Convectron™Ionization Gauge Controllers (Catalog F31)

F31

FAX: 908-806-6631

www.sisweb.com

Convectron™ Ionization Gauge Controllers

S

eries 475 Convectron gauges provide useful pressure

measurement over 7 decades from 10

-4

to 1000 Torr, or

from 1 x 10

-3

mbar to 1000 mbar.

This innovation in the

art of vacuum measurement is accomplished with a single gauge

tube and controller. The series 275 gauge tube contains a

temperature compensated heat loss sensor which utilizes

conduction cooling to sense pressure at lower pressures. At

higher pressures, it utilizes convection cooling in which gas

molecules are circulated through the gauge tube by gravitational

force.

Convectron gauges offer the following advantages relative to

thermocouple gauges:

•

System performance can be monitored continuously

from atmosphere down without pressure blind spots.

•

Purchase of additional controller and gauge tube

models is not necessary if your needs change to

different segments of the range.

•

A much wider range can be covered with one

Convectron gauge than with thermocouple gauges.

•

There is no chance of error that might be caused by

using the wrong gauge tube-controller combination.

One gauge tube fits all controller models.

•

Wide Pressure Range 10

-4

- 1000 Torr

•

Highly Accurate Convectron Design

•

High Repeatability

•

Fast Response Time

•

RoHS / CE

Compliant

Their wide useful range, highly predictable performance and

low prices make Convectron gauges an excellent replacement for

conventional thermocouple and Pirani gauges.

They also are the

measurement systems to consider in applications where

conventional thermocouple and Pirani gauges have not been

suitable because of limited range, drift, or slow response.

Gauge Specifications

Pressure in Torr for Air

Useful Measuring Range

1 millitorr to 1000 Torr, or 1 x 10

-4

mbar to 1000 mbar, for N

2

using a single gauge tube and controller.

Digital Readout

Seven decade range indicated by lighted LED’s, automatic

ranging displays correct measuring units at all times.

An easy to read VFO pressure display configurable to use

scientific notation or two ranges (Torr and mTorr, mbar and 10-3

mbar or kPa and Pa) to provide a continuous measurement read-

out from atmosphere to low pressure.

Gauge Tube Mounting

Gauge tube axis must be horizontal to provide accurate

measurement above about 1 Torr (1 mbar).

Excessive vibration

can slightly affect readout of digital gauge above about 1 Torr (1

mbar) because of forced convection effects in the tube.

Gauge Tube

Internal Volume: 40 cc (2.5 cu. in.)

Sensor:

Gold plated tungsten.

Stability with Voltage Variation

Pressure reading changes by less than 0.02% of reading per

1% change in line voltage over most of the pressure range.

Gauge Weights

lbs.

kg

Net

3.5

1.6

Controller Dimensions

in.

mm

Front of panel, h., w.

3.81

97

Front of panel, depth

0.75

19

Rear of panel, depth

with connector

8.65

220

Mounting hole, square

3.63

92

Granville - Phillips Model 475 Convectron Ion Gauge Controller

for accurate low vacuum measurement

Fig. 1

Comparison of the range of a single convectron

gauge with the range of typical thermocouple and

Pirani gauges.

Convectron Gauge

Thermocouple Gauge

Pirani Gauge

10

-4

10

-3

10

-2

10

-1

1

10

100

1000

Part No.

Description

475001AAT Part #475001AAT—Click for details
DISCONTINUED
Unit of Measure: EA
*

Controller RS232, 2 set points reads Torr

275071 Part #275071—Click for details
Current Price: $260.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.

1/8 NPT Convectron Tube

4750081 Part #4750081—Click for details
DISCONTINUED
Unit of Measure: EA

Power Supply Wall Mount 115 VAC

4750083 Part #4750083—Click for details
DISCONTINUED
Unit of Measure: EA

Power Supply, CE Compliant

220 VAC Europe

47501210 Part #47501210—Click for details
DISCONTINUED
Unit of Measure: EA

10' Cable

*This is the controller only. Purchase cables and tubes separately.

New