Dynalab SPD-100 Use and care manual

3211 Fruitland Ave
Los Angeles, CA 90058
SPD-100 & SPD-100L
SIGNAL-POWERED
TACHOMETER
Calibration Manual
Rev. B
P/N: 145F-12040
PCO –00010648
(c) Copyright 2017, Barksdale, Inc.
All Rights Reserved
REVISED: AUG 16, 2017
IMPORTANT –PLEASE READ BEFORE
PROCEEDING!
The Dynalco SPD-100 & SPD-100L Tachometers are
designed for reliable and rugged operation. These
products have been designed and tested to meet the
demands required in many industrial locations.
Performance of this product is directly related to the
quality of the installation and knowledge of the user in
operating and maintaining the instrument. To ensure
continued operation to the design specifications,
personnel should read this manual thoroughly before
proceeding with installation, operation and maintenance
of this instrument. If this product is used in a manner not
specified by Dynalco, the protection provided by it may be
impaired.
Dynalco® is a Barksdale® brand.
WARNING
Failure to follow proper instructions may cause any one of the
following situations to occur: Loss of life; personal injury;
property damage; damage to this instrument; and warranty
invalidation.
For clarification of instructions in this manual or assistance
with your application, contact Dynalco as below:
Tech Support: [e-mail]
or 1-866-227-8528
Customer Care: Sales-Dy[email protected]
or 1-800-835-1060
Or by mail:
Barksdale Inc.
Barksdale® and Dynalco® Products
3211 Fruitland Ave
Los Angeles, CA 90058
Follow all warnings, cautions, and instructions marked on and
supplied with the product.
Use only qualified personnel to install, operate, program and
maintain the product.
Educate your personnel in the proper installation, operation,
and maintenance of the product.
Install/calibrate equipment as specified in the
installation/calibration section of this manual. Follow
appropriate local and national codes. Only connect the product
to power sources and end devices specified in this instruction
manual.
Any repair is only to be performed by Dynalco using factory
documented components. Tampering or unauthorized
substitution of parts and procedures can affect the
performance and cause unsafe operation of your process.
All equipment doors must be closed and protective covers
must be in place unless qualified personnel are performing
maintenance.

Calibration Instructions
The SPD-100 and SPD-100L tachometers are normally factory-
calibrated to the customer-specified number of sensing teeth or
discontinuities, sensing speed, and desired numerical display.
If necessary, refer calculation procedure below to
Calculate Signal Frequency and Gate Time.
To calibrate an SPD-100 or SPD-100L
1. Remove the sealing plug on the back of the housing.
2. Apply the calculated signal frequency to terminals 1 and 2.
A Dynalco F-16 or F-15 signal generator is ideal.
3. Select the appropriate gate time range on the 4-position switch.
See label on back of SPD-100 or SPD-100L; or refer Item 3.
4. Adjust the vernier potentiometer for the desired display.
See below.
Example: If 3390 Hz = 1800 RPM, then gate time is 0.53 seconds.
1. Apply 3390 Hz to terminals 1 and 2 on tachometer (no polarity).
2. Turn the gate time range switch to (either) position number 1 to
select gate time range of 0.26–0.72 seconds.
3. Adjust the vernier potentiometer to obtain a display of 1800.
See label on back of SPD-100, SPD-100L for additional
information
1. Calculating Signal Frequency (in Hz)
Multiply RPM times the number of teeth (or discontinuities), then
divide by 60. For example, sensing a ring gear with 113 teeth
rotating at 1800 RPM gives a frequency of 3390 Hz.
Signal Frequency inHz = (RPM) x (Teeth or Discontinuities)
60
Signal Frequency in Hz = ((1800 RPM) x (113 Teeth) = 3390 Hz
60
2. Calculating Gate Time (In seconds)
Divide the number to be displayed on the SPD-100 or SPD-
100L by the corresponding signal frequency.
Gate Time = 1800 RPM = 0.53 seconds
3390 Hz
3. Gate Time Range Selection on 4-Position Switch
Select either position for each number pair on the switch:
z Position 1: 0.26–0.72 sec. Position 2: 0.72–1.43sec.
Position 3: 1.43–2.85 sec. Position 4: 2.85–5.70sec.
Optional Calibration Method: On-engine
A. Select the appropriate gate time range on the 4-position
switch.
B. Connect the magnetic pickup output to terminals 1 & 2.
C. Adjust vernier potentiometer on SPD-100 or SPD-100L
until its display agrees with another precise digital
tachometer.
OUTLINE AND CONNECTION DRAWING
SPD-100, SPD-100L, F-15, and F-16 are trademarks of Dynalco Controls.
DYNALCO RESERVES THE RIGHT TO CHANGE THESE SPECIFICATIONS WITHOUT
NOTICE
Barksdale Inc.
Barksdale and Dynalco Products
3211 Fruitland Ave
Los Angeles, CA 90058
www.dynalco.com
www.barksdale.com