S S REGELTECHNIK THERMASGARD TF54 Series Immersion or Screw-In or Duct Temperature Sensor with Passive Output Instruction Manual

THERMASGARD® TF 54 xx
Operating Instructions, Mounting & Installation
Immersion ⁄ screw-in ⁄ duct temperature
sensor with passive output
6000-3050-0000-2XX 30500-2022 V212 03 ⁄ 2022

THERMASGARD TF54 Series Immersion or Screw-In or Duct Temperature Sensor

with Passive Output

TF 54
(IP 54)| TF 54 – KV
(IP 65)| TF 54 – Q
(IP 65)
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| |

High-performance encapsulation against vibration, mechanical stress and humidity
PS-PROTECTION
PERFECT SENSOR PROTECTION

Resistance thermometer ⁄ temperature sensor THERMASGARD ® TF 54 with passive output, with connecting head made from aluminium (optionally with cable gland or M12 connector according to DIN EN 61076-2-101) and straight protective tube. A basic unit in four variants through combination with accessories, eg, for robust applications with a separate immersion sleeve made from stainless steel. The duct sensor is used to detect temperatures in liquid or gaseous media. It is used in pipes, heating engineering, storage systems, compact district heating stations, warm and cold water systems, oil and lubrication cycle systems, mechanical, apparatus and plant engineering and throughout the industrial sector.

TECHNICAL DATA

Measuring range:| –35…+180 °C
(Tmax NTC = +150 °C, Tmax LM235Z = +125 °C)
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Sensors ⁄ output:| see table, passive (Perfect Sensor Protection)
(optionally also with two or other sensors)
Connection type:| 2-wire connection (4-wire connection on PT100, optional on other sensors)
Testing current:| < 0.6 mA  (Pt1000)
< 1.0 mA  (Pt100)
< 0.3 mA  (Ni1000, Ni1000 TK5000)
< 2.0 mW (NTC xx)
400 μA…5 mA   (LM235Z)
Insulating resistance:| ≥ 100 MΩ, at +20 °C (500 V DC)
Electrical connection:| 0.14 – 2.5 mm²,  via terminal screws on ceramic bas
Cable connection:| TF 54  (standard)
adjusting screw made of metal (M 20 x 1,5)
TF 54-KV  (optional)
cable gland, brass, nickel-plated
(M 20 x 1.5 ; with strain relief, exchangeable,
inner diameter 6 – 12 mm)
TF 54-Q  (optional)
M12 connector according to DIN EN 61076-2-101
(male, 5-pin, A-code)
Dimensions:| see dimensional drawing
Connecting head:| form B, material aluminium, colour white aluminium (similar RAL 9006), ambient temperature  –20…+100° C
Protective tube:| stainless steel, V4A (1.4571), Ø = 6 mm,
inserted length (EL) = 50 – 400 mm  (see table)
Process connection:| by means of immersion sleeve or mounting flange (accessories)
Humidity:| <  95 % r. H., non-precipitating air
Protection class:| III  (according to EN 60 730)
Protection type:| IP 54  (according to EN 60 529)  TF 54
IP 65  (according to EN 60 529)  TF 54-KV / TF 54-Q

ACCESSORIES

TH-ms  ⁄  xx| Immersion sleeve, brass, nickel-plated,
Ø = 8 mm, Tmax= +150 °C, pmax= 10  bar
---|---
TH-VA  ⁄  xx| Immersion sleeve, stainless steel, V4A (1.4571),
Ø = 8 mm, Tmax= +600 °C, pmax= 40  bar
TH-VA  ⁄  xx  ⁄  90| Immersion sleeve, stainless steel, V4A (1.4571), with neck tube
(90 mm), Ø = 8 mm, Tmax= +600 °C, pmax= 40  bar
MF-06-M| Mounting flange, metal, galvanised steel, Ø = 32 mm,
Ø = 6.3 mm tube gland,  Tmax= +700 °C
Type| Sensor ⁄ Output
---|---
TF54 / TF54-KV / TF54-Q| other sensors on request
TF54 xx PT100 (EL) MM| Pt100 (according to DIN EN 43 760, class B)
TF54 xx PT1000 (EL) MM| Pt1000 (according to DIN EN 43 760, class B)
TF54 xx NI1000 (EL) MM| Ni1000 (according to DIN EN 43 760, class B, TCR = 6180 ppm ⁄ K)
TF54 xx NI1000TK (EL) MM| Ni1000 TK5000  (TCR = 5000 ppm ⁄ K),  LG – Ni1000
TF54 xx LM234Z (EL) MM| LM235Z (TCR = 10 mV ⁄ K; 2.73 V at O °C),  KP10
TF54 xx NTC1,8K (EL) MM| NTC 1.8 K
TF54 xx NTC10K (EL) MM| NTC 10K
TF54 xx NTC20K (EL) MM| NTC 20K
Inserted Length:| (EL)MM = 50 mm, 100 mm, 150 mm, 200 mm, 250 mm, 300 mm, 400 mm

General notes

Measuring principle of HVAC temperature sensors in general:
The measuring principle of temperature sensors is based on an internal sensor that outputs a temperature-dependent resistance signal.
The type of the internal sensor determines the output signal. The following active ⁄ passive temperature sensors are distinguished:
a) Pt 100 measuring resistor (according to DIN EN 60 751)
b) Pt 1000 measuring resistor (according to DIN EN 60751)
c) Ni 1000 measuring resistor (according to DIN EN 43 760, TCR = 6180 ppm ⁄ K)
d) Ni 1000_TK 5000 measuring resistor (TCR = 5000 ppm ⁄ K)
e) LM235Z, semiconductor IC (10 mV ⁄ K, 2.73 V ⁄ °C). Ensure correct polarity

• ⁄– when connecting!
  f) NTC (according to DIN 44070)
  g) PTC
  h) KTY silicon temperature sensors
  The most important resistance characteristics are shown on the last page of these operating instructions. According to their characteristics, individual temperature sensors exhibit different slopes in the range between 0 °C and +100 °C (TK value). Maximum-possible measuring ranges also vary from sensor to sensor (for some examples to this see under technical data).
  Design of HVAC temperature sensors in general:
  Sensors are distinguished by shape type as follows: surface-contacting sensors, cable temperature sensors, and housing-type and built-in temperature sensors.

  • On surface-contacting sensors, the temperature sensor has at least one contact area that must be brought in contact, e.g. with the surface of radiators or pipes. If the contact area is not positioned correctly relative to the surface to be measured, significant temperature measurement errors may occur. Good contact area and temperature conduction must be ensured, dirt and unevenness must be avoided, and heat-conductive paste is to be used where necessary.
  • On cable temperature sensors, the temperature sensor is installed inside a sensor sleeve, from which a connecting cable is leading out. In addition to the standard insulating materials PVC, silicone, and fibreglass with stainless steel texture, other versions are also available that may allow a wider range of application.
  • On housing-type sensors, the temperature sensor is embedded in a respective housing. Different designs of housing are available, e.g. with an external sensor sleeve (see outside temperature sensor ATF2). Housing-type sensors are normally distinguished into in-wall (FSTF) and on-wall (RTF, ATF) types and indoor and wet room versions. Connection terminals are placed on a plate inside the connecting housing.
  • Duct and built-in temperature sensors are distinguished into temperature sensors with interchangeable measuring insert and without interchangeable measuring insert. Connection parts are placed inside a connecting head. Standard process connection for immersion sensors is a pipe thread (sizes in inches) and a mounting flange for duct sensors. However, it may be designed differently. When a built-in sensor has a neck tube, the application range is usually somewhat wider since ascending heat cannot flow directly and immediately into the connecting head. This is to be noted especially when transmitters are installed. The temperature sensor in built-in sensors is always placed inside the front part of the protective tube. On temperature sensors with short reaction times, protective tubes are stepped.

Note!
Select immersion depth for built-in sensors so that the error caused by heat dissipation stays within the admissible error margins. A standard value is: 10 x diameter of protection tube + sensor length. In connection with housing-type sensors, particularly with outdoor sensors, please consider the influence of thermal radiation. For that purpose, a sunshade and radiation protector SS-02 can be attached. If the sensor is used in refrigeration circuits, it must be insulated together with the housing to reduce the temperature potential between the device and the medium to a minimum and thus prevent condensation damage.

Maximum thermal load on components:
On principle, all temperature sensors shall be protected against unacceptable overheating!
Standard values for individual components and materials selected are shown for operation under neutral atmos phere and otherwise normal conditions (see table to the right).
For combinations of different insulating materials, the lowest temperature limit shall always apply.
Component ………………………………………………………………. max. thermal load
Connecting cable
PVC, normal ………………………………………………………………………………….+70 ° C
PVC, heat-stabilized ………………………………………………………………….. +105 °C
Silicone ……………………………………………………………………………………… +180 °C
PTFE ………………………………………………………………………………………….+200 °C
Fibreglass insulation with stainless steel texture ……………………+400 °C
Housing ⁄ Sensor
see table “Technical Data”

Resistance characteristics of passive temperature sensors (see last page)
In order to avoid damages ⁄ errors, preferably shielded cables are to be used.
Laying measuring cables parallel with current-carrying cables must in any case be avoided. EMC directives shall be observed!
These instruments must be installed by authorised specialists only!
Limiting deviation according to classes:
Tolerances at 0 °C:
Platinum sensors (Pt100, Pt1000):
DIN EN 60751, class B ……………………………………………………………… ± 0.3 K
1 ⁄ 3 DIN EN 60751, class B ………………………………………………………..± 0.1 K
Nickel sensors:
NI1000 DIN EN 43760, class B …………………………………………………….. ± 0.4 K
NI1000 1 ⁄ 2 DIN EN 43760, class B …………………………………………….. ± 0.2 K
NI1000 TK5000 ……………………………………………………………………….. ± 0.4 K
ATTENTION, NOTE ! Testing current influences the thermometer‘s measuring accuracy due to intrinsic heating and therefore, should never be greater than as specified below:
Sensor current, maximum …………………………………………………………………… I max
Pt1000 (thin-layer) …………………………………………………………………… < 0.6 mA
Pt100 (thin-layer) …………………………………………………………………… < 1.0 mA
Ni1000 (DIN), Ni1000 TK5000 ………………………………………………. < 0.3 mA
NTC xx ………………………………………………………………………………………… < 2 mW
LM235Z …………………………………………………………………………… 400 µ A … 5 mA
KTY 81 – 210 ………………………………………………………………………………….< 2 mA

Installation and Commissioning

Devices are to be connected under dead-voltage condition. Devices must only be connected to safety extra-low voltage. Consequential damages caused by a fault in this device are excluded from warranty or liability. These devices must be installed and commissioned by authorised specialists. The technical data and connecting conditions shown on the device labels and in the mounting and operating instructions delivered together with the device are exclusively valid. Deviations from the catalogue representation are not explicitly mentioned and are possible in terms of technical progress and continuous improvement of our pro ducts. In case of any modifications made by the user, all warranty claims are forfeited. Operating this device close to other devices that do not comply with EMC directives may influence functionality. This device must not be used for monitoring applications, which serve the purpose of protecting persons against hazards or injury, or as an EMERGENCY STOP switch for systems or machinery, or for any other similar safety-relevant purposes.
Dimensions of housing or housing accessories may show slight tolerances on the specifications provided in these instructions.
Modifications of these records are not permitted.
In case of a complaint, only complete devices returned in original packing will be accepted.
Our “General Terms and Conditions for Business“ together with the “General Conditions for the Supply of Products and Services of the Electrical and Electronics Industry“ (ZVEI conditions) including supplementary clause “Extended Retention of Title“ apply as the exclusive terms and conditions“.
Notes regarding mechanical mounting and attachment:
Mounting shall take place while observing all relevant regulations and standards applicable for the place of measurement (e.g. such as welding instructions, etc.). Particularly the following shall be regarded:

• VDE ⁄ VDI directive technical temperature measurements, measurement set – up for temperature measurements.
• The EMC directives must be adhered to.
• It is imperative to avoid parallel laying of current-carrying lines.
• We recommend to use shielded cables with the shielding being attached at one side to the DDC ⁄ PLC.
• If the sensor is used in refrigeration circuits, it must be insulated together with the housing to reduce the temperature potential between the device and the medium to a minimum and thus prevent condensation damage.

Before mounting, make sure that the existing thermometer‘s technical parameters comply with the actual conditions at the place of utilization, in particular in respect of:

• Measuring range
• Permissible maximum pressure, flow velocity
• Installation length, tube dimensions
• Oscillations, vibrations, shocks are to be avoided (< 0.5 g)

Attention! In any case, please observe the mechanical and thermal load limits of the protective tubes according to DIN 43763 or according to specific S+S standards!
Notes regarding process connection of built-in sensors:
If possible, select material of protective tube to match the material of piping or tank wall, in which the thermometer will be installed!
Maximum temperatures Tmax and maximum pressures pmax are as follows:
for TH – MS brass sleeves Tmax = +150 °C, pmax = 10 bar and for TH – VA stainless steel sleeves (standard) Tmax = +400 °C, pmax = 40 bar.
Screw-in threads:
Ensure appropriate support of the gasket or sealing material when mounting! Permissible tightening torque standard values for screw – in threads, are as follows:
M 18 x 1.5; M 20 x 1.5; pipe thread G ½ ” : 50 Nm
M 27 x 2.0; pipe thread G ¾ ” : 100 Nm
Flange mounting:
In case of flange mounting, screws in the flange part must be equally tightened. The lateral pressure screw must clamp securely, otherwise the feeler shaft might slip through.
Welding sleeves:
Specific welding instructions shall be observed.
On principle, unevenness or the like that might influence the system‘s ”CIP ability“ must not develop at welds.
For high-pressure lines, pressure test certifications and inspections are required.
Notes on commissioning:
This device was calibrated, adjusted and tested under standardised conditions.
When operating under deviating conditions, we recommend performing an initial manual adjustment on-site during commissioning and subsequently at regular intervals.
Commissioning is mandatory and may only be performed by qualified personnel!
Permissible approach velocities (flow rates) for crosswise approached protective tubes in water.
The approaching flow causes protective tube to vibrate. If specified approach velocity is exceeded even by a marginal amount, a negative impact on the protective tube’s service life may result (material fatigue). Discharge of gases and pressure surges must be avoided as they have a negative influence on the service life and may damage the protective tubes irreparably.
Please observe maximum permissible approach velocities
for stainless steel protective tubes 8 x 0.75 mm (1.4571) (see graph TH – VA ⁄ xx, TH – VA ⁄ xx ⁄ 90) as well as for brass protective tubes 8 x 0.75 mm (see graph TH – ms ⁄ xx) :

© Copyright by S+S Regeltechnik GmbH
Reprint in full or in parts requires permission from S+S Regeltechnik GmbH.
Subject to errors and technical changes. All statements and data herein represent our best knowledge at date of publication. They are only meant to inform about our products and their application potential, but do not imply any warranty as to certain product characteristics. Since the devices are used under a wide range of different conditions and loads beyond our control, their particular suitability must be verified by each customer and/or end user themselves. Existing property rights must be observed. We warrant the faultless quality of our products as stated in our General Terms and Conditions.

Resistance characteristics of passive temperature sensors

| Pt 100| Pt 1000| Ni 1000| Ni  1000
TK 5000| NTC
1.8 kOhm| NTC
10 kOhm| NTC
20 kOhm
---|---|---|---|---|---|---|---
° C| Ω| Ω| Ω| Ω| Ω| Ω| Ω
– 50| 80.3| 803| 743| 790.8| –| –| –
– 40| 84.3| 843| 791| 826.8| 39073| –| 806800
– 30| 88.2| 882| 842| 871.7| 22301| 175785| 413400
– 20| 92.2| 922| 893| 913.4| 13196| 96597| 220600
– 10| 96.1| 961| 946| 956.2| 8069| 55142| 122260
0| 100| 1000| 1000| 1000| 5085| 32590| 70140
10| 103.9| 1039| 1056| 1044.8| 3294| 19880| 41540
20| 107.8| 1078| 1112| 1090.7| 2189| 12491| 25340
30| 111.7| 1117| 1171| 1137.6| 1489| 8058| 15886
40| 115.5| 1155| 1230| 1185.7| 1034| 5329| 10212
50| 119.4| 1194| 1291| 1235| 733| 3605| 6718
60| 123.2| 1232| 1353| 1285.4| 529| 2489| 4518
70| 127.1| 1271| 1417| 1337.1| 389| 1753| 3098
80| 130.9| 1309| 1483| 1390.1| 290| 1256| 2166
90| 134.7| 1347| 1549| 1444.4| 220| 915| 1541
100| 138.5| 1385| 1618| 1500| 169| 678| 1114
110| 142.3| 1423| 1688| 1557| 131| 509| 818
120| 146.1| 1461| 1760| 1625.4| 103| 389| 609
130| 149.8| 1498| 1833| –| –| 300| 460
140| 153.6| 1536| 1909| –| –| 234| 351
150| 157.3| 1573| 1987| –| –| 185| 272

Pin assignment (M12)

S+S REGELTECHNIK GMBH
THURN-UND-TAXIS-STR. 22
90411 NÜRNBERG ⁄ GERMANY
FON +49 (0) 911 ⁄ 5 19 47-0
mail@SplusS.de
www.SplusS.de Rev. 2022 – V18

Documents / Resources

| S S REGELTECHNIK THERMASGARD TF54 Series Immersion or Screw-In or Duct Temperature Sensor with Passive Output [pdf] Instruction Manual
xx, THERMASGARD TF54 Series Immersion or Screw-In or Duct Temperature Sensor with Passive Output, THERMASGARD TF54 Series, Immersion or Screw-In or Duct Temperature Sensor with Passive Output
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References

• S+S Regeltechnik | Ihr sensorik Partner

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