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Type:D541/7T、D541/7TK temperature switch

Illustrate:D541/7T、D541/7TK Temperature Switch Capillary type thermal element For.neutral gaseous and liquid fluids Working temperature range -30...+280℃

D541/7T、D541/7TK  Temperature Switch 
 

Capillary type thermal element                                
For.neutral gaseous and liquid fluids
Working temperature range -30...+280℃

Main Technical Data
  
  Environmentall Temperature:  -25-60℃                                             2    3
    Switching  Element:  micro-switch.
    Housing Protection Garde:  IP65
   (according with DIN40050, and corresponding to IP65 in GB4208)        
    Capillary:  4m                                                                    1
Terminals 1-3:Contacts ctose on rising temperature
    Materials (Sensor):  Cu
    Vibretion resistence: D541/7T:   40M/s
                     D541/7TS:  20M/s 
    Repeatability Error:  ≤3%
    Contact Capacity: AC220V  6A (resistivity).
    (As for special requirements, you may refer to the Application 
     Manual Written by this factory)
 
 
  □Characterisitic Data

Adjustable
  Range
 
 
[℃](°F)
Switching temperature difference Maximum
Allowable
Temperature
 
[℃] (°F)
Weight
 
 
 
[KG]
Dimensional
Drawing
NO.
Cat. NO.
Lower
Range
[℃] (°F)
Upper
Range
[℃] (°F)
Switching temperature difference not adjustable (D541/7T)
-30...+40(-22...104) 4
(7.2)
2
(3.6)
+ 70
(158)
0.95  
 
01
0891500
+10...+75
(50...167)
5
(9)
2.5
(4.5)
+ 95
(203)
0.95 0891700
+60...+165
(140...329)
12
(21.6)
4
(7.2)
+190
(383)
0.95 0891800
+160...+280
(+320...+536)
14
(35.2)
6
(12.8)
+320
(608)
0.95 0891900
Switching temperature difference adjustable  (D541/7T)
-30...+40(-22...104) 8...20
(14.4...36)
6.5...8
(11.7...14.4)
+ 70
(158)
1.00  
 
01
0890500
+10...+75
(50...167)
9...25
(16.2...44)
4...10
(7.2...18)
+ 95
(203)
1.00 0890700
+60...+165
(140...329)
18...30
(32.4...54)
6...10
(12.8...18)
+190
(383)
1.00 0890800
+160...+280
(+320...+536)
20...40
(36..72)
8...15
(14.4...27)
+320
(608)
1.00 0890900
Switching temperature difference not adjustable (D541/7TK)
-30...+40(-22...104) 2.5
(6.5)
1.5
(2.7)
+ 70
(158)
0.95  
 
01
0891507
+10...+75
(50...167)
3
(5.4)
2
(3.6)
+ 95
(203)
0.95 0891707
+60...+165
(140...329)
6
(12.8)
3
(5.4)
+190
(383)
0.95 0891807
+160...+280
(+320...+536)
7
(12.6)
4
(7.2)
+320
(608)
0.95 0891907

Dimensional drawing
01
 
 
 
 
Accessories
The selectable accessory catalogue numbers :  0574757.  0574758,
0574755,  0574772,  0574759,  0574760

Open protection sleeve R1/2
For sensor ,cartidge
Material brass Cat. NO. 0574757
Material st. St.1.4571
Cat.NO. 0574759
Closed protection sleeve R1/2
For sensor cartridge
Material brass Cat. NO. 0574758
Material st. St.1.4571
(with brass plug) Cat. NO. 0574760
Removable screw coupling R1/2,
Material brass,with seal
(without protection sleeve,
Up to max.6 bar)
Cat.ON. 0574755
7 T-support
(2 brackets, 4 screws)
Cat. NO, 0574772


 

Switch selection and mounting

instructions
The switching points should normally be in about
The middle of the adjustable range.
Observe switching temperature range, do not subject
Switch to max. Allowable temperature during normal
Operation.
Do not exceed electrical ratings.
Electrcal connection by a M18*1.5 cable gland, in
Accordance with local regulations For outdoor
Installation sufficient are: dractic changes in
Temperature, solar radiation, penetration of water.
Setting of the switching points
Use range spindle to set the upper or lower switching
Point on designs with fixed switching temperature
Difference, the opposite one is determined by the
Fixed switching temperature difference
On designs with adjustable switching temperature.
Difference, use range spindle to set the lower
Switching point, then use differential spindle to set
The upper switching point by adding the desired
Switching temperature difference
 
Turning the range spindle anticockwise shifts both
Switching points upwards, Turning the differential
Spindle anticlockwise shifts only the upper switching
Point upwards,i.e.the switching pressure difference
(distance between the upper and lower switching
Points) increases.
Example:
Desired: Lower switching point 40℃
       Upper switching point 55℃
       (Switching temperature difference=15K)
Setting: 40℃(with range spindle)
       15K(with differential spindle)
 
To set precise switching points a thermometer is
Reguired.(The temperatue switch is a switching andRegulating device and not a measuring instrument
- even if it has a scale to assist in the setting).
The setting can be changed at anytimen, even during
operation.
 
 
Making and or breaking capacity Change-over switch with silver sping contacts
Type 
of current
 
 Type of  load
Voltage[V]
24 60 110 220
Make and break current[A]
AC Resistive load
Inductive load
Cos≈0.7
Resistive load.
Inductive load.
L/R≈10ms
Inductive load
Spark quenching
With diode
 
15 15 15 15
AD 4 2.5 1.5 0.9
DC 2 0.9 0.45 0.2
DC 1 0.3 0.09 0.02
DC 1.5 0.7 0.35 0.15
 
Spark quenching (direct current):
Diode in parallel with inductance. Make sure polarity.
Is correct when making connections.
Dimensioning of quenching diode (rectifier):
Rated voltage of diode VD≥1.4XVterm.
Rated current of diode 1Rated≥1Load
In case of vigorous contact chatter, use a selenium
Rectifier if breaking inductance is >2H(rectifiers
Having a diffusion barrier layer may get distroyed by
The constant pole reversal).

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Office Address: Room 402, No. 650, Xinzhuan Rd., Jiuting Town, Songjiang District, Shanghai, China (Mainland)

Phone:021-57635022

E-mail:info@gnflowmeter.com

E-mail:sales@gninstruments.com

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