EN2R-9005 0406R3-NE 16
PERFORMANCE
Fixed switch differential
On controls and recycling limits a fixed differential of:
4 ± 1.5°C, 8 ± 3°C or
12 ± 3°C is supllied as a standard.
Optional are:
7 ± 2.7°F,
14 ± 5.4°F
15 ± 5.4°F
Adjustable switch differential
On controllers and recycling limiters an adjustable differential
of:
4 ± 1.5°C ... 10 ± 3°C or
7 ± 2.7°F ... 18 ± 5.4°F can be supllied.
Manual or tool reset switch differential
On the thermal cut-out versions (manual or tool reset) of the
panel mounted, the single direct mounted and the dual direct
mounted Aquastats the maximum reset differential might be
30°C
NOTE: The differential (thermal) is dependant on the rate of
change of the temperature in the heating system.
The given differential datas are valid for a rate of 1°C
per minute.
Ambient temperature error
Example:
An ambient error ratio of 1 : 6 means that an ambient
change of 6°C will cause a setpoint shift of the Aquastat of
1°C.
Time constant
• With well
τ ≤ 30 s for panel mounted, single direct mounted, dual
direct mounted and triple direct mounted Aquastats.
• Without well
τ ≤ 4 s
• With sensor assy (Surface mounted Aquastat)
τ ± 50 s
Setpoint accuracy
+0/-8°C for thermal cut-outs
Ratio of ambient error Max. setting Min. setting
With capilliary lenth of 1000 mm 1 : 5.5 1 : 8.5
With capilliary lenth of 50 mm 1 : 12 1 : 25
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