Digital Barometers

download the leaflets:    DB-X leaflet for DB-1, DB-2 and DB-3

                                           DB278 D Digital Barometer

                                           S 370 Digital Pressure Gauge

                                           S 470 Barometric Pressure Sensor

No. DB-1, DB-2 and DB-3     SERIES OF DIGITAL BAROMETERS DB-X           

The application range of the serie DB-X are the measurements of pressure in meteorological stations, aviation use and in laboratories. Depending on the technical requirements and of the needed redundancy the user can select the specific model of DB-X, namely DB-1 with one, DB-2 with two or DB-3 with three independent working pressure transducers. The economical Barometer type DB-1 meets the most applications e.g. in the field of meteorology. For requirements of higher and highest accuracy with large reliability and redundancy the user should select DB-2 or DB-3 with two respective three combined pressure capsules.

The used barometric pressure sensor is designed for measurements that require excellent accuracy, fast dynamic response and long-term stability and reliability.
- Pressure range: 600...1100 hPa
   (alternative: 800...1100 hPa or 500...1100 hPa)
- Accuracy:  up to 0,1 hPa (DB-2 and DB-3)
                   resp. 0,2 hPa (DB-1)
- Resolution: selectable between 0.01 hPa,
                   0.1 hPa or 1 hPa
- displayed information:
      - local pressure value p,
      - QNH (air pressure on sea level),
      - QFE ((air pressure on runway level),
      - TRL (transition level),
      - historical pressure values
- Pressure Trend (Display of tendency): adjustable
- Long Term Stability: better than 0.1 hPa/year
- Measurements free of hysteresis
- Low power consumption with added main supply
- Rechargeable battery pack as UPS
- Meets CE conformance standards

No. DB278 D - Digital BarometerDB278 D - Digital Barometer

Digital Barometer with 5 LED Display
Measuring Range:
     600 ... 1100 hPa or
     800 ... 1100 hPa
     at 18 ... 28°C: better than +/- 0.2 hPa
     at 0 ... 40°C: better than +/- 0.5 hPa
     (16 step linearity)
Resolution: 0.1 hPa

Long Term Stability: 0.1 hPa/yr
Incl. Work Certificate

To show the barometric pressure on an other altitude e.g. QNH an offset can be entered and the display can be altered by a switch.
Power supply: mains / rechargeable batteries
RS 232 interface / analogue outputs 0...10V or 0/4...20mA

No. S 370 - Digital Pressure Gauge

Digital Pressure Gauge
6 digit LCD Display
for pressure and altitude data
with bi-directional RS-232 port
Range: 600 ... 1100 hPa
Resolution: 0.01 hPa
Accuracy: +/- 0.02% of full scale

No. S 470 - Barometric Pressure Sensor

This Barometric pressure sensor offers extremely high accuracy and unmatched stability in a digital output configuration. It is used as the barometric standard in Automated Surface Observation Systems (worldwide) where accuracy, stability and versatility are essential.

Barometric ranges:
     600 ... 1100 hPa or
     800 ... 1100 hPa
Accuracy: 0.1 hPa 
Resolution: 0.01hPa

Long-term stability: ±0,05% FS in 1 year in the measuring range  
Digital Output: bidirectional RS-232 I/O Port
Operating Temperature: -20 to +50°C
Supply Voltage: 5 VDC ± 1%
Pressure Fittings: Barbed Fitting for 1/8" I.D. Tubing 
Pressure Connection: 10-32 Internal Thread
Electrical Connections
     Excitation: DB-9S, (9 Pin D-Subminatore Female): Pin: 3 GRD, 9 + 5 VDC
     Communications: DB-9S, (9 Pin D-Subminiature Male): Pin: 2 TXD, 3 RSX, 5 GRD
Operating Power: 5 VDC ±1%, 70 mA max.

Dr. Alfred Müller - Meteorologische Instrumente KG
Chausseestraße 39 / 42c, D-15712 Königs Wusterhausen
Telefon: +49 (0)3375 9025-32  Telefax.: +49 (0)3375 9025-36