JUMO 60.5051 Explosion-protected surface-mounting thermostat, ATH-EXx Operating Manual - Manual (Page 8)

2 Instrument identification
8
2.2 Type designation
ATH-EXx-. .- .
ATH Surface-mounting thermostat (with capillary)
ATH- EXx Marking for explosion-protected version
ATH-EXx- . . - . Code number for the function:
2 = 0 Temperature monitor (TW)
with changeover contact.
Limit adjustable within the housing.
7 = 0 Temperature limiter (TB)
with changeover contact and restart lock-out.
Limit adjustable within the housing.
7-F = 0 Temperature limiter (TB)
with changeover contact and restart lock-out.
Limit is factory-set.
20 = 0 Fail-safe temperature monitor (STW)
with changeover contact.
Limit adjustable within the housing.
70 = 0 Break-proof protection temperature limiter (STB)
with change-over contact and restart inhibit.
The limit value can be set by the installing engineer–
before commissioning the plant – within the housing.
70-F = 0 Break-proof protection temperature limiter (STB)
with change-over contact and restart inhibit.
Limit value set to a fixed value at the factory.
ATH-EXx-. .- . F = 0 Designation for factory-set limit setting.
Extra code (TZ) 679: Min. operating temperature: -50°C