Extech Instruments 461891 Manuale utente

User’s Guide

Contact Tachometer

Model 461891

•Measures from 0.5 to 19999 rpm

•Min/Max Memory Recall

•Cone, funnel, surface attachments included

•Quartz crystal time base

461891 Ver. 1.9 7/02

Introduction

Congratulations on your purchase of Extech’s Digital Tachometer. This professional meter,

with proper care, will provide years of safe reliable service.

Specifications

General Specifications

Circuit Custom one-chip LSI microprocessor circuit

Time base Quartz crystal

Display 5-digit multi function LCD display

Measurements Rotation Speed 0.5 to 19,999 rpm

Surface Speed 0.2 to 6560 ft/min.

0.05 to 1999.9 m/min

Memory Last and Max/Min readings

Sampling Time 1 second

Operating Temperature/RH 32 °F to 122 °F (0 °C to 50 °C) / <80% RH

Power Supply 4 x 1.5V AA batteries

Power Consumption Approx. 10 mA

Weight 0.62 lb (280 g) including batteries

Dimensions 8.2 x 2.8 x1.5" (208 x 72 x 37 mm)

Accessories Cone rpm adaptor, funnel rpm adaptor, surface speed

test wheel, and carrying case

Range Specifications

Range Resolution Accuracy

rpm 0.5 to 19,999 rpm 0.1 rpm (0.5 to 999.9 rpm)

1 rpm (over 1000 rpm)

+ (0.05% rdg +1d)

@23+ 5oC

ft/min 0.2 to 6560 ft/min 0.1 ft/min (0.2 to 999.9 ft/min)

1 ft/min (over 1000 ft/min) ± (1% rdg + 1 digit)

m/min 0.05 to 1999.9 m/min 0.01 m/min (0.05 to 99.99 m/min)

0.1 m/min (over 100 m/min)

461891 Ver. 1.9 7/02

Front Panel Description

1 Shaft with cone adapter attached

2 LCD display

3 Measure button

4 Function select switch

5 Memory button

6 Funnel adapter attachment

7 Surface wheel adapter attachment

Operation

RPM Measurement

a) Slide the Function Switch to the "RPM" position.

b) Install the appropriate RPM Adapter on the Shaft

c) Press the Measure button while lightly pressing the RPM adapter against the

central opening of a rotating shaft in proper alignment. Release the Measure

button when the display stabilizes (about 1 to 2 seconds).

Surface Speed Measurement

a) Slide the Function Switch to "ft/min" or "m/min"

b) Attach the Surface Speed Wheel to the Shaft

c) Press the Measure button and hold the surface speed wheel against the device

being measured. Release the Measure button when the display stabilizes.

Memory Recall

The last value and last max and min values obtained before releasing the Measure

button are automatically stored by the meter. These memorized values can be

displayed by pressing the Memory button as described below:

a) Press once and hold - the last value is displayed followed by the "LA" icon

b) Press again and hold - the maximum value is displayed followed by the "UP"I con

c) Press again and hold - the minimum value is displayed followed by the "dn" icon

Maintenance

Battery Replacement: When the low battery indication appears ("LO" on the display),

slide the battery cover off of the rear of the instrument, replace batteries with four 1.5V AA

batteries and replace the cover. Remove the batteries if the instrument will not be used for

a long period of time.

Cleaning: Use only a dry cloth to clean the plastic case.

Calibration / Repair Services

Extech offers complete repair and calibration services for all of the products we sell. For

periodic calibration, NIST certification or repair of any Extech product, call customer

service for details on services available. Extech recommends that calibration be performed

on an annual basis to insure calibration integrity.

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 on 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 (781) 890-7440 ext. 210 for authorization or visit our

website at www.extech.com(click on ‘Contact Extech’ and go to ‘Service Department’ to request an RA

number). 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 l0 Td(ct,)Tj( )1 0.d(liabi( )Tj0.898 0)Tj( )Tj52.02002 Tc -0.002 Tw 0.215 0 Td(ng)Tj30 Td(f)T0.001 Tc -0.001 Tw Tj( )Tj4 0

Altri manuali per 461891

Indice

Altri manuali Extech Instruments Strumento di misura

Extech Instruments

Extech Instruments SL510 Manuale utente

Extech Instruments

Extech Instruments HD350 Manuale utente

Extech Instruments

Extech Instruments LT10 Manuale utente

Extech Instruments

Extech Instruments CO100 Manuale utente

Extech Instruments

Extech Instruments ExStik DO600 Manuale utente

Extech Instruments

Extech Instruments LT300 Manuale utente

Extech Instruments

Extech Instruments 401025 Manuale utente

Extech Instruments

Extech Instruments AN10 Manuale utente

Extech Instruments

Extech Instruments MA640 Manuale utente

Extech Instruments

Extech Instruments ExStik PH100 Manuale utente

Extech Instruments

Extech Instruments 407750 Manuale utente

Extech Instruments

Extech Instruments MA160 Manuale utente

Extech Instruments

Extech Instruments EC210 Manuale utente

Extech Instruments

Extech Instruments ExStik SX800 Series Manuale utente

Extech Instruments

Extech Instruments MO257 Manuale utente

Extech Instruments

Extech Instruments RH401 Manuale utente

Extech Instruments

Extech Instruments 461891 Manuale utente

Extech Instruments

Extech Instruments 407495 Manuale utente

Extech Instruments

Extech Instruments 407113 Manuale utente

Extech Instruments

Extech Instruments PQ34-12 Manuale utente

Extech Instruments

Extech Instruments 461895 Manuale utente

Extech Instruments

Extech Instruments HD300-NISTL Manuale utente

Extech Instruments

Extech Instruments TB400 Manuale utente

Extech Instruments

Extech Instruments EC100 Manuale utente

Manuali Strumento di misura popolari di altre marche

Suaoki

Suaoki D40 Manuale utente

Elster

Elster BK-G1.6 Manuale utente

Endress+Hauser

Endress+Hauser Deltabar FMD71 Manuale

Duratool

Duratool D03128 Manuale utente

Vega

Vega VEGAPULS 65 Manuale utente

Tonghui

Tonghui TH2618B Manuale utente

Tenmars

Tenmars TM-801 Manuale utente

MSR

MSR 145 Manuale utente

TPS

TPS WP-82 Manuale utente

ELMETRON

ELMETRON CP-511 Manuale utente

PCB Piezotronics

PCB Piezotronics 003C30 Manuale utente

Tenma

Tenma 72-10465 Manuale utente

Endress+Hauser

Endress+Hauser Proline Promag 50 Specifiche tecniche

Siemens

Siemens SITRANS F Coriolis FCT030 Manuale elenco delle parti

KLINGER

KLINGER CMF V Series Manuale utente

EXFO

EXFO FTB-2 Manuale operativo e di manutenzione

Keysight

Keysight M8290A Manuale utente

ADTEK

ADTEK MW-5 Manuale utente