Application Note: Comparison of Module Specifications - InstruTech CVM-201 "Super Bee" and Brooks Automation/Granville-Phillips 275 Mini-Convectron®
| InstruTech CVM-201 "Super Bee" | GP 275 Mini-Convectron® | |
| display | > LCD - standard on all units > 4 digits from 1100 Torr to 1000 Torr 3 digits from 999 Torr to 10.0 mTorr 2 digits from 9.9 to 1.0 mTorr > user-selectable Torr, mbar, or Pa. |
> LED - optional on some models. > 3 digits from 100 mTorr to 999 Torr, 2 digits from 10 to 99 mTorr, 1 digit from 1 to 9 mTorr. > fixed display in Torr, mbar, or Pa. |
| materials exposed to gases | gold-plated tungsten, 304 & 316 stainless steel, glass, nickel, Teflon | gold-plated tungsten, 304 stainless steel, glass, Kovar, alumina, NiFe alloy, polyimide |
| internal volume | 26 cm3 (1.589 in3) | 35 cm3 (214 in3) |
| internal surface area | 59.7 cm2 (9.25 in2) | 218.8 cm2 (33.92 in2) |
| weight | 340 gm (12 oz) | 340 gm (12 oz) |
| housing | aluminum extrusion 105 x 66 x 35mm (4.12 x 2.58 x 1.35 inches) | aluminum extrusion 110 x 64 x 41mm (4.3 x 2.5 x 1.6 inches) |
| fittings/flanges | 1/8"NPT-1/2" tubulation, 4VCR, 8VCR, Mini-Conflat® (NW16CF), 2-3/4" Conflat®(NW35CF), KF16, KF25, KF40 | 1/8"NPT-1/2" tubulation, 4VCR, 8VCR, Mini-Conflat® (NW16CF), 2-3/4" Conflat®(NW35CF), KF16, KF25, KF40 |
| operating temperature | 0 to +40 oC | 0 to +40 oC |
| storage temperature | -40 to +70 oC | -40 to +70 oC |
| bakeout temperature | 150 oC (gauge only - electronics removed) | 150 oC (gauge only - electronics removed) |
| mounting position | horizontal | horizontal |
| analog output(s) | 1) non-linear analog - standard S-curve 0.375 to 5.659 Vdc 2) linear analog - standard 0 to 10 Vdc for 0 to 1 Torr - user scalable 3) log-linear analog - standard 1 to 8 Vdc, 1V/decade |
1) non-linear analog - standard S-curve 0.375 to 5.659 Vdc 2) linear analog - optional 0 to 10 Vdc for 0 to 1 Torr - fixed |
| digital interface | RS485/232 - standard | RS485, DeviceNet - optional |
| input power | 11 to 30 Vdc, protected against power reversal, transients, and over-voltages | 11.5 to 26.5 Vdc, protected against power reversal, transients, and over-voltages |
| trippoint relays | 2 - standard on all units | 0, 1, or 2 - optional on some units |
| configuration | single-pole double-throw relays (SPDT) | single-pole double-throw relays (SPDT) |
| contact rating | 1A at 30 Vdc resistive, or ac non-inductive | 1A at 30 Vdc resistive, or ac non-inductive |
| trippoint range | 1x10-3 to 1000 Torr | 1x10-3 to 1000 Torr |
| adjustment | a) adjust value by panel pushbutton up/down keys and display b) adjust value, direction, and hysteresis by software/interface |
a) adjust value by recessed potentiometer b) adjust value, direction, and hysteresis by software/interface |
| connectors | 1) 9-pin D male 2) 15-pin high-density D male |
Six different pinout configurations of 9-pin or 15-pin D connectors. |
| RF/EMI protection | CE compliant | CE compliant |
| configuration | single-pole double-throw relays (SPDT) | single-pole double-throw relays (SPDT) |
| Mini-Convectron® specifications are from Brooks Automation/Granville-Phillips data sheet DS GP275833 5/02 |
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Convectron® is a registered trade mark of Brooks Automation/Granville-Phillips Cajon® is a registered trade mark of the Swagelok Company. Conflat® is a registered trade mark of Varian Vacuum Technologies |
| The chart below shows calibration curves for three common gases, for InstruTech CVG and Brooks Automation/Granville-Phillips Convectron® gauges, compared to a capacitance manometer (true total pressure). |
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InstruTech Vacuum Instrumentation
Utilizing the most recent advances in vacuum gauge sensor
and controller design.
