Agilent / Varian
Agilent / Varian FRG-720/730 Pirani Bayard-Alpert Gauge
Agilent / Varian FRG-720/730 Pirani Bayard-Alpert Gauge

 

Agilent / Varian FRG-720/730 Pirani Bayard-Alpert Gauge

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FRG-720/730 Pirani Bayard-Alpert Gauge

 

The FRG-720 and FRG-730 combine Agilent's Pirani and Bayard-Alpert sensor into a single compact design that provides measuring capability from 5 x 10-10 mbar to atmosphere (3.8 x 10-10 Torr to atmosphere). Combining these two technologies into a single unit reduces complexity and integration challenges while protecting the Bayard-Alpert sensor from premature burnout.


FRG730KF25RS Replacement Sensor, FRG-730 full range gauge, Nickel-plated dual filaments, KF25
FRG730CF35RS FRG-730 Replacement Sensor, NI, 2.75 in. ConFlat Flange
FRG730KF25S FRG-730 Bayard-Alpert/Pirani combination gauge, Nickel-plated dual filaments, with setpoints, KF25
FRG730CF35S FRG-730 Bayard-Alpert/Pirani Gauge, NI, 2.75 in. ConFlat Flange
FRG730KF25SD FRG-730 Bayard-Alpert/Pirani combination gauge, Nickel-plated dual filaments, with setpoints and LCD display, KF26
FRG730CF35SD FRG-730 Bayard-Alpert/Pirani Gauge, NI, LCD, 2.75 in. ConFlat Flange
FRG730KF25SP FRG-730 Bayard-Alpert/Pirani combination gauge, Nickel-plated dual filaments, with setpoints and Profibus, KF26
FRG730CF35SP FRG-730 Bayard-Alpert/Pirani Gauge, NI, 2.75 in. ConFlat Flange, Profibus



Features

Combination gauge Bayard-Alpert and Pirani provides wide measurement range from 5 x 10-10 mbar to atmosphere
Pirani interlock – protects Bayard-Alpert sensor from premature burnout and contamination effects from high pressure operation
Long-life ytterium oxide-coated iridium filament brings a rugged design for a wide-range of applications
Set point control
LCD display option allows monitoring of pressure readings easily
Profibus communication option facilitates simplified network integration
 
Specifications

Technical Specifications

 

Measurement range (Air, O2, CO, N2) 5 x 10-10 to 1000 mbar (3.8 x 10-10 to 760 Torr)
Accuracy 10-8 to 10-2 mbar/torr – ± 15% of reading
Repeatability 10-8 to 10-2 mbar/torr – ± 5% of reading
Degas p < 7.2 x 10-6 mbar – electron bombardment, max. 3 min
Pressure, maximum

2 bar absolute
Temperature Operation
(ambient)		 Storage Bakeout at flange w/extension Bakeout at flange wo/extension Bakeout w/electroncs removed
0 to 50 °C –20 to +70 °C 150 °C 80 °C 150 °C
Supply voltage 20 to 28 VDC, 1.4 A on startup for 200 msec, 0.8 A operating
Output signal analog
Measurement range
Voltage vs. pressure
Error signal
Minimum loaded impedance		 0 to 10 V
0.774 to 10.0 V
0.75 V/decade
0.3/0.5 V
10 kΩ
Communication interface RS-232C
Electrical connection D-sub, 15 pin, male
Maximum cable length 100 m (330 ft)
Materials exposed to vacuum Yt2O3, Ir, Pt, Mo, Cu, W, NiFe, NiCr, stainless steel, glass
Internal volume KF/CF 24 cm3 (1.46 in3) /34 cm3 (2.1 in3)
Weight KF/CF 285g/550g
Protection type IP30
Setpoint relays (1) for FRG-730 Range Relay contact Hysteresis Contact rating
1 x 10-9 to 100 mbar n.o., potential free 10% of reading 30 V/0.5 A DC
Profibus Option
Baud rates 9.6/19.2/93.75/187.5/500 kBaud; 1.5/12 mBaud
Address 2 switches (address 00 – 127) or network programmable
Digital functions Read pressure, select units (Torr, mbar, Pa); degas function, Pirani full scale adjust; monitor gauge status; safe state allows definition of behavior in case of error; detailed alarm and warning information
Analog functions 0 to 10 V analog output pressure indication; two setpoint relays A + B
Setpoint relays (2) Range Relay contact Hysteresis Contact rating
1 x 10-9 to 100 mbar n.o., potential free 10 % of reading 60 V/0.5 A DC
Connector for Profibus DP D-sub, 9 pin, female

 

Outline Drawing

FRG-720 / FRG-730 Pirani Bayard-Alpert Gauge Outline Drawing

 
 

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