Extech Instruments Contact Tachometers, Photo Tachometers Catalog Page

Contact & Photo Tachometers

N Indicates products that are available with optional calibration traceable to NIST. See page 160 for a complete listing.

HANDHELD TACHOMETERS

Rev Up Your
Diagnostics

Measure RPM, surface speed, and revolution

counts with Extech tachometers (see pages

126-129). Models include contact, non-

contact and combination, as well as compact,

stroboscopes and panel-mount versions.

461937 461990

461891 Contact

Tachometer

Fast and accurate RPM
and surface speed
measurements

• Make contact measurements
of rotating objects

• Measure linear surface speeds
in ft/min or m/min using three
accessory wheels provided

• Recalls Last/MAX/MIN values

• Complete with cone tip, flat tip
and spare wheel for surface
speed measurements, four 1.5V
AA batteries, and carrying case

461893 Non-

contact Photo
Tachometer

Non-contact RPM
measurements using
visible light

• Make non-contact
rpm measurements of
rotating objects

• Use reflective tape on object
to be measured and point
the integral light beam

• Integral light beam has an
ideal measurement range
up to 6" (152mm) distance

• Readings updated
every second

• Recalls Last/MAX/MIN values

• Complete with 23" (0.6m)
reflective tape, four 1.5V AA
batteries, and carrying case

461895

Combination
Contact/Photo
Tachometer

Combines both contact and
non-contact models for use
in all applications

• Characters on display reverse
direction depending on
contact or photo mode

• Uses visible light to read up
to 6" (150mm) from target

• Memory/readings button holds
last reading for 5 min and
recalls min/max readings

• Complete with wheels for
linear surface speed or rpm
measurements, four 1.5V AA
batteries, 23" (0.6m) reflective
tape, and carrying case

461995

Combination
Contact/Laser
Photo Tachometer

Combines both contact and
non-contact models for use
in all applications

• Characters on display reverse
direction depending on
contact or photo mode

• Laser guided for greater
distance non-contact
measurements up to 6.5ft (2m)

• Memory/readings button holds
last reading for 5 min and
recalls MAX/MIN readings

• Complete with wheels for
linear surface speed or rpm
measurements, four 1.5V AA
batteries, 23" (0.6m) reflective
tape, and carrying case

RPM10

Combination
Laser Tachometer
+ IR Thermometer

Photo/Contact Tachometer
includes a non-contact IR
Thermometer for surface
temperature measurements

• Built-in IR thermometer
with laser measures remote
surface temperature on
motors and rotating parts

• Fixed 0.95 emissivity, 6:1
distance to target ratio

• Non-contact Photo
tachometer uses a Laser
for greater measuring
distance up to 6.5ft (2m)

• Contact tachometer
for RPM and surface
speed measurements

• Recalls Last/MAX/MIN values

• Characters on display reverse
direction depending on mode

• Complete with tips/wheel, four

1.5V AA batteries, reflective
tape, and carrying case

ACCESSORIES

461937 Reflective Tape -Ten

461990 Contact Wheels - 2

reflective tape strips:
23x0.25” (584x6mm)
ea. strip

sets of cone tip, flat
tip, and spare wheel

N NIST traceable certificate with

data is available when you order your
meter with Certificate Traceable to NIST.
Look for this symbol N next to product
part numbers.

126

126

$43.99

$42.99

SPECIFICATIONS 461891 N 461893 N 461895 N 461995 N RPM10 N SPECIFICATIONS

rpm 0.5 to 20,000 5 to 99,999 Photo: 5 to 99,999 / Contact: 0.5 to 19,999 Photo: 10 to 99,999 / Contact: 0.5 to 19,999 Photo: 10 to 99,999 / Contact: 0.5 to 20,000 rpm
ft/min 0.2 to 6560 — 0.2 to 6560 0.2 to 6560 0.2 to 6560 ft/min
m/min 0.05 to 1999.9 — 0.05 to 1999.9 0.05 to 1999.9 0.05 to 1999.9 m/min
Basic Accuracy ±0.05%rdg ±0.05%rdg ±0.05%rdg ±0.05%rdg ±0.05%rdg Basic Accuracy
Max rpm Resolution 0.1rpm 0.1rpm 0.1rpm 0.1rpm 0.1rpm Max. rpm Resolution
Laser — — — Yes Yes Laser
Temperature (IR) — — — — -4 to 600°F (-20 to 315°C) Temperature (IR)
CE approved Yes Yes Yes Yes Yes CE approved
Dimensions 6.7x2.8x1.5" (170x27x37mm) 6.7x2.8x1.5" (170x27x37mm) 8.5x2.6x1.5" (216x66x38mm) 8.5x2.6x1.5" (216x66x38mm) 8.5x2.6x1.5" (216x66x38mm) Dimensions
Weight 9.2oz (260g) 8.8oz (250g) 10.6oz (300g) 10.6oz (300g) 10.6oz (300g) Weight
Warranty 1 year 1 year 1 year 1 year 1 year Warranty

127127