Monarch Instrument TACH-4AR - Manual (Page 4)

OPERATING DISTANCE AND ANGLE
Measurements can be made up to 36 inches and at angles of up to 45 ° from
the reflective tape (T-5). When measuring shiny surfaces, a 20 ° angle is
recommended. The TACH-4A has exceptional accuracy, and for very low or
very high speed measurements, it is desirable to hold the instrument against
a steady rest, or mount it on a Tripod or bracket using the 1/4 - 20 UNC
mounting bushing on the back side of the instrument. This ensures that
slight hand motion will not influence the time interval between pulses,
giving erroneous readings. For most measurements, it is not necessary to
mount the instrument in this manner. The TACH-4AR with RLS-5P Laser
Sensor can be used up to 50 feet and 45 ° from the reflective tape (T-5).
CHANGING THE MODE
To change the operating mode of the unit, press the MENU button so that
“MENU” is displayed. Pressing the UP ARROW (!) button once will
display the current mode. Keep pressing the UP ARROW (!) button until
the desired mode is displayed. Press the LEFT ARROW (") button to
change an option of that mode, i.e. to select MANUAL or AUTO for the
Timer mode. Finally, press the RECALL (STORE) button to “save” the
new mode. To set the scale factor for Scale or Totalize modes see Setting
the Scale Factor section.
MENU SELECTIONS
Pressing the MENU button causes the word “Menu” to be displayed. Pressing
the UP ARROW (!) button displays the current mode. Pressing the UP
ARROW (!) button again displays the RPM mode. Press the UP
ARROW (!) button again to display the next mode. TEST loops around
back to RPM. Pressing the LEFT ARROW (") button will perform the
function stated in the following table or display the current option setting.
Pressing the LEFT ARROW (") button again allows selection of either of
the two options shown.
Do not forget to Press the RECALL (STORE) button to save the selected
mode or value. Pressing the MENU button returns to the “MENU”
function. Pressing the RESET button returns to the operating mode
without changing the unit.
ACCESSORIES
MODEL DESCRIPTION
ROS-5P Remote Optical Sensor with an 8 foot cable and
a mounting bracket
RLS-5P Remote Laser Sensor with an 8 foot cable and a
mounting bushing on a base Infrared Sensor with
an 8 foot cable
IRS-5P Infrared sensor with an 8 foot cable
MT-190P Magnetic Trigger Sensor/Amplifier with an 8 foot
cable
EC-25P 25 foot extension cable for remote sensors with
male/female 1/8 inch phone plug connectors
R-5B Recharger, 115 Vac - 50/60 Hz, with 4 “AA” Nicad
Batteries
R-6B Recharger, 230Vac - 50/60 Hz, with 4 “AA” Nicad
Batteries
B-4 Four “AA” Rechargeble NiCad Batteries
CC-3 Plastic Latching Carrying Case
T-5 Reflective Tape - 5 foot roll, 0.5 inch wide
T-5WP Waterproof Reflective Tape (honeycomb pattern)
5 foot roll, 1 inch wide
CAL-N.I.S.T N.I.S.T. Traceable Certificate of Calibration and
Re-Calibration