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• Electrodynamic Vibration Test Systems
• Electrodynamic Vibration Test Systems

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  Vibration measuring systems

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Seismic Monitorig Systems

Vibration Measuring System

Vibration Switch（VM-90M Series）

Analog type which has lots of achieved hazard prevention

Widely used and long-selling device.

• Suitable pickups
• Specifications
• Outward dimensions

Features

■Corresponds to all kind of pickup

■Easy installation : stationary, panel housed or wall-mounted

■Customizable power supply, alarm delay time and so on

Suitable pickups

Type	VP-3144 C/D*1	VP-3213 AC/AD*1	VP-3223 AC/AD*1	VP-A52IW	VP-3133 HEX/VEX	VP-3134 AEX
Pickup type	Electrodynamic velocity type			Piezoelectric accelerometer	Electrodynamic velocity type
Sensitivity	10 mV / (mm/s)	17.5 mV / (mm/s)		5 mV / (m/s2)	17.5 mV/ (mm/s)	10mV / (mm/s)
Natural frequency	14 Hz	4.5 Hz		35,000 Hz	4.5 Hz	14 Hz
Operational temperature range	-20 to +80 ﾟC	-20 to +70 ﾟC		-30 to +110 ﾟC	-20 to +70 ﾟC
Structure	Drop-proof (Equivalent to IP32)			Insulative and water proof	Flame-proof (EX d ⅡBT4Gb)
Outward appearance		Horizontal only	Vertical only
Notes	Suitable for monitoring of medium frequency displacement or velocity	Suitable for monitoring of low frequency displacement or velocity		Suitable for monitoring of acceleration	Suitable for monitoring of low frequency displacement or velocity	Suitable for monitoring of medium frequency displacement or velocity

*1 Cable connection method C : G 1/2 pipe thread / D : direct connection of clamp
*Another pickup for high temperature or waterproof are also available. Please refer to pickup pages

Specifications

Type	Monitor for displacement	Monitor for velocity	Monitor for acceleration
	VM-90 MED	VM-90 MEV	VM-90 MEA
Frequency range	15 to 500 Hz +0.5 dB -3 dB 20 to 500 Hz ±0.5 dB	15 to 1,000 Hz +1 dB -3 dB 20 to 850 Hz ±1 dB	10 to 8,000 Hz ±3 dB 20 to 5,000 Hz ±1 dB
Measurement range (full scale) *1	Select from 0 to 20 μmp-p, 0 to 50 μmp-p, 0 to 100 μmp-p, 0 to 200 μmp-p, 0 to 500 μmp-p	Select from 0 to 1 mm/s, 0 to 2 mm/s, 0 to 5 mm/s, 0 to 10 mm/s, 0 to 20 mm/s, 0 to 50 mm/s	Select from 0 to 1 m/s2, 0 to 2 m/s2, 0 to 5 m/s2, 0 to 10 m/s2, 0 to 20 m/s2, 0 to 50 m/s2, 0 to 100 m/s2
Alarm step	2 steps
DC output (for recorder)	4 to 20 mA (at the load 0 to 300 Ω) 1 to 5 V (100 kΩ or more, 250 Ω connection to outside)
Alarm action	Activated over alarm setting value (time constant : approx. 3 seconds)
Ararm setting range	Possible to set 10 to 100% of full scale
Alarm contact	1C contact for each alarm
Alarm contact capacity	AC250 V 3.0A/DC24 V , 3.0 A (at resistive load)
Alarm reset	Automatic
Operating temperature/ humidity range	0 to 50 ﾟC　0 to 85%RH (Non-condensing)
Power supply	AC100 V or 110 V *2 (+10%/-15%), 50/60 Hz
Power consumption	15 VA or less
Size/Mass	200 (W) x 103 (D) x 105 (H) mm (excluding connectors etc.) /2 kg

*1 Please inform us the measurement range
*2 AC 200 / 220 V is optional

Outward dimensions

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