AF1 – FLOW MEASUREMENT TRANSMITTER

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OVERVIEW

Air velocity measurement made easy.

The AF1 series is a cost-effective, high-precision and stable transmitter for measuring air velocity and temperature. The devices have a calorimetric sensor and outstanding long-term stability. The measuring range and the output signals can be configured easily with a Software or using the integrated DIP- switches.

Features

  • High degree of stability and repeatability
  • Compact design
  • The outputs and measuring ranges can be configured using DIP switches
  • Simple mechanical installation
  • Outstanding price/performance ratio
  • Ideal for HVAC applications
  • Modbus RTU via RS485

TECHNICAL DATA

DEVICE TYPE Transmitter / air flow rate
PARAMETERS – Air velocity
– Temperature
RANGE OF APPLICATION 0…50 °C (housing)
0…80 °C (medium)
ACCURACY ±3.0 % full-scale
with 23 °C ±3 K, 45 %RH, 1013 mbar
INFLUENCE OF INSTALLATION POSITION <3 % of measurement with <10°
MEASUREMENT PRINCIPLE Calorimetric
MEASUREMENT RANGES 2 m/s; 5 m/s; 10 m/s; 15 m/s; 20 m/s
PRESSURE RESISTANCE 10 bar
JUMP RESPONSE τ90 after 3 s
MEDIUM Air and non-aggressive gases
POWER SUPPLY / POWER CONSUMPTION 8…35 VDC or 12…30 VAC 50/60 Hz
<200 mA
ELECTRICAL CONNECTIONS Screw terminals
CABLE GLAND M12 x 1.5 (Ø cable 3…6.5 mm)
MEASUREMENT INTERVAL 1 s
CIRCUIT TYPE 3-wire
ANALOG OUTPUTS 1
ANALOG OUTPUT SIGNAL (STANDARD) 4…20 mA or 0…10 V
PERMISSIBLE LOAD >10 kΩ (voltage output)
<500 Ω (current output)
COMMUNICATION INTERFACES RS-485
HOUSING Polycarbonate
IP PROTECTION RATING IP65
MOUNTING Sensor at 90° angle to flow
CONFIGURATION Via integrated DIP switch
CE / EMC CONFORM EMC Directive 2004/108/EC
STORAGE AND TRANSPORT CONDITIONS -20…60 °C
DIMENSIONS 105 x 70 x 32 mm
WEIGHT Duct version: 165 g
Cable version: 260 g

DOWNLOADS

AF1 – CE Declaration (59.27 KB)10/27/2016

AF1 – Datasheet (285.69 KB)12/27/2016

AF1 – Modbus Manual (1.26 MB)1/24/2017

AF1 – Short instruction manual (932.36 KB)12/27/2016

AF1 – Tender text (104.7 KB)12/28/2016