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SIEMENS, Modulating refrigerant valves with magnetic actuator‚ PS43, M3FB..LX..

SIEMENS
Modulating refrigerant valves with magnetic actuator‚ PS43
M3FB..LX..

Soldered connection‚ hermetically sealed

•Modulating control valve for hot-gas applications for capacity control of refrigeration units and heat recovery systems
•For organic safety refrigerants
•AC 24 V operating voltage or power signal DC 0…20 V Phs (phase cut)
•Selectable electrical interface ZM.. with DC 0…10 V, DC 4…20 mA or DC 0…20 V Phs positioning signal
•High resolution and control accuracy
•Short positioning time (< 1 s)
•Port AB  A closed when de-energized
•Robust and maintenance-free
•DN 15…32, kvs values 0.6…12 m3/h

 

SIEMENS,Modulating refrigerant valves with magnetic actuator, PS45 ,MVL661..-..

Modulating refrigerant valves with magnetic actuator, PS45
MVL661..-..
Hermetically sealed, for safety refrigerants
· One valve type for expansion, hot-gas and suction throttle applications
· Hermetically sealed towards outside
· Selectable standard interface DC 0/2…10 V or DC 0/4…20 mA
· High resolution and control accuracy
· Precise positioning control and position feedback signal
· Short positioning time (< 1 s)
· Closed when deenergized
· Robust and maintenance-free
· Six valve sizes with kvs values from 0.25 to 12 m³/h
Use
The MVL661..-.. refrigerant valve is designed for modulating control of refrigerant
circuits including chillers and heat pumps. It can be used in expansion, hot-gas and
suction throttle applications as well as with all commonly used safety refrigerants (R22,
R134a, R227ea, R404A, R407C, R410A, etc.) and R744 (CO2).

 

SIEMENS,Modulating control valves with magnetic actuator,PN 16 MVF461H..

Modulating control valves with magnetic actuator,PN 16
MVF461H..
for hot water, high temperature hot water and steam
• Short positioning time (<2 s), high resolution (1 : 1000)
• Selectable valve characteristic: Equal-percentage or linear
• High rangeability
• Selectable standard interface DC 0/2…10 V or DC 0/4…20 mA
• Phase-cut signal input for Staefa controllers
• Position control and position feedback signal
• Wear-free inductive stroke measurement
• Spring return facility: A → AB closed when deenergized
• Low friction, robust and maintenance-free

SIEMENS,Room sensors, QFA41… ,for relative humidity and temperature with calibration certificates

Room sensors
QFA41…
for relative humidity and temperature with calibration certificates
• Operating voltage AC 24 V / DC 13.5…35 V
• Signal output DC 0…10 V / 4…20 mA for relative humidity and temperature
• Very high measuring accuracy across the entire measuring range
• Capacitive humidity measurement
• Recalibration service
• Test function for loop test
• Range of use −40…+70 °C / 0…100 % r. h. with LCD display −25…+70 °C / 0…100 % r. h.
Use
The QFA41… sensor is used in ventilation and air conditioning plants requiring:
• Very high accuracy and reliability for measuring relative humidity and temperature
• Regular recalibration and readjustment of the sensors
Examples:
• Storage and production facilities in the paper, textiles, pharmaceutical, chemical, electronics industries, etc.
• Laboratories
• Hospitals
• Computer centers
• Greenhouses