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ASU1/2

AMBIENT AIR MONITORING ASU-1 & ASU-2 

Designed with occupational health and safety in mind, the ASU is leading the way in the management of worker wellness and wellbeing. With the ASU located at 1.5m above floor level, either as a stand-alone unit or as part of a network system, a sample draw line continuously monitors from the target area. With specialist maintenance safety equipment no longer a requirement and a consistent working height for the operator, the ASU reduces the whole bill whilst significantly improving worker safety.

Specifications

PUMP/FLOW MONITOR ASU-1 ASU-2

Input 24v DC ±20% 70mA 24v DC ±20% 170mA
Flow Rate 0.4~1.0 litres/min 1~5 litres/min
Continuous Running Pump Motor – 6 years expected
Diaphragm – 3 years in air
Pump ON/OFF - Option Timed 1 min on 4 min off – jumper selectable
Flow Fail Monitor Green LED – normal operation
Red LED – pipe blockage / pump fail (FF)
Sounder – not less than 85dB @ 30cm
Outputs Relay S.P.C.O 4Amp @ 24vDC – NE/ND
Selectable (FF) output 5/15v DC Factory set – open drain
Sample Line Max Length – 50m, min 1m
6mm OD 4mm ID
Material – nylon, polypropylene, PTFE
Max Length – 100m, min 1m
6mm OD 4mm ID
Material – nylon, polypropylene, PTFE
Couplings In/Out – push fit – barbed, enclosure base/rear
TRANSMITTER
Type Addressable (Network) / Direct
Gases Flammable
Oxygen
Toxic
Outputs 4~20mA
CANbus
Others – Contact GDS Data logging – intervals – variable time
Roll over / stop storage 2,880 readings
Sensor Electrochemical
Infrared
Semiconductor
Pellistor – Catalytic
PID
ENCLOSURE
Type 30J Safe area use only
Protection IP64
Operating Temperature -15°c to 55°c
Relative Humidity 0-95 non condensing
Dimensions H – 145 W – 147 D – 90 mm
Material ABS Flame Retardant FR40 Lid Screws M4SS
Finish Signal White RAL 9003
Weight - Finished Product 520gms 710gms
Entries - cable Rear 5 x 20mm knock outs, Base 2 x 20mm knock outs
MOUNTING/POSITION
The pump sensor unit should be mounted at chest height with the sample line travelling to the chosen target area at either maximum height for lighter than air gases or minimum low level (100mm) for heavier than air gases.

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