Tested Brooks/Granville-Phillips Vacuum Gauges

Model	Tested
280	ask
303	$1,200
307	$925
307	ask
314	ask
316	$695
330	$650
332	ask
332	ask

Model	Tested
338	ask
340	ask
341	ask
349	ask
350	$795
352	ask
354	ask
358	ask
360	ask
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

We also provide repair service for our listed vacuum gauges.

Model	Tested
260
270
271
275071
275185
275863
275801
275807
275913
275
280	$950

Digital Manuals

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