Siemens Qpl25.050b Gas Burnerspressure Switches Thread 1/4inch 5-50mbar Ionization Metal Air Differential Pressure Switch

• Type: Electronic
• Number of Switch: Multi Control Switch
• Structure: Gas
• Usage: Control Switch
• Application: Industrial
• Explosion-proof Type: Non Explosion-proof
• Model NO.: QPL25.050B
• Contact: Normally Close
• Brand: Siemens
• Certification: CE
• Transport Package: Carton
• Specification: 9.5*7.5*5cm
• Trademark: Siemens
• Origin: Germany
• HS Code: 8413910000
• Production Capacity: 1000PCS/Month

Product Description

SIEMENS BURNERS QPL25.050B GAS PRESSURE SWITCH, SMALLER SIZE, ISO THREAD 1/4inch 5-50MBAR Pressure Switch

The pressure switches are used for monitoring gas or air pressures.
When the pressure falls below or exceeds the adjusted switching point, the re
spective electrical circuit will be opened or changes over.
The QPLx5... and this Data Sheet are intended for use by OEMs which integrate
the pressure switches in their products.

USE:

For the supervision of air or gas pressures in gas trains of gas-fired equipment (gas
burners)
QPLx5 are suitable as pressure switches for minimum or maximum pressure
Adjustable working pressure range up to 50 kPa
Able for a permanent operation pressure up to 69 kPa
Suited for gases of gas families 1, 2 and 3 and other neutral gaseous media

Mounting notes
Ensure that the relevant national safety regulations are complied with
By check piping connections ensure that there are no leaks
To prevent the pressure connection from being blocked on the plant, a suitable
preventive precaution must be used
Example: Installation of a fine mesh or filter
The pressure switch can be mounted either horizontally or vertically, but not in a
suspended position (scale must not pointing downward)
The pressure switch can be connected via a ¼" thread or O-ring, depending on the
type of switch
The test point on QPL... can be opened with a 2,5 mm allen key
Refer also to following Mounting Instructions: 74 319 0551 0 (M7221)

SIEMENS BURNERS QPL25.050B GAS PRESSURE SWITCH, SMALLER SIZE, ISO THREAD 1/4inch 5-50MBAR Pressure Switch

Technical data
Switching voltage
AC effective max. 280 V
DC 24...48 V
Switching current
ACeff max. 6 A at cos 1
AC eff. max. 2 A at cos 0.6
AC eff. min. 20 mA (on request)
DC max. 1 A
DC min. 20 mA

Typical hysteresis:
Pressure range
in (kPa)
Switching differ
ential
in (kPa)
0,07…0,3
0,07
0,2…1
0,1
0,5…5
0,25
0,5…15
0,5
10…50
2

Adjustable operating pressure range 50 kPa (different ranges, refer to «Type
summary»)
Operating pressure (continuously) Max. 69 kPa
Weight
- QPL...
- AGA65
Approx. 120 g
Approx. 36 g
Mounting position horizontal or vertical, but not suspended
Safety class II to VDE 0631
Degree of protection IP54
Switching pressure deviation ±15 %, referred to the setpoint (scale)
(diaphragm in vertical position)
Gas families I, II, III

SIEMENS BURNERS QPL25.050B GAS PRESSURE SWITCH, SMALLER SIZE, ISO THREAD 1/4inch 5-50MBAR Pressure Switch

Specification

item	value
Warranty	1.5 years
Customized support	OEM
Place of Origin	Germany
Brand Name	Siemens
Model Number	QPL25.050B
Type	Gas Burner
Feature	High Performance
Power Source	Electric
Application	Industrial Gas Burner
Product Name	Siemens QPL25.050B OR Differential High Pressure Control Switch
Model	QPL25.050B
Brand	Siemens
Power Supply	250v 10A
Max. operating pressure	500 mbar (50 kPa)
Ambient temperature	-15 °C to +70 °C
Degree of protection	IP 54
Diaphragms	NBR
Usage	Industrial Gas Burner Accessories
After Warranty Service	Video technical support

 

 

 

SIEMENS BURNERS QPL25.050B GAS PRESSURE SWITCH, SMALLER SIZE, ISO THREAD 1/4inch 5-50MBAR Pressure Switch