Protectowire APL-90 Quick Start Manual

THE PROTECTOWIRE CO. INC.
40 Grissom Road, Plymouth MA 02360
781-826-3878 FAX 781-826-2045
PROTECTOWIRE ALARM POINT LOCATOR
CONTENTS

1. GENERAL....................................... 1

2. DESCRIPTION............................... 1
3. OPERATION...................................
4. CALIBRATION CHECK...................
CALIBRATION PROCEDURE.........
5.
6. SELECT UNIT OF MEASURE.........
1. GENERAL
1.01
This Protectowire Alarm Point Locator
Adapter Model APL-90 is manufactured by
The Protectowire Co. Inc. (See Figure 1 & 6)
1.02 The Meter Adapter was designed to convert
a digital multimeter (with a 200 millivolt scale
to a Protectowire Alarm Point Locator Meter.
(See Figure 2)
A Protectowire Alarm Point Locator Meter
1.03
identifies the location of the heat actuated
(shorted) spot on the Protectowire linear heat
detector. (See Figures 3 & 4)

2. DESCRIPTION

The Meter Adapter Model APL-90 is housed in a high-impact plastic case which measures 3 3/4"
x 2 1/2"x 1", weighs 4 ounces and is powered by (1) 9V NEDA Type 1604 battery with a life of app-
roximately 100 hours. Red and Black 4 foot long test leads with insulated standard size alligator clips
are provided. The unit is equipped with a standard size double banana plug spaced 3/4" apart. This
plug provides the means to connect into a Digital Multimeter. A power ON/OFF slide switch and a power
on L.E.D. indicator are also provided. On the opposite side of the power switch is a calibration check/
test slide switch. A programmable Micro Jumper located inside the adapter (see figure 5) is provided for
selecting either Feet or Meters as the unit of measurement to be digitally displayed.

3. OPERATION

3.01
The Protectowire Meter Adapter contains a signal conditioning circuit that converts a digital multimeter
having a 200 millivolt (mV) scale to an ohmmeter and the digital display scaled to read a count of 1
for every foot (or meter) to be measured from the start of the Protectowire run to the overheated
alarm point on the Protectowire. The max. length of unit measure (Feet or Meters) that can be read
on this mV scale is 1999 feet or meters (disregarding decimal point at all times). For Protectowire
cable runs greater than 1999 (feet only), switch to the 2Vdc scale and multiply digital display by X10.
Feed
FIRE
wires
ALARM
CTRL
ZONE
PNL
FIG. 3 CLASS B DET. CKT. W/METER CONNECTED
MODEL APL-90 METER ADAPTER
PAGE
1-2
2
2
2
Meter
Protectowire
cable
Linear Heat Detector
BOX
X
HEAT ACTUATED SPOT
)
FIGURE 2 ADAPTER CONNECTED TO DIGITAL METER
FIRE
ALARM
CTRL
ELR
PNL
BOX
FIG. 4 CLASS A DET. CKT. W/METER CONNECTED.
Page 1 of 2
FIGURE 1 METER ADAPTER
ADAPTER + METER = PROTECTOWIRE METER
Feed
ZONE
wires
BOX
Linear Heat Detector
+
Loop out
-
-
+ Loop return
HEAT ACTUATED SPOT
DS-8962
ISSUE #1 MAY 1990
REV. B 10/1/07
Digital Multi Meter
(DMM) with a 200mV
scale for X1 rea-
ding and a 2V scale
for X10 reading.
Disregard decimal
point.
Display count represents
distance in feet or
adapter programed to
display count in meters
Protectowire
X