Hontzsch UFA, Руководство по эксплуатации, Страница: 5 / 15

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U327_UFAUVALDG16_B_e_170808
www.hoentzsch.com 5/15
5.3 Operating Conditions
ambient air temperature in use : 0 to +50 °C
place of installation : control cabinet on mounting rail EN 50022
protection class : IP20
mounting attitude : no restrictions
5.4 Compatibility
All Höntzsch vane wheel probes FA or FAR and all Höntzsch vane wheel measuring tubes FA Di or FAR Di
(without integrated transducer) can be connected to the UFA transducer.
The UFA replaces the U2a transducer with FA / FAR input.
All Höntzsch vortex probes VA and all Höntzsch vortex measuring tubes VA Di (without integrated trans-
ducer) can be connected to the UVA transducer. The UVA replaces the U2a transducer with VA input.
5.5 Housing and Connectors
The LDG16 housing is designed for snapping on to 35mm DIN rail according to DIN EN 60715 and SN EN
50022 or for screwed connection. It is an insulator housing complying with machine and automobile indu-
stry regulations with 16 shock-proof terminals according to DIN VDE 0100 and VGB4, for wires with cross-
section 0.14 ... 4 mm².
Protection class
: housing IP40, terminals IP20
Material : Macrolon
connections : by terminals
external dimensions : W/H/D = 55/75/110 mm
5.6 Electrical Data
Supply voltage, mains supply:
230 V AC (215 ... 255 V AC), 50 ... 60 Hz, power < 10 VA
24 V DC (20 ... 27 V DC), power < 5 W
12 V DC (10 ... 17 V DC), power < 5 W
The mains supply is electrically isolated from the UFA/UVA inputs and outputs.
UFA input flow v/FA or v/FAR:
for Höntzsch vane wheel flow sensors FA and FAR designed as probes (ZS, TS ..., ZSR, TSR ...) and as
measuring tubes (FA Di, FAR Di ...).
When using sensors in Ex-zone category 2 an isolation/supply unit (e.g. LDX2) is an essential require-
ment.
UVA input flow v/VA:
for Höntzsch vortex flow sensors VA designed as probes (VA40 ...) and as measuring tubes (VA Di ...).
When using sensors in Ex-zone categories 1 and 2 an isolation/supply unit (e.g. LDX2) is an essential re-
quirement.
UFA analog output:
for FA and FAR*: 4 ... 20 mA = 0 ... x m/s (or m³/h),
for FAR : 4 ... 12 ... 20 mA = -x ... 0 ... +x m/s (or m³/h),
terminal values x configurable / burden max. 400 Ohm
alternative:
for FA and FAR*: 0 ... 10 V = 0 ... x m/s (or m³/h),
for FAR : 0 ... 5 ... 10 V = -x ... 0 ... +x m/s (or m³/h),
terminal values x configurable / impedance 1 kOhm
* for FAR sensors when configuring the relay: ±flow direction