APG Kari Specifications

APG

Kari (KA) Level Float Switch

4.3”

109 mm

2.2”

55 mm

®

6.1”

155 mm

6.70”

170 mm

S (Standard) Series

RoHS

Compliant

Kari cable suspended oat switches are capable of up to four switching levels in a single oat, and oer 25
dierent congurations - including some with built in hysteresis. That means you can replace up to four single level
oat switches with one 4-point level switch. Kari oers high chemical compatibility and durable components built to
outlast any other.

C

Features

• Up to 4 switching levels

• Optional built-in hysteresis

• 25 congurations

• Mercury and Lead free

• High chemical compatibility

• Proven reliability in operation

• Cost eective

5.6”

142.24 mm

3.90”

99 mm

US

Quick Specs

• Max Voltage: 250 VAC or DC

• Temperature: Up to 175°F

• Float Material: Polypropylene

• Cable Material: PVC (standard), Polypropylene,

Rubber, Teon®

• IP67, NEMA 6

• CE, CSA General Purpose

5.1”

130 mm

3.0”

76 mm

M Series C Series

Automation Products Group, Inc. | 888.525.7300 | [e-mail] | www.apgsensors.com

Rev. A, 08/28/2015

APG

The World’s Most Versatile & Reliable
Float Switch

Patented One Float,
Multi-Switch Design

Want to make it easier to work
with oat switches? Want to
avoid tangled oats? Kari oat
switches have up to four switch
points in a single oat.

This simplies installation,
avoids maintenance, and
enhances reliability.

Stop messing around with
tangles of multiple oats and
streamline with Kari and APG.

Unparalleled Reliability

Many report the typical lifespan
of a competitor cable suspended
oat switch to be about four
years. We still have Kari oats in
the eld from 20 years ago.

These workhorses just keep
going, much longer than your
run-of-the-mill oat switch.

You get uninterrupted service
and a much lower cost of
ownership in an easy-to-use
package.

Easy Switch Level
Adjustment

The dierent activation levels
within the oat are easy to
adjust by lengthening the cable
and moving the weight. The
closer the weight to the oat, the
tighter the switching dierential

- or the closer the switching
levels are to each other.

Automation Products Group, Inc. | 888.525.7300 | [e-mail] | www.apgsensors.com

®

Rev. A, 08/28/2015

2

APG

Plug & Play

25 Congurations, Built-In Hysteresis

Kari oat switches come purpose built for a variety of unique
applications with 25 dierent congurations. The diagram below
descibes the function and available size of each model.

Unlike any other oat switch on the market, several models
include built-in hysteresis. The oat handles the logic all by itself

- making them ideal for backup pump control applications and
reducing the need for expensive controllers.

If you can wire a simple switch (and we can help you with that),
then you can achieve complex pump control behavior with a single
Kari oat switch.

Kari Float Switch Models

Type Description

1H High alarm or valve control

1HE

2H Empty pump control

3H

3Y

3HE

3YE

4H

4H5E

4Y

4Y39

1L

1LE

2L

2A

3L

3A

3LE

3AE

4L

4L5E

4A

1C

2HL

Dual high alarm

Empty pump control2Y

Empty pump control + high alarm

Empty pump control + high alarm

Empty pump control + isolated high alarm

Empty pump control + isolated high alarm

Empty pump control + high and low alarm

Duplex empty pump control + isolated high alarm

Empty pump control + high and low alarm

4 level empty pump control

Low alarm or valve control

Dual low alarm or valve control

Fill pump control

Fill pump control

Fill pump control + low alarm

Fill pump control + low alarm

Fill pump control + isolated low alarm

Fill pump control + isolated low alarm

Fill pump control + low and high alarm

Duplex fill pump control + isolated low alarm

Fill pump control + low and high alarm

High or low alarm, change-over switch

High and low alarm

Hysteresis

M

Ø 3 in

Model

C

Ø 3.9 in

S

Ø 6.7 in

Automation Products Group, Inc. | 888.525.7300 | [e-mail] | www.apgsensors.com

®

Rev. A, 08/28/2015

3

APG

White = Contact Open

Empty Control (Form A)

Model Selection Guide

SINGLE LEVEL

TWO LEVEL

THREE LEVEL

Model 1H\C1H\M1H

2 Conductors

1-2

N.O.

Normally

Open

Model 2H\C2H\M2H

2 Conductors

High High

High

Low

Low Low

High High

High

1-2

On

N.O.

Empty Control
(Pump Down)

Model 3H\C3H

3 Conductors

On

1-31-2

Model 1HE\C1HE\M1HE

4 Conductors

1-2

3-4

N.O.N.O.

Dual High

Alarm

Model 2Y\C2Y

2 Conductors

1-31-2

N.O.

N.O.

Empty Control
(Pump Down)

Model 3HE\C3HE

4 Conductors

3-4

1-2

On

Switch or

Fill Level Point

Black =

Contact Closed

Model

Function

Model 3Y\C3Y

4 Conductors

1-31-2 1-4

Number of Wires in Cable

KEY

3 Conductors

1-2

1-3

On

N.C.

N.C.

Fill Control

Low

Alarm

N.C.= Normally Closed
N.O.= Normally Open

Model 3YE

4 Conductors

1-2

Contact
Wire Numbers

Built In Hysteresis

Gold = Typically
Used For Alarms

4-51-3

Low

FOUR LEVEL

Low Low

High High

High

Low

Low Low

N.O.

Empty Control

Model 4H

4 Conductors

1-2

On

N.O.

Empty

Control

N.O.

High

Alarm

1-3

N.C.

High, Low

Alarm

N.O.

N.O.

N.O.

Empty ControlIsolated

High Alarm

Model 4H5E

1-4

5 Conductors

1-31-2

On #2

On #1

N.O.

Duplex

Pump Empty

N.O.

4-5

N.O.

Isolated

High Alarm

N.O.

Empty ControlHigh

Model 4Y

5 Conductors

1-3

1-2

N.O.

N.O.

Empty

Control

Popular Models (marked in blue above)

Model Number Model Description

KA-1H/M1H One switch, NO

KA-2H/M2H Two switch, NO, hysteresis

KA-3HE Three switch, NO, hysteresis, isolated alarm

KA-4H Four switch, NO, hysteresis, hi/low alarms

KA-4HE Four switch, NO, hystesis, duplex control, isolated alarm

N.O.

N.O.

Alarm

1-5

N.O.

High, Low

Alarm

N.C.

N.O.

N.O.

N.O.

Empty ControlIsolated

High Alarm

Model 4Y39

5 Conductors

1-4

1-51-31-4

N.O.

Four Normally Open Switches

N.O.

N.O.

1-2

N.O.

Ideal For

Lift Stations

One long-lasting oat for

complex pump control.

The only smart choice

for oat switches in lift

stations.

Automation Products Group, Inc. | 888.525.7300 | [e-mail] | www.apgsensors.com

®

Rev. A, 08/28/2015

4

APG

SINGLE LEVEL

Fill Control (Form B)

Other

Model 1L\C1L\M1L

2 Conductors

1-2

Model 1LE\C1LE\M1LE

4 Conductors

1-2

3-4

Model 1C\C1C\M1C

3 Conductors

1-3

1-2

Model 2HL\C2HL

3 Conductors

1-2 1-3

TWO LEVEL

THREE LEVEL

N.C.

Normally

Closed

Model 2L\C2L\M2L

2 Conductors

High High

High

Low

Low Low

High High

High

Low

Low Low

1-2

On

N.C.

Fill Control
(Pump Up)

Model 3L\C3L

3 Conductors

1-2

On

N.C.

Fill Control

1-3

N.C.

Low

Alarm

Dual Low

Alarm

Model 2A

2 Conductors

1-3

N.C. N.C.

Fill Control
(Pump Up)

Model 3LE\C3LE

4 Conductors

1-2

On

N.C.

Fill Control

N.C.N.C.

1-2

3-4

N.C.

Isolated

Low Alarm

N.C.

N.O.

Single Pole, Double Throw

N.O.

High

Alarm

N.C.

Low

Alarm

The diagrams show the action of each Kari oat

switch model, organized by basic application type.
Use the key to interpret each diagram. Contact
Automation Products Group, Inc. for help selecting
the right model.

Model 3A

4 Conductors

1-2

1-3 1-4

N.C.

N.C.

Fill Control Low

Alarm

N.C.

Model 3AE

4 Conductors

1-3

1-2

4-5

N.C.N.C.

N.C.

Fill Control Isolated

Low Alarm

FOUR LEVEL

High High

High

Low

Low Low

Model 4L

4 Conductors

1-31-2

On

N.C.

N.C.

Fill ControlHigh, Low

N.O.

Alarm

1-4

Model 4L5E

5 Conductors

1-31-2

On #1

On #2

N.C.

N.C.

Duplex Pump Fill

N.C.

Isolated

Low Alarm

Popular Models (marked in blue above)

Model Number Model Description

KA-1L/M1L One switch, NC

KA-2L/M2L Two switch, NC, hysteresis

KA-4L Four switch, NC, hysteresis, hi/low alarms

Automation Products Group, Inc. | 888.525.7300 | [e-mail] | www.apgsensors.com

®

Rev. A, 08/28/2015

Model 4A

5 Conductors

4-5

1-31-2

N.C.

N.C.

Fill ControlHigh, Low

N.C.

1-4

1-5

N.O.

Alarm

Perfect

Backup

Two level control with

built-in hysteresis, wired

to the motor starter.

What more could you

ask for?

5

APG

Specications

Performance

• Switching Dierential:
Standard: Min: 10 in. - Max: 50 in.
Optional: Min. 2.5 in - 75 in. (60 in. M series)

• Maximum Pressure: 28 psi (2 bar)

Connectivity

• Cable: Up to 5 wires

Environmental

• Max. Liquid Temperature:
Standard: 130ºF (54ºC)
Optional: 175ºF (80ºC)

• Protection Rating:
IP67

NEMA 6

Certication

• CSA General Purpose

• CE

Electrical

• Maximum Voltage: 250 VAC or DC

• Maximum AC Current (Resistive): 6 A

• Maximum AC Current (Inductive): 3 A

• Maximum DC Power: 75 VA (0.3 A @ 250 V)

Physical

• Minimum Fluid Specic Gravity:

0.7 for Standard oat

0.95 for Mini oat

• Standard Cable Lengths:
5m (16 ft)
15m (49 ft)

• Weight: 1.3 - 4 lbs (varies on type)

• Float - Polypropylene

• Cable

Standard: PVC
Optional: Rubber
PTFE (Teon®)
TPU (Oil resistant)

Automation Products Group, Inc. | 888.525.7300 | [e-mail] | www.apgsensors.com

®

Rev. A, 08/28/2015

6

APG

Model Conguration Options

Model Number: KA - ______ - ______ - ______ - ______
A B C D

A. Model and Function

Null-Large, C-Medium, M-Mini

Ex. 1H (Large), C1H (Medium), M1H (Mini)

□ __1L Low Alarm
□ __1H High Alarm
□ __1C High / Low Alarm
□ __1LE Dual Low Alarm*
□ __1HE Dual High Alarm*

Note: A cable weight does not come with single level oats.

Null-Large, C-Medium, M-Mini

Ex. 2H (Large), C2H (Medium), M2H (Mini)

□ __2L Hysteresis Fill Control (pump Up)
□ __2H Hysteresis Empty Control (Pump Down)
□ __2Y Empty Control (Pump Down)*
□ __2A Fill Control (Pump Up)*

*Function not available with M-Series model.

Null-Large, C-Medium

Ex. 3H (Large), C3H (Medium)

□ __2HL High and Low Alarm
□ __3L Hysteresis Fill + Low Alarm
□ __3H Hysteresis Empty + High Alarm
□ __3Y Empty Control + High Alarm
□ __3LE Hysteresis Fill + Isolated Low Alarm
□ __3HE Hysteresis Empty + Isolated High Alarm

Null-Large

Ex. 3Y (Large), only available in large size

□ 3A Fill Control + Low Alarm
□ 3AE Fill Control + Isolated Low Alarm
□ 3YE Empty Control + Isolated High Alarm
□ 4A Fill + High and Low Alarm (5 conductor)
□ 4L Hysteresis Fill + High and Low Alarm (4 conductor)
□ 4Y Empty + High and Low Alarm (5 conductor)
□ 4H Hysteresis Empty + High and low Alarm

(4 conductor)

□ 4L5E Duplex Pump Fill + Isolated Low Alarm
□ 4H5E Duplex Pump Empty + Isolated High Alarm
□ 4Y39 Lead/Lag Pump Control + High and Low Alarm

B. High Temperature Option

□ (Null) Standard 130ºF (55ºC)
□ K High Temperature 175ºF (80ºC)

C. Cable Option

□ (Null) PVC
□ A Rubber
□ T PTFE (Teon

®

)

□ N TPU (Oil Resistant)

D. Cable Length

□ (Null) 16 ft. (5 m) cable standard
□ _L (specify in meters)

Note: Use the M-Mini option if no suspended solids are present,
the specic gravity of the liquid is greater than 0.95 and no more

than two switch points are needed.

Kari Accessories

Please order separately, by part number.

Description Part Number

Kari A weight - PP covered 3/4lb (400g) - 4.3 in X 2.2 in 122039

Kari B weight - PP covered 1 1/2lb (700g) - 5.2 in X 3 in 122040

Kari C weight - PP covered 2 1/4lb (1Kg) - 5.2 in X 3 in 122042

Automation Products Group, Inc. | 888.525.7300 | [e-mail] | www.apgsensors.com

®

Rev. A, 08/28/2015

7

APG

APG & Kari-Finn

APG

In the 1960’s, Kari-Finn Oy developed
a method to install four switches in a
single oat. They patented the product
and changed the world of simple level
control forever.

At APG, we fell in love with the Kari-Finn
and their innovative oat switch. It ts
perfectly with our passion for making
high quality sensors for reliable level
and pressure measurement and control.

We have long had a relationship of
trust based on mutual values. We’re
the exclusive distributor of Kari oat
switches in North America.

Lift Stations

®

®

While the Kari oat switch can be used
in a myriad applications, it’s extremely
well suited for lift stations. A single oat
can control a duplex pumping station
with built-in hysteresis.

Backup Pump Control

The KA-2H and KA-2L models are ideal
for backup pump control. They have built-in hysteresis
(no need for a controller to provide this logic) and can
be wired directly to the motor starter.

These oats are perfect for any backup pump control
application in almost any tank or vessel.

You can nd us on Twitter (@apgsensors), Facebook
(APGsensors), and LinkedIn (Automation Products
Group, Inc.).

For questions about Kari or APG, contact us using the
information below. We also have live chat on our website.

Automation Products Group, Inc. | 888.525.7300 | [e-mail] | www.apgsensors.com

Document #9004543 Rev. A, 08/28/2015