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Series 275 Mini-Convectron Module with DeviceNet
Instruction Manual - 275563
Chapter 2
2Introduction/Specifications
2.1 The Mini-Convectron Gauge Module
Unlike traditional thermocouple and Pirani gauges, Convectron gauges take advantage of heat loss
due to convection cooling at higher pressures. This extends the range of accurate, repeatable
vacuum measurements from less than 1 x 10
-4
Torr to 1000 Torr (atmosphere) N
2
or air.
The Mini-Convectron module is a self-contained measurement device incorporating Convectron
gauge technology and electronics in a compact modular design. The electronics and gauge are
packaged in an all-metal package that provides a rugged enclosure and a high level of immunity to
electrical noise. The Convectron gauge used in the module is field-replaceable.
The Mini-Convectron module is available in a variety of output configurations. This instruction
manual is for use with a Mini-Convectron Module with DeviceNet interface and two
pressure-threshold setpoint relays. The adjustable setpoints allow control of valves, switches, alarm
signals, or other controls.
This instruction manual covers Mini-Convectron Modules with, and without, digital displays.
(275538 = module with digital display; 275553 = module without digital display.)
Within this manual:
• The term “Module” refers to the entire Mini-Convectron Module.
• The term “Gauge” refers to the replaceable Convectron Gauge inside the module.
2.1.1 General Precautions
• Do not use the Mini-Convectron Module in an area of high vibration or extreme shock.
• Do not use the Mini-Convectron Module to measure pressures of explosive gases.
• Always be sure that the Mini-Convectron Module and all components of the vacuum system are
properly grounded.
Figure 2-1 Mini-Convectron Module with DeviceNet Interface
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