GZ121–High-quality tachogenerator with 2 galvanically isolated alternating voltage output signals, approved for the shipbuilding industry : NORIS Group GmbH

High-quality tachogenerator with two galvanically isolated alternating voltage outputs
Suitable for extremely harsh operating conditions
Direct and indirect drive possible
Degree of protection: IP66
Variable mechanical connections for speed acquisition

Tachogenerators of type GZ121 are mechanically connected 2-channel speed encoders with a sinusoidal alternating voltage output signal. They are attached to the shaft via a flange or bracket. The mechanical connection is realised via a coupling. They do not require any power supply. These tachogenerators are suitable for acquiring shaft speeds. Their compact and robust design, as well as their approval by shipbuilding industry classification societies, make them ideal for marine applications.

Measuring range	150 - 2,500 rpm
Output channels	2 channels
Output signal	2 x galvanically isolated alternating voltage
Operating temperature	-20 … +80°C
Degree of protection	IP66

Datasheet

DNV GL certificate

Declaration of conformity

Description	Item no.
Bracket Ø 120, prepared, mounting hole Ø 40^h7	HA6
Bracket Ø 120, not prepared, mounting hole Ø 40^h7	HA6-1
Pedestal to DIN 5377, base mounting, axe height 63, mounting hole Ø 40^h11	HA8-1
Pedestal to DIN 5377, base mounting, axe height 125, mounting hole Ø 40^h11	HA8-2
Flange Ø 120 to DIN 5377 connection 7, with bore hole, mounting hole Ø 40^h7	FL21-1
Flange Ø 120, to DIN 5377 connection 7, not prepared, mounting hole Ø 40^h7	FL21-2
Driver for connection between shaft and coupling: Different thread, diameter and slit deliverable	ANx-xG
Rubber coupling, 10^F7 bore hole, 50 mm length	KG2-1
Wheels or pulleys of indirect drive Friction wheel Ø 99, additional deliverable	RR99
Wheels or pulleys of indirect drive V-belt pulley Ø 100, additional deliverable	RK100

Part code structure
GZ121-B	(no identifier)	Example: G121-B
GZ121-B	Mechanical connection

Part code GZ121
Mechanical connection	(no identifier)	Connection 2 as per DIN 5377 (standard version)
	-D	Connection for flexible shaft as per DIN 75532 E2, drawing 40.400
	-R	Connection to shaft with blade, drawing 40.400
	-Wx	Connection to shaft of a special length, x = length of shaft, drawing 40.400
GZ121-B	-___	Example: GZ121-B

Customer-specific types

If you don’t find anything suitable among our standard types, we’ll be happy to develop a tailored solution with you to meet your requirements (-P types). They also meet the abovementioned standards thanks to our type-approved modular kits.