© Monarch Instrument 2002 all rights reserved
1071-4860-122
MONARCH INSTRUMENT
Instruction Manual
Phasar-Tach
Phasar-Tach-R
Portable Tachometers
15 Columbia Drive
Amherst, NH 03031-2334 USA
Phone: (603) 883-3390
Fax: (603) 886-3300
E-mail: support@monarchinstrument.com
Website: www.monarchinstrument.com
Safeguards and Precautions
1. Read and follow all instructions in this manual carefully,
and retain this manual for future reference.
2. Do not use this instrument in any manner inconsistent
with these operating instructions or under any
conditions that exceed the environmental
specifications stated.
3. Making measurements in close proximity to rotating
equipment can be dangerous. Keep all loose clothiing
and hair away from exposed moving machinery.
Properly replace all machinery guards after
completing measurement.
4. The socket on the front of the instrument is for use
with a remote charger. Only use model R-5 (115 Vac)
or R-6 (230 Vac) rechargers to charge the instrument.
5. The Phasar-Laser has a laser
beam light source. Do not view
the laser beam directly as it
could be hazardous to the eyes.
Do not point the laser beam into
another person’s eyes. Do not
view the laser beam with
telescopic devices.
6. With exception of replacing the batteries, this
instrument is not user serviceable. For technical
assistance, contact the sales organization from which
you purchased the product or Monarch Instrument
directly.
AVOID EXPOSURE
LASER RADIATION IS EMITTED
FROM THIS APERTURE
LASER RADIATION
AVOID DIRECT EYE EXPOSURE
PEAK POWER
WAVELENGTH
CLASS IIIA LASER PRODUCT
3mw
650nm
LIMITED WARRANTY
SELLER warrants hardware products to be free from any defect in materials or workmanship for a period of
one (1) year from date of shipment to BUYER. SELLER’s entire liability and BUYER’s sole and exclusive
remedy resulting from any defect in workmanship or material in the hardware product covered by this limited
warranty shall be limited to and fully discharged by the SELLER’s option of replacement or repair of such item
without charge. The limited warranty provided in this clause is in lieu of all other warranties, expressed or
implied, arising by law or otherwise. ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE ARE EXCLUDED. This limited warranty shall not be modified except by
an arrangement signed by both parties specifically referencing this clause.
SELLER warrants that any software supplied will operate in accordance with the documentation or manual
supplied therewith in all material respects when used in strict compliance with such documentation or manual.
Notwithstanding the foregoing, BUYER acknowledges that, since software is complex and therefore may
have defects, BUYER’s sole and exclusive remedy for any such defects or breach of this warranty shall be to
require SELLER, within a reasonable period of time, to provide all reasonable programming services to
correct programming errors in the software. Except as provided above SELLER MAKES AND BUYER
RECEIVES FROM SELLER NO EXPRESS OR IMPLIED WARRANTIES OF ANY KIND WITH RESPECT
TO ALL OR ANY PORTION OF SOFTWARE AND BUYER HEREBY AGREES AND ACKNOWLEDGES
THAT IT ACCEPTS THE SOFTWARE IN ‘AS IS’ CONDITION. SELLER HEREBY EXPRESSLY
EXCLUDES ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE WITH RESPECT TO THE SOFTWARE. BUYER agrees that any specific right or remedy
granted to BUYER hereunder with respect to any breach or default by SELLER shall be in lieu of all other
rights and remedies otherwise available to BUYER at law or in equity as the result of such breach or default,
regardless of whether based on contract, tort, strict liability, or other theory of liability.
IN NO EVENT SHALL SELLER BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL,
CONSEQUENTIAL, OR PUNITIVE LOSSES OR DAMAGES (INCLUDING, BUT NOT LIMITED TO,
LOSSES OR DAMAGES FOR ANY LOST PROFITS OR LOST DATA) AS THE RESULT OF ANY BREACH
OR DEFAULT BY SELLER WITH RESPECT TO THE HARDWARE OR SOFTWARE, EVEN IF SELLER
HAS BEEN ADVISED OR MADE AWARE OF THE POSSIBILITY OF ANY SUCH LOSSES OR DAMAGES
AND REGARDLESS OF WHETHER THE CLAIM IS BASED ON CONTRACT, TORT, STRICT LIABILITY,
OR OTHER THEORY OF LIABILITY.
This limited warranty does not extend or apply to consumables (including, but not limited to, lamps and
batteries, if applicable) or equipment, instruments or accessories which are warranted separately by the
original manufacturer of these items.
DECLARATION OF CONFORMITY
TABLE OF CONTENTS
TABLE OF CONTENTS
As Manufacturer:
Monarch Instrument
Division of Monarch International Inc.
15 Columbia Drive, Amherst NH 03031 USA
declares under Monarch’s sole responsibility that the product:
Name: Hand Held Tachometer
Model: Phasar-Tach
to which this declaration relates is in conformity with the following standards:
EMC: EN50082-2:1995, Heavy Industrial
and therefore conforms with the requirements of Council Directive
89/336/EEC relating to electromagnetic compatibility. The testing of this product
was performed by Curtis Straus Laboratories, MA in November of 1997.
(File 970573-2).
17th November 1997
Manufacturer (Amherst,NH) Alan Woolfson, VP Engineering (Authorized Signature)
EN55011:1991 Group 1, Class B
SPECIFICATIONS ................................................................ 1
OVERVIEW .......................................................................... 2
OPERATION ......................................................................... 2
USING THE PHASAR-TACH WITH A REMOTE OPTICAL
SENSOR (ROS-5P) ............................................................... 3
CALIBRATION AND SELF-TEST .......................................... 3
BATTERIES .......................................................................... 5
CLEANING ........................................................................... 5
OPTIONS AND ACCESSORIES ........................................... 6
SPECIFICATIONS
This product is designed for indoor or outdoor use under the following
conditions (per IEC1010-1):
Speed Range: 5 RPM to 100,000 RPM
Accuracy: ± 1 RPM or .01% of reading
Resolution: 1 RPM
Display: 6-digit 0.45” high liquid crystal
Display Update: Twice per second
On-Target Indication: Target (Bullseye) on lower left of display
Operating Distance: Range: 1 inch [25.4 mm] to 3 feet [0.9 m] for LCD
models and up to 15 feet [4.6 m] for Laser equipped
models from leading edge of reflective tape
Angle: Up to 45° from perpendicular to leading
edge of reflective tape
Power-On Switch: Pistol grip trigger - may be locked on with latching
push-button for longer duration measurements
Auto hold of last measurement for 90 seconds
Optical System: Visible light source - incandescent lamp or laser
WARNING: Do not view the laser beam
AVOID EXPOSURE
LASER RADIATION IS EMITTED
FROM THIS APERTURE
LASER RADIATION
AVOID DIRECT EYE EXPOSURE
PEAK POWER
WAVELENGTH
CLASS IIIA LASER PRODUCT
3mw
650nm
Time Base: Crystal controlled
Power Source: 4 “AA” batteries; Recharger socket provided for
optional rechargeable batteries
Recharger Input: Max input 7.8 Vdc @ 50mA
Temperature: 41 °F [5 °C] to 104 °F [40 °C]
directly as it could be
hazardous to the eyes. Do not
point the laser beam into
another person’s eyes. Do not
view the laser beam with
telescopic devices.
OPTIONS AND ACCESSORIES
ROS-5P* Remote Optical Sensor with 8 foot [2.4 m] cable and
mounting bracket
EC-25P 25 foot [7.6 m] extension cable for remote sensors with
male/female 1/8 inch [3.2 mm] phone plug connectors
R-5B Recharger, 115 Vac - 50-60 Hz, with 4 “AA” NiCad
batteries
R-6B Recharger, 230 Vac - 50-60 Hz, with 4 “AA” NiCad
batteries
B-4 Four “AA” rechargeable NiCad batteries
CC-1 Nylon Padded Carrying Case
CC-2 Plastic Latching Carrying Case
T-5 Reflective Tape - 5 foot [1.5 m] roll, ½ inch [12.7 mm]
wide
CAL-NIST N.I.S.T. Traceable Certificate of Calibration
*NOTE: Sensors are available with other cable lengths of 15, 30, 50 or 100
feet [4.6, 9.1, 15.2 or 30.5 m]
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BATTERIES
The Tachometer operates from four ‘AA’ size batteries which are located
under the hinged top of the instrument. To access these batteries, grip the
tapered cover at the optical lens end of the instrument and pull up. The
cover is hinged at the display end of the instrument and pivots fully out of
the way. It may also be convenient to keep a spare supply of reflective tape
in the free area underneath this cover.
The instrument will provide six to eight hours of continuous operation on a
single set of batteries, depending on the type used. The instrument is
provided with a built-in charging network, which works in conjunction with
the optional NiCad batteries. The optional recharger plugs into the single
jack located next to the optical lens at the front end of the instrument.
Fourteen to sixteen hours is required for a complete recharge. When the
battery voltage in the Phasar-Tach is getting low, the display will blink
“LO BAT” to indicate that the batteries need to be replaced.
NOTE: Only use model R-5B (115 Vac) or R-6B (230 Vac) rechargers
with NiCad batteries. Do not attempt to charge non-rechargeable
batteries.
ALWAYS DISPOSE OF BATTERIES IN A SAFE AND RESPONSIBLE
MANNER.
CLEANING
To clean the instrument, wipe with a damp cloth using mild soapy solution.
Humidity: Maximum relative humidity 80% for temperature
up to 88 °F [31 °C] decreasing linearly to 50%
relative humidity at 104 °F [40 °C]
Dimensions (LxWxH):6.13” x 3.25” x 1.75 “ plus 4.75” handle
[155.7 mm x 82.6 mm x 44.5 mm x 120.7 mm]
Weight: 1.25 lbs [0.57 kg]
OVERVIEW
Each Phasar-Tach model combines the accuracy and safety of a non-contact
optical tachometer with the convenience and ease of operation of a pistol
grip instrument. The instrument provides non-contact measurement of
rotational speed to an accuracy of .01% of reading. It reads RPM directly to
the nearest RPM, and a ‘on-target’ indicator is provided to verify the
instrument is properly aligned on a target and receiving valid information.
OPERATION
The Tachometer measures rotational speed from a single pulse per revolution.
This pulse is supplied by marking the rotating shaft with reflective tape in
an easily accessible location. The Tachometer is equipped with a built-in
incandescent or laser light source providing a beam which is aimed at the
reflective tape located on the rotating shaft. The pulse from the reflective
tape is received back through a single lens reflex optical system and detected
by a photocell inside the instrument. The Tachometer then computes the
rotational speed and displays it to a resolution of 1 RPM.
To operate the Phasar-Tach, simply aim it at the reflective tape while
holding it at a distance of 1 inch [25.4 mm] to 3 feet [0.9 m] for incandescent
lamp units or up to 15 feet [4.6 m] for laser units (observe laser safety
precautions). Squeeze the pistol grip trigger, and read the indicated speed.
The on-target indicator must be on. The display is updated twice per
second.
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For longer duration measurements, the trigger latch on the side of the pistol
grip handle can be depressed after pulling the trigger, and the instrument
may be mounted on the 1/4-20 threaded bushing at the base of the handle.
When the trigger is released, the Tachometer will hold the last measurement
taken and display it for up 90 seconds.
On very small shafts, the Phasar-Tach will work down to a reflective tape
size of approximately 1/8 inch [3.2 mm] square. However, with this small
tape size, it would be necessary to operate the instrument very close to the
rotating shaft and insure it is held steady. For normal operation, a tape size
of approximately 1/2 inch [12.7 mm] square or larger is recommended, and
on very large diameter shafts or for very high-speed applications, a larger
size piece of tape may be required. It is also recommended that the reflective
tape be viewed just slightly off the perpendicular. The Tachometer will
operate at angles from 0 to 45 degrees, but best results are obtained by
aiming the instrument at the reflective tape at approximately a 10 to 20
degree angle. This insures that only pulses from the reflective tape are
received by the tachometer and minimizes the problem of interference from
a highly polished surface or varying ambient lighting.
USING THE PHASAR-TACH WITH AN REMOTE OPTICAL
SENSOR (ROS-5P)
The -R version of the tachometer has a provision for using the optional
ROS-5P Remote Optical Sensor. In addition to the standard built-in optics,
a 1/8 inch [3.5 mm] phone plug is provided on the front panel to accept an
ROS-5P Remote Optical Sensor. A toggle switch on the optics panel selects
internal or remote operation.
For applications requiring the ROS-5P Remote Optical Sensor, move the
Remote/Internal switch to the remote position to disable the internal optics
of the Tachometer. When the trigger is pulled or latched, the ROS-5P
Remote Optical Sensor can be used for measurements. The ROS-5P operates
3 feet [0.9 m] and ±45° from the reflective tape.
NOTE: The standard ROS-5P cable length is 8 feet [2.4 m]. Longer cables
up to 100 feet [30.5 m] are available.
Remote/Internal
Switch
Internal Optics
Lens
Figure 1 Phasar-Tach LCD-R
with Optional Remote Sensor (ROS-5P)
Recharger Jack
CALIBRATION AND SELF-TEST
The Tachometer is a crystal controlled digital instrument that requires no
calibration. However, the accuracy of the instrument can be checked at any
time by aiming it at an old style fluorescent light and observing 7200 ±2
RPM. In countries with 50 Hz. power line frequency, the display will read
6000 ±2 RPM.
NOTE: The Tachometer will not read on energy-efficient fluorescent lights.
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