Line Loop Tester
Available with Field Replaceable Switches
Simpson’s Model 8455 Line Loop tester detects line shorts, opens and multiple
ringers, DC voltages and loop resistance. It can measure DC voltage up to 100 volts
and loop resistance to 2 megohms. A front panel “reverse polarity” switch allows
changing polarity positions quicker and easier than manually switching test leads
when making line checks. This switch is field-replaceable, enabling your loop tester
to be operational at all times without costly shop repairs. The compact durable
construction of this tester ensures continued accuracy even under the most rugged
field conditions.
•
Field Replaceable Switches
- Allows operator to get back to the job quickly
with less downtime. The replacement toggles or push buttons can be kept in
the truck and replaced on site, keeping the unit in service, at all times.
•
Designed for Telecom Applications
- Accurately checks line shorts, opens
and multiple ringers.
•
Wide Measuring Range
- Measures DC voltage 0-100V and resistance R x 1,
R ÷ 10.
•
Shorter Testing Time
- Polarity toggle switch eliminates manually switching
test leads when conducting line checks.
•
Rugged for Field Use
- Durable, compact (5-1/2" x 2-3/8") construction
makes it portable, easy to store and rugged.
•
Accurate, Finer Readings
- 0-100 points scale calibration yields accurate
readings.
RESISTANCE
Model
Range
Center Value
Accuracy
Open Circuit Voltage (nom)
Short Circuit Current (nom)
45V
450 A
Rx1
100K
Standard
R 10
10K
2 of arc
45V
4.5mA
Points
50 points
2 of full scale
N/A
N/A
Low Ohms
Low ohms
500
2 of arc
1.2V
2.4mA
Model No. 8455
Specifications
DC Voltage:
Range: 100V
Sensitivity: Model 8455, 1K per volt
Model 8455 A, 3333 per volt
Isolation:
100V DC max. circuit to earth ground
Overload Protection:
10mA/250V fuse on all ranges
Temperature Coefficient:
(57
O
F to 97
O
F): ±2% F.S. (VDC)
Battery Type:
(1) Eveready #455 (45V); Catalog Number 06-113313
Physical:
Dimensions: 5.5" (H) x 3.6" (W) x 2.4” (D), (14 x 9 x 6 cm.)
Weight: 1 lb. (0.5 Kg.)
Specifications subject to change without notice.
Ordering Information
MODEL 8455 LINE LOOP TESTER
Catalog No.
40000
Yes
No
Catalog No.
40001
Yes
No
MODEL 8455A LINE LOOP TESTER (Low Ohms Version)
Catalog No.
40010
Yes
Field Rep. Switch
No
Low Ohms
Catalog No.
40002
Yes
Yes
Catalog No.
40009
Yes
Yes
Catalog No.
40011
Yes
Yes
Field Rep. Switch
Low Ohms
Case
Leads
Battery
Manual
Case
Leads
10 Pk. Replaceable
Switches-toggle
10 Pk. Replaceable
Switches-Push Button
No
No
No
No
00836
45001
45025
45026
ACCESSORIES INCLUDED
Yes
Yes
Case
Yes
Yes
Leads
No
Yes
Battery
No
Yes
Manual
OPTIONAL ACCESSORIES (RECOMMENDED)
00836
00836
Case
45001
45001
Leads
45025
45025
10 Pk. Replaceable
Switches-toggle
45026
45026
10 Pk. Replaceable
Switches-Push Button
Yes
Yes
No
No
00836
45001
45025
45026
No
No
No
No
00836
45001
45025
45026
Yes
Yes
Yes
Yes
00836
45001
45025
45026
rev_1 11/2/04
Line Loop Tester
Field Replaceable Switches Save Time - Save Money
Simpson's FIELD REPLACEABLE SWITCHES - replace
broken switches in less time than it takes to
complete a field report or repair paper work.
Simpson uses the best toggle switches, with pinned
toggles for longer life.
The pictorial steps to the left illustrate the simplicity
of replacing a toggle switch. (Complete detailed
replacement instructions are provided in both the
8455 and 8455A operator's manuals.)
Remove the test leads and 4 screws located near the
meter face from the 8455A’s front cover.
Model 8455A Low Ohms Version . . .
includes all the features of the 8455. Select the low ohms
model if measuring electrical resistance over short lines (for
example, in city and suburban locations).
Test Leads for 8455 and 8455A
Model No. 45001
Consists of one each, red and black, flexible test leads,
6 ft. long with Telco clips at one end and ring-tongue
connectors at the other end for connection to the
Instrument’s screw terminals
Detach the mounting nut from the defective toggle
switch.
45001
Protection for 8455 & 8455A
Simpson’s foam padded, nylon water repellent case, (Model No.
00836) protects the 8455 or 8455A both in storage and during
transport. Use either the case handle or adjustable nylon strap for
easy carrying. The neck strap frees both hands for making
measurements. The case. made of nylon mesh with an extremely
dense weave and water repellent backing, safely protects unit from
inclement conditions. Foam padding on sides, top and bottom
safeguards unit from damage. A convenient pocket stores leads while
they are attached to the instrument.
Unplug the worn cut or broken switches and plug in a
new one! Total time under 5 minutes.
Push-button style switches also available.
00836
rev_1 11/2/04
Embedded System
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