Seametrics PX12 User Manual download pdf

PX12 Percentag e Timer

Instructions

PUB 19130-1000

Page 1 of 2

General Information

The PX12 is an on-time/off-time timer which cycles

continuously. It is designed primarily for water treat-

ment applications, and is used most commonly with

metering pumps and other fluid handling devices.

Housed in a splashproof non-metallic enclosure, it can

be mounted on a wall or inside a panel. Time setting is

digital, by DIP switches under the clear front cover. On-

time and off-time are set independently, giving a mini-

mum cycle of two seconds and a maximum of over

four hours.

Specifications

Power 115 VAC

On Time Range 1 second - 127 minutes

Off Time Range 1 second - 127 minutes

Minimum Increment

1-127 seconds one second

127 seconds + one minute

Enclosure Polycarbonate, glass filled,

5x5"

Relays 5 Amp res., 1/4 HP ind.

Installation

Mounting. To gain access to the mounting screw holes,

remove the front clear cover. Mounting screw holes

are at the four corners, under the cover screws. Mark

centers of these holes, then drill. Finally, insert the

screws through the corner holes and tighten.

Terminal Access. It is not normally necessary to ac-

cess terminals, since all connections can be made ex-

ternally. However, conduit connection requires the front

plate to be removed to reach the terminals. See con-

nections diagram.

Connect the load. On standard units, a short pigtail

cord with receptacle is provided for connection of a 115

VAC load. The pigtail can be removed and the unit can

be hard-wired if necessary. Remove the front panel

and consult the Connections diagram for the proper

terminals.

Connect Powe r. A power cord is provided for plug-

ging in to any grounded outlet. See Connections dia-

gram if conduit connection is necessary.

Outpu tIndicator

Outpu ttest

but ton

Timeon

sett ingswitches

Timeoff

sett ingswitches

Powerswitch

andind icator

Coverscrews

andboxmoun ting

scre wholes

Powerinpu tcord

(6’leng th)

Timeroutp ut

cor d(7"leng th)

Internal5Amp

replaceab lefuse

behi ndpanel

OFF ON

TEST

Output

PX12

PERCENTAGETIMER

Timeonequalsthe

sumofthe

switche sturne d"ON".

Timeoffequal sthe

sumofthe

switche sturne d"ON".

Thisswitch

"OFF"tim einseconds

"ON"tim einminutes

Thisswitch

"OFF"tim einseconds

"ON"tim einminutes

OFF ON

Inc. Kent, WA

Features

DISCONTINUED

1 2

DISCONTINUED 1

Summary of Contents

Page 1 - DISCONTINUED

PX12 Percentag e TimerInstructionsPUB 19130-1000Page 1 of 2General InformationThe PX12 is an on-time/off-time timer which cyclescontinuously. It is d

Page 2

SettingThe DIP switches under the front clear cover are usedto set on-time and off-time. As the front plate states,the setting is the sum of numbered

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