Specs at a glance
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Accuracy
class A acc. to IEC 60751
-
Response time
t50 = 1 s
t90 = 1.5 s -
Max. process pressure (static)
at 20 °C: 50 bar (725 psi)
-
Operating temperature range
PT 100:
-50 °C ...200 °C
(-58 °F ...392 °F) -
Max. immersion length on request
up to 600,00 mm (23,62'')
Field of application
iTHERM CompactLine TM311 sanitary thermometer provides accurate and fast process temperature measurements in hygienic and aseptic applications. Its temperature sensor offers a 4-wire connection or feeds into a smart temperature transmitter with 4 to 20 mA, IO-Link (auto-detect) or switch output. Featuring TipSens technology, the RTD (Pt100; Class A) delivers response times as low as 1.5 s (t90) for optimum process control. This versatile device is a great choice to drive plant standardization.
Developed for universal use in sterile applications
High standardization potential for skid builders, machine and plant manufacturers
Measuring range: -50 to 200 °C (-58 to 392 °F)
Pressure range: Up to 50 bar (725 psi)
Protection class: IP69
Output: Pt100 (4-wire connection); IO-Link, 4 to 20 mA, 1x PNP switch
International approvals: 3-A, EHEDG, ASME BPE, FDA, EC 1935/2004, EN 2023/2006, TSE/ADI, GB4806-2016, GB9685-2016; Marine approval acc. to DNV GL
Benefits
Fast installation and easy commissioning:
- Compact dimensions for installation in tight spaces
- Standard M12 connector with IP69 for easy electrical connection
- Recommended process immersion lengths for optimum measurement
- Preset temperature rangeExcellent temperature measurement performance:
- Short response times as low as 1.5 s (t90)
- High sensor accuracy even with short immersion lengths
- Improved measuring accuracy with transmitter-sensor matchingSafe and reliable operation:
- Device safety to EN 610101-1 and CSA C/US
- Electromagnetic compatibility (NAMUR NE 21)
- Device diagnostic information (NAMUR NE 43)
- Hygienic design manufactured from high-grade stainless steel
- Marine approval
Fundamental selection
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Simple products
- Easy to select, install and operate
Technical excellence
Simplicity

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
-
Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
|
Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
|
Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
|
Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
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Measuring principle
Resistance Temperature Detector
-
Characteristic / Application
metric and imperial style
compact temperature probe
fast response time
high accuracy
standard and hygienic design
hygienic process connection
threaded process connection -
Thermowell / protection tube
without
incl. thermowell
incl. T-/ellbow thermowell -
Insert / probe
pipe version, isolated wires, not flexible
-
Outer diameter protection tube / Insert
3,0 mm (0,12'')
6,0 mm (0,24'') -
Max. immersion length on request
up to 600,00 mm (23,62'')
-
Material protection tube/ thermowell
1.4435 Delta-Ferrit < 1%
316L -
Process connection
compression fitting
Thread
weld in adapter
clamp connections acc. to ISO2852
screwed pipe joint acc. to DIN 11851
aseptic screwed pipe joint acc. to DIN 11864-1
metallic sealing system
thread acc. to ISO 228 for liquiphant adaptor
Varivent
SMS 1147
T- and elbow pieces -
Tip shape
straight
reduced -
Surface roughness Ra
0,76 μm (29,92 μin)
0,38 μm (14,96 μin)
0,38 μm (14,96 μin) electropolished -
Operating temperature range
PT 100:
-50 °C ...200 °C
(-58 °F ...392 °F) -
Max. process pressure (static)
at 20 °C: 50 bar (725 psi)
-
Accuracy
class A acc. to IEC 60751
-
Response time
t50 = 1 s
t90 = 1.5 s -
Integration head transmitter
no (4…20mA Signal, IO-Link)
-
Certification
3A, EHEDG, ASME BPE, FDA, TSE
1935/2004, 2023/2006, 10/2011
DNVGL, BV
cCSAus
EAC
RCM
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