1.5. HPM-2002-OBE  RS232/485 Output Module
The RS232/485 module consists of a power conversion/sensor transducer board, microprocessor board and a user interface option board. Serial communication is conducted via an 
1.6. HPM-2002-OBE  DeviceNet Module
The DeviceNet module consists of a power conversion/sensor transducer board, microprocessor board and a user interface option board. All communication is conducted via a 
1.7. Specifications
Measuring range  | |
..............................................................................................................................  | |
Accuracy (N2, T=23°C)  | + 20% of reading (1   | 
............................................................................................................  | + 1.5% of reading (50 to 1000 Torr)  | 
Ambient temperature operating range  | 0° to 50°C  | 
Process control  | 2 TTL outputs (1 TTL remote zero command input)  | 
Digital readout  | Four digit LED  | 
Equipment operating ranges  | |
Transducer mounting  | Any position without recalibration.  | 
Transducer internal volume  | < 1.5 cc  | 
Wetted material  | Au, Si3N4, Si, PyrexTM,  | 
....................................................................................................................  | KovarTM, 316 stainless steel and  | 
....................................................................................................  | High Temp/Low Outgassing UHV Epoxy  | 
Weight (OBE &   | 12 oz (1/8” NPT tube)  | 
Calibrated for nitrogen  | Conversion Factors for other gases are selectable  | 
Burst Pressure (Tube)  | 150 psig  | 
Proof Pressure (*)  | 30 psig  | 
Nominal Operating Pressure (Tube)  | |
Input Operating Range  | 11.5 to 30 VDC  | 
Input Power  | 24 VDC @ 125 mA  | 
* Maximum pressure above which may cause permanent damage.
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