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OPERATOR’S MANUAL
MODEL TS-113
VOLT-OHM-MILLIAMMETER
SIMPSON ELECTRIC COMPANY
Printed in U.S.A.
520 Simpson Avenue, Lac du Flambeau, WI 54538
Edition: 5, 07/07
(715) 588-3311 • FAX (715) 588-3326
Part No. 6-117753_Rev5
WARNING
READ AND UNDERSTAND THIS MANUAL
BEFORE USING THE INSTRUMENT.
Failure to understand and comply with the WARNINGS and
operating instructions can result in serious or fatal injuries and/
or property damage.
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SAFETY SYMBOLS
This Operator’s Manual contains special caution and warning
headings which alert the user to check hazardous operating
and servicing conditions. These headings appear throughout this manual where applicable, and are defined below. To
ensure the safety of operating performance of this instrument,
these instructions must be adhered to.
This WARNING sign denotes a hazard. It
calls attention to a procedure, practice or
WARNING
CAUTION
the like, which if not correctly performed or
adhered to, could result in personal injury.
This WARNING sign denotes a hazard. It
calls attention to a procedure, practice or
the like, which if not correctly performed or
adhered to, could result in personal injury.
WARNING
Notes:
This instrument is designed to prevent accidental shock to
operator when properly used. However, no engineering
design can render safe an instrument which is used carelessely. Therefore, this manual must be read carefully and
completely before making any measurments. Failure to
follow directions can result in serious or fatal accident.
SHOCK HAZARD: As defined in IEC-1010-1 Safety Requirements
for Electrical Equipment for Measurement, Control and Laboratory
Use, a shock hazard shall be considered to exist at any part involving a potential in excess of 30 volts rms (sine wave) or 42.4 volts
DC or peak where a leakage current from that part to ground
exceeds 0.5 MIU (Measurement Indication Units) when measured
with an appropriate instrument as defined in Section 6.3.1.2 Annex
A of IEC-1010-1.
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“ON” time readings in general are taken by reading the values at the upper and
lower extremes of the pointer swing as the coding contact is repeatedly made
and broken, and determining the average or center reading.
“FAST” and “SLOW” positions provide a choice of meter ballistics, and the one
to be selected will be determined by the pulse rate and personal preference. In
the “FAST” position, the center value stabilized quickly, but the spread between
upper and lower readings will be wider, particularly with the low pulse rates. In
the “SLOW” position, time must be allowed for the reading to “settle,” but, except
for the lowest pulse rate, there will be virtually no pointer oscillation, and percent
“ON” time can be read directly from the scale.
5. OPERATOR SERVICING
For safety of the operator, servicing of the TS-113, other than replacement of
batteries or fuses, should be referred to one of the Simpson Authorized Service
Centers.
TABLE OF CONTENTS
1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SUPPLIES AND ACCESSORIES . . . . . . . . . . . . . . . 4
TECHNICAL DATA. . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2. INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
UNPACKING AND INSPECTION. . . . . . . . . . . . . . . . 6
WARRANTY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
SHIPPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
CONTROLS, JACKS AND INDICATORS . . . . . . . . . 7
FRONT PANEL DESCRIPTION. . . . . . . . . . . . . . . . . 7
REPLACEABLE COMPONENTS. . . . . . . . . . . . . . . . 9
3. SAFETY PRECAUTIONS. . . . . . . . . . . . . . . . . . . . . . 9
4. OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
DC CURRENT MEASUREMENTS . . . . . . . . . . . . . 12
AC CURRENT MEASUREMENTS. . . . . . . . . . . . . . 13
PEAK READINGS OF ANY FUNCTION . . . . . . . . . 14
DC OR AC VOLTAGE MEASUREMENTS. . . . . . . . 14
RESISTANCE MEASUREMENTS . . . . . . . . . . . . . . 16
PERCENT “ON” TIME MEASUREMENTS. . . . . . . . 17
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5. OPERATOR SERVICING. . . . . . . . . . . . . . . . . . . . . 18
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1. INTRODUCTION
The Simpson TS-113 Volt-Ohm-Milliammeter (hereafter referred to as the TS113 or the Instrument), is a rugged, reliable instrument which has been designed
specifically for the widest possible range of electrical measurements associated
with the RAILROAD SIGNALING and COMMUNICATIONS field. In construction and general principle it follows closely the proven Simpson pattern which is
based on the experience of many years of successful multimeter manufacture.
Among its special features are provisions for:
Low insertion loss AC current measurements using an internal current transformer.
“ON” time measurement at any rate in excess of 30 pulses per minute.
An adjustable “Pointer Stop” which facilitates observation of “peak” readings of
pulsating voltage or current on coded track.
A current-limiting diode preventing meter movement overload beyond acceptable
limits.
SUPPLIES AND ACCESSORIES
All supplies and accessories required to operate the TS-113 are supplied with
the Instrument and are listed in Table 1.
Table I
Items & Accessories Furnished with Instrument
a. Test first for the presence of an AC or DC voltage. (Refer to Item a. on
page 13) If no voltage is present, proceed with the set up below.
b. Set the range selector to “Rx1” for resistance less than 100W, “Rx100”
for resistance less than 10,000W, or “Rx1K” for higher values. Refer to
Figure 4. Observe correct polarity when checking DC circuit components.
c. Connect leads to “COM(-)” and “+” (V W %) jacks as shown in Fig. 6
d. Short the lead clips.
e. Adjust the “ADJ.OHMS” knob for full scale (0 ohms) Separate leads and
connect to resistance to be measured.
f. Read resistance on the black “OHMS” scale, above the mirror, multiply ing the reading by the factor indicated by the switch setting.
Qty. Description Part No.
1 Carrying Case Black 00834
1 Test Lead Set, Pair of 4' Flexible
Color-Coded Ends with Banana Plug
& Insulated Clip 6-117744
1 Operator’s Manual 6-117753
1 *1.5 Volt D Cell, NEDA 13A, Alkaline
2 *9V NEDA 1604A, Alkaline
1 *2A Fuse,Littelfuse 3AG 2A, or equal.
1 *2A Cartridge fuse (Littelfuse BLS 2 600V or Bussman BBS 2A)
*Batteries and Fuses are standard items from retail store.
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Figure 7. Measuring Percent “On” Time
PERCENT “ON” TIME MEASUREMENTS
a. Set range selector to “FAST” position, and function switch to “DC”
b. Connect black lead to the “ “ (COM) jack and the red lead to the “+” (Ω V
%) jack. See Figures 4 & 5.
c. Press the “Push to Set” button and adjust pointer to 100% on the green
scale using the “ADJ OHMS %” knob.
d. Release button.
e. Set range switch to “FAST” or “SLOW” position (see suggestions below)
and connect leads to coded circuit. Observe correct polarity.
f. Read percent “ON” time on the lowest green (0-100%) scale. The follow
ing suggestions will be helpful:
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RESISTANCE MEASUREMENTS
TECHNICAL DATA
Table 2 lists the technical data for the TS-113.
WARNING
Voltage applied to resistance range will cause reading errors if low and damage
the Instrument if high. When making in-circuit measurements, make certain that
the circuit is completely de-energized before making connections to it.
When making in-circuit measurements, circuit paths in parallel with the resistance being measured may cause reading errors. Check circuit diagrams for the
presence of such components before assuming that the reading obtained is correct.
Branch and distribution circuits (120/240/480V etc.) can deliver dangerous explosive power momentarily into a short circuit before the fuse/breaker opens the circuit. Make absolutely certain that the Instrument switches are set properly, jacks
are connected properly, and that the circuit power is turned off before making
connections to such circuits.
DC RANGES
VOLTAGE CURRENT
0-0.25V 0-15 mA (0.015 A)
0-0.6 V 0-60 mA
0-3 V 0-300 mA
0-15 V 0-1.5 A
0-60 V 0-6 A
0-150V 0-30 A
0-300 V
0-600V
SENSITIVITY INSERTION LOSS (mV drop)
1,000 ohms/volt 250 mV all ranges
ACCURACY: ±2% of full scale (10-100% of range) all ranges except 250mV DC
which is ±1% of full scale.
AC RANGES
VOLTAGE CURRENT
0-3 V
0-15 V
0-60 V 0-6 A
0-150V 0-30 A
0-300 V
0-600V
Figure 6. Resistance Measurements
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SENSITIVITY INSERTION LOSS (60 Hz)
300 ohms/V 250 mV
ACCURACY: ±3% of full scale (20-100% of range) all ranges, pure sine wave.
RESISTANCE RANGES:
R X 1 = 0-100W (6 Ω center)
R X 100 = 0-10,000W (600 Ω center)
R X 1K = 0-100,000W (6000 Ω center)
BATTERY VOLTAGE: 1.5V, 300 mA max.
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ACCURACY: Better than ± 5° of arc on Rx1, and ± 2.5° of arc for Rx100 and
Rx1K range. Some improvement possible by careful zero setting.
PERCENT “ON” TIME RANGE:
0-100%. Effective for 30 pulses per minute or higher. “FAST” and “SLOW” ranges are identical except for meter ballistics.
ACCURACY: ± 2% of full scale (10-60% “ON” time range for 30 pulse rate (0.5
Hz) and approaching 10-100% for 180 pulse rate. (3 Hz))
SIZE:
Width Length Depth
5-1/4" (133.4 mm) 7-1/8" (181 mm) 3" (76.2 mm)
WEIGHT:
2-1/2 lbs. (1.14 kg)
2. INSTALLATION
The following instructions explain the installation and shipping of the TS-113.
Included are unpacking and inspection procedures, warranty, shipping, power
source requirements and operating position.
DC OR AC VOLTAGE MEASURMENTS
a. Set the range selector switch between 0.25DC and 300/600 range as
shown in Fig. 5. When in doubt, first select the highest available range.
b. Set the function switch to “DC” or “AC” as desired.
c. Turn off power in the circuit to be measured.
d. For voltages less than 300V,( Fig. 5) connect the black marked lead
into the “ COM (-)” jack and the red marked lead into the “+” (V W %) jack.
UNPACKING AND INSPECTION
Examine the shipping carton for obvious signs of damage. If damage is noted,
notify the carrier and supplier and do not attempt further use of the instrument.
If Instrument appears to be in good condition, read Operator’s Manual in its
entirety. Become familiar with the Instrument as instructed in the manual, then
proceed to check the electrical performance as soon as possible. Also, check
that all items are included with the instrument (Table 1).
After unpacking the Instrument, a 1.5 V battery and a 9 V battery may be found
in the box with the Instrument and test leads.
WARRANTY
The Simpson Electric Company warranty card is included with each instrument.
Read it carefully prior to requesting any warranty repairs.
NOTE: For assistance of any kind, contact your nearest Authorized Service
Center, or visit www.simpsonelectric.com for a list of Service Centers.
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Figure 5a. Measuring High AC Volts
a. For voltages greater than 300V, (Fig. 5a)connect the black marked lead
into the “ COM (-)” jack and the red marked lead into the “600V AC/DC” jack.
b. Connect the test leads to the circuit to be measured. Observe polarity for
DC measurements (red lead to circuit positive).
c. Apply power. Select a lower range if appropriate.
d. Read volts on either black scale (For DC measurements) below the mir
ror or, using the orange scale. (AC measurements).
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PEAK READINGS OF ANY FUNCTION
SHIPPING
To determine the peak value of a visibly fluctuating reading, slowly rotate the
pointer stop knob clockwise against the pointer until pointer motion can no longer
be detected. The pointer is then indicating the peak value of the energy being
applied.
Figure 5. Measuring DC Volts
WARNING
Pack the Instrument carefully and ship it prepaid and insured to the proper destination.
CONTROLS, JACKS AND INDICATORS
All operating and adjustment controls, jacks and indicator for the TS-113 are
described in the following pages. Become familiar with each item prior to operating the Instrument.
Notes:
Be extremely careful when working with high voltage circuits. Do not touch the
Instrument or test leads while power is on in the circuit being measured. Do not
exceed 600 volts.
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FRONT PANEL DESCRIPTION
The Instrument’s highly legible markings are designed for easy, accurate readings. The 4" red knife-edge pointer and scale mirror, permit improved resolution
of readings and elimination of parallax errors.
The dial itself is color coded to match the range and function switch for ease of
interpretation.
Figure 1. Front Panel
In the lower center of the meter cover is the adjustable pointer stop. The knob is
used in peak reading determination. Travel is limited in both directions. The zero
adjuster below it, rotates freely through 360°
AC CURRENT MEASUREMENTS
Figure 4. Measuring AC Current
a. Set range switch to the orange colored “6/30A /60V” as shown in Fig. 4.
b. Set the function switch to “AC”
c. Connect black marked lead into “AMPS” jack, and the red marked lead into
“6A” or “30A” jack as shown in Fig. 4. (When in doubt, first select the “30A” jack.)
d. Turn off power in the circuit to be measured.
e. Connect the test leads in series with the circuit to be measured (either polarity).
f. Turn on power. If necessary to change range (change jacks), first turn cir cuit power off.
g. Read current value on the blue “ACA” scale using the orange numbers
below the mirror.
h. Turn off circuit power and discharge circuit capacitors, if any, before dis connecting test leads.
Six jacks provide connections for all the twenty seven direct reading ranges.
Twenty one of these ranges are served by the “+” and “–” connections in the
lower left corner of the panel, the remainder by the “AMP” connection and one of
the two jacks( 6A or 30A) on the right hand side, and the 600V jack.
The center knob rotates the range switch smoothly through a full 360°.
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CAUTION
Note: The 6A and 30A connections are unfused. Use
caution when testing these high currents.Do not leave
the unit measuring 30 Amps unattended, or for a long
period of time as contact points can overheat rapidly.
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4. OPERATION
DC CURRENT MEASUREMENTS
Figure 3. Measuring DC Current
a. Set the range selector switch to one of the 4 positions shown in Fig. 3. If
in doubt as to range to be used, first select the highest available range.
b. Set the function switch to “DC”
c. For current less than 1.5Amps, connect red marked lead into the “+”
jack. Connect the black marked lead to the “Com.(-)”
d. For current greater than 1.5 Amps, connect the red marked lead into
either the 30A or 6A jack. Connect the black marked lead into the
“AMPS” jack.
e. Turn off power in the circuit to be measured.
f. Connect test leads in series with the circuit to be measured, with the red
marked(+) lead to the positive side of the opened circuit.
g. Turn on power. If necessary to change jack connections for a more suit
able range, first turn off the power and discharge circuit capacitors, if any.
h. Read DC current on the blue “DC” scales below the mirror, using the
appropriate scales (0-3, 0-6 or 0-15).
i. Turn off circuit power and discharge capacitors, if any, before connect ing test leads.
Note: The range switch position for DC serves the
1.5A, 6 A and 30 A ranges, and the correct jack must
be selected. The 6A and 30A connections are unfused.
CAUTION
Use caution when testing these high currents. Do not
leave the unit measuring 30 Amps unattended, or for a
long period of time as contact points can overheat rapidly.
The panel is marked and color coded to permit easy and accurate selection of
any of its positions. There is a “Transit” position for vibration protection during
travel, and a blank position between ohms and mA to protect against accidentally switching between ranges.
The left knob rotates between 3 positions -DC, DC and AC.
Precise, gradual adjustment of zero ohms is made possible by the right hand
knob . This control is also used to set the 100% reading for “ON” time measurements, when used together with the “Push to Set” switch. With the button
depressed the right hand knob now adjusts the “ON” time full scale.
Figure 2. Rear View (Battery Cover Removed)
REPLACEABLE COMPONENTS
A 1.5 V size D battery powers all resistance-measuring ranges. The low battery
voltage is aimed at preventing the accidental tripping of relays during the measurement of relay circuit resistance.
One 9.0 volt Alkaline battery powers the “ON” time measuring circuit. Other 9.0
volt alkaline powers the Rx 1K circuit.
The glass fuse unclips for fuse replacement.
Note: The rear case must be removed to replace the cartridge fuse. No other
components are replaceable or serviceable by the user.
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3. SAFETY PRECAUTIONS
This section of the manual contains information required to use and operate the
TS-113 in a safe and proper manner.
WARNING
The TS-113 has been designed specifically for use by trained and qualified
personnel working on railway signaling and communications systems. It is not
intended to make measurements in heavy-duty railway equipment such as diesel-electric locomotives, railway cranes or the like. Its ranges, however, are capable of making measurements in circuits in which the available energy levels can
produce dangerous arcing and explosive forces if accidentally short-circuited.
Whenever working on such circuits, the operator must take care to assure that
the meter and its test leads are in good working condition, that the circuit cannot become unexpectedly shorted, that the meter controls are properly set and
test leads correctly connected, and that all safety precautions are observed at all
times.
The following precautions are suggestions and reminders of commonly recognized safe practices and specific hazards to be avoided and are not implied to
be sufficient to ensure the safety of untrained personnel in all circumstances.
Neither is the manual a substitute for technical manuals covering the equipment
in which measurements are to be made. Always refer to the equipment service
manual and its specific warnings and instructions and observe them as well as
those contained herein. Unusual measurements under unusual conditions may
require additional precautions and safety measures.
The TS-113 should only be used by personnel qualified to recognize shock hazards and trained in the safety precautions required to avoid possible injury.
• Always wear safety glasses when working in electrical circuitry.
• Do not work alone on high voltage circuits. Make certain that someone capable
of rendering aid is nearby and watchful.
• Do not handle the Instrument, its test leads, or the circuitry while high voltage
is being applied.
• Do not connect any terminal of this Instrument to a circuit point at which a voltage
exceeding 600 volts AC or 600 volts DC may exist with respect to earth ground.
• Turn off power and discharge any capacitors in the circuit to be measured before
connecting to or disconnecting leads from that circuit.
• Prior to use, check the Instrument, the accessories (if any), and the test leads for
missing, damaged, deteriorated or otherwise faulty insulating parts. Do not use,
or permit the use of, equipment with faulty insulation until it has been properly
repaired.
• Avoid making measurements under humid, damp or other environmental condi-
tions that could reduce the dielectric strength of the test leads or Instrument and
increase the possibility of electrical shock.
• Do not change Instrument switch settings or test lead connections while the cir-
cuit is energized. A mistake could result in damage to the Instrument and pos sible personal injury.
• Locate all voltage sources and accessible current paths before making connec-
tions to circuitry. High voltage may appear unexpectedly or in unexpected loca tions in faulty equipment. An open bleeder resistor, for example, may result in a
capacitor retaining a dangerous charge.
• Make certain that the equipment being worked upon is properly grounded and
fuses are of a proper type and rating.
• Check and double check switch positions and jack connections before applying
power to the Instrument.
• Always remain alert for low voltage circuits which may be floating at high voltage
with respect to earth ground and for composite voltage (AC + DC). Such compos ite voltage must not exceed the Instrument’s rated maximum circuit-to-ground
voltage.
• Do not make electrical measurements where the air may contain explosive con-
centrations of gas or dust.
• When in doubt as to the range to be used, first select the highest range available.
After an initial reading, the range can be changed to one that is more appropriate
to the value indicated.
• This General Purpose VOM is NOT to be used to make electrical measurements
on blasting circuits or blasting caps.
NOTE: The TS-113 is not waterproof and must be sheltered from rain or snow.
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