Dosch Messapparate GmbH
EARL control switches
These control switches work under mechanical principles and had been build by company LAASER GmbH under the trade name EARL.
The design is proved for long-term usage under industrial conditions.
The control signal comes from one or two SPDT contacts as micro- switch, reed contact or proximity switch.
In standard the instruments are made from stainless steel, but for rough enviroment as off-shore or mining application also other material can be used.
Dosch Messapparate Flow Elements
Thanks to our wide product range, Dosch Messapparate offers the most suitable component according to your individual requirements, as the general product group, to control the flow with our flow switches or flow rate differential elements.
Dosch Messapparate DP Flow Elements
Differential pressure flow measurement represents the only globally standardized procedure that can calculate the uncertainty of measurement.
With this measurement standard proven by DP flow elements, you can have the perfect measurement solution in your hand
- Orifice Plates
- Orifice Plates with Taps
- Meter Runs
- Nozzles
- Venturi Tubes
- Restriction Orifices
- Cone Meters
- Wedge Meters
- Averaging Pitot Tubes
Dosch Messapparate DP Flow Elements
Dosch Messapparate Orifice Plates BLS 100
Dosch Messapparate Orifice Plates with Pressure Taps Single Bore BLB 300
Dosch Messapparate Ring Chamber Orifice Plates BLA 200
Dosch Messapparate Weld-In Orifice Plates EBLB-EBLA 800
Dosch Messapparate Meter Runs MBL 500
Dosch Messapparate Nozzle ISA 1932 DU 600
Dosch Messapparate Long Radius Nozzle DU 600 LR
Dosch Messapparate Venturi Nozzle DV 700
Dosch Messapparate Weld-In Nozzle ISA 1932 EDUB-EDUA 800
Dosch Messapparate Weld-In Long Radius Nozzle EDUB 800 LR
Dosch Messapparate Weld-In Venturi Nozzle EDV 800
Dosch Messapparate Venturi Tubes H 800
Dosch Messapparate Restriction Orifice BLS 100 R
Dosch Messapparate Cone Meters
Dosch Messapparate Wedge Meters
Dosch Messapparate Condense Vessels
Dosch Messapparate Manifolds
Dosch Messapparate EARL Flow Switches
The EARL flow switches are used as control instruments to observe and control the flow of liquids and gases. Because of their rigid mechanical design they are perfectly suitable for permanent monitoring of pipe flow.
Dosch Messapparate EARL Flow Switches Type 107
Dosch Messapparate EARL Flow Switches Type 31d
Dosch Messapparate EARL Flow Switches Type 32d
Dosch Messapparate EARL Flow Switch Type 167
Dosch Messapparate EARL Flow Switches Type 172
Dosch Messapparate EARL Flow Switches Type 173
Dosch Messapparate EARL Flow Switches Type 700
Dosch Messapparate EARL Flow Switches Type 720
Dosch Messapparate EARL Flow Switches Type 776
Dosch Messapparate EARL Flow Switches Type 778
Dosch Messapparate EARL Flow Switches Type 41vs
Dosch Messapparate Overview of EARL Flow Switches
|
Type
|
41vS
|
31d-32d
|
107
|
172-173
|
700-720
|
776-778
|
|
flow larger than 0,6 l/h
|
X
|
X
|
|
|
|
|
|
flow vel. < 0,3 m/s
|
|
X
|
X
|
|
X
|
X
|
|
flow vel. > 0,3 m/s
|
|
X
|
X
|
X
|
X
|
X
|
|
pressure up to 1000 bar, temp. up to 500°C
|
|
X
|
X
|
|
|
|
|
dirty medium
|
|
|
X
|
X
|
X
|
X
|
|
DN > 250 mm
|
|
|
X
|
X
|
X
|
|
|
for gases
|
X
|
|
|
X
|
|
|
|
corrosive media
|
X
|
|
X
|
X
|
X
|
X
|
|
ATEX EEX de / ia
|
|
X
|
X
|
X
|
|
|
|
certified
|
|
|
X |
Dosch Messapparate Pressure and Level
Reliable control switches for your process pressure and level EARL products are available for a wide range of process conditions.
Dosch Messapparate EARL Pressure Switches
These mechanical pressure switches are designed for long-term use.
Dosch Messapparate EARL Pressure Switches Type 188
Dosch Messapparate EARL Differential pressure: EARL Type 241
Dosch Messapparate EARL Negative pressure: EARL Type 244
Dosch Messapparate EARL Positive pressure: EARL Type 246
Application
The following table displays an overview of the characteristics of our pressure switches:
|
Type
|
Type 188
|
Type 241
|
Type 244
|
Type 246
|
|
Differential Pressure
|
|
X
|
|
|
|
Positive Pressure
|
X
|
|
|
X
|
|
Negative Pressure
|
|
|
X
|
|
|
0,01-15 MPa
|
X
|
|
|
|
|
10Pa-0,25 MPa
|
|
X
|
X
|
X
|
|
Temperature up to 200°C
|
X
|
X
|
X
|
X
|
|
Eex d
|
X
|
X
|
X
|
X
|
|
PTFE version
|
|
X
|
|
|
Dosch Messapparate EARL Level Switches
The mechanical level switches of series EARL type 8x are designed for long lifetime especially in rough industrial enviroment. They are available for several hazardous classes and for high media temperature.
Advantages
Our level switches combine several advantages:
-
Usable with dirty media
-
Operating pressure up to 320 bar (except Type 82)
-
Operating temperature up to 500 °C (except Type 82)
-
EEX d or EEx i (except Type 82)
-
Polymer version possible
-
boundary level control possible
EARL Level Switches Type 89
EARL Level Switches Type 86
EARL Level Switches Type 82
Dosch Messapparate Ürünleri ile uygun rekabetçi fiyaları almak için müşteri temsilçimiz ile http://www.imajteknik.com.tr/bize-ulasin veya Fiyat teklifi formunu doldurarak mesaj bırakmanız halinde satış muhendislerimiz en kısa zamanda sizinle irtibat kuracaklardır