1.7.1. Tender text Volume flow controller with built-in measured-value recording VRI-DN

volume flow rate controller with built-in measured-value recording for use in main supply air and return air ducts of high-pressure and low-pressure plants, consisting of:

Circular housing made of galvanized sheet steel for:
__ two-sided connection to ducts to DIN 24145 and DIN 24146,
__ flange connection to DIN EN 12220,

damper blade with built-in silicon seal *1) for full shut- off, airtight to DIN 1946, Part 4,
__ insulating shell to reduce sound radiation and heat loss,

integrated electronic control system made by Belimo, type NMV-D2M, with dynamic measurement method for recording the dynamic pressure, inclusive of sensor and servomotor.

Technical data
Use in CAV systems with
__ one nominal volume flow rate,   
   volume flow rate:  ... l/s (m3/h)
__ two nominal volume flow rates, 
   volume flow rate max:  ... l/s (m3/h) *2)
   volume flow rate min:  ... l/s (m3/h) *2)

Use in VAV systems with	
   volume flow rate max:  ... l/s (m3/h) *2)
   volume flow rate min:  ... l/s (m3/h) *2)

Power range
	__ L 10
	__ L 13
Working range
	__ 0 – 10 V
	__ 2 – 10 V

Limit volume flow rate:	volume flow rate limit:  ... l/s (m3/h)
Size:  DN  ...	

Acceptable sound power level
– air flow noise:  ... dB(A) ref. 10-12 W
– housing sound radiation:  ... dB(A) ref. 10-12 W

Make:	KRANTZ KOMPONENTEN
Type:	VRI - DN


– Subject to technical alterations –

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*1) Other materials on request
*2) Unless otherwise specified in the order, the controller is supplied with the settings 
   volume flow rate min = 0 and volume flow rate max = volume flow rate limit


YIT Germany GmbH 
KRANTZ KOMPONENTEN 
Uersfeld 24  |  D-52072 Aachen  |  Germany 
Phone:  +49 241 441-1  |  Fax:  +49 241 441-555 
info@krantz.de  |  www.krantz.de