Monarch Instrument Pocket-Tach Plus Kit h Plus Kit - Manual (Page 8)

flush against the POCKET-TACH so that the fasteners fit into the two locating holes on
the underside of the POCKET-TACH. Secure the tip assembly by pushing firmly on both
of the Nylatch
 fasteners until they snap securely in place. Select either a convex or
concave tip appropriate for the measurement to be made and install it firmly on the shaft
extension of the CTA-2P. Note that the shaft has a flat surface on it which must align
with the flat in the rubber tips. The convex (conical) tip is used for moderate to larger
diameter shafts that are equipped with a turned center, while the concave (inverted
conical) tip is used on smaller diameter shafts. To make a measurement, start the
equipment and carefully move the contact tip against the end of the rotating shaft.
KEEP THE HAND HOLDING THE INSTRUMENT WELL BEHIND THE BACK EDGE OF
THE CONTACT TIP ASSEMBLY. Only a moderate amount of pressure is required to
keep the rubber tip in contact with the rotating shaft. Depress the middle button and
hold the instrument in position until the reading is complete. Once again, the on target
indicator or “bull’s eye” symbol will be your indication of reliable data being received.
When the measurement is complete, release the middle button while still in contact with
the shaft, remove the instrument from contact with the shaft, and POCKET-TACH will
retain the last reading for approximately 90 seconds then automatically shut off. To
disassemble the Contact Tip Assembly, pull the grip of each of the Nylatch
 fasteners
to release them from the back of POCKET-TACH, and remove the Contact Tip Assembly
by gently pulling it from the back of the instrument.
WARNING
MAKING MEASUREMENTS IN DIRECT CONTACT WITH ROTATING
EQUIPMENT CAN BE DANGEROUS. KEEP ALL LOOSE CLOTHING
AND HAIR AWAY FROM EXPOSED MOVING MACHINERY. KEEP THE
HAND HOLDING THE INSTRUMENT WELL BEHIND THE BACK END
OF THE CONTACT TIP ASSEMBLY. PROPERLY REPLACE ALL MACHINERY GUARDS
AFTER COMPLETING MEASUREMENT. DO NOT USE FOR ROTATION GREATER
THAN 20,000 RPM.
5. SURFACE SPEED MEASUREMENTS - Select “RATE” mode for linear contact
value.
Surface speed measurements are made with the CTA-2P Contact Tip Assembly and
the Linear Speed Wheel. Install the Contact Tip Assembly on the POCKET-TACH as
described previously. The Linear Speed Wheel must be pushed right back onto the
shaft, aligning the flats. Secure the Linear Speed Wheel in position by tightening the
small machine screw on the neck of the wheel.
14. BATTERY
The POCKET-TACH is powered from a single NEDA Type 1604 (PM9) nine volt dc
alkaline battery. The battery is installed by removing the sliding cover from the back of
the instrument, connecting the battery to the battery snap, and installing the battery into
the compartment with leads arranged so that they will not be damaged when replacing the
battery compartment cover.
When the battery voltage in POCKET-TACH is getting low, the display will blink on and off
to indicate this condition. At the time the low battery indication comes on, POCKET-TACH
should operate another fifteen minutes.
15. CLEANING
To clean the instrument, wipe with a damp cloth using mild soapy solution.
16. OPTIONS AND ACCESSORIES
CC-5 Latching Carrying Case with space for POCKET-TACH and all
accessories
CC-6 Nylon Padded Carrying Case
CTA-2P Contact Tip Assembly with convex and concave tips and .1
meter Contact Wheel for POCKET-TACH Plus KIT only.
CT-.1M 0.1 meter Linear Contact Wheel
CT-TIPS One CT-2P Conical Tip and one CT-3C Concave Tip, one “ O ”
ring (Part # 9088 ) for linear contact wheel
and two Nylatch Fastners ( Part # 9083, 9084).
ROS-9P Remote Optical Sensor with 5 foot (1.5M) cable
T-5 Reflective Tape, 5 foot (1.5M) roll, 1/2 inch (13mm) wide
CAL-N.I.S.T. N.I.S.T.Traceable Certificate of Calibration
Optical RPM mode of operation only.