Creative Product Design Our Ref. DR51-0033-01 4 June 2003 VPR100 Wireless Vacuum Sensor Operating Instructions. This document is for use in field trials of the Sensors and as a basis for a formal user manual. It is not intended for use by the general public or to be supplied with production units. In particular error and calibration information should only be made available to DeLaval staff. Controls and Indicators. The Sensor has only a single button and two LEDs for status indication. Detailed status information is displayed on the VPR100 Sensor Status screen. Power On/Off Button I 0
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& ID Battery Level LED Wireless Activity LED The button is used to turn the sensor on/off and initiate various special functions by holding the button down. The Battery LED normally shows the state of the batteries, but also shows special status indications in conjunction with the other LED. The Wireless LED flashes when information is being received from the VPR100. It is primarily used to show that the Sensor is within range of the VPR100 and reception is not being blocked by metal objects nearby. Turning the Sensor On. 1. Make sure fresh batteries are installed. It requires two AA cells which can be normal 1.5V Alkaline or 1.2V NiCd/NiMH rechargables. DO NOT use 3V Lithium cells or mix different types in the same Sensor. 2. Press the button to turn the unit on. The Battery LED will give a long blink on startup
(Green for 868MHz European units, Orange for 915MHz Nth/Sth American, Australian and NZ units), after which it should give a short blink every 2 seconds if the battery level is good. 82 Victoria Street, Sandringham 3191 Victoria Australia Intl +61 3 9521 9383 Toll free 1 800 061 167 Fax +61 3 9521 8009 A.C.N. 050 028 423 1 Registering the Sensor on the VPR100. Before the Sensor can be used it must be registered on the VPR100. Registration is only done once when a new sensor is being used for the first time. Up to 9 sensors can be registered, but at this point only the first two are used. Readings from the first two sensors in the list are shown as Ext 1 and Ext 2 in Airflow and Vacuum Modes. 1. Turn on the VPR100 and select Setup - Sensor Setup
. 2. With the Sensor turned on, press and hold the button until the Battery LED shows Orange. 3. The VPR100 should beep and the sensor will appear on the screen with its type and ESN. A tick should be shown in the box on the left-hand side. The Wireless LED should be blink Red showing the Sensor is communicating with the VPR100. 4. The Sensor Information icon should appear
. Press it and a pop-up window shows status information about the Sensor such as Battery Voltage, software version, sensor temperature, etc. 5. Press the Info icon again to remove the window. It will also automatically clear after a few seconds. 6. Exit the Sensor Setup screen and the sensor will be saved into VPR100 memory. Using the Sensor. The sensors can be used in the VPR100s Vacuum and Airflow Modes only. 1. Connect the sensor port tubing to the desired location and turn it on. 2. Make sure the Battery LED is blinking Green and the Wireless LED is blinking showing the Sensor is talking to the VPR100. 3. In Vacuum and Airflow modes readings from the first two sensors in the Sensor Setup list will be shown under Ext 1 and Ext 2 respectively. Turning the Sensor Off. The sensor can be manually turned off using the button. It will automatically go off if has not received any communications from the VPR100 after 10 minutes to conserve battery life. Battery Level Indication. The sensors battery level is displayed on both the Sensors Battery Level LED and the VPR100. Batteries Good:
The Battery Level LED will blink Green each 2 seconds and readings on the VPR100 will be shown normally with the units (kPa or inHg) visible. Batteries Low:
The Battery Level LED will change to Orange and blink faster (1 sec) to warn the user to change the batteries. The units next to the vacuum reading on the VPR will change to [BAT]. Replace Batteries. When the battery level is too low for use the LED will blink Red twice per second. No reading will be displayed on the VPR100 and the units will change to [RPL]. The batteries must be replaced before the sensor can be used again. 2 Low Temperature Indication. The sensor includes temperature measurement to check if it is too cold for accurate vacuum reading. The VPR100 shows the condition by replacing the units (kPa or inHg) next to the reading in Vacuum or Airflow Mode, with [C]. There is no indication on the Sensor itself. If [C] appears on the VPR100 the sensor should be warmed until the normal units returns. The actual temperature value is displayed in the Info window of Setup Sensor. Zero Adjustment. If there is no vacuum on the port when the sensor it turned on it will automatically adjust its zero level to suit the atmospheric pressure at the time. If there was a small vacuum on the port when the unit was turned on, the atmospheric pressure has changed or the Sensors temperature has changed significantly it may show a small pressure offset. Remove the tube from the port, press and hold the Button for more than 2 seconds (until the Battery LED shows orange) and the zero will be reset. Reading the Software Version. The software version number in the Sensor can be checked without using the VPR100. 1. With the Sensor turned off press and hold the Button. 2. The Battery LED will first blink showing identifying the frequency of the unit (see above) then both LEDs will flash the number of times equal to the software version then go off, i.e. flashing 4 times means the software is version 04. Errors. If the Sensors software detects an error on startup it flashes the Battery LED Red the number of times equal to the error number. Some errors can be cleared by pressing the button allowing the sensor to still be used. At the time of writing defined errors are:
Flash # on Sensor LED Error shown On VPR100 Description 2 3 4 5 4000 2000 1000 0800 Fault with ESN/Battery measurement circuit Sensor not calibrated (Gain/offset of 1.000/0.0 will be used) Fault with RF system. Frequency cannot be set. Watchdog reset has occurred. Hardware fault likely. Calibration. The sensors are calibrated via the VPR100 using the VPR100 Calibrator PC software. 1. Make sure there are NO sensors registered in the VPR100 Sensor Setup screen. Can be cleared No Yes No Yes 2. Plug the VPR100 into the PC start the VPR100 Calibrator and press Connect. 3. Turn on the sensor. The VPR100 should give a high-pitch beep to advise that the sensor has been auto-registered. 4. Select the sensor in the Calibrators drop-down box and calibrate as normal. 5. Turn the Sensor off and wait 10 seconds. The VPR100 should give a lower-pitched beep indicating that the sensor has been automatically de-registered. 6. Get the next sensor and go to step 3. 3