971B UniMag™ Cold Cathode Vacuum Transducers
Model: 971B-71034
971B UniMag™ Cold Cathode Vacuum Transducers
Model: 971B-71034

Overview
Overview
The 971B-71034 UniMag Cold Cathode Inverted Magnetron Vacuum Gauge offers a measurement range from 1x10-8 Torr to 5x10-3 Torr and features a 2.75 inch CF flange fitting. It has an RS232 digital communication interface for setup of transducer parameters and to provide real time pressure measurement. Three included mechanical relays can be used for process control like interlocking valves or pumps. UniMag transducers are based on cold cathode inverted magnetron sensor technology. The 971B is a cost effective solution for base pressure measurement and control. All Series 970B transducers have an analog pressure output of 0.5VDC/decade that can be interfaced to external analog equipment for pressure readout or control. Other analog outputs and curves can be selected via the digital user interface. The Series 970B have standard 15 pin HD Sub-D connector. It can also emulate analog voltage outputs from a variety of other vacuum transducers. The emulation feature can be used to upgrade and replace other vendors’ gauges in OEM applications without changing system software. The integrated touch-screen display is user configurable; the user can change pressure units, orientation and has access to set point parameters as well as gas type. The display also indicates the status of the available set point relays. Displayed pressure reading from individual sensors or combined reading can be seen from >5 meters away on the high contrast display.
Technical Specs
- Absolute Measurement Range1.0 x 10-8 to 0.005 Torr
- Digital CommunicationRS232
- TypeVacuum Transducer
- SensorCold Cathode
- DisplayTouch-screen
- Seal MaterialViton
- EnclosureStandard
- Electrical Connector15-pin, High Density, D-sub male
- InterfaceRS232/analog
- Relays3
- Fitting Type2.75 in. CF
- Installation OrientationAny
- Set Point Range1 x 10-8 Torr to 5 x 10-3 Torr Absolute
- Calibration GasNitrogen
- Operating Temperature0 - 40°C (32 - 104°F)
- Maximum Bakeout Temperature85°C (185°F)
- Digital ControlsPressure units, baud rate, address, factory default, user tag, RS485 test, gas correction, set point functions: value, hysteresis, direction, HV enable, protect, control set point, gas type
- Digital StatusPressure reading and units, set point, transducer temperature, user tag, model, device type, serial number, firmware and hardware versions
- Analog Output0.5 VDC per Decade
- Relay Contact Rating1 A @ 30VAC/DC, resistive
- Power Requirements9 - 30 VDC, 2 Watts
- Accuracy5 x 10-8 Torr to 10-3 ±30% of Reading (Typical)
- Repeatability5 x 10-8 Torr to 10-3 ±30% of Reading (Typical)
- Overpressure Limit1500 Torr
- Internal Volume21 cm3
- Exposed Materials304 and 403 stainless steel, Viton, Cu-Ni and Ag-Cu alloy, ceramic, titanium
- Electronic Casing and Flange304 stainless steel
- ComplianceCE
Technical Specs
- Absolute Measurement Range1.0 x 10-8 to 0.005 Torr
- Digital CommunicationRS232
- TypeVacuum Transducer
- SensorCold Cathode
- DisplayTouch-screen
- Seal MaterialViton
- EnclosureStandard
- Electrical Connector15-pin, High Density, D-sub male
- InterfaceRS232/analog
- Relays3
- Fitting Type2.75 in. CF
- Installation OrientationAny
- Set Point Range1 x 10-8 Torr to 5 x 10-3 Torr Absolute
- Calibration GasNitrogen
- Operating Temperature0 - 40°C (32 - 104°F)
- Maximum Bakeout Temperature85°C (185°F)
- Digital ControlsPressure units, baud rate, address, factory default, user tag, RS485 test, gas correction, set point functions: value, hysteresis, direction, HV enable, protect, control set point, gas type
- Digital StatusPressure reading and units, set point, transducer temperature, user tag, model, device type, serial number, firmware and hardware versions
- Analog Output0.5 VDC per Decade
- Relay Contact Rating1 A @ 30VAC/DC, resistive
- Power Requirements9 - 30 VDC, 2 Watts
- Accuracy5 x 10-8 Torr to 10-3 ±30% of Reading (Typical)
- Repeatability5 x 10-8 Torr to 10-3 ±30% of Reading (Typical)
- Overpressure Limit1500 Torr
- Internal Volume21 cm3
- Exposed Materials304 and 403 stainless steel, Viton, Cu-Ni and Ag-Cu alloy, ceramic, titanium
- Electronic Casing and Flange304 stainless steel
- ComplianceCE
Resources & Downloads
Literature
970 Cold Cathode Transducers(250.9 kB, PDF)
Drawings & CADs
971 UniMag™ Cold Cathode Transducer Dimensional Drawing(242.3 kB, PDF)
