Huba 699 differential pressure transmitter
Measuring range : -1 ... 1 mbar / 0 ... 0.3 – 50 mbar (Relative and difference)
Response time : <20 ms
Media : Air / Neutral gases
Medium temperature : 0 ... 70 °C
Features
The pressure transmitters of Type 699 are switchable in pressure ranges and available with or without a display. A full version includes additional customer-specific adjustment options. Sensors specially developed for each pressure range enable physically accurate and long-term stable measurement. The variety of options allows for versatile use in HVAC technology as well as for fine measurements in industrial and medical fields.
•Optionally with or without LCD display
•Adjustable measuring ranges
•Switchable output signals
•Switchable characteristic curve (linear or square-rooted)
•Zero-point reset button
•Full scale value adjustable by the customer
•Attractive price-performance ratio
•Application possible in overpressure and vacuum ranges
•Easy installation. Mounting bracket for wall or ceiling mounting integrated into the housing
Specification
| Product feature | |
|---|---|
| Pressure measuring range | -1 ... 1 mbar / 0 ... 0.3 – 50 mbar (Relative and difference) |
| Response time | <20 ms |
| Load change | <10 ms |
| Display | LCD display (2 lines, each with 8 alphanumeric digits); LCD display (Additional 30 mA current consumption with backlighting); Modbus module (RTU RS-485) |
| Setting range | The zero point can be reset using the reset button; The end value can be set via the DIP switch and also using the turbopoti |
| Adjustability | Depending on the variants ordered, various parameters can be configured by the user (see variant plan) |
| Sensor weight | 90; 100 g |
| Field of application | |
| Media | Air and neutral gases |
| Medium temperature | 0 ... 70 °C |
| Permissible overload on one side P1 | 50 mbar (Application in the overpressure range); 100 mbar (Application in the overpressure range); -4 mbar (Application in the negative pressure range) |
| Permissible overload on one side P2 | 4 mbar (Application in the overpressure range); -50 mbar (Application in the negative pressure range); -1100 mbar (Application in the negative pressure range) |
| Bursting pressure | 2 x overload (at room temperature); 1.5 x overload (at 70°C) |
| Ambient condition | |
| Ambient temperature | 0 ... 70 °C |
| Storage temperature | -10 ... 70 °C |
| Condensation | no condensation |
| Material | |
| Housing with media contact | Polycarbonate PC |
| Membrane with media contact | Silicone |
| Measuring element with media contact | Ceramic Al2O3 (96 %) |
| Electrical data | |
| Current consumption | <30 mA |
| Inverse-polarity protection | Short-circuit and reverse polarity protected. Each connection against each other with max. supply voltage. |
| Electrical connection | Screw terminals for wires and stranded wires up to 1.5 mm2; Cable bushings with integrated strain relief PG11 |
| Installation guide | |
| Installation orientation | Recommendation: Vertical, pressure connections downwards; factory adjustment |
| Assembly | with mounting bracket (integrated in the housing) |
| Approval | |
| EMC compatibility | CE-compliant in accordance with EN 61326-2-3 |
Applications
AHU / CRAC