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SITRANS TF2 7NG3140- ..... transmitter for temperature with digital display (all versions)
Qualified personnel
This device may only be commissioned and operated by qualified personnel. Qualified personnel as specified in the safety-relevant section of this
manual refers to people who are authorized to commission, ground and designate devices, systems and circuits according to the standards of safety
technology.
Authorized Use
Please note the following:
! Warning
Important safety warnings
!
WARNING
Protection from incorrect use of the measuring device:
It is of particular importance to ensure that the materials selected for those parts of the measuring device that come into contact with any media are
suitable for the process media used. The connections to the process must be sealed, tight and safe according to the standard rules of technology.
If the device needs to be de-installed or opened, it must be disconnected from power and depressurized. Non-compliance with this precaution may
cause danger to body, life and environment.
!
CAUTION
If surface temperatures exceed 70 °C, a touch guard should be used. This touch guard must be designed such that the maximum permissible ambient
temperature at the device is not exceeded.
!
CAUTION
The device may only be used within the pressure limits for the materials measured and the voltage limits indicated on the rating plate.
If the glass cover needs to be opened, it must be screwed on tightly again in order to ensure the mechanical degree of protection IP65.
ATTENTION
No external loads may be applied to the measuring transmitter.
NOTE
For reasons of clarity, these instructions do not include complete information about the product. Please also note that the content of these instructions
is not part of an earlier or existing agreement, promise or legal relationship, nor does it constitute a change in any of these. Any obligations of
Siemens AG are contained in the relevant purchase contract, which also includes the complete and solely valid warranty rules.
Operation
Function
Measured value
(1)
Password
2
Measuring unit
4
Start-of-scale value
5
'scaling'
End-of-scale value
6
'scaling'
Upper limit value
7
Overrange
Lower limit value
8
Underrrange
Offset
9
Upper limit of current
10
saturation
Lower limit of current
11
saturation
Electrical attenuation
12
The following applies to all modes: a newly set value will be saved only after the mode was changed or when the device independently returns to the 'measured value'
function approximately 2 minutes after the last keypad operation.
Electr. connection:
A two-conductor shielded and twisted cable (4.5 to 7 mm in diameter) is connected via the M16x1.5 cable gland. The earthing conductor is connected to the housing.
NOTE: Additional instructions for accurate installation and commissioning can be found in the A5E00263328 operating manual available from your
local sales representative or online under www.siemens.com/fielddevices.
Kurzbetriebsanleitung/Operating instructions in brief
This device may only be used for the applications specified in the catalog and in the technical description, and only in combination
with third party devices and components recommended by Siemens. Problem-free and safe operation of the product requires proper
transportation, storage, setup and installation as well as careful operation and maintenance.
Mode
Button functions
M
↑
Change measured
Change decimal
value display
place
Increase
Decrease
Change
Increase
Decrease
Increase
Decrease
Increase
Decrease
Increase
Decrease
Increase
Decrease
Increase
Decrease
Increase
Decrease
Increase
Decrease
Display explanations
↓
M
⇒ M2
Measured value in mA or % or in physical units
⇒ M4
Enter the number '99'
⇒ M5
Tech. temperature units °C, °F, °R or K
⇒ M6
Start of measuring range in the selected measuring unit.
(enter numbers between –50°C and 200°C)
Factory setting: 0°C
⇒ M7
End of measuring range in the selected measuring unit
(enter numbers between –50°C and 200°C)
Factory setting: 100°C
⇒ M8
↑ , overrange limit for set limit value
(enter numbers between –55°C and 210°C)
Factory setting: 100°C
⇒ M9
↓ , underrange limit for set limit value
(enter numbers between –55°C and 210°C)
Factory setting: 0°C
⇒ M10
Output value = value at input + offset
(enter numbers between –100°C and 100°C)
Factory setting: 0°C
⇒ M11
Max. value of current saturation 20,5 - 23 mA
Factory setting: 20.5 mA
⇒ M12
Min. value of current saturation 3.6 – 3,8 mA
Factory setting: 3.8 mA
⇒ M1
Time constant in s, setting range of 0.1 – 100 s
Factory setting: 0.2 s
A5E00267080-01
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