Tegam 110A Instruction Manual

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110A

Safety Voltmeter

MODEL 110A

Instruction Manual

PN# 110A-901-01E

Publication Date: January 2018

REV. F

NOTE: This User’s Manual was as current as possible when this product was manufac tured. However ,
products are constantly being update d and improved. To ensure you have the latest documentation,
refer to www.tegam.com

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110A

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TABLE OF CONTENTS

TABLE OF CONTENTS

1

INSTRUMENT DE

SCRIPT

IO

N

INTR

ODUCTION ...................................................... 1-1

SPECIFICATIONS .................................................... 1-

2

ACCESSORIES SHEET ................................................. 1-4

2

PREPARATION FOR USE

UNPACKING AND INSPECTION

................................. 2-1

PREPARATION FOR USE

............................................ 2-

1

OPERATION ........................................................... 2-1

OPERATING CONDITIONS ........................................ 2-2

FRONT PANEL ........................................................ 2-3

3

SAFETY AND MAINTENANCE

SAFETY SYMBOLS AND TERMS

................................. 3-1

OPTIONAL SAFETY TESTS ........................................ 3-3

MAINTENANCE INFORMATION .................................. 3-5

Test Lead Replacement ..................................... 3-5

FUNCTIONALITY CHECKS ........................................ 3-6

PERFORMANCE VERIFICATION ................................. 3-7

BATTERY INSTALLATION/REPLACEMENT .................... 3-8

CLEANING INSTRUCTIONS ...................................... 3-9

4

SERVICE INFORMATION

PREPARATION FOR CALIBRATION OR REPAIR ............ 4-1

EXPEDITE REPAIR & CALIBRATION FORM ................... 4-2

WARRANTY ............................................................ 4-3

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1-1

INSTRUMENT DESCRIPTION

SECTION 1

INSTRUMENT DESCRIPTION

INTRODUCTION

The Model 110A Safety Voltmeter is the only single switch,
single range, digital voltmeter that automatically measures
AC & DC volts to 1000 V for voltage troubleshooting, line
clearing, lock out/tag out procedures and anywhere
hazardous voltages may be present. The 110A has a 1 MΩ
current limiting resistor in each lead to protect the user
against arc-flash potential.

Model 110A meets Category IV 600 V and Category III 1000
V Overvoltage protection under IEC-61010-1.

SPECIFICATIONS

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INSTRUMENT DESCRIPTION

FUNCTIONS: VDC/VAC, with automatic selection. When both DC
and AC input voltages are present, the voltage type with the higher
magnitude is selected and displayed.

RANGES: ±1000 VDC . 1000 VAC (45-500 Hz, average responding,
calibrated in RMS of a sine wave).

RESOLUTION: 1 V
ACCURACY: ±(0.2% rdg + 1 volt), DC, 50-60 Hz, 64 to 82 °F.
MAXIMUM ALLOWABLE INPUT: 1000 volts continuous. Overload

annunciator (OL) turns on above 999 volts.
OVERVOLTAGE TEST: High Pot tested at 2500 VAC for < 5 sec.
NORMAL MODE REJECTION: AC Rejection (VDC Mode): > 40 dB.

DC Rejection (VA C Mode): 40 dB typ. (for DC voltage < 10% peak
AC voltage).

READING RATE: 2.5 readings/second
INPUT RESISTANCE: 10 MΩ (8 MΩ in volt meter, 1 MΩ i n each

attached input probe)
DISPLAY: 0.5” LCD (3 ½ digits), polarity, and annunciators for

VAC, VDC, OL, Low Battery.
INPUT PROBES: Permanently attached to vol tmeter. S heathed tips

with retracting sleeves. PVC insulated leads, 36” long.

POWER: 9 V alkaline or carbon-zinc battery (NEDA 1604).
BATTERY LIFE: 200 hours typical, alkaline.

ENVIRONMENTAL LIMITS FOR OPERATING: –10 to 150 °F, less

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1-3

INSTRUMENT DESCRIPTION

than 80% R.H. up to 95 °F. Reduce R.H. li mit by 1.7% per °F abov e
95 °F.

ENVIRONMENTAL LIMITS FOR STORAGE: –30 to 150 °F, less
than 90% R.H. up to 95 °F. Reduce R H limit by 1.7% per °F above
95 °F.

ENVIRONMENTAL/TIME LIMITS TO ACCURACY: 64° to 82 °F,
80% R.H., 1 year.

TEMPERATURE COEFFICIENT: From 64 °F to 82 °F; included in
accuracy specifications. Below 64 °F and above 82 °F; less than

0.05 times applicable specifications per °F.
LOW-BATTERY INDICATOR: Display indicates ‘BAT’ when less

than 10% of life remains.
AUTOMATIC TURN-OFF: Voltmeter turns off after 10 minutes of

operation. Turns off below 6.5 V battery voltage.

SIZE: 6.3” x 2.7” x 1.2”
WEIGHT: 12 oz.
CONSTRUCTION: Heavy-duty ABS plastic housing.
INCLUDED ACCESSORIES: Battery, Operating Instructions.

ACCESSORIES SHEET

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1-4

INSTRUMENT DESCRIPTION

1104 - Leather Utilit y Belt Carrying Case

The 1104 case protects your voltmeter and probes from broken

displays and other damages that can occur. This case has a 2 in. belt
loop. It is long lasting, super durable, and is made from top-grain
cowhide with riveted sea ms .

1204 - Cordura Nylon lineman’s Carrying Cas e

The 1204 case prote cts your voltme ter and saves you time beca use th e
meter can stay in the case during use. It features a window to access
the ON/OFF switch, a ret ainer that holds the meter in place, spac e for
probe storage and a 22 in. shoulder strap. It also comes with a belt clip
and can be worn on a utility belt. Size- 5 ½ x 7

½ x 1 ½ in. (W x H x

D).

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INSTRUMENT DESCRIPTION

12501 - Alligator Clip Adapter

The 12501 probe adapter kit allows you to convert your test leads to
alligator clips. The kit includes two screw-on probe adapters and two
heavy duty screw in alligator clips with insulating rubber boots. These
alligator clips open to ½ in. and fit most ter minals and bus bars.

12502 - Universal Adapter Kit

The 12502 probe adapt er kit includ es two screw -on probe adapters and
interchangeable screw-in accessories including two alligator clips with
insulating rubber boots, two banana plugs, two needle tips, two spade

lugs and two heavy duty tips. With this kit you can adapt your

voltmeter to the many different situations you encounter on the job.

PN 110-404

Replacement probe/test-lead set (1 red, 1 black) for Model 110A.

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2-1

PREPARATION FOR USE

SECTION 2

PREPARATION FOR USE

UNPACKING AND INSPECTION

Each instrument is inspected both mechanically and electrically
before shipment. Upon receiving your instrument unpack all items
from the shipping container and check for any obvi ous damage that
may have occurred during transit. Report any damage to the
shipping agent. Retain and use the original packing materials if

reshipment is necessary.

PREPARATION FOR U SE

Each instrument is supplied with a 9 V battery. See page 3-8 of thi s
manual for battery installation instructions.

OPERATION

The Model 110A digital voltmeter (DVM) is easy to use. There is
only one control (located on the side of the instrument) that turns
the instrument ON/OFF (Figure 1).

After turn-on, the instrument automatically selects either VDC or
VAC function. VDC is selected if the magnitude of a DC input
voltage is greater than the peak value of any AC voltage present.
Otherwise the VAC function is enabled. VAC and VDC annunciators
in the liquid crystal display indicate the selected function. Observe

the maximum allowable input (1000 V continuous).

After approximately 10 minutes, the voltmeter turns off
automatically to conserve battery life. To turn the voltmeter on