Kobold LTS-A User manual

Operating Instructions
for
Resistive Temperature Sensor
Model: LTS

LTS
page 2 LTS K05/0422
1. Contents
1.Contents ........................................................................................................ 2
2.Note .............................................................................................................. 3
3.Instrument Inspection .................................................................................... 3
4.Regulation Use ............................................................................................. 3
5.Operating Principle ........................................................................................ 4
5.1Special ................................................................................................. 4
6.Mechanical Connection ................................................................................. 5
7.Electrical Connection .................................................................................... 6
7.1Pt 100 without transmitter .................................................................... 6
7.2Pt 100 with transmitter ......................................................................... 8
8.Technical Information .................................................................................... 9
8.1Mechanical Information ........................................................................ 9
8.2Electrical Information ........................................................................... 9
8.3Transmitter for LTS-A (with connection box) ...................................... 10
9.Order Codes ............................................................................................... 11
10.Dimensions ................................................................................................. 12
11.Accessories ................................................................................................. 15
12.EU Declaration of Conformance ................................................................. 17
13.UK Declaration of Conformity ...................................................................... 18
Manufactured and sold by:
Kobold Messring GmbH
Nordring 22-24
D-65719 Hofheim
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.kobold.com

LTS
LTS K05/0422 page 3
2. Note
Please read these operating instructions before unpacking and putting the unit
into operation. Follow the instructions precisely as described herein.
The instruction manuals on our website www.kobold.com are always for currently
manufactured version of our products. Due to technical changes, the instruction
manuals available online may not always correspond to the product version you
have purchased. If you need an instruction manual that corresponds to the
purchased product version, you can request it from us free of charge by email
([email protected]) in PDF format, specifying the relevant invoice number and
serial number. If you wish, the operating instructions can also be sent to you by
post in paper form against an applicable postage fee.
The devices are only to be used, maintained and serviced by persons familiar
with these operating instructions and in accordance with local regulations
applying to Health & Safety and prevention of accidents.
When used in machines, the measuring unit should be used only when the
machines fulfil the EC-machine guidelines.
3. Instrument Inspection
Instruments are inspected before shipping and sent out in perfect condition.
Should damage to a device be visible, we recommend a thorough inspection of
the delivery packaging. In case of damage, please inform your parcel service /
forwarding agent immediately, since they are responsible for damages during
transit.
Scope of delivery:
The standard delivery includes:
 Resistive Temperature Sensor model: LTS
4. Regulation Use
Any use of the Resistive Temperature Sensor, model: LTS, which exceeds the
manufacturer’s specification, may invalidate its warranty. Therefore, any resulting
damage is not the responsibility of the manufacturer. The user assumes all risk
for such usage.

LTS
page 4 LTS K05/0422
5. Operating Principle
The change in resistance of platinum in relation to the temperature to be
measured is used for temperature measurement with the KOBOLD Resistive
Temperature Sensors LTS.
The devices are connected electrically with 2- or 3-wire technology, depending on
the input of the evaluation device and the line length. Alternatively, the
temperature sensor can be connected to a 4-20 mA current input (2-wire current
loop) through the built-in 2-wire transmitter. The temperature sensors with a
connection that is cavity free (...T, ...M) are fitted with a food-compatible metallic
sealing system, that forms a hygienic measuring point in conjunction with the
associated weld-in sleeve LZE (confirmed by the EHEDG).
Sensor Tips and Response Times
All temperature sensors are available with tapered tips to ensure faster response
times. The times specified below refer to a resistive temperature sensor
immersed in boiling water.
5.1 Special
The temperature sensors with neck well are suited for measuring permanently
high temperatures (up to 250 °C).
Appropriate neck tube versions should be used at process temperatures above
70 °C if the transmitter is integrated, and above 100 °C in case of a separated
transmitter.

LTS
LTS K05/0422 page 5
6. Mechanical Connection
The LTS temperature sensors are available with a non-hygienic G ½ process
connector (R4) or alternatively with hygienic connections for food processing.
Only with these process connection options M12x1.5 (M3) and G ½ (G4),
combined with our hygienic LZE fittings, an EHEDG-certified dead space free
monitoring point based on hygienic design principles is possible.
(See chapter 11. Accessories)
Proper torque values for these two options are:
M12x1.5 = 10 - 15 Nm
G ½ = 15 - 20 Nm

LTS
page 6 LTS K05/0422
7. Electrical Connection
7.1 Pt 100 without transmitter
7.1.1 Plug connection at compact version
(LTS-K…M0 and LTS-A…M0)
1 x Pt 100 2-wire 2 x Pt 100 2-wire
1 x Pt 100 3-wire

LTS
LTS K05/0422 page 7
Terminal connections at version connection box (LTS-A…K0)
cable connection M16x1,5
1 x Pt 100 2-wire 2 x Pt 100 2-wire
1 x Pt 100 3-wire

LTS
page 8 LTS K05/0422
7.2 Pt 100 with transmitter
The transmitter converts the resistance of the PT100 into a temperature-
proportional 4-20mA standard current signal.
Thus, the current loop carries both the supply current and the measurement
signals.
The module is integrated into the head of the temperature sensor.
 Make sure the electrical power supply cables are de-energized.
 Connect the transmitter as shown in the connection schemes below.
 We recommend a minimum power supply cable cross section of 0.25 mm².
Warning! Wrong electrical connections may lead to the destruction
of the electronic circuit!
Plug connection at compact version (LTS-K…6Mx)
Terminal connections at version connection box (LTS-A…6Kx)
connection plug M16x1,5

LTS
LTS K05/0422 page 9
8. Technical Information
8.1 Mechanical Information
Max. pressure: 10 bar
Material: stainless steel 1.4404
Process connection: M 12 x 1.5 hygienic (with sleeve LZE),
G 1/2 hygienic (with sleeve LZE),
G 1/2 AG DIN 3852-2 without screw thread
(for clamp screwing LZE-M1, LZE-S1)
Sensor length: 20, 50, 100, 150, 250 mm,
special length up to max. 1000 mm
Electrical connection
Compact device: LTS-K: M 12 x 1-plug
Connection box: LTS-A: cable connection M 16 x 1.5
optional: M 12 x 1-plug
Max. current: 1 mA
Protection: IP 67
Weight: LTS-K: 0.3 - 2 kg
LTS-A: 0.5 - 2 kg
8.2 Electrical Information
8.2.1 Measuring sensor
Measuring principle: Pt 100, Class A acc. DIN IEC 751
Sensors: 1 or 2 Pt 100 per device (2-wire)
Measuring range: without transmitter:
-50…+250 °C (from 70 °C use only with
neckwell!)
Ambient temperature: -20…+80 °C
Tolerances Class A: 0 °C: ±0.15 K, 100 °C: ±0.35 K

LTS
page 10 LTS K05/0422
8.2.2 Transmitter for LTS-K (compact version)
Standard meas. range: -10…+40 °C
0…50 °C
0…100 °C
0…150 °C
0…200 °C
(from 70 °C only with neck well!)
Special meas. range: within -50…+250 °C
min. measuring range: 50 °C
Accuracy of electronics: ±0.2 % of reading ±0.2 °C
Accuracy of sensor: DIN Class B
Output: 4-20 mA corresponds to meas. range (2-wire)
Power supply: 10…30 VDC
Allowable load: RA≤(UV-10 V) / 0.022 A
Ambient temperature: -25…+70 °C
Humidity: 0…98 % r.H. (non-condensing)
Electrical connection: M12x1 plug
8.3 Transmitter for LTS-A (with connection box)
Input: 3-wire, Pt 100
Standard meas. range: -10…+40 °C
0…50 °C
0…100 °C
0…150 °C
0…200 °C
(from 70 °C only with neck well!)
Special meas. range: within -50…+250 °C
min. measuring range: 10 °C
Typical accuracy: ±0.15 % of measuring range
Output: 4…20 mA, temperature linear
Function: sensor breakage detection
Power supply: 8…32 VDC
Ambient temperature: -40…+85 °C
Galvanic isolation: no
Electrical connection: screw terminal

LTS
LTS K05/0422 page 11
9. Order Codes
Example: LTS- K 0 3 02 M3 1 K 0)
Model Version Screw thread Sensor tip Sensor length Process connection
LTS- K = compact
A = connection box
0 = without
neck well
H = with
neck well
3 = Ø 3.5 mm
(not for 2
sensors)
02 = 20 mm M3 = M 12 x 1.5 hygienic
3 = Ø 3.5 mm
(not for 2
sensors)
6 = Ø 6 mm
05 = 50 mm
10 = 100 mm
15 = 150 mm
25 = 250 mm
YY = special length
max. 1000 mm
M3 = M 12 x 1.5 hygienic
G4 = G ½, hygienic
R4 = G ½, standard
(for threaded jacket)
K0 = without screw thread
Continued
Sensor Electrical Connection Transmitter
1 = 1 Pt 100, class A, 2-wire
(not for compact version K)
2 = 2 Pt 100, class A, 2-wire
3 = 1 Pt 100, class A, 3-wire
K = cable connection M16x1.5
(not for compact version)
M = M12-plug
0 = without transmitter
6 = with transmitter
A = -10...+40 °C
B = 0...50 °C
C = 0...100 °C
D = 0...150 °C
E = 0...200 °C
S = specialr

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page 12 LTS K05/0422
10. Dimensions
LTS-K (compact version), without transmitter
Process connection (without neck well):
M12x1.5, hygienic
AF17
G ½ hygienic
A
F22
G ½, standard
A
F27 Without screw thread
LTS-K0xxxM3xM0 LTS-K0xxxG4xM0 LTS-K0xxxR4xM0 LTS-K0xxxK0xM0
Process connection (with neck well):
M12x1.5, hygienic
AF17
G ½, hygienic
A
F22
G ½, standard
A
F27
LTS-KHxxxM3xM0 LTS-KHxxxG4xM0 LTS-KHxxxR4xM0

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LTS K05/0422 page 13
LTS-K (compact version), with transmitter
Process connection (without neck well):
M12x1.5, hygienic
AF17
G ½ hygienic
A
F22
G ½, standard
A
F27 without screw thread
LTS-K0xxxM3xMx LTS-K0xxxG4xMx LTS-K0xxxR4xMx LTS-K0xxxK0xMx
Process connection (with neck well):
M12x1,5, hygienic
AF17
G ½, hygienic
AF22
G ½, standard
AF27
LTS-KHxxxM3xMx LTS-KHxxxG4xMx LTS-KHxxxR4xMx

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page 14 LTS K05/0422
LTS-A (with connection box)
Process connection (without neck well):
M12x1.5, hygienic
(AF22)
G ½ hygienic
(
A
F22)
G ½, standard
(
A
F27)
without screw thread
(
A
F22)
LTS-A0xxxM3xxx LTS-A0xxxG4xxx LTS-A0xxxR4xxx LTS-A0xxxK0xxx
Process connection (with neck well):
M 12 x 1.5, hygienic
(AF22 /AF17)
G ½, hygienic
(
A
F22 /
A
F22)
G ½, standard
(
A
F22 /
A
F27)
LTS-AHxxxM3xxx LTS-AHxxxG4xxx LTS-AHxxxR4xxx

LTS
LTS K05/0422 page 15
11. Accessories
If you need a hygienic installation, use the sleeve system LZE (see data sheet in
"Food processing catalogue" L1). The position of the Pg-conduit thread of the
screwed-in device is marked on the sleeve.
Example: Installation of a temperature sensor with sleeve LZE

LTS
page 16 LTS K05/0422
Hygienic Installation Systems LZE for temperature sensor LTS
Mounting sleeves, EHEDG-certified
Description
Measuring unit connection
M12x1.5 G ½
c
y
linder sleeve LZE-Z2
c
y
linder sleeve with test hole LZE-T2
c
y
linder sleeve low form LZE-N2
c
y
linder sleeve with collar LZE-P1 LZE-P2
collar sleeve LZE-K1 LZE-K2
ball sleeve LZE-U1 LZE-U2
collar compression fittin
g
LZE-M1
ball compression fittin
g
LZE-S1
adapter:
conical connection DIN 11851 LZE-L1 LZE-L2
aseptic lap-
j
oint flan
g
e DIN 11864 LZE-
A
1 LZE-
A
2
VARIVENT
®
LZE-
V
1 LZE-
V
2
Tri-Clamp
®
LZE-C1 LZE-C2
G 1 adapter LZE-D2
capped stub* LZE-B1 LZE-B2
Starting torque (Nm) 10-15 15-20
* all sleeves must be equipped a capped stub to prevent warping during welding
Weld-in Fittings, EHEDG certified
Description Model Measuring unit connection Pipe nominal width
Weld-in fittings LZE-R
1 = M12x1.5
2 = G ½
15 =DN 15 (only with M12x1.5)
25 =DN 25
40 =DN 40
50 =DN 50
65 =DN 65
80 =DN 80
For example LTS-…G4..
Typ: LZE-Z2 (G ½)

LTS
LTS K05/0422 page 17
12. EU Declaration of Conformance
We, KOBOLD Messring GmbH, Hofheim-Ts, Germany, declare under our sole
responsibility that the product:
Resistive Temperature Sensor Model: LTS
to which this declaration relates is in conformity with the standards noted below:
EN IEC 63000:2018 Technical documentation for the assessment of electrical
and electronic products with respect to the restriction of hazardous substances
Additional for model LTS-A******6K*
EN 61326-1:2013
Electrical equipment for measurement, control and laboratory use - EMC
requirements - Part 1: General requirements
Additional for model LTS-K******6M*
EN 61326-1:2013
Electrical equipment for measurement, control and laboratory use - EMC
requirements - Part 1: General requirements
(Appendix A, Class B) additional error < 1 % FS
When using long wires, suitable external measures against transient voltages
must be taken.
Also, the following EEC guidelines are fulfilled:
2014/30/EU EMC Directive
2011/65/EU RoHS (category 9)
2015/863/EU Delegated Directive (RoHS III)
Hofheim, 14 Dec. 2021
H. Volz M. Wenzel
General Manager Proxy Holder

LTS
page 18 LTS K05/0422
13. UK Declaration of Conformity
We, KOBOLD Messring GmbH, Hofheim-Ts, Germany, declare under our sole
responsibility that the product:
Resistive Temperature Sensor Model: LTS
to which this declaration relates is in conformity with the standards noted below:
BS EN IEC 63000:2018
Technical documentation for the assessment of electrical and electronic products
with respect to the restriction of hazardous substances.
Additional for model LTS-A******6K*
BS EN 61326-1:2013
Electrical equipment for measurement, control and laboratory use. EMC
requirements. General requirements
Additional for model LTS-K******6M*
BS EN 61326-1:2013
Electrical equipment for measurement, control and laboratory use. EMC
requirements. General requirements
(Appendix A, Class B) additional error < 1 % FS
When using long wires, suitable external measures against transient voltages
must be taken.
Also, the following UK guidelines are fulfilled:
S.I. 2016/1091 Electromagnetic Compatibility Regulations 2016
S.I. 2012/3032 The Restriction of the Use of Certain Hazardous
Substances in Electrical and Electronic Equipment
Regulations 2012
Hofheim, 14 Dec. 2021
H. Volz M. Wenzel
General Manager Proxy Holder