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

Ordering Details

Description	KF25	CF35
FRG-720 Pirani/Bayard Alpert combination gauge single filament	FRG720KF25	FRG720CF35
with display	FRG720KF25D	FRG720CF35D
with setpoints and Profibus	FRG720KF25SP	FRG720CF35SP
FRG-730 Pirani/Bayard Alpert combination gauge dual filaments w/set pts	FRG730KF25S	FRG730CF35S
FRG-730 Pirani/Bayard Alpert combination gauge dual filaments w/set pts. and display	FRG730KF25SD	FRG730CF35SD
FRG-730 Pirani/Bayard Alpert combination gauge dual filaments w/set pts and Profibus	FRG730KF25SP	FRG730CF35SP
Accessories
FRG-720 Replacement sensor KF25	FRG720KF25RS
FRG-720 Replacement sensor CF35	FRG720CF35RS
FRG-730 (dual filaments) KF25 Replacement sensor	FRG730KF25RS
FRG-730 (dual filaments) CF35 Replacement sensor	FRG730CF35RS
FRG-720/730 Baffle	FRG720BFL
FRG-720/730 Power Supply 24V DC/RS232C	FRG720PWR
FRG-720/730 Bakeout extension, 100mm	FRG720BKE

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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Agilent FRG-720/730 Pirani Bayard-Alpert Gauge

FRG-720/730 Pirani Bayard-Alpert Gauge