ANNOVEX Druck Sensor
ANNOVEX Pressure-Sensor

ANNOVEX Druck Monitor
ANNOVEX Pressure-Monitor with AVS 3

ANNOVEX ex
Pressure-Sensor/Transmitter Type GMA 09.12.xxx
Pressure-Monitor Type GMA 09.12.xxx

  • ex I M1 Ex ia I Ma
  • Pressure sensitive resistor bridge
  • High accuracy of measurement by compensation of the prevailing temperature by microcontroller system
  • Output range of the output signal is variable
  • Illuminated four-digit display
  • Adjustments or status enquiries by means of a press button unit or a magnetic pointer. The housing need not be opened
  • Code lock to prevent unauthorized manipulation (can be switched off)
  • Fault self diagnosis with alpha numeric display
  • Test of the output signal by simulated values
  • Choice between normed analog or digital output signals (optional)
  • Two built-in limit switches with optocouplers or relays in the monitor
  • Audio visual alarm optional (Monitor)
  • Housing protection rating IP65, sensor protection rating IP 52

The economical, permanently installed pressure-sensor/transmitter and pressure-monitor are
characterised by their stable measurements, simple and secure operation, robustness, low
weight and compact construction.

These devices conform to the explosion protection rating of intrinsic safety „i“, catagory I M1 Ex ia I Ma. This means that this device can be used in the zone M1 of underground mines, even when unpermitted high concentrations of the methane gas are prevailing.
This certification conforms to the ATEX directive 94/9/EG for devices and protective systems
permitted for use in areas endangered by explosions.

The pressure-monitor differs from the pressure-sensor/transmitter because of an additional limit value unit which is equipped with optocouplers or relays.

The measurement of the pressure in the sensor block is by means of an pressure sensitive
resistor bridge sensor. To increase the measurement accuracy, a microcontroller continously compensates the prevailing temperature value. Two tube connections are in the lower area of the housing.

The operation of the device is very simple: The operator places a small magnetic press button unit on the device. The housing need not be opened. As an alternative he can also use a magnetic pointer. A four digit code which can be entered initially, protects against unauthorized changing of the set values. A self monitoring microcontroller system not only processes the measurement values precisely, it also carries out the operator specific instructions such as the entry of the code, signal instructions and messages, analog and digital outputs and test functions etc. A four digit back lit graphic display shows the measured values in 12 mm high digits.

These devices are placed in a fibre reinforced resin housing (impact strength 7 Joule) and are to be connected by means of a plug-in connector. The sensor block with the pressure-sensor is located next to the connector.
For the suspension of the device a steel hanger is attached. Holes on the back of the device
permit a rigid mounting. In addition the pressure-monitor can be equipped with an audio visual alarm unit for giving alarms in the monitored area (see opposite illustration).

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