Arkon Channelmag Important Note, Installation, Dimensions and Approx. Weights 1 CM2 Sensors

ChannelMag

Section 2 Installation

Pipe Confi	Single Sensor Number of Straight			Multiple Sensors Number of
	Pipe Diameters D Upstream			Straight Pipe Diameters D
guration
		Downstream		Upstream Downstream
90° bend
upstream and	10 D		5 D	5 D	2 D
downstream
After a tee	15 D		5 D	8 D	2 D
Upstream
partially	25 D		5 D	15 D	2 D
closed valve
Downstream			8 D		5 D
partially
closed valve

2.3.3 Important Note

￿￿Note

When using an ultrasonic level transducer, or a hydrostatic level transducer in a stilling well, it must be installed at least 1 channel width before or after the ends of the ramps when the ChannelMag sensor lies on the channel bed. This avoids surface level drops directly above the

sensors caused by sub-critical flows, or level rises caused by super critical flows.

These critical flows are circumvented if the CM2 is let into a recess in the bed. As such, the upper

surface of the CM2 sensor may be up to 1” (25mm) above the channel bed to avoid silt build-up. The ultrasonic level transducer may then be mounted directly above the CM2 sensor(s). Note the minimum dead band for the ultrasonic level transducer.

When a hydrostatic level transducer is used it is normally installed in the ramp, with its sensing at the point of the ramp. This also avoids critical flow drops or rises in the media level above the ChannelMag sensor.

2.4Installation, Dimensions and Approx. Weights

2.4.1CM2 Sensors

Nominal		Actual															Weight
CM2		CM2			L			S			R		H		M		Each
Width		Width
in.	mm.	in.	mm.	in.		mm.	in.		mm.	in.		mm.	in.	mm.	in.	mm.	lb	kg.
8.0	200	10.0	254	40.0		1016	8.0		203	14.5		370	2.50	64	6.0	152	55	25
24.0	600	26.0	660	60.0		1520	25.0		610	18.0		460	3.12	80	12.0	305	186	85
40.0	1000	42.0	1066	80.0		2030	40.0		1020	20.0		510	3.50	89	24.0	610	355	165

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