Omron K3MA-L Manual
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Omron K3MA-L Manual

Temperature meter
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Temperature Meter
Highly Visible LCD Display with 2-color
(Red and Green) LEDs
Wide input range - select from two types of plati-
num-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) pro-
tects against electric shock.
Water- and dust-proof NEMA4X (IP66 equivalent)
front panel.
Recognized to U.S. and Canadian requirements
under the Component Recognition Program of UL
with CE marking.
Ordering Information
Input type
Platinum-resistance thermometer or
thermocouple
Model Number Legend:
K3MA-L-@
1
2
3
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
Supply voltage
100 to 240 VAC
24 VAC/VDC
Output
None
1 relay contact output (SPDT) K3MA-L-C 100-240VAC
None
1 relay contact output (SPDT) K3MA-L-C 24VAC/VDC
K3MA-L

C
US
Model
K3MA-L 100-240VAC
K3MA-L 24VAC/VDC
1

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Summary of Contents for Omron K3MA-L

  • Page 1 Supply voltage Output Model Platinum-resistance thermometer or 100 to 240 VAC None K3MA-L 100-240VAC thermocouple 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 Model Number Legend: K3MA-L-@ 1. Input Type Platinum-resistance thermometer or thermocouple 2.

  • Page 2: Specifications

    K3MA-L 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 6 VA max.

  • Page 3: Measuring Ranges

    K3MA-L K3MA-L Measuring Ranges Platinum-resistance Thermometer Input Pt100 JPt100 • Range 200 to 850 199.9 to 500.0 0.0 to 100.0 199.9 to 500.0 0.0 to 100.0 • 300 to 1500 199.9 to 900.0 0.0 to 210.0 199.9 to 900.0 0.0 to 210.0...
  • Page 4 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.

  • Page 5: Operation

    K3MA-L K3MA-L Operation Main Functions Input Types and Ranges Parameter Setting Input type Meaning • • @EÈQ Platinum-resistance Pt100 200 to 850 300 to 1500 • • thermometer 199.9 to 500.0 1999 to 900.0 • • 0.0 to 100.0 0.0 to 210.0 •...
  • Page 6 ON until the current time can be stored and displayed. This is useful, for example, when measur- Use this to reset the K3MA-L after returning it to its factory-set ing the maximum value. condition.

  • Page 7: External Connections

    K3MA-L K3MA-L External Connections Terminal Arrangement Models with comparative output Power supply Output 100- to 240-VAC type or terminals 24-VAC/VDC type (No polarity for 24-VDC connection.) Input terminals − For thermocouple For platinum- input resistance thermometer input Terminal No. Name...

  • Page 8: Block Diagram

    K3MA-L K3MA-L Block Diagram Input Input Micro- Display computer Contact EEPROM output (See Output circuit note.) 12 V Constant voltage circuit Power supply circuit Note: Relay output models only.
  • Page 9 K3MA-L K3MA-L 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.
  • Page 10 Parameters 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.
  • Page 11 K3MA-L K3MA-L Press Level more than 3 s. Press Level Key for less than 1 s. Advanced-function Initial setting level setting level Press Level Enter more than 1 s. password "−169" ∼ ∼ Input type Parameter initialization MODE Temperature unit...

  • Page 12: Initial Settings

    K3MA-L K3MA-L Press Level Key + Mode Key for more than 1 s. Operation Level Protect level Press Level Key + Mode Key for more than preset time. Operation/adjustment lockouts MODE Setting level lockouts MODE Setting change lockout MODE Operation/Adjustment Lockouts Initial Settings Restricts key operations for operation level and adjustment level.

  • Page 13: Setting Example

    Temperature sensor: E52-PR Thermocouple, Measurement • range: 0 to 1,400 Example: Monitoring the temperature of an industrial furnace 1. Set the K3MA-L input type to the thermocouple R input range. Parameter: @EÈQ (input type), Setting value:  • 2. Select centigrade ( C) as the temperature unit.

  • Page 14: Installation

    Unit Markings (Provided) secure the K3MA-L. • The unit markings are not attached to the K3MA-L. Select the de- sired markings from the provided sheet. Note: For scales and gauges, use the unit markings that are...
  • Page 15 Do not connect a surge absorber to the tempera- Take safety measures, such as installing a separate monitoring ture sensor input section of the K3MA-L. system, to ensure safety even if the product fails. Product fail- ure may prevent comparative outputs from being generated, Line filter resulting in serious accidents.

  • Page 16: Troubleshooting

    Error contents Countermeasures 6 Not lit RAM memory error Repair is necessary. Consult your OMRON sales rep- resentative. 6 EEPROM memory error When this error is displayed, press the Level Key for 3 sec- onds, and the settings will be re- stored to the factory settings.

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