AD/A Pressure Transducer for Atmospheric and Barometric Air Pressure for Surface Mounting, 0-10 V or 4-20 mA

The pressure transducer AD/A registers the atmospheric or barometric pressure in the range of 500...1150 mbar and converts this measured value into a linear output signal 0-10 V respectively 4-20 mA. As an option the pressure transmitter has a potential-free changeover contact and a backlit display. The display content can be rotated in 90° steps using a menu and the actual value, the switching threshold set, the state of the relay, the MIN/MAX measured values for the selected intervals(1 h / 6 h / 12 h / 24 h) etc. can be read out. On the display version the altitude above sea level cab be entered and switched between atmospheric and barometric air pressure. The atmospheric air pressure is defined by the weather conditions and the altitude above sea level. The barometric air pressure is defined by the weather conditions and normalised according to the altitude above sea level. If required the pressure transducer can be finely calibrated in site using an SPAN controller.

Technical Specifications

Pressure type: atmospheric air pressure / barometric air pressure (display version only)

Medium: air, non-aggressive, non-flammable, non-condensing gases

Measurement range atm. air pressure: 500-1150 mbar

Scales: 500...1150 mbar, 750...1150 mbar

Accuracy: ±5 mbar (at 20°C)

Temperature dependency: 1 mbar / 10 K

Linearity inaccuracy: ±1,0% final value

Pressure resistance: 5-times of measurement range

Sensor: Piezoresistive on-chip silicon sensor

Sensor protection: stainless steel sinter filter

Supply voltage analog 0-10 V: 24 V AC/DC (±5%)

Supply voltage analog 4-20 mA: 15...36 V DC (Ubmin = 15 V + RLoad*0,02A)

Current consumption at 0-10 V: typ. 15 mA, 30 mA peak current consumption for 50 ms at switching moment at option relay

Current consumption at 4-20 mA: max. 20 mA / output, 40 mA peak current consumption for 50 ms at switching moment at option relay

Analogue output 0-10 V: 3-wire connection, min. load resistance 100 kOhm

Analogue output 4-20 mA: 2-wire connection (transmitter), max. RLoad(Ohm) = (+Ub - 15 V) / 0,02 A

Alarm output: 1 x potential-free change-over contact, 48 V, 1 A

Switching Hysteresis Relay: 2% of the selected scaling (without display), 0,5...5% of the selected scaling adjustable (with display)

Offset: max. ±50 mbar

Electrical connection: screw terminals max. 1,5 mm²

Display: optional LCD display with backlight on/off/auto

Output attentuation: 0 s / 1 s / 5 s / 10 s selectable by DIP switch

Cable gland: PG11 high-strength cable gland with strain relief

Housing: Polycarbonate PC UL 94 V0 with hinge locks, color signal white similar to RAL 9003

Dimensions: Housing: L 89 x W 80 x H 47 mm

Protection type: IP30

Protection class: III

Working range r.H.: 0...98% r.H. in contaminant-free, non-condensing air

Working temperature: 0...+50°C

Storage temperature: 0...+50°C

Installation: screw fastening

Approvals: CE, EAC, RoHS