JUMO 603021 User Manual

JUMO GmbH & Co. KG

Delivery address: Mackenrodtstraße 14

36039 Fulda, Germany

Postal address:

36035 Fulda, Germany
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Internet: www.jumo.net

JUMO Instrument Co. Ltd.

JUMO House
Temple Bank, Riverway
Harlow, Essex CM20 2DY, UK
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Internet: www.jumo.co.uk

JUMO Process Control, Inc.

6733 Myers Road
East Syracuse, NY 13057, USA
Phone: [phone]

1-800-554-5866
Fax: [phone]
E-mail: [e-mail]
Internet: www.jumousa.com

Surface-Mounted Thermostat

ATHf-70

ATH series

Special features

• Sturdy case (protection type IP 54))

• Microswitch

• 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.

Approvals

2014-01-08/00073225

Data Sheet 603021

JUMO GmbH & Co. KG

Delivery address: Mackenrodtstraße 14

36039 Fulda, Germany

Postal address:

36035 Fulda, Germany
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Internet: www.jumo.net

JUMO Instrument Co. Ltd.

JUMO House
Temple Bank, Riverway
Harlow, Essex CM20 2DY, UK
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Internet: www.jumo.co.uk

JUMO Process Control, Inc.

6733 Myers Road
East Syracuse, NY 13057, USA
Phone: [phone]

1-800-554-5866
Fax: [phone]
E-mail: [e-mail]
Internet: www.jumousa.com

Approvals

Types Switching function DIN registry no. Tests

With rigid thermowell With capillary

ATHs-10 ATHf-10 TR TR 891

ATHs-20 ATHf-20 TW TW 892

ATHs-20 ATHf-20 STW (STB) STW (STB) 894 S

ATHs-70 ATHf-70 STB STB 895

Technical data

Control ranges and temperature probes

Liquid-filled

Type Control range / limit

value range

in °C

ATH.-1
ATH.-2

-20 to +050

-10 to +040

+00to+050
+00 to +100

+20 to +090
+20 to +120
+20 to +150
+30 to +110
+50 to +200
+50 to +250
+50 to +300
+50 to +350
+60 to +130

ATH.-20
ATH.-70

+20 to +150
+30 to +110
+50 to +250
+50 to +300
+60 to +130

ATH.-1
ATH.-2

+20 to +400
+20 to +500
+20 to +500

ATH.-20
ATH.-70

+20 to +400
+20 to +500
+20 to +500

Max. allowable

probe temperature

in °C

060
050
060

125
115
140
175
135
230
290
345
405
150

175
135
290
345
150

Gas-filled

460
575
575

460
575
575

Maximum

capillary length

in mm

5000

5000

1000
2000
4000

1000
2000
4000

You will find Declarations

- DIN EN 14597

- Pressure Equipment
Directive 97/23/EC
(ATH.-20 and
ATH.-70 only)

➾ Data sheet 603021

or they can be sent to you

Probe length, dimension "L" in mm

Probe ø "d" in mm, ø "6" = standard

68

141
185
185
107
138
106

088

125
101

073
063
053

135

077

108

064
055

116

278
148
202

176
127
202

Page 2/10

of Conformity on

the Internet at:
www.jumo.net

➾ Products

➾ Thermostats

upon request.

092

115
115

075
091
075
065
084
072
054
049

- - -

090

60
75

049

- - ­79

158

092

119

106

081

119

Capillary and temperature probe

Type Scale limit value Capillary Temperature probe Comments

ATH.- . . Up to 200 °C Copper (Cu)

ø 1.5mm

Material-no. Cu-DHP

Up to 350 °C Copper (Cu)

ø 1.5mm

Material-no. Cu-DHP

Up to 500 °C Stainless steel (CrNi)

ø 1.5mm

Copper (Cu)

Material-no. Cu-DHP

Hard soldered

Stainless steel (CrNi)

Material no. 1.4571

Hard soldered

Stainless steel (CrNi)

Material no. 1.4571

–

–

–

Welded

Up to 350 °C Stainless steel (CrNi)

ø 1.5mm

Stainless steel (CrNi)

Material no. 1.4571

Available at extra cost

Welded

Capillary length 1000 mm, max. 5000 mm as standard

Minimum bending
radius of the capillary

2014-01-08/00073225

5mm

Data Sheet 603021

JUMO GmbH & Co. KG

Delivery address: Mackenrodtstraße 14

36039 Fulda, Germany

Postal address:

36035 Fulda, Germany
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Internet: www.jumo.net

JUMO Instrument Co. Ltd.

JUMO House
Temple Bank, Riverway
Harlow, Essex CM20 2DY, UK
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Internet: www.jumo.co.uk

JUMO Process Control, Inc.

6733 Myers Road
East Syracuse, NY 13057, USA
Phone: [phone]

1-800-554-5866
Fax: [phone]
E-mail: [e-mail]
Internet: www.jumousa.com

Electrical data

Switching element ATH.-1

ATH.-70 ATH.-70/574

ATH.-2

ATH.-20

Max. switching
capacity

Microswitch with changeover contact Microswitch with N/C contact

and restart lock

AC 230 V +10 %, 10 (2) A, cos ϕ = 1 (0.6)

DC 230 V +10 %, 0.25A

With switching differential 1.5 % and 2 %

AC 230 V +10 %, 6 (1.2) A, cos ϕ = 1 (0.6)

––

Microswitch with N/C contact,

restart lock, and

additional signal contact

Gold-plated microswitch, extra code /702*

(* for 3 %, 5 %, and 7 % switching differentials only)

24 V AC / DC, 0.1 A

Contact resistance 2.5 to 10 m

Contact reliability To ensure a high switching reliability, we recommend a minimum load of:

With silver contacts:

AC / DC = 24 V, 100 mA

For gold-plated contacts ("702" symbol):

AC / DC = 10 V, 5 mA

Operating data

Switching differential
in % of the
control range /
limit value range

Switching function With liquid-filled measuring system

Nominal value Possible actual value

TR, TW 3 3 max. 4 Standard

6 6 max. 8 Upon request

1.5 1 max. 2 Extra cost

With gas-filled measuring system

5 4 max. 8 Standard

9 8 max. 12 Upon request

2 1.5 max. 2.5 Extra cost

With liquid-filled measuring system

STW (STB) 5 4 max. 6 Standard

9 8 max. 11 Upon request

2 1 max. 3 Extra cost

With gas-filled measuring system

75 max. 12Standard

9 8 max. 16 Upon request

2 1.5 max. 3 Extra cost

Switching point accu­racy in % of the con­trol range / limit value
range

Ambient
temperature influence
based on the
control range /
limit value range

When the ambient temperature on the case deviates from the calibration ambient temperature of 22 °C,

TR, TW: In the upper third of the scale ± 1.5 %, at scale beginning ± 6 %

STB, STW (STB): In the upper third of the scale +0/-5 %, at scale beginning +0/-10 %

a switching point offset occurs.

Higher ambient temperatures = lower switching point

Lower ambient temperature = higher switching point

Surface-mounted thermostats with scale limit value

< 200 °C ÷ 200 °C ≤ 350 °C > 350 °C ≤ 500 °C

TR / TW STB/STW (STB) TR / TW STB/STW (STB) TR / TW STB/STW (STB)

Influence on the switching head

0.08%/K 0.17%/K 0.06%/K 0.13 %/K 0.14%/K 0.12%/K

Influence on the capillary per meter

0.047%/K 0.054%/K 0.09%/K 0.11%/K 0.04%/K 0.03%/K

Admissible storage
temperature

Admissible
ambient
temperature
during use

Rated position (NL)

2014-01-08/00073225

According to DIN 16 257, NL 0 to NL 90 (different rated positions (NL) upon request)

-50 to +50 °C

Max. +80 °C

Page 3/10

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