Description
Fischer DE46 Ex – Low pressure ATEX DP Transmitter Switch
low pressure range, high accuracy, with LED display, capacitive sensor, microcontroller based, ATEX approved Differential pressure transmitter with limit switch, for air, clean gases
Make: Fischer Messtechnik (Germany)
Model: DE46…R (Zone 2 gas explosion proof), DE46…S ( Zone 22 dust explosion proof)
Fischer DE46 Ex is multi-functional, high accuracy, micro-controlled based ATEX approved explosion proof pressure instrument which combines digital readout, dual limit detection relays and optional transmitter output. The instrument consist of microprocessor based electronic unit to process signals and transmit over analog signals.
With its available options, it is suitable for installation in hazardous area locations.
- DE46…R – Suitable as electrical equipment for use in explosion hazardous area Zone 2
Declaration per direction 94/9/EC (ATEX)
Ex II3G EEx nA IIC T4<
-10° C < Tamb < 60° C - DE46…S – Suitable as electrical equipment for use in explosion hazardous area Zone 22 – dry dust
Declaration per direction 94/9/EC (ATEX)
Ex II3D IP65 T125° C<
It is suitable for accurate measurement of low positive / negative gauge pressure or differential pressure of air and clean gases.
Working Principle:
DE46 is based on highly sensitive capacitance sensor element to measure positive gauge, negative gauge (vacuum) or differential pressure. The measuring pressure is applied directly on micro-machined silicon-on-glass capacitance sensor element. DE46 internal micro-controller transferred measured values to LED display and operates two internal limit relays / switches, which can be used for alarm / control functions.
With transmitter option, the measured value can be transmitted as voltage or current signal output after conversion by a D/A converter module.
The output signal, thus can be filtered, scaled and inverted accurately by digital controller.
Key Features:
- Suitable for Low Pressure measurement without long-term drift
- Robust Design, over pressure protected
- Maintenance free
- Optional: Transmitter signal output with feature of scaling, adjusting for zero offset anywhere within specified pressure range, or inverted
- Non-linear measurement can be linearized using user-programmable look-up table upto 30 points
- Fully programmable via PC based EU03 module
- Large LED Display
Key Specifications:
- Measuring range: 0 ~ 25 Pa to 0 ~ 1000 Pa; ± 12.5 Pa to ± 100.0 Pa
- Maximum static operating pressure: 1.0 bar
- Maximum safe pressure: 1.7 bar
- Straight line deviation error (max): 1.0% full scale
- Pressure connection: screw clamp connectors (aluminum) for 8/6 or 6/4 mm hose
- Operating ambient & media temperature: -10° C to +70° C
- Protection class: IP65 per DIN EN 60529
- Electrical output: 4-20mA or 0-10V, 3 – wire
- Power supply: 24 V DC/ AC
- Switching contacts: 2 sets of programmable voltage free contacts: NO or NC
- Display: 3 1/2 digit LED
- Electrical connections: two round shell multi-pin connector sockets (M12, male)
- Material, housing: Polyamide PA 6.6
- Materials, media contact: Silicon, PVC, aluminum, brass
Application areas:
- Filter status monitoring
- Precision air duct measurement
- Clean room pressure balance monitoring
- Burner air feed low pressure monitoring
- Oven air feed control
- Pump monitoring and control
- Compressor monitoring and control
Industrial areas:
- Air conditioning and ventilation systems
- Auditorium, office, conference rooms
- HVAC and ventilation application
- Environment monitoring
- Clean room and laboratory rooms
