• Self-monitoring (STB/STW) in the event of a pressure drop
• Safety cut-out (STB/STW)
• Tested according to DIN EN 14597
Data Sheet 603021
Page 1/10
Brief description
Thermostats control and monitor thermal processes. Instruments of the ATH series are available as temperature controllers TR, temperature monitors TW, safety temperature monitors
STW (STB), and safety temperature limiters STB. When malfunctions occur, the STB places the
system being monitored in a safe operating status.
Surface-mounted thermostats operate according to the fluid expansion principle – a microswitch is used as an electrical switching element.
Switching function
Temperature controller TR and temperature monitor TW
If the temperature on the temperature probe exceeds the setpoint value, the microswitch is activated by the transmission mechanics and the electrical circuit is opened or closed. If the temperature falls below the selected setpoint value (by the amount of the switching differential), the
microswitch is reset to its initial position.
Restart lock on the safety temperature limiter STB
If the temperature on the temperature probe exceeds the set limit value, the electrical circuit is
opened and the microswitch is mechanically locked.
The microswitch can be manually unlocked once the dangerous temperature drops by approx.
10 % of the scale range (approx. 15 % with a limit value setting > + 350 °C).
Using the safety temperature monitor STW as a safety temperature limiter STB
The circuit following the thermostat must comply with DIN EN 14597 and VDE 0116.
ATHs-1
Self-monitoring on the safety temperature limiter STB
and the safety temperature monitor STW (STB)
If the measuring system is destroyed (i.e. if the expansion fluid escapes) the pressure in the
membrane of the STB and STW (STB) drops and permanently opens the electrical circuit. Unlocking is then no longer possible.
If the probe has cooled down to a temperature below approx. -20 °C, the electrical circuit is
opened; when the temperature rises above approx. -20 °C, the STB must be unlocked manually
using the restart knob. The STW (STB) automatically restarts.
ATHs-1, process
connection with screw-in thermowell "20"
Process connection with screw-in thermowell "30" and intermediate piece for scale limit value above +150 °C:
ATHs-2, ATHs-20, process
connection with screw-in thermowell "20"
ATHs-70, ATHs-70/574, process
connection with screw-in thermowell "20"
Page 5/10
Process connection with thermowell "31" screw-in thermowell with intermediate piece, open:
Stock versions with rigid thermowell
Temperature controller (TR)
Part no.Type
Control range / limit value
range
°C
60001517ATHs-1–10 to +403-4
60000634ATHs-1+20to+501.515 x 100 CrNi
60000332ATHs-1+20 to +1003-48x 120
60001548ATHs-1+20 to +1003-48x 120 CrNi
60001125ATHs-1+20 to +1003-48x 150
60000174ATHs-1+20 to +1001.58 x 200
60001126ATHs-1+20 to +1003-48 x 200
60000481ATHs-1+20 to +1503-48x 100
60001035ATHs-1+20 to +1503-48 x 200
60001127ATHs-1+20 to +1503-48x 300
60003316ATHs-1+50 to +2003-4
60003317ATHs-1+50 to +3003-48x150 CrNi
60003318ATHs-1+20 to +50058x 200 CrNi
2014-01-08/00073225
Switching
differential
%
Process connection
(delivery within 3 working days after receipt of order)
(delivery within 3 working days after receipt of order)
Immersion tube Ø × length
screw-in sleeve
mm
8 x 200
60001549ATHs-2+20 to + 501.515 x 100 CrNi
60001128ATHs-2+20 to + 503-48 x 200
60000177ATHs-2+20 to + 901.515x100
60000959ATHs-2+20 to + 906-815x 100
60001129ATHs-2+20 to + 903-48x 150
60000331ATHs-2+20 to +1003-48x 120
60001552ATHs-2+20 to +1003-48x 120 CrNi
60000179ATHs-2+20 to +1003-48x 150
"20" G
1
/
2
60001039ATHs-2+20 to +1003-48 x 200
60001130ATHs-2+20 to +1003-48x 300
60000483ATHs-2+20 to +1503-48x100
60001551ATHs-2+20 to +1503-48x 100 CrNi
60000485ATHs-2+20 to +1503-48 x 200
60001554ATHs-2+20 to +1503-48 x200 CrNi
60000182ATHs-2+20 to +1503-48x 300
60003319ATHs-2+50 to +2003-4
60003320ATHs-2+50 to +2003-48x 200 CrNi
60001556ATHs-2+50 to +3003-48x 150 CrNi
"30" G
1
/
2
8x 120 CrNi
60003322ATHs-2+20 to +50058x 200 CrNi
Safety temperature monitor STW (STB)(delivery within 3 working days after receipt of order)
Part no.Type
Control range / limit value
range
°C
60001478ATHs-20+20 to +1504-6"20" G
60003323ATHs-20+50 to +3005"30" G
60002217ATHs-20+50 to +3504-6"46" G
60003324ATHs-20+20 to +5007"31" G
(delivery within 3 working days after receipt of order)
screw-in sleeve/
weld-in sleeve
Immersion tube Ø × length
mm
8x 150
60001043ATHs-70+ 30 to +110——8 x 200
60000189ATHs-70+ 30 to +110——8 x300
60001044ATHs-70+ 60 to +130——8 x150
"20" G
1
/
2
60000190ATHs-70+ 60 to +130——8 x 200
60001020ATHs-70+ 20 to +150——8 x 200
60003325ATHs-70+130 to +200——
60003326ATHs-70+130 to +200——8x 300 CrNi
"30" G
1
/
2
8x 150 CrNi
60003327ATHs-70+ 50 to +300——8x 200 CrNi
60001524ATHs-70/574+ 30 to +110——
60001522ATHs-70/574+ 20 to +150——8 x 200
60003328ATHs-70/574+ 50 to +300——"30" G
60002218ATHs-70/574+ 50 to +350——"46" G
60003329ATHs-70/574+ 20 to +500——"31" G
60001476ATHs-70/574+ 20 to +500——"30" G
"20" G
1
/
2
1
/
2
3
/
4
1
/
2
1
/
2
8x 150
8 x 200 CrNi
170 steel, conical
8 x 200 CrNi
8x 200 CrNi
Dimensions,versions with capillary
ATHf-1, process connection "10"
plain cylindrical probe
ATHf-2, ATHf-20, process connection "10"
plain cylindrical probe
ATHf-70, ATHf-70/574, process connection "10"
plain cylindrical probe
2014-01-08/00073225
ATHf-20/r, ATHf-70/r, process connection "42"
plain cylindrical probe with weld-in sleeve G 3/4
60001134ATHf-1–10 to +0403-41000
60001004ATHf-1+20 to +1003-410006x 107
60000955ATHf-1+20 to +1503-410006 x 88
60001133ATHf-1+50 to +3003-410006x 63
60002113ATHf-1+20 to +500510006x 148
Control range / limit value
range
°C
Switching differ-
ential
%
Capillary mm
(delivery within 3 working days after receipt of order)
Process
connection
"10"
Plain
cylindrical
probe
Probe ø × length mm
6x185
Temperature monitor (TW)(delivery within 3 working days after receipt of order)
Part no.Type
60000482ATHf-2+00to+0503-41000
60000962ATHf-2+00 to +1003-410006x 107
60001212ATHf-2+00 to +1003-420006x107
60000963ATHf-2+20 to +1503-410006 x 88
60001210ATHf-2+20 to +1503-420006 x 88
60000187ATHf-2+50 to +2003-410006x 101
60001038ATHf-2+50 to +3003-410006x 63
60001208ATHf-2+50 to +3003-420006x 63
60002122ATHf-2+20 to +500510006x 148
60002114ATHf-2+20 to +500520006x 148
Control range / limit value
range
°C
Switching
differential
%
Capillary mm
Process
connection
"10"
Plain
cylindrical
probe
Probe ø × length mm
6x185
Safety temperature monitor STW
and safety temperature limiter (STB)
Part no.Type
60002261ATHf-20/r+ 20 to +50074000"42" G
60001136ATHf-70+ 30 to +110——1000
60001206ATHf-70+ 30 to +110——20006 x108
60001041ATHf-70+ 20 to +150——10006 x 77
60001205ATHf-70+ 20 to +150——20006 x 77
60001525ATHf-70/574+ 20 to +150——10006 x 77
60001204ATHf-70+ 50 to +200——20006 x 85
60001290ATHf-70/574+ 50 to +200——10006 x 85
60001040ATHf-70+ 50 to +300——10006 x 55
60001191ATHf-70+ 50 to +300——20006 x 55
60001528ATHf-70/574+ 50 to +300——10006 x 55
60002086ATHf-70+ 20 to +500——10006 x127
60002088ATHf-70/574+ 20 to +500——10006 x127
60002099ATHf-70/574+ 20 to +500——20006 x127
60002262ATHf-70/574/711+ 20 to +500——4000"42" G
Control range / limit value
range
°C
Switching
differential%Capillary mm
(delivery within 3 working days after receipt of order)
00Without thread (process connection 10)
13External thread G 1/2
(10) Material of process connection
00Only with process connection 10
46CuZn(Brass)
20CrNi(Stainless steel 1.4571)
(11) Insertion length "S" (immersion tube length)
000ATHf without thermowell
100100 mm
120120 mm
150150 mm
200200 mm
300300 mm
400400 mm
...... Special length, specifications in plain text
(12) Diameter "D" (immersion tube diameter)
00ATHf without thermowell
0808mm
1010 mm
(13) Diameter "d" (probe diameter)
66mm
88mm
(14) Extra codes
2
000Without extra code
248"k"Wall mount
574
"U"
Microswitch with N/C contact,
restart lock, and additional signal contact (only for STB)
701"a"Case lid made of aluminum diecasting (not with extra code "711")
702"au"Snap-action switch contact, gold-plated
(only with switching differential 3 %, 5 %, and 7 % and STB with N/C contact)
711"r"Switching head mounting with 2 screws through the case bottom section,
lateral capillary exit on the case, lid, and bottom section made of plastic
764"b"Mounting flange made of steel sheet, capillary exit on the case spigot