Used Brooks/Granville-Phillips Vacuum Gauges

Model	Tested
260	$500
270	$500
271	$500
275071	$75
275185	$75
275863	$160
275801	$160
275807	$160
275913	ask
275	$350
280	$950

Model	Tested
303	$1,200
307	$925
316	$695
330	$650
332	ask
338	ask
340	ask
349	ask
350	$795
354	ask
358	$695
370	ask

Prices for Brooks vacuum gauges depend upon the number of set points, interface options and number of gauges controlled. For the older style, 270, the base price is $500. Add $100 each for Dual TC, add $200 for process control or add $300 for both. For the 330 start from $650 for the half rack gauge and let us know what configuration you require. Ask us for prices on cables and other items to go with your gauge.

Things to Consider

Convectron gauge tube
Thermocouple gauge tube
Ion gauge tube
Cable for single or dual thermocouple, convectron, capacitance manometer gauge or ion gauge tube

307 Specifications

	Description
Display	type digital (green LED) units Torr, mTorr, Pascal update time 0.5 second typical
Controller Pressure Range	Lower Measure Limit 1 x 10^-10 Torr with 10 mA emission and tube sensitivity of 10/Torr. Upper Measurement Limit 1 x 10^-1 Torr with 0.1 emission and tube sensitivity of 10/Torr. Pressure range - 7 decades within above limits for given emission setting and tube sensitivity.
Emission Current	Controlled, adjustable from 0.01 to 10.0 mA
Ionization Gauge	analog output; Logarithmic: 1 V/decade, 0-10 VCD Bayard-Alpert (B/A) and other compatible filament-type ionization gauges.
Sensitivity Adjustment Range	3 Torr to 50 Torr
Cables	10 ft., 25 ft., 50 ft., or specify up to 200 ft.
Control Unit Dimensions (inches)	3.5 x 9.5 x 10.75
Power Supply Dimensions (inches)	3.5 x 8(without mounting brackets) x 9.5
Power Input	110 / 220 VAC 250 W

275 Specifications

	Description
Measuring Range	1 mTorr to 1,000 Torr for N₂. Operation down to 0.1 mTorr is possible but requires periodic checking of zero by reducing system pressure to below 1 x 10^-5 Torr.
Ambient operating temperature range	+4 to +50 °C
Gauge tube temperature range (non-operating)	85 °C max. with electronics attached. 150 °C max. with electronics removed.
Gauge Tube
Internal volume	40 cm³ (2.5 in³)
Sensor	Gold plated tungsten

Digital Manuals

270 Instruction Manual
303 Instruction Manual
307 Instruction Manual
316 ""
350 ""
370 ""

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