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K3MA-L

Temperature Meter

K3MA-L

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

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 common 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/s2
5 min each in X, Y, and Z directions for 10 sweeps.
Shock resistance 150 m/s2 (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
UL61010-1, CSA C22.2 No.61010-1-04, conforms to EN61010-1 (Pollution degree 2/overvoltage category II)
Conforms to VDE0106/P100 (finger protection)
EMC (EMI) EN61326-1 Industrial electromagnetic environment
Emission Enclosure: CISPR 11 Group 1 class A
Emission AC Mains: CISPR 11 Group 1 class A
(EMS) EN61326-1 Industrial electromagnetic environment
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

Characteristics

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 selected.)
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
Rear case: IEC standard IP20
Memory protection Non-volatile memory (EEPROM) (possible to rewrite 100,000 times)

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 indication 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

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 0 1 2 3 4

Thermocouple

Input K J T E L U N R S B
Range °C -200 to
1300
-20.0
to
500
-100
to
850
-20.0
to
400
-200
to
400
-199.9
to
400
0
to
600
-100
to
850
-200
to
400
-199.9
to
400
-200
to
1300
0
to
1700
0
to
1700
100
to
1800
°F -300
to
2300
0
to
900
-100
to
1500
0
to
750
-300
to
700
-199.9
to
700
0
to
1100
-100
to
1500
-300
to
700
-199.9
to
700
-300
to
2300
0
to
3000
0
to
3000
300
to
3200
Parameter 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Input/Output Ratings

Relay Contact Output

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
Min. permissible load
(P level, reference value)
10 mA at 5 VDC
Mechanical life 20,000,000 times min.
Electrical life 100,000 times min.