

| InstruTech Quick Product Overview | ||||||||
|---|---|---|---|---|---|---|---|---|
| Model | Vacuum Gauge Type | Measurement Range | Controller | Display | Analog Output(s) | Set Point(s) | Digital Output(s) | Compatibility |
IGM 401 "Hornet"![]() |
Miniature Ionization | 1 x 10-9 to 5 x 10-2 Torr 1.3 x 10-9 to 6.7 x 10-2 mbar 1.3 x 10-7 to 6.7 Pa |
Built-in with Display | 3 digits plus 2 digits exponent OLED Units in Torr/mTorr, bar/mbar, Pa / Kpa |
(1) log linear | 1 Relay - SPDT | RS485 Open Collector transistor for degas and filament on/off status | Direct drop-in pin-pin plug-compatible for the GP* Micro-Ion® gauges. |
IGM 402 "Hornet"![]() |
Miniature Ionization with Dual Convection - Operates one built-in Ionization gauge and two Convection gauges | 1 x 10-9 to 1000 Torr 1.3 x 10-9 to 1333 mbar 1.3 x 10-7 Pa to 133 KPa |
Built-in with Display | 3 digits plus 2 digits exponent OLED Units in Torr/mTorr, bar/mbar, Pa / Kpa |
(3) log linear | 3 Relays - SPDT | RS485 Open Collector transistor for degas and filament on/off status | Direct drop-in pin-pin plug-compatible for the GP* Micro-Ion® gauges when used as a stand-alone Ion gauge. |
CVM 211 "Stinger"![]() |
Convection Module | 1 x 10-4 to 1000 Torr 1 x 10-4 to 1333 mbar 1 x 10-2 Pa to 133 KPa |
Built-in with Display | 3-digit LED Units in Torr/mTorr, bar/mbar | (1) linear or (1) non-linear (GP* - S curve) | 1 Relay - SPDT | none | Direct drop-in pin-pin plug-compatible for the GP* Mini-Convectron® Modules. |
| CVM 201 "Super Bee" ![]() |
Convection Module | 1 x 10-4 to 1000 Torr 1 x 10-4 to 1333 mbar 1 x 10-2 Pa to 133 KPa |
Built-in with Display | 4 digit LCD Units in Torr/mTorr, bar/mbar | (1) linear and (1) log linear or non-linear (GP* - S curve) | 2 Relays - SPDT | RS485 + RS232 | Direct drop-in pin-pin plug-compatible for the GP* Mini-Convectron® Modules. |
VGC 301 "Controller"![]() |
Convection Gauge Controller | 1 x 10-4 to 1000 Torr 1 x 10-4 to 1333 mbar 1 x 10-2 Pa to 133 KPa |
Connects to "Worker Bee" or GP* Convectron® | 4 digit LCD Units in Torr/mTorr, bar/mbar | (1) linear and (1) log linear or non-linear (GP* - S curve) | 2 Relays - SPDT | RS485 + RS232 | Connects to InstruTech "Worker Bee" or GP* Convectron® |
CVG 101 "Worker Bee"![]() |
Convection Gauge Tube | 1 x 10-4 to 1000 Torr 1 x 10-4 to 1333 mbar 1 x 10-2 Pa to 133 KPa |
None: Connects to VGC301 Controller or existing GP Controller | N/A | None - Raw Sensor only - GP* ConvectronŽ equivalent | none | none | Direct drop-in pin-pin plug-compatible for the GP* Convectron® gauges. |
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Convectron®,Mini-Convectron® and Micro-Ion® are registered trademarks of Brooks Automation/Granville Phillips. Conflat® and Mini-Conflat® are registered trademarks of Varian Vacuum Cajon VCR and VCO are registered trademarks of Swagelock Company |
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InstruTech Vacuum Instrumentation
Utilizing the most recent advances in vacuum gauge sensor
and controller design.
New Ionization Vacuum Gauge with Dual Convection
Introducing the first modular Ionization Vacuum Gauge Capable of operating two Convection gauges.






