacCollectorDevice collector = new VacCollectorDevice("collector",
+                    GlobalContext.instance(), null, poweredSensor, sensor3, sensor2, sensor1);
             collector.init();
 
             FXMLLoader loader = new FXMLLoader(getClass().getResource("/fxml/VacCollector.fxml"));
diff --git a/numass-control/vac/src/main/resources/fxml/PoweredVacBox.fxml b/numass-control/vac/src/main/resources/fxml/PoweredVacBox.fxml
index 45db8e34..da965b02 100644
--- a/numass-control/vac/src/main/resources/fxml/PoweredVacBox.fxml
+++ b/numass-control/vac/src/main/resources/fxml/PoweredVacBox.fxml
@@ -1,9 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
+<?import java.lang.String?>
 <?import java.net.URL?>
 <?import javafx.scene.control.Label?>
 <?import javafx.scene.control.Separator?>
 <?import javafx.scene.layout.AnchorPane?>
+<?import javafx.scene.layout.BorderPane?>
 <?import javafx.scene.layout.Pane?>
 <?import javafx.scene.layout.VBox?>
 <?import org.controlsfx.control.StatusBar?>
@@ -16,20 +18,29 @@
     <children>
         <VBox layoutX="50.0" layoutY="6.0" prefHeight="200.0" prefWidth="100.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
             <children>
-                <Pane prefHeight="40.0" styleClass="beveled">
+                <Pane minHeight="30.0">
                     <children>
-                        <Label id="name" fx:id="deviceNameLabel" alignment="CENTER" layoutX="12.0" prefHeight="40.0" prefWidth="176.0" text="device Name" />
+                        <Label id="name" fx:id="deviceNameLabel" alignment="CENTER" prefHeight="40.0" prefWidth="200.0" text="device Name" />
                     </children>
+                    <styleClass>
+                        <String fx:value="beveled" />
+                        <String fx:value="namePane" />
+                    </styleClass>
                 </Pane>
-                <Separator prefWidth="200.0" />
-                <Pane prefHeight="60.0" styleClass="beveled">
-                    <children>
-                        <Label id="pressure" fx:id="valueLabel" alignment="CENTER_RIGHT" layoutX="14.0" prefHeight="60.0" prefWidth="90.0" text="1.22e-7" />
-                        <Label id="units" fx:id="unitLabel" layoutX="124.0" prefHeight="60.0" prefWidth="62.0" text="mbar" />
-                    </children>
-                </Pane>
-                <Separator prefWidth="200.0" />
-                <Pane VBox.vgrow="ALWAYS">
+                <Separator />
+                <BorderPane>
+                    <left>
+                        <Label id="pressure" fx:id="valueLabel" alignment="CENTER_RIGHT" prefHeight="60.0" prefWidth="100.0" text="#.##E-0" BorderPane.alignment="CENTER" />
+                    </left>
+                    <right>
+                        <Label id="units" fx:id="unitLabel" prefHeight="60.0" prefWidth="75.0" text="mbar" BorderPane.alignment="CENTER" />
+                    </right>
+                    <center>
+                        <Pane minWidth="-Infinity" prefWidth="25.0" BorderPane.alignment="CENTER" />
+                    </center>
+                </BorderPane>
+                <Separator />
+                <Pane minHeight="30.0" VBox.vgrow="ALWAYS">
                     <children>
                         <ToggleSwitch fx:id="powerSwitch" layoutX="58.0" layoutY="8.0" text="Power" />
                     </children>
diff --git a/numass-control/vac/src/main/resources/fxml/VacBox.fxml b/numass-control/vac/src/main/resources/fxml/VacBox.fxml
index fb394b36..3cc92c45 100644
--- a/numass-control/vac/src/main/resources/fxml/VacBox.fxml
+++ b/numass-control/vac/src/main/resources/fxml/VacBox.fxml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
+<?import java.lang.String?>
 <?import java.net.URL?>
 <?import javafx.scene.control.Label?>
 <?import javafx.scene.control.Separator?>
@@ -16,10 +17,14 @@
     <children>
         <VBox AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
             <children>
-                <Pane styleClass="beveled">
+                <Pane minHeight="30.0">
                     <children>
                         <Label id="name" fx:id="deviceNameLabel" alignment="CENTER" prefHeight="40.0" prefWidth="200.0" text="device Name" />
                     </children>
+                    <styleClass>
+                        <String fx:value="beveled" />
+                        <String fx:value="namePane" />
+                    </styleClass>
                 </Pane>
                 <Separator />
                 <BorderPane>
@@ -29,9 +34,9 @@
                     <right>
                         <Label id="units" fx:id="unitLabel" prefHeight="60.0" prefWidth="75.0" text="mbar" BorderPane.alignment="CENTER" />
                     </right>
-               <center>
-                  <Pane minWidth="-Infinity" prefWidth="25.0" BorderPane.alignment="CENTER" />
-               </center>
+                    <center>
+                        <Pane minWidth="-Infinity" prefWidth="25.0" BorderPane.alignment="CENTER" />
+                    </center>
                 </BorderPane>
                 <StatusBar fx:id="status" />
             </children>
diff --git a/numass-control/vac/src/main/resources/fxml/VacCollector.fxml b/numass-control/vac/src/main/resources/fxml/VacCollector.fxml
index e4dd5ac2..43ecf083 100644
--- a/numass-control/vac/src/main/resources/fxml/VacCollector.fxml
+++ b/numass-control/vac/src/main/resources/fxml/VacCollector.fxml
@@ -5,7 +5,6 @@
 <?import javafx.scene.control.Separator?>
 <?import javafx.scene.layout.AnchorPane?>
 <?import javafx.scene.layout.HBox?>
-<?import javafx.scene.layout.Pane?>
 <?import javafx.scene.layout.VBox?>
 <?import javafx.scene.text.Font?>
 
@@ -16,24 +15,24 @@
     <children>
         <HBox AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
             <children>
-                <VBox fx:id="vacBoxHolder" styleClass="beveled"/>
+                <VBox fx:id="vacBoxHolder" minWidth="200.0" styleClass="beveled" />
                 <Separator orientation="VERTICAL" />                
                 <VBox alignment="TOP_CENTER" HBox.hgrow="ALWAYS">
                     <children>
-                        <Pane prefHeight="50.0" styleClass="beveled">
-                            <children>
-                                <Label layoutX="208.0" layoutY="8.0" text="Time: ">
+                  <HBox prefHeight="50.0">
+                     <children>
+                                <Label alignment="CENTER_RIGHT" prefHeight="50.0" prefWidth="180.0" text="Time:  ">
                                     <font>
                                         <Font size="24.0" />
                                     </font>
                                 </Label>
-                                <Label fx:id="timeLabel" layoutX="271.0" layoutY="8.0" text="08.02.2016 15:57">
+                                <Label fx:id="timeLabel" prefHeight="50.0" prefWidth="312.0" text="08.02.2016 15:57" HBox.hgrow="ALWAYS">
                                     <font>
                                         <Font size="24.0" />
                                     </font>
                                 </Label>
-                            </children>
-                        </Pane>
+                     </children>
+                  </HBox>
                         <AnchorPane fx:id="plotHolder" VBox.vgrow="ALWAYS" />
                     </children>
                 </VBox>