Operator's manual Owner's manual

10
Gas sampling and gas conditioning technology 10-5.1-ME
13 AUFBAU
The devices PAS100 - 300 have natural ventilation.
In series PAS400 – 500 air circulation is provided by a fan on the back wall of the chamber.
The incoming air (1) is warmed in a preheat chamber (2) in both convection and fan-circulation ovens.
The preheated air enters the chamber (4) through ventilation slots (3) in the chamber side wall. The
fan (5) on the chamber back wall produces a large air throughput and a more intensive horizontal
forced circulation compared with natural convection. The air valve (6) on the back of the oven controls
the rate of air intake and discharge (air change) (7).
Figure 2 Design of the protective housing
13.1 BASIC EQUIPMENT OF THE HEATED PROTECTIVE HOUSINGS
 Electronic PID controller with permanent power matching, auto-diagnostic system for rapid fault
finding (see chapter 15 “Error messages“)
 Manually adjustable air valve for re-circulation or fresh air operation
 Programmable electronic switch-off timer up to 99 h 59 min
 Recessing push/turn control for simple operation of oven
 Visual alarm indication
 Monitor relay to switch off heating in case of fault
 Mechanical temperature limiter (TB Class 1)
 High-grade PT100 temperature sensor Class A in 4-wire circuit
 Wall bracket