D51MX Duct Sampling Unit

The D51MX consists of a D51 duct sampling housing fitted with a 4B base wired to suit an MX analogue addressable 850P/814P or 850PH/814PH photoelectric smoke detector. When fitted with the detector the DSU is designed to sample air in air conditioning ducts and pass the air through the smoke detector. The D51MX is fitted on the outside of the duct to be sampled allowing easy access for detector servicing and replacement of the dust filters. To cater for most duct sizes, a sampling tube extension is available in 3 metre lengths. The VIGILANT E500 Mk2 Series Remote Indicators can be used for remote indication of an alarm.

Compatible with MX1, MX4428, 4100ESi.

Details

D51MX

Specifications:

Operating Voltage 20 to 40Vdc
Quiescent Current 275µA (typ.)
Alarm Current 10mA with LED on
Duct Pressure1 -1.15 to +3.0 kPa
Duct air velocity for
alarm at 8%Obs/m1 1, 2, 4, 8m/s
Sampling Tube Length 160mm minimum
Max. Duct Width 1.8m
Remote Indicator E500 Mk2 Series
Dimensions
Base & Cover (LWH) 278x190x113 mm
Sampling Tube Pitch 122mm
Duct Holes Required 24mm dia. x 2 plcs
Ambient Temp -10°C to +55°C
Relative Humidity 10% to 95% (n/cond)
ActivFire Listed2 afp-1496

Part Numbers
D51MX Duct Sampling Unit
D51L Baffle box of 10
D51F Filter box of 10
D51T3 3m Sampling Tube
D51K100 Sampling Tube End Cap (pkt of 10)

Part No. DM1MX

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