Seametrics PT35 Instructions

General Information
The PT34 and PT35 digital counter-timers are designed
to be used with SeaMetrics (or similar) meters and flow
sensors which produce a pulse signal. They are typically
used in water treatment and chemical dosing applica-
tions, most often in cooling towers and boilers. The first
function of these units is the accumulator, which counts
pulses from the meter. When a preset number has been
reached, output power turns on for a set time, and then
the cycle repeats.
For applications requiring dual timers (typically, one
chemical feed and one water bleed) the PT35 has dual
accumulators and timers. Input is from a single meter or
flow sensor, but the accumulators and timers are set in-
dependently of each other. A sequential function can be
selected to lock one timer out while the other is operat-
ing. This prevents feed and bleed from occurring simul-
taneously.
A 12 VDC low-current meter loop is standard. This can
be used with dry contact meters, as well as contacting-
head meters with solid-state pickups (SeaMetrics ME
meters) or insertion flow sensors (SeaMetrics IP line).
BRIGHT LED DISPLAY
+ visible in low light
EASY-OFF COVER
SETTING KNOB
+ increase clockwise
+ decrease counter-clockwise
METER INPUT CONNECTOR
PT34 Single Pulse Timer
PT35 Dual Pulse Timer
Instructions
Specifications
Power
Sensor Power
Enclosure
Accumulator Range
Timer Range
Maximum Input Frequency
Relay Contact Rating
Temperature
115 VAC
12 VDC
5" x 7" polycarbonate
1 - 9,999 pulses
1 - 9,999 seconds
1000 Hz
5 A resistive @ 115
VAC, or 1/4 HP
32º-130º F (0º-55º Cº)
INPUT INDICATOR LIGHT
TEST BUTTONS
FORCE ONE
TIMED OUTPUT
PRE-WIRED OUTPUTS
AND POWER CORD
LT-10018-A
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