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Home/Sensors/ventilation/SCHMIDT® Flow Sensor HVAC 100

SCHMIDT® Flow Sensor HVAC 100

  • Cylindrical sensor head (largely independent from flow direction, easy to clean)
  • Flow and temperature signal
  • Probe length 144 mm (optional extendable)
  • Measuring ranges 0 … 2.5 m/s to 0 … 20 m/s

 

At many applications like ventilation, exhaust and air-conditioning systems, it is necessary to measure flow velocity, mass flow as well as the temperature of the medium to ensure an energy efficient operation of the unit.

 

The measuring ranges of this sensor have been tailored for the HVAC industry but also for other applications.

 

Easy-to-install: The HVAC 100 with its 360° measuring head does not have to be aligned to the flow direction and can be extended by additional tubes (variable immersion depth). Furthermore this sensor is maintenance-free, robust, long-term stable and easy-to-clean and therefore fulfills the main requirements for an efficient installation process.

 

The operating status display via LED enables safe operation at a glance and due to the fully integrated evaluation electronics in the sensor tube there are no further transmitters required.

 

  • Ventilation, exhaust and air-conditioning systems
  • Control of supply air and exhaust air in fume chambers
  • Filter monitoring
  • Supply and exhaust air control in digestories

 

SCHMIDT Technology – Simply a question of better measurement

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Specifications

General data
HumidityMeasuring mode: Non-condensing (< 95 % RH)
Operating pressure (max.)Atmospheric (700 … 1,300 hPa)
Supply voltage24 V DC ± 20 %
Current consumptionTyp. < 35 mA (max. 80 mA)
Analog outputs for wN and TM2 x 0 … 10 V (RL ≥ 10 kΩ; CL ≤ 1 nF)
Electrical connectionNon-detachable cable, pigtail, 4 x 0,25 mm2, length 2 m, PVC
Maximum cable length15 m
Type of protectionIP40
Protection classIII (SELV)
Minimum immersion depth35 mm
Dimensionsø 12 mm, probe length 144 mm, extension tube 97 mm (extending length 85 mm)
Weight50 g (probe)
Delivery contentProbe, mounting clamp, 1 pc. extension tube, manual
Technical data
Measuring quantityStandard flow velocity wN based on standard conditions 1)
Medium temperature TM
Measured mediumClean air or nitrogen
Measuring range wN0 ... 2.5 / 10 / 20 m/s
Lower detection limit wN0.2 m/s
Measuring range TM0 … +60 °C
Measuring accuracy
Flow wN0 ... 2.5 m/s: ±(4 % of measured value + 0.05 m/s)2)
0 ... 10 m/s: ±(4 % of measured value + 0.2 m/s)2)
0 ... 20 m/s: ±(4 % of measured value + 0.4 m/s)2)
Response time (t90) wNApprox. 10 s (jump of wN from 0 to 5 m/s)
Temperature gradient wN< 1,5 K/min at 5 m/s
Temperature TM
(wN > 2 m/s)		±1 K (10 … 30 °C); ±2 K (remaining interval)
Operating temperature
Sensor-10 … +60 °C
Material
SensorPC, ABS, Brass nickel plated, PVC (cable sheath)
Extension tubeABS
Mounting clampPA-GF

1) Standard conditions: TN = 20 °C and pN = 1,013.25 hPa

2) Related to adjustment reference; "fmr" = final measuring range

Subject to technical changes.

Order information

DescriptionArticle-Number
HVAC 100 – 2.5 m/s548 000-13
HVAC 100 – 10 m/s548 000-11
HVAC 100 – 20 m/s548 000-12
Extension Tube (set of 5 pcs.)551 300

Accessories

Mounting and fixing technology

DescriptionArticle-Number
Extension tubes (5 pcs. per pack)551 300

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