• Industrial Fans
• Compressors
• Centrifugal Pumps
• Motors
• Cooling Towers

• Dual Alarms
• 3-digit LCD display
• 30-second start-up trip delay to prevent false alarms
• 4-20 mA output
• Velocity or Displacement response

The 1-895 Vibration Switch is a versatile, multi-purpose device featuring a built-in accelerometer and solid-state electronics. It is available in various ranges and is designed to monitor vibration levels on critical machinery, providing timely feedback in case of breakdowns. The device includes a 30-second start-up delay initiated by power application or grounding of the start input, with the delay beginning only after the start input is released.

The current vibration level is shown on a 3-digit LCD and output on a proportional 4-20 mA current loop. Alarm levels are set using two front-panel push-buttons and the display. Two alarm indicators signal when an alarm level is exceeded, and the corresponding output is enabled. Alarms are latched and must be reset either at the 1-895 or via a remote alarm reset input.

• Vibration Range: Velocity (ips, peak), Acceleration (g’s, peak), Displacement (mils, peak-peak)
• Frequency Range: 5 Hz to 500 Hz ±3 dB (internal sensor)
• Alarm Setpoints: User programmable 0 - full scale
• Alarm Outputs: Dual alarm relays isolated from system electronics
• Analog Output: 4-20 mA current loop proportional to full scale output
• Alarm Reset/Start Inputs: External inputs must be shorted to activate
• Display: 3-digit LCD display
• Power: 18-30 VDC @ 125 mA
• Temperature Range: Operating: 0°F to +185°F (-18°C to +85°C), Storage: -67°F to +185°F (-55°C to +85°C)
• Humidity: 0 to 95% relative humidity non-condensing

• Power Connections: +24 VDC, -Return (24 VDC)
• Analog Output: 4-20 mA+, 4-20 mA-
• Control Inputs: Start Input, Reset Input
• Alarms: 1 Out -, 1 Out +, 2 Out -, 2 Out +

Specifications may change without notice as part of CEC's policy of continuous product improvement.

• North America: CSA C/US Class I, Division 2, Groups A, B, C, and D, Temp code T5; Max Ambient +85°C
• European: ATEX EEx d IIC T5, Ta = -40°C to +85°C