S+S Regeltechnik THERMASGARD ETF 6-KV Operating Instructions, Mounting & Installation page 8

G
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.
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) :
30
Maximum permissible approach velocities for
28
TH - ms ⁄ xx
26
24
22
20
18
16
14
12
10
8
6
4
2
0
50 75 100 125 150 175 200 225 250 275 300 325 350 375 400
P = 1 bar ⁄ T = 100 - 200 °C (steam)
P = 20 bar ⁄ T = 100 °C (water)
P = 20 bar ⁄ T = 200 °C (water)
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 protective tubes according to DIN 43763 respectively
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 T and maximum pressures p
max
TH - MS brass sleeves T = +150 °C, p
max
TH - VA stainless steel sleeves (standard) T
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 "
M 27 x 2.0; pipe thread G ¾ "
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!
40
Maximum permissible approach velocities for
35 TH - VA ⁄ xx, TH - VA ⁄ xx ⁄ 90
30
25
20
15
10
5
0
50 75 100 125 150 175 200 225 250 275 300 325 350 375 400
are as follows:
max
= 10 bar and for
max
= +400 °C, p = 40 bar.
max max
: 50 Nm
: 100 Nm
P = 1 bar ⁄ T = 100 - 200 °C (steam)
P = 20 bar ⁄ T = 100 °C (water)
P = 20 bar ⁄ T = 200 °C (water)