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902B Absolute Piezo Vacuum Transducers
Model: 902B-31480
902B Absolute Piezo Vacuum Transducers
Model: 902B-31480

Overview
Overview
The 902B-32010 Absolute Piezo Vacuum Transducer combines the pressure measurement technology of a MEMS-based Piezo sensor with a metal sealed stainless steel 316 diaphragm and integrated electronics. It features an IP40 rated enclosure, a 1/8 Inch NPT fitting and a RS232 digital communication interface for setup of transducer parameters and to provide real time pressure measurement. In addition, the 902B has a 16 bit 0-10 VDC analog pressure output that is linear at 10 mV/Torr and can be interfaced to external analog equipment for pressure readout or close loop control. It has a male DB9 connector offering backward compatibility with the first generation 902. One mechanical relay is included for process control use, for example interlocking isolation valves and vacuum pumps. The SPDT relay includes both normally open and closed contacts and can be set to energize above or below a set point trip value. Many applications require continuous surveillance of system pressure and warning of atypical pressure levels. The flexible relay options of the 902B can provide warning to external safety logic in cases of abnormal pressure and loss of power. The 902B can be used as a standalone device or together with the PDR900 controller.
Technical Specs
- Digital CommunicationRS232
- TypeVacuum Transducer
- SensorStainless steel enclosed Piezo (Absolute Pressure)
- DisplayNo
- InterfaceRS232/analog
- Fitting Type0.125 in. NPT male
- Installation OrientationAny
- Measurement Range0.1 - 1000 Torr
- Set Point Range1 - 1000 Torr
- Operating Temperature0 - 40°C (32 - 104°F)
- Maximum Bakeout Temperature100°C (non-operating)
- Digital ControlsZero adjust, span adjust, analog output, pressure units, baud rate, address, factory default, set point functions: value, hysteresis, direction, enable
- Digital StatusPressure reading, units, set point, operating time, transducer temperature, user tag, model, device type, serial number, firmware and hardware versions, part number, manufacturer
- Analog Output1 VDC per Decade
- Analog Output ResolutionPrimary: 16 bit, Secondary: 12 bit
- Relay Contact Rating1 A @ 30 VAC/VDC resistive
- Relay Response100 msec maximum
- Power Requirements9 - 30 VDC <1.2 Watts maximum
- Accuracy10 - 1000 Torr ±1% of Reading
- Repeatability±0.3% of Reading
- Overpressure Limit1500 Torr
- Exposed Materials316 Stainless Steel
- Electronic Casing and Flange304 Stainless steel
- ComplianceCE
- Connector, RelaysRJ45/FCC68 8 pin, no relays (Edwards, Oerlikon type)
- Enclosure, DisplayIP40 Enclosure, no display
- Digital Output Resolution0.1 Torr
- Zero Temperature Coefficient0.01% of Full Scale/°C
- Span Temperature Coefficient0.02% of Reading/°C
Technical Specs
- Digital CommunicationRS232
- TypeVacuum Transducer
- SensorStainless steel enclosed Piezo (Absolute Pressure)
- DisplayNo
- InterfaceRS232/analog
- Fitting Type0.125 in. NPT male
- Installation OrientationAny
- Measurement Range0.1 - 1000 Torr
- Set Point Range1 - 1000 Torr
- Operating Temperature0 - 40°C (32 - 104°F)
- Maximum Bakeout Temperature100°C (non-operating)
- Digital ControlsZero adjust, span adjust, analog output, pressure units, baud rate, address, factory default, set point functions: value, hysteresis, direction, enable
- Digital StatusPressure reading, units, set point, operating time, transducer temperature, user tag, model, device type, serial number, firmware and hardware versions, part number, manufacturer
- Analog Output1 VDC per Decade
- Analog Output ResolutionPrimary: 16 bit, Secondary: 12 bit
- Relay Contact Rating1 A @ 30 VAC/VDC resistive
- Relay Response100 msec maximum
- Power Requirements9 - 30 VDC <1.2 Watts maximum
- Accuracy10 - 1000 Torr ±1% of Reading
- Repeatability±0.3% of Reading
- Overpressure Limit1500 Torr
- Exposed Materials316 Stainless Steel
- Electronic Casing and Flange304 Stainless steel
- ComplianceCE
- Connector, RelaysRJ45/FCC68 8 pin, no relays (Edwards, Oerlikon type)
- Enclosure, DisplayIP40 Enclosure, no display
- Digital Output Resolution0.1 Torr
- Zero Temperature Coefficient0.01% of Full Scale/°C
- Span Temperature Coefficient0.02% of Reading/°C
Resources & Downloads
Drawings & CADs
902B Transducer Dimensional Drawing(74.3 kB, PDF)