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
สั่งซื้อสินค้า
สินค้าที่เกี่ยวข้อง
Siemens VPP46..Combi valves (PICV) PN25, externally threaded
systems
With integrated differential pressure controller
DN 10…DN32: Valve body made of dezincification resistant hot-pressed
brass (DZR)
DN 40…DN 50: Housing made of spheroidal graphite iron
Volumetric flow 30… 11500 l/h,
Differential pressure range 15…600 kPa
Internally threaded Rp conforming to ISO 7-1
Externally threaded G conforming to ISO 228-1
Version with pressure test points for Δp measurement (optional)
Can be equipped with electro thermal or electromotive actuators
SSA.. (3-position or DC 0…10 V)
STA..3../STP..3.. (2-position or PDM)
STA63../STP63.. (DC 0…10 V)
SAY..1P03 (3-position or DC 0…10 V)
Siemens VPE..MiniCombiValves (MCV)
Radiator valves featuring integrated differential pressure control for
2-pipe heating systems, fan coils and chilled ceiling systems
? Automatic flow limitation under all operating conditions
? Straightforward design of plant with no need for safety margins
? Thanks to MCV no hydraulic balancing within the zone required
? No additional line balancing valves required
? No noise problems
? Integrated presetting of kv-values
? DIN DN 10 and DN 15
? Valve bodies made of brass, mat nickel-plated
? Internally and externally threaded (Rp/R) conforming to ISO 7-1
? Can be combined with RTN.. thermostatic, STA..3.. electrothermal and SSA..
electromotoric actuators
Siemens MXG461B.. Modulating control valves with magnetic actuators, PN 16
Short positioning time (< 2 s), high resolution (1 : 1000)
? Selectable valve characteristic: equal-percentage or linear
? High rangeability
? Operating voltage AC / DC 24 V
? Selectable standard signal inputs DC 0/2…10 V or DC 0/4…20 mA
? DC 0…20 V Phs phase-cut signal input for Staefa controllers
? Indication of operating state, visible from the outside
? Accurate position feedback signal by inductive stroke measurement
? Spring return facility: A ? AB closed when deenergized
? Low friction, robust and maintenance-free
? Including fittings
Siemens QFM41.. Duct sensors for rel. humidity / temperature for demanding requirements, with calibration certificate
• 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 throughout the entire measuring range
• Capacitive humidity measurement
• Recalibration service
• Test function for loop test
• Range of use −40…+70 °C / 0…100 % r. h.
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
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).