Extech 461960 Operating Manual

User's Guide

RPM Controller / Monitor

Model 461960

Introduction

Congratulations on your purchase of the Extech 461960 RPM Controller/Monitor. This
meter is shipped fully tested and calibrated and, with proper use, will provide years of
reliable service.

Features

∗ Professional Tachometer ( RPM, m/min., ft/min. ) monitor and controller.
∗ Build in control relay and alarm relay.
∗ Alarm Relay will close when the measured value reaches the high or low alarm

value.

∗ Control Relay will close when the measured value reaches the control value.
∗ Hysteresis value setting for control and alarm function.
∗ Set the number of input pulses per revolution.
∗ Settable roller diameter for the surface speed ( m/min., ft/min. ) function.
∗ Works in conjunction with the optional proximity or photo sensor.
∗ Large easy to read red LED display.
∗ RS232 computer interface for use with optional software.
∗ Microprocessor circuit ensures high accuracy and provides special functions and

features.

∗ Standard 96 X 48 mm DIN case.
∗ Optional data acquisition software.

Warranty

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects
in parts and workmanship for one year from date of shipment (a six month limited warranty
applies to sensors and cables). If it should become necessary to return the instrument for
service during or beyond the warranty period, contact the Customer Service Department at
[phone] ext. 210 for authorization or visit our website www.extech.com
information. A Return Authorization (RA) number must be issued before any product is
returned to Extech. The sender is responsible for shipping charges, freight, insurance and
proper packaging to prevent damage in transit. This warranty does not apply to defects
resulting from action of the user such as misuse, improper wiring, operation outside of
specification, improper maintenance or repair, or unauthorized modification. Extech
specifically disclaims any implied warranties or merchantability or fitness for a specific
purpose and will not be liable for any direct, indirect, incidental or consequential damages.
Extech's total liability is limited to repair or replacement of the product. The warranty set
forth above is inclusive and no other warranty, whether written or oral, is expressed or
implied.

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461960 V1.1 8/07

Safety

International Safety Symbols

Caution : Risk of electric shock !

This symbol, adjacent to a terminal, indicates that, under normal use, hazardous
voltages may be present

Caution : Risk of electric shock !

This symbol, adjacent to another symbol or terminal, indicates the user must refer
to the manual for further information.

Equipment protected throughout by Double Insulation or Reinforced Insulation.

Safety Procedures

∗ Do not use fingers or any tool to touch the Wire Terminals.
∗ Do not exceed 0.5A relay contact load.
∗ The instrument contains no user serviceable parts and should not be opened

by the user.

∗ Repair or service should be done by a qualified technician only.
∗ Always apply the correct ACV power voltage
∗ Cleaning - Only use the dry cloth to clean the plastic case !

Operating conditions

∗ Comply with EN61010. Transient overvoltage at Mains Supply 2500V.
∗ Pollution Degree 2.
∗ Altitude up to 2000 meters.
∗ Indoor use.
∗ Relative humidity 80% max.

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