Showing 61–70 of 229 results

Siemens QFM31..D Duct sensors for rel. humidity / temperature for demanding requirements

Siemens QFM31..D Duct sensors for rel. humidity / temperature for demanding requirements

• • 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
• Function test
• Capacitive humidity measurement
• Range of use −40…+70 °C / 0…100 % r. h. with LCD display −25…+70 °C / 0…100 % r.h.

Siemens QFM41..Duct sensor for rel. humidity/temperature

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.

Siemens AQX2000 AC 230 V extension module

Siemens AQX2000 AC 230 V extension module

The QXA2000 condensation monitor is used to avoid damage due to condensa-tion on chilled ceilings and in HVAC plant.
It operates on AC/DC 24 V and has a potential free AC/DC 1…48 V changeover contact. Suited for use with extension module AQX2000 (AC 230 V) equipped with a potential free AC 12…250 V changeover contact.

Siemens QFM81.2 Duct hygrostat, setpoint setting range 15…95 % r.h.

Siemens QFM81.2 Duct hygrostat, setpoint setting range 15…95 % r.h.

On/off hygrostat with microswitch, with temperature-compensated humidity sensor for temperature-independent hu-midity measurements, with stabilized sensing strip (good linearity, very stable even at high humidity, in-sensitive to dust and contaminated air), for the control of humidification equipment, for the control of dehumidification equipment, for mounting in ventilating ducts or rooms