Description
Fischer DE70 – Smart DP Transmitter – Liquids, Gases
Rugged, micro-processor based differential pressure transmitter, highly sensitive capacitive sensor element, for liquid, gas
Make: Fischer Messtechnik (Germany)
Model: DE70
Fischer DE70 is micro-processor based smart differential pressure transmitter with highly sensitive capacitive 
sensor element. It is suitable for overpressure, negative pressure and differential pressure monitoring of liquid and gases, and thereby used for pressure, level and flow monitoring.
DE70 is also available in explosion proof version for hazardous area application.
Due to precise silicon based capacitance type pressure sensing element, DE70 is highly rugged, resistant to effects of fatigue and overloading, and unaffected by pressure fluctuations.
Working Principle:
DE70 works on silicon capacitance sensor with a bridge measuring circuit. This sensor element is very rugged, resistant to effects of fatigue and overloading, and unaffected by pressure fluctuations.
Modern microprocessor technology is used to convert bridge output to a standard 4-20mA signal, which permits measured value to be transmitted over long distances. A HART interface is also available using an optional communication module installed in the transmitter. With HART interface, digitally transmitted pressure measurement, as well as the transmitter’s setup data can be read very accurately by simply connecting a compatible terminal device at any point along the length of the signal output loop.
Key Features:
- High sensitivity
- Robust Design, over pressure protected
- Wear resistant sensor
- High resistance to corrosion
- Low hysteresis
- Large LED Display
Key Specifications:
- Measuring range:
- 0 ~ 6 mbar to 0 ~ 60 mbar, max static pressure: 32 bar
- 0 ~ 32 mbar to 0 ~ 320 mbar, max static pressure: 140 bar
- 0 ~ 130 mbar to 0 ~ 1300 mbar, max static pressure: 140 bar
- 0 ~ 500 mbar to 0 ~ 5000 mbar, max static pressure: 140 bar
- 0 ~ 2 bar to 0 ~ 20 bar, max static pressure: 140 bar
- Linearity: < 0.1 %
- Hysteresis: < 0.1 %
- Temperature coefficient: < 0.5 % / 10° C
- Operating ambient temperature: -10° C to +70° C
- Operating media temperature: 0° C to +80° C
- Protection class: IP67
- Electrical output: 4-20mA
- Power supply: 24 V DC
- Pressure connection: 2 x 1/4″ NPT
- Display: analog display with 0 ~ 100% scale. digital display (only with communication module option -K installed)
- Electrical connections: internal terminal block
- Material (media contact): Stainless steel 316 L (1.4404)
- Electronic housing: Aluminum, surface coated
- Marking / approval: CE mark, complies with EMV specifications EN 50082-1 and EN 50082-2
Application areas:
- Filter technique
- Precision measurements in air conditioning conduits
- Clean room pressure compensation
- Burner vacuum measurement
- Circulating air controlling in furnaces
Industrial areas:
- Air conditioning and ventilation systems
- HVAC and ventilation application
- Environment monitoring
- Clean room and laboratory rooms
