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Series 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 475 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.
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, or drift, or slow response.
Convectron gauges may be considered for use in certain applications where more expensive gauges such as capacitance manometers would be the first choice were it not for their higher cost.
Convenience and Versatility
The Convectron gauge is designed to give "plug-in-and-read" convenience. No pre-installation calibration is required because it is computer calibrated prior to shipment. It snaps into an instrument panel cutout without tools or hardware.
Convectron gauges offer the following advantages relative to thermocouple gauges:
NOTE: Due to their wide pressure range, convectron gauges can replace both thermocouple and Pirani gauges.
Accuracy
The accuracy of Convectron gauges is exceptionally good. Close attention has been given in the design to minimize those factors which produce errors in conventional heat loss transducers.
High Repeatability
Repeatability of Convectron gauges is excellent. For example, in typical tests at constant temperature, Convectron gauges were repeatable to 1/10 millitorr at 1 millitorr (1 x 10-4 mbar at 1 x 10-3 mbar) as measured by a precision digital capacitance manometer.
Fast Response time
The sensor in a Convectron gauge tube operates in an electronic feedback loop which keeps its temperature nearly constant. Thus response time is very fast because components do not have to change temperature significantly as pressure changes.
Fig.1 - Comparison of the range of a single convectron gauge
with the range of typical thermocouple and Pirani gauges.
Wide Measurement Range
Direct replacement for Series 375 Convectron Controllers and allows vacuum system performance to be monitored continuously from atmosphere to 1 x 10-4 Torr (1 x 10-4 mbar, 1 x 10-2 Pa)
High Measurement Resolution
Designed to take full advantage of Convectron Gauge technology with 1 Torr (1 mbar, 0.1 Pa) resolution at atmosphere and 0.1 mTorr (1 x 10-4 mbar, 1 x 10-2 Pa) resolution at low pressure.
Vacuum Fluorescent Display
The VFD is easier to read from greater distances than other types of displays. The display is 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 readout from atmosphere to low pressure.
Process Setpoint Option
Relay contacts allow control of other vacuum equipment, such as valves, pumps, heaters, alarms, and safety interlocking
Multiple Gas Curves
Selsctable N2, Ar, He, CO2 and O2 gas curves are pre-programmed, eliminating the need for individual calibration when changing the process gas.
Push-Button Controlls
Calibration and setpoint settings are easy to adjuxt using intuitive front panel controls. No special tools are required
Easy-to-use Analog Signals
Provides a one volt per decade logarithmic signal (0 - 7V or 1 - 8V) or a selectable non-linear signal (0 - 9V) that is backwards compatible with older Convectron Gauge controllers
Serial Communication Interface Option
RS-232 interface allows easy integration with computer controlled systems.
Built-in Convectron Gauge Simulator
Simulates a Convectron Gauge, which allows system diagnostics without the need of a vacuum system
Self Diagnostics
the A/D (Convectron Gauge bridge voltage) and analog outputs are continuously monitored for erroneous readings.
Compact 1/8 DIN Controller
Easy to install in space restricted locations.
Rugged All-Metal Package
Provides a high level of immunity to RF noise and is RoHS / CE Compliant
| Technical Specifications | ||
|---|---|---|
| Measurement Range * ‡ | ||
| Torr | 1 x 10-4 to atmosphere | |
| mbar | 1 x 10-4 to atmosphere | |
| Pa | 1 x 10-2 to atmosphere | |
| Resolution | 1 x 10-4 Torr, 1 x 10-4 mbar,1 x 10-2 Pa | |
| Display | Vacuum Flourescent Update Rate: Every 0.5 sec |
|
| Input Power | 12 to 24 Vdc, 6 W continuous | |
| Weight | 720 gn (25 oz) | |
| Operating Temperature | 0°C to 40° ambient, non-condensing | |
| CE Compliance> | ||
| Safety | Low Voltage Directive 2006/95/EC, EN61010-1 | |
| EMC | EMC Directive 2004/104/EC, EN61326-1:2006 | |
| Environmental | RoHS Compliant | |
| Setpoint relays (optional) | ||
| Contact Rating | 5A at 250VAC resistive load | |
| Range | 1 x 10-3 to 1000 Torr, 1 x 10-3 to 1333 mbar, 1 x 10-1 Pa to 1333 kPa | |
| Resolution | 2 significant digits | |
| Communicative Interface (optional) RS-232 |
||
| Data format | ASCII, 8 data bits, one stop-bit, no parity, no handshake | |
| Baud rate | 1200, 2400, 4800, 9600, 19200, 38400, (19200 Default) | |
| Convectron Gauge | ||
| Sensor material | Gold-plated tungsten, platinum | |
| Other materials exposed to gas | 304 stainless steel, borosilicate glass, Kovar, alumina, NiFe alloy, polyimide | |
| Internal volume | 40 cm3 (2.5 in3 | |
| Weight | 85 grams (3 ounces) | |
| Gauge operating temperature | 0°C to 50°C ambient, non-condensing | |
| Gauge bakeout temperature | 150°C maximum, non-operating, cable disconnected | |
| Mounting Orientation | Horizontal Preferred | |
| Cable bakeout temperature | 105°C maximum | |
* Measurements will change with different gases and mixtures. Correction parameters for common gases are provided in the instruction manual.
‡ Convectron Gauges are not intended for use with flammable or explosive gases.
| UOM=EA | |||||
| Part No. | Description | est wt. |
Quantity In Stock |
Price | Quantity to order |
|---|---|---|---|---|---|
| Convectron Vacuum Gauge Controller | |||||
| 475001AAT | Controller RS232 - 0 set points; Torr Reading * | 0 | 0(#) | $795.00 | |
| 475001A2T | 475 CONTROLLER/TORR/115V RS-232 OPTION; 2 SETPOINT RELAYS; TORR READING * | 0 | 0(#) | $895.00 | |
| IGC475T | 475 CONTROLLER/TORR/115V | 0 | 0(#) | $895.00 | |
| IGC475M | 475 CONTROLLER/MBAR 115V * | 0 | 0(#) | $895.00 | |
| Convectron Gauges | |||||
| 275071 | 1/8in NPT Convectron Gauge Tube (HP #0960-0540) | 0.25 | 4 | $245.00 | |
| 275185 | ION GAUGE TUBE VCR FITTINGS | 0 | 0(#) | $155.00 | |
| 275282 | 1/2 INCH VCR-FEMALE FITTI | 0 | 0(#) | $190.00 | |
| 275256 | 1 5/16 ROTATABLE MINI FLANGE" | 0 | 0(#) | $191.00 | |
| 275238 | CONVECTRON GAUGE TUBE - 2.75""" ROTATABLE CONFLAT | 0 | 0(#) | $191.00 | |
| 275203 | GRANVILLE CONVECTON TUBE | 0 | 0(#) | $164.70 | |
| 275196 | NW25 Convectron Tube | 0.25 | 0(#) | $205.00 | |
| 275316 | 1/8 NPT WITH 1/2" TUBULAT | 0 | 0(#) | $130.00 | |
| Power Supplies | |||||
| 4750081 | POWER SUPPLY WALL MOUNT 115 VAC | 0 | 0(#) | $97.25 | |
| 4750083 | POWER SUPPLY CE COMPLIANT 220 VAC EUROPE | 0 | 0(#) | $97.25 | |
| Convectron Gauge Cables | |||||
| 47501210 | 10' CABLE | 0 | 0(#) | --- | --- |
| 47501225 | 475 CONVECTRON CABLE-25' | 0 | 0(#) | $165.00 | |
| 47501250 | 475 CONVECTRON CABLE-50' | 0 | 0(#) | $185.00 | |
| 475012100 | 475 CONVECTRON CABLE-100' | 0 | 0(#) | $275.00 | |
| 475012200 | 475 CONVECTRON CABLE-200' | 0 | 0(#) | $425.00 | |
| 475012500 | 475 CONVECTRON CABLE-500' | 0 | 0(#) | $875.00 | |
| (#) Standard lead-time for out-of-stock items is approximately two weeks. | |||||
Ordering information.
International (non-US) prices available through your
local dealer.
|
|||||
| SIS Catalog Cross Reference | |
|---|---|
| Page # | Part Numbers |
| B9 - Agilent 5971/5972/5973/5975 & GCD Accessories by S.I.S. | 275071 |
| F6 - Convectron™ Ionization Gauge Controllers | 275071, 475001AAT |
| F7 - Vacuum Gauge Controller | 275071, 275196 |
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