Omron K3MA-L 100-240VAC, K3MA-L-C 100-240VAC, K3MA-L 24VAC/VDC, K3MA-L-C 24VAC/VDC User Manual

Temperature Meter K3MA-L K-45

Panel

indicators

Temperature Meter

K3MA-L

Highly Visible LCD Display with 2-color
(Red and Green) LEDs

• Wide input range - select from two types of platinum-resistance
thermometers and ten types of thermocouples.

• Front-panel key operation for easy setting.

• Average processing function suppresses flicker.

• Temperature input shift and temperature unit selection func­tions.

• Easy confirmation of max/min display.

• Short 80-mm depth (measured from edge of face plate).

• Finger protective cover (standard equipment) protects against
electric shock.

• Water- and dust-proof NEMA4X (IP66 equivalent) front panel.

• Recognized to conform to U.S. and Canadian requirements un­der the Component Recognition Program of UL.

• CE marking.

Model Number Structure

■ Model Number Legend

1. Input Type

L: Platinum-resistance thermometer or thermocouple

2. Output Type

None: No output
C: With relay contact output (SPDT)

3. Supply Voltage

100-240VAC:100 to 240 VAC
24VAC/VDC:24 VAC/VDC

Ordering Information

■ List of Models

■ Accessories (Order Separately)

12 3

K3MA-L-@

Input type Supply voltage Output Model

Platinum-resistance thermometer or
thermocouple

100 to 240 VAC None K3MA-L 100-240VAC

1 relay contact output (SPDT) K3MA-L-C 100-240VAC

24 VAC/VDC None K3MA-L 24VAC/VDC

1 relay contact output (SPDT) K3MA-L-C 24VAC/VDC

Name Shape Model

Splash-proof Soft Cover K32-49SC

Hard Cover K32-49HC

K-46 Temperature Meter K3MA-L

Specifications

■ Ratings

K3MA-L 100-240VAC, K3MA-L-C 100-240VAC K3MA-L 24VAC/VDC, K3MA-L-C 24VAC/VDC

Supply voltage 100 to 240 VAC 24 VAC (50/60 Hz), 24 VDC
Operating voltage range 85% to 110% of the rated supply voltage
Power consumption

(under maximum load)

6 VA max. 4.5 VA max. (24 VAC)

4.5 W max. (24 VDC)

Insulation resistance 20 MΩ min. (at 500 VDC) between external terminal and case.

Insulation provided between inputs, outputs, and power supply.

Dielectric strength 2,000 VAC for 1 min between external terminal and case.

Insulation provided between inputs, outputs, and power supply.

Noise immunity ±1,500 V on power supply terminals in normal or com-

mon mode.

±1 µs, or 100 ns for square-wave noise with 1 ns.

±480 V on power supply terminals in normal mode.
±1,500 V in common mode.
±1 µs, or 100 ns for square-wave noise with 1 ns.

Vibration resistance

Vibration: 10 to 55 Hz, Acceleration: 50 m/s

2

5 min each in X, Y, and Z directions for 10 sweeps.

Shock resistance

150 m/s

2

(100 m/s2 for relay contact outputs) 3 times each on 3 axes, 6 directions.

Ambient temperature Operating:−10°C to 55°C (with no condensation or icing)

Storage:−25°C to 65°C (with no condensation or icing)

Ambient humidity Operating:25% to 85% (with no condensation)
Approved safety standards UL3121-1, conforms to EN61010-1 (Pollution degree 2/overvoltage category II)

Conforms to VDE0106/P100 (finger protection)

EMC (EMI)EN61326+A1Industry

Emission Enclosure:CISPR 11 Group 1 class A: CISRP16-1/-2
Emission AC Mains:CISPR 11 Group 1 class A: CISRP16-1/-2

(EMS)EN61326+A1Industry
Immunity ESD:EN61000-4-2:4 kV contact discharge
8 kV air discharge
Immunity RF-interference:EN61000-4-3:10 V/m (amplitude-modulated, 80 MHz to 1 GHz)

Electrical Fast Transient Noise:EN61000-4-4:2 kV (power line)
Immunity Burst Noise:1 kV line to line (I/O signal line)

Immunity Surge:EN61000-4-5:1 kV (power line)
2 kV line to ground (power line)
Immunity Conducted Disturbance:EN61000-4-6:3 V (0.15 to 80 MHz)
Immunity Voltage Dip/Interrupting:EN61000-4-11:0.5 cycle, 0, 180°, 100% (rated voltage)

Weight Approx. 200 g

Temperature Meter K3MA-L K-47

Panel

indicators

■ Characteristics

Note: The indication accuracy of the K thermocouple at a temperature of −200 to 1300°C is ±2°C ±1 digit maximum.

The indication accuracy of the T and N thermocouples at a temperature of −100°C or less is ±2°C ±1 digit maximum.
The indicator accuracy of the U and L thermocouples at any temperature is ±2°C ±1 digit maximum.
The indication accuracy of the B thermocouple at a temperature of 400°C or less is unrestricted.
The indication accuracy of the R and S thermocouples at a temperature of 200°C or less is ±3°C ±1 digit maximum.

■ Measuring Ranges

Platinum-resistance Thermometer

Thermocouple

Indication accuracy (at 23±5°C)
(See note.)

Thermocouple:
(±0.5% of indication value or ±1°C, whichever greater) ±1 digit max.

Platinum-resistance thermometer:
(±0.5% of indication value or ±1°C, whichever greater) ±1 digit max.

Input Thermocouple: K, J, T, E, L, U, N, R, S, B

Platinum-resistance thermometer: JPt100, Pt100
Measurement method Double integral method
Sampling period 500 ms
Display refresh period Sampling period (sampling times multiplied by number of averaging times if average processing is se-

lected.)
Max. displayed digits 4 digits (−1999 to 9999)
Display 7-segment digital display, Character height: 14.2 mm
Polarity display “−” is displayed automatically with a negative input signal.
Zero display Leading zeros are not displayed.
Input shift Input shift equivalent to the setting value supported for all points within the sensor measurement range.
Hold function Max hold (maximum value), Min hold (minimum value)
Hysteresis setting Programmable with front-panel key inputs (0001 to 9999).
Other functions Display color change (green (red), green, red (green), red)

Average processing (simple average OFF/2/4/8 operations)

Setting change lockout

Parameter initialization
Output Relay contact (SPDT)
Delay in comparative outputs 1 s max.
Degree of protection Front panel: NEMA4X for indoor use (equivalent to IP66)

Rear case: IEC standard IP20

Terminals: IEC standard IP00 + finger protection (VDE0106/100)
Memory protection Non-volatile memory (EEPROM) (possible to rewrite 100,000 times)

Input Pt100 JPt100

Range °C −200 to 850 −199.9 to 500.0 0.0 to 100.0 −199.9 to 500.0 0.0 to 100.0

°F −300 to 1500 −199.9 to 900.0 0.0 to 210.0 −199.9 to 900.0 0.0 to 210.0

Parameter 01234

Input K J T E L U N R S B

Range °C −200

to
1300

−20.0
to

500.0

−100
to
850

−20.0

to

400.0

−200
to
400

−199.9
to

400.0

0
to
600

−100
to
850

−200
to
400

−199.9
to

400.0

−200
to
1300

0
to
1700

0
to
1700

100
to
1800

°F −300

to
2300

0.0
to

900.0

−100
to
1500

0.0

to

750

−300
to
700

−199.9
to

700.0

0
to
1100

−100
to
1500

−300
to
700

−199.9
to

700.0

−300
to
2300

0
to
3000

0
to
3000

300
to
3200

Parameter56789101112131415161718

K-48 Temperature Meter K3MA-L

■ Input/Output Ratings

Relay Contact Output

Connections

■ Terminal Arrangement

■ Block Diagram

Item Resistive load (cosφ = 1) Inductive load (cosφ = 0.4, L/R = 7 ms)

Rated load (UL ratings) 5 A at 250 VAC, 5 A at 30 VDC 1.5 A at 250 VAC, 1.5 A at 30 VDC
Rated carry current 5 A max. (at COM terminal)
Max. contact voltage 400 VAC, 150 VDC
Max. contact current 5 A (at COM terminal)
Max. switching capacity 2,000 VA, 192 W 375 VA, 30 W
Min. permissible load

(P level, reference value)

10 mA at 5 VDC

Mechanical life 20,000,000 times min. (at a switching frequency of 1,200 time/min)

Electrical life
(at an ambient temperature of 20°C)

100,000 times min. (at a rated load switching frequency of 10 time/min)

Power
supply

Output
terminals

Input
terminals

+

++

−

100- to 240-VAC type or
24-VAC/VDC type*
(No polarity for 24-VDC
connection.)

Models with
comparative
output

For thermocouple
input

For platinum­resistance
thermometer input

OUT1

A

B

B

A1

A2

E1

E2

E3

E4

E5

E6

E4

E5

E6

*Recommended DC power supply: eg. OMRON S8VS

Terminal No. Name Description

Operation power Connects the operation power supply.
Thermocouple or platinum-resistance ther-

mometer input

Connects the thermocouple or platinum-resis­tance thermometer input.

Outputs Outputs the relay outputs.

A1 A2

-

E4 E6

-

E5

-

E1 E2

,

E3

-

X

5 V 12 V

Input Input

Micro­computer

Key

Display

Output
circuit

Contact
output (See
note.)

Constant voltage circuit

Power supply circuit

EEPROM

Note: Relay output models only.

Temperature Meter K3MA-L K-49

Panel

indicators

Operation

■ Main Functions

Input Types and Ranges

Note: The initial value is “5: thermocouple K (−200 to 1300°C/−300 to 2300°F).”

Temperature Unit Selection

Either centigrade (°C) or fahrenheit (°F) can be selected as the tem­perature unit.

OUT Types (Comparative Output
Models Only)

OUT 1 can be set to operate in one of the three following modes in
accordance with the compared values:

• Upper limit (High Acting):

The output is turned ON when the measurement value is greater
than its set value.

• Lower limit (Low Acting):

The output is turned ON when the measurement value is less than
its set value.

• Upper and lower limits (Outside Band Acting):

An upper limit (H set value) and lower limit (L set value) can be set
independently.
The output is turned ON when the measurement value is greater
than the upper-limit set value or less than the lower-limit set value.

Parameter Setting Input type Meaning

in-t 0 Platinum-resistance

thermometer

Pt100 −200 to 850°C −300 to 1500°F
1 −199.9 to 500.0°C −1999 to 900.0°F
2 0.0 to 100.0°C 0.0 to 210.0°F
3 JPt100 −199.9 to 500.0°C −199.9 to 900.0°F
4 0.0 to 100.0°C 0.0 to 210.0°F
5 Thermocouple K −200 to 1300°C −300 to 2300°F
6 −20.0 to 500.0°C 0.0 to 900.0°F
7J−100 to 850°C −100 to 1500°F
8 −20.0 to 400.0°C 0.0 to 750.0°F
9T−200 to 400°C −300 to 700°F
10 −199.9 to 400.0°C −199.9 to 700.0°F
11 E 0 to 600°C 0 to 1100°F
12 L −100 to 850°C −100 to 1500°F
13 U −200 to 400°C −300 to 700°F
14 −199.9 to 400.0°C −199.9 to 700.0°F
15 N −200 to 1300°C −300 to 2300°F
16 R 0 to 1700°C 0 to 3000°F
17 S 0 to 1700°C 0 to 3000°F
18 B 100 to 1800°C 300 to 3200°F

Parameter Setting Meaning

d-u

cDisplay in °C.
fDisplay in °F.

Parameter Setting Meaning

out 1.t

hi Upper limit: Alarm op-

erates at upper limit.

lo Lower limit: Alarm op-

erates at lower limit.

hi-lo Upper and lower lim-

its: Alarm operates at
upper and lower lim­its.

Upper Limit (High Acting) Lower Limit (Low Acting)

OUT1 value

Measurement
value

ON

OFF

Output

OUT1 value

Hysteresis

Hysteresis

Hysteresis

Hysteresis

Upper and Lower Limits
(Outside Band Acting)

OUT1 upper-limit
value

OUT1 lower-limit
value

ON

OFF

Output

ON

OFF

Output

Measurement
value

Measurement
value

K-50 Temperature Meter K3MA-L

Temperature Input Shift

Input shift equivalent to the setting value supported for all points within
the sensor measurement range.

Parameter Initialization

This function returns all of the parameters to their initial values.

Use this to reset the K3MA-L after returning it to its factory-set condi­tion.

Average Processing

Average processing stabilizes displayed values to minimize flicker by
averaging the fluctuating input signals. Average processing can be
performed for the measurement values in either of four steps (OFF, 2
times, 4 times, or 8 times).

This is useful for ignoring rapid fluctuations, e.g., eliminating spike
noise.

Hysteresis (Comparative Output
Models Only)

The hysteresis of comparative outputs can be set to prevent chatter­ing in the output when the measurement value fluctuates finely near
the OUT value.

Changing the Display Color

The color of the value displayed can be set to either red or green. For
comparative output models, the display color can be set to change
from green to red, or from red to green, according to the status of the
comparison criterion.

Display Auto-return Time

This function automatically returns the display to the operation level’s
current value if no keys are pressed for a preset time (called the dis­play auto-return time).

Move-to-Protect-Level Time

The time required to shift to the protect level can be set as desired.

MAX/MIN Display

The maximum and minimum measurement (display) values from the
time the power is turned ON until the current time can be stored and
displayed. This is useful, for example, when measuring the maximum
value.

Parameter Setting

ins -1999 to 9999

Parameter Setting Meaning

init off ---

on Initializes all parame-

ters.

Temperature

Before shift

After shift

Temperature input
shift value

Input

Upper limit (high acting)

Set value

Measurement value

Output

ON

OFF

Hysteresis

192.0

258.9

OUT1 value

Green

Red

Current value

MAX value

MIN value

MAX/MIN

MAX/MIN

MAX/MIN

Max

Min

MAX/MIN LEVEL MODE SHIFT UP

MAX/MIN LEVEL MODE SHIFT UP

MAX/MIN LEVEL MODE SHIFT UP

Temperature Meter K3MA-L K-51

Panel

indicators

Nomenclature

Name Functions

1. Main indicator Displays current values, parameters, and set values.

2. Opera­tion indica­tors

1 Lit when output 1 is ON.
SV Lit when a set value is being displayed or changed.
Max Lit when the main indicator is showing the MAX value.
Min Lit when the main indicator is showing the MIN value.

3. Level indicator Displays the current level that the K3MA-L is in. (See below for details.)

4. MAX/MIN Key Used to display the MAX and MIN values when a measurement value is being displayed.

5. Level Key Used to change the level.

6. Mode Key Used to allow the main indicator to indicate parameters sequentially.

7. Shift Key Used to enable a set value to be changed. When changing a set value, this key is used to move along the digits.

8. Up Key Used to change a set value. Used to set or clear a forced-zero function when a measurement value is being displayed.

Level indicator Level

pProtect

Not lit Operation

a Adjustment

s Initial setting

f Advanced-function setting

1

Max
Min

SV

MAX/MIN LEVEL MODE SHIFT UP

2. Operation indicators

3. Level indicator

4. MAX/MIN key

5. Level key

6. Mode key

7. Shift key

8. Up key

1. Main indicator

K-52 Temperature Meter K3MA-L

Dimensions

Application Examples

ABCDE

UPSHIFTMODELEVELMAX/MIN

101.2
91

96

48

1.3

12

97

85

80

44.8

45

+0.5

0

92

+0.5

0

Finger protective
cover (provided)

Main indicator
character size

Panel cut-out

7.6 mm

14.2 mm

75 min.

120 min.

The K3MA-L uses M3 terminals.
A terminal cover is provided.

Alarm output

Sending a temperature
alarm for molding
equipment

Monitoring the
temperature of an
industrial furnace

Monitoring the bearing
temperature for a
generator motor

E5EN

K3MA-L

Alarm output

Molding equipment

K3MA-L

K3MA-L

Industrial furnace

PID control

Generator motor

Alarm output

• Monitoring the temperature of an indus­trial furnace/sintering furnace.

• Monitoring/alarm function for disinfect­ing equipment.

• Monitoring (failsafe checking) abnormal
temperatures in molding equipment.

• Monitoring the liquid temperature for
cleaning devices.

• Monitoring temperature rises in electric
power generating facilities.

• Inspecting temperatures in machines
and devices.

Temperature Meter K3MA-L K-53

Panel

indicators

Installation

1. Insert the K3MA-L into the panel cut-out hole.

2. For a waterproof installation, insert the rubber gasket onto the

body of the K3MA-L.

3. Fit the adaptor into the grooves on the left and right sides of the

rear case, then push it until it contacts the panel to secure the
K3MA-L.

■ Wiring Precautions

• Use crimp terminals.

• Tighten the terminal screws to a torque of approximately 0.5 N⋅m.

• To avoid the influence of noise, route signal lines and power lines

separately.

■ Wiring

• Use the following M3 crimp terminals.

■ Unit Labels (Provided)

• The unit labels are not attached to the K3MA-L. Select the desired

labels from the provided sheet.

Note: For scales and gauges, use the unit labels that are specified by

the relevant laws or regulations.

5.8 mm max.

5.8 mm max.

K-54 Temperature Meter K3MA-L

Precautions

!WARNING

Do not touch any of the terminals while the power is being sup­plied. Doing so may result in electric shock.

!Caution

Do not disassemble the product or touch the internal components
of the product while the power is being supplied. Doing so may re­sult in electric shock.

!Caution

Do not allow metal objects or wire cuttings to enter the product.
Doing so may result in electric shock, fire, or malfunction.

!Caution

Perform correct settings for the product according to the control
application. Failure to do so may cause unexpected operation, re­sulting in damage to the product or injury.

!Caution

Take safety measures, such as installing a separate monitoring
system, to ensure safety even if the product fails. Product failure
may prevent comparative outputs from being generated, resulting
in serious accidents.

Observe the following precautions to ensure safety.

1. Maintain the power supply voltage within the range specified in

the specifications.

2. Maintain the load within the ratings specified in the specifications.

3. Check each terminal for correct number and polarity before con-

necting it. Incorrect or reverse connections may damage or burn
out internal components in the product.

4. Tighten the terminal screws securely. The recommended tighten-

ing torque is 0.43 to 0.58 N

⋅m. Loose screws may cause fire or

malfunction.

5. Do not connect anything to unused terminals.

6. Provide a switch or circuit breaker so that operators can easily

turn OFF the power supply when necessary. Also provide appro­priate indications of such devices.

7. Do not attempt to disassemble, repair, or modify the product.

8. Do not use the product where flammable or combustible gases

are present.

Application

General Precautions

1. Do not use the product in the following locations:

• Locations subject to direct radiant heat from heating equip­ment.

• Locations subject to exposure to water, oil, or chemicals.

• Locations subject to direct sunlight.

• Locations subject to dust or corrosive gases (particularly, sul­furic gas or ammonia gas).

• Locations subject to severe changes in temperature.

• Locations subject to icing or condensation.

• Locations subject to shock or vibration.

2. Do not block heat dissipation around the product, i.e., provide suf-

ficient space for heat dissipation.

3. Ensure that the rated voltage is reached within two seconds after

the power is turned ON.

4. Conduct aging for 15 minutes min. after power is turned ON for

correct measurement.

5. Do not touch the slit sections or terminals while the power is

being supplied to prevent the product from being affected by static
electricity.

6. Do not lay heavy objects on the product during use or storage.

Doing so may deform or deteriorate the product.

7. Do not use paint thinner for cleaning. Use commercially available

alcohol.

Mounting

• Mount the product to a panel that is 1 to 8 mm thick.

• Install the product in a horizontal position.

• Use crimp terminals that match screw sizes.

Noise Prevention

• Install the product as far as possible from devices that generate

strong, high-frequency fields (such as high-frequency welders or
sewing machines) or surges.

• Install surge absorbers or noise filters on nearby devices that gen-

erate noise (particularly motors, transformers, solenoids, magnet
coils, and other devices that have a high inductance component).
Do not connect a surge absorber to the temperature sensor input
section of the K3MA-L.

• To prevent inductive noise, separate the terminal block wiring for

the product from high-voltage or high-current power lines. Do not
route the wiring for the product in parallel with or tie it in a bundle
with power lines.
Take the following countermeasures against inductive noise in input
lines.

Temperature Inputs

Separate the lead wire that connects the product with a tempera­ture sensor from the load line to prevent the product from being
affected by inductive noise.

• When using a noise filter for the power supply, check for the voltage

and current and install it as close as possible to the Temperature
Meter.

• Do not install the product near radios, television sets, or wireless

devices. Doing so may cause reception interference.

Increasing Service Life

• Do not use the product in locations where the temperature or

humidity exceeds the ratings or where condensation may occur.
When installing the product in a panel, be sure that the temperature
around the product (not the temperature around the panel) does
not exceed the ratings. The product service life depends on the
ambient temperature. The higher the ambient temperature, the
shorter the service life. To extend the product service life, lower the
temperature inside the Temperature Meter.

• Use and store the product within the temperature and humidity

ranges given in the specifications. When gang-mounting Tempera­ture Meters or arranging them vertically, heat generated by the
Temperature Meters will cause the internal temperature to rise,
reducing the service life. In such cases, consider forced cooling
methods, such as using a fan to circulate air around the Tempera­ture Meters. Do not, however, allow only the terminals to be cooled.
Doing so will increase measurement error.

• The life of the output relays are greatly affected by the switching

capacity and switching conditions. Use these relays within their
rated load and electrical life. The contacts may fuse or burn if they
are used past their electrical life.

+

−

Line filter

Power
supply
input

Tempera­ture Meter

Signal
input

Tempera­ture Meter

Power
supply
input

Surge absorber

Temperature Meter K3MA-L K-55

Panel

indicators

Operating Procedures

■ Levels

“Level” refers to a grouping of parameters. The following table lists the operations that are possible in each of the levels, and the diagram tells how
to move between levels. There are some parameters that are not displayed for certain models.

Note: The move-to-protect-level time can be set in the advanced-function setting level.

Level name Function Measurement

Protect Setting lockouts. Continue
Operation Displaying current values, and setting OUT 1 value. Continue
Adjustment Setting communications writing control. Continue
Initial setting Making initial settings of input type, output operating action, and other

parameters.

Stopped

Advanced-function setting Setting average processing, display color settings, and other ad-

vanced function parameters.

Stopped

+

- 123.4

+

Power ON

Operation level

Protect level

Initial setting level

Advanced-function
setting level

Time set
by user

(See note.)

1 s min.

1 s min.

1 s min.

Flashing stops if key
is released.

Continue to press the key for 2 s min.

1 s min.

Password "−0169"

Indicates change of level.

Adjustment level

Less than 1 s

K-56 Temperature Meter K3MA-L

■ Parameters

−

−

−

− −

0

Temperature input shift
For models with the
comparative output function

MODE

MODE

MODE

MODE

Set one of these.

Current value

OUT1
value

OUT1
upper-limit
value

OUT1
lower-limit
value

Note: 1. Some parameters are not displayed for certain models.

2. The K3MA-L will stop measurement if the level is changed to the initial setting level or
the advanced-function setting level.

3. If the input range is changed, some parameters are set to default values. Therefore,
set the input range first.

4. Settings displayed in reversed colors are defaults.

Power ON

Operation level

Adjustment level

Press Level Key
for less than 1 s.

Press Level Key
for less than 1 s.

Temperature Meter K3MA-L K-57

Panel

indicators

−

−

− −

−−

////

−−

−−

Press Level
Key for
more than 3 s.

Press Level
Key for
more than 1 s.

Move to
advanced­function
setting level

MODE

Initial setting level

Press Level Key for less than 1 s.

Input type

Advanced-function
setting level

Enter
password
"−0169"

Parameter
initialization

Average
processing

OUT1 type

Temperature
unit

Temperature unit

OUT1 type

Upper Limit

Lower Limit

Upper/Lower
Limits

Models
with the
compara­tive out­put
function

MODE

MODE

MODE

MODE

Models
with the
compar­ative out­put
function

Display
color
change

Display
auto-return
time

Move-to­protect­level time

Green (red)

Green

Red (green)

Red

Unit: s

Unit: s

OUT1
Hysteresis

Unit: times

MODE

MODE

MODE

MODE

MODE

OUT1 hysteresis

Settings displayed in reversed colors are initial settings.

Password: −0169

K-58 Temperature Meter K3MA-L

Operation/Adjustment Lockouts

Restricts key operations for operation level and adjustment level.

• Initial setting is 0.

• This cannot be displayed on models not equipped with the compar-

ative output function.

Setting Level Lockouts

Restricts shifting to initial setting level or advanced-function setting
level.

Setting Change Lockout

Restricts setting changes by key operation. When this lockout is set,
it is no longer possible to shift to a setting change mode.

However, all protect level parameters can still be changed.

■ Initial Settings

/

/

/ /

/

MODE

MODE

MODE

Operation/adjustment
lockouts

Setting level lockouts

Setting change lockout

Operation Level

Protect level

Press Level Key + Mode Key for more than 1 s.

Press Level Key + Mode Key
for more than preset time.

ParameterSetting Operation level Moving to

adjustment

level

Process value

display

Set value

display

oapt

0 Allowed Allowed Allowed
1 Allowed Allowed Prohibited
2 Allowed Prohibited Prohibited

Parameter Setting Shift to initial

setting level

Shift to

advanced-

function

setting level

icpt 0 Allowed Allowed

1 Allowed Prohibited
2 Prohibited Prohibited

Parameter Setting Setting change by key

operation

wtpt

off Allowed
on Prohibited

If required, shift to the advanced-function setting level to set the
number of measurements for averaging, hysteresis values,
auto-zero time, display color change, display auto-return time,
or move-to-protect-level time.

Power ON

Press the Level Key for 3 s min. to move to the initial setting
level.

Select the input type.

If desired, shift to the adjustment level to set the temperature
input shift value.

Set the OUT values.

Press the Level Key for less than 1 s min. to return to the
operation level.

Measurement starts.

Temperature Meter K3MA-L K-59

Panel

indicators

■ Setting Example

Initial Settings

The settings for the following example are shown here.

Example: Monitoring the temperature of an
industrial furnace

Here, the temperature inside the furnace is to be displayed in centi­grade (°C).
Temperature sensor: E52-PR Thermocouple, Measurement range: 0
to 1,400°C.

1. Set the K3MA-L input type to the thermocouple R input range.

Parameter: in-t (input type), Setting value: 16

2. Select centigrade (°C) as the temperature unit.

Parameter: d-u (temperature unit), Setting value: c

If you are using a comparative output model, make the setting as
desired.

■ Troubleshooting

When an error occurs, error details will be displayed on the main indicator. Confirm the error from the main indicator and take the appropriate coun­termeasures.

1

E52-PR Thermocouple

K3MA-L-C 100-240VAC

Industrial furnace

Max
Min

SV

MAX/MIN LEVEL MODE SHIFT UP

Level display Main indicator Error contents Countermeasures

Not lit e111 RAM memory error Repair is necessary.

Consult your OMRON sales repre­sentative.

5 e111 EEPROM memory error When this error is displayed, press

the Level Key for 3 seconds, and
the settings will be restored to the
factory settings.

If the error cannot be recovered, re­pair is necessary.

Consult your OMRON sales repre­sentative.

Not lit Flashes s.err Input error Confirm that the temperature sen-

sor is correctly connected, and that
there are no broken signal lines to
the temperature sensor.

If the condition does not return to
normal, repair is necessary.

Consult your OMRON sales repre­sentative.

Not lit Flashes 9999 The measurement value after tem-

perature input correction exceeds

9999.

The temperature input correction
value may be inappropriate.

Use the adjustment level to review
the temperature input correction
value.

Not lit Flashes -1999 The measurement value after tem-

perature input correction is lower
than −1999.

The temperature input correction
value may be inappropriate.

Use the adjustment level to review
the temperature input correction
value.

K-60 Temperature Meter K3MA-L

Warranty and Limitations of Liability

■ WARRANTY

OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or other period if
specified) from date of sale by OMRON.

OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT, MERCHANTABILITY,
OR FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER
ALONE HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DIS­CLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED.

■ LIMITATIONS OF LIABILITY

OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS, OR COMMER­CIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLI­GENCE, OR STRICT LIABILITY.

In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE PRODUCTS UNLESS

OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY HANDLED, STORED, INSTALLED, AND MAINTAINED AND NOT
SUBJECT TO CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.

Application Considerations

■ SUITABILITY FOR USE

OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of products in the custom­er's application or use of the products.

At the customer's request, OMRON will provide applicable third party certification documents identifying ratings and limitations of use that apply
to the products. This information by itself is not sufficient for a complete determination of the suitability of the products in combination with the end
product, machine, system, or other application or use.

The following are some examples of applications for which particular attention must be given. This is not intended to be an exhaustive list of all
possible uses of the products, nor is it intended to imply that the uses listed may be suitable for the products.

• Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or uses not described in this catalog.

• Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical equipment, amusement machines, vehicles,

safety equipment, and installations subject to separate industry or government regulations.

• Systems, machines, and equipment that could present a risk to life or property.
Please know and observe all prohibitions of use applicable to the products.

NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT ENSURING THAT THE
SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCTS ARE PROPERLY RATED
AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.

In the interest of product improvement, specifications are subject to change without notice.

ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.

Cat. No. N109-E1-04