K3MA-L-C AC/DC24

Temperature Meter

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Temperature Meter, Platinum resistance thermometer/Thermocouple, Relay contact, 24 VAC/VDC

Power supply voltage	24 VDC 24 VAC 50/60 Hz
Input type	Temperature (Platinum resistance thermometer/Thermocouple)
Digits	4 digit (-1999 to 9999)

Item list of K3MA-L

Ratings/Specifications
Dimensions
Connection diagram
Internal connection

Ratings/Specifications

As of March 14, 2024


Power supply voltage		24 VDC 24 VAC 50/60 Hz
Allowable power supply voltage range		85 to 110% of the power supply voltage
Power consumption		4.5 W max. (at 24 VDC)/4.5 VA max. (at 24 VAC)
Input type		Temperature (Platinum resistance thermometer/Thermocouple)
Output type		Judgment output: Contact Comparative output: OUT 1
Temperature measurement input (Accuracy)		Platinum resistance thermometer: (±0.5% of indicated value or ±1 ℃, whichever is greater) ±1 digit max. Thermocouple: (±0.5% of indicated value or ±1 ℃, whichever is greater) ±1 digit max. (The indication accuracy of K thermocouples in the -200 to 1300 ℃ range, T and N thermocouples at a temperature of -100 ℃ max., and U and L thermocouples at any temperatures is ±2 ℃ ±1 digit maximum. B thermocouple at a temperature of 400 ℃ max. is not specified. R and S thermocouples at a temperature of 200 ℃ max. is ±3 ℃ ±1 digit maximum.)
Judgment output	Contact output	SPDT Rated load: Resistive load: 250 VAC 5 A (cosφ=1)/5 A at 30 VDC, Inductive load: 250 VAC 1.5 A (cosφ=0.4)/30 VDC 1.5 A (L/R＝7 ms) Minimum applicable load: 10 mA at 5 VDC (failure level: P Reference value) Life expectancy: 100,000 operations min. (Electrical)/20 million operations min. (Mechanical)
Display	Display method	Negative LCD (backlit LED) 7-segment digital display
	Digits	4 digit (-1999 to 9999)
	Character height	14.2 mm (green/red)
Sampling period		500 ms
Comparative output response time		1 s max.
Insulation resistance		Between the entire external terminal and case: 20 MΩ min. (at 500 VDC) Between inputs, outputs, and power supply: 20 MΩ min. (at 500 VDC)
Dielectric strength		Between the entire external terminal and case: 2,000 VAC 1 min
Noise immunity		±480 V at power supply terminals in normal mode ±1,500 V at power supply terminals in common mode (waveform with 1-ns rising edge and pulse width of 1 µs/100 ns)
Vibration resistance		Malfunction: 10 to 55 Hz, Single amplitude 0.35 mm, 10 sweeps of 5 min each in X, Y, and Z directions
Shock resistance		Malfunction: 100 m/s², 3 times each in 3 axes 6 directions
Degree of protection		Front: NEMA TYPE 4X for indoor use (equivalent to IP66) Case rear: IP20 Terminals: IP00 + finger protection (VDE0106/100) with terminal Cover
Memory protection		Non-volatile memory (Number of rewrites: 100,000)
Ambient temperature		Operating: -10 to 55 ℃ (with no freezing or condensation) Storage: -25 to 65 ℃ (with no freezing or condensation)
Ambient humidity		Operating: 25 to 85 % (with no condensation)
Accessories		Waterproof packing, Terminal Cover, Unit label
Weight		Approx. 200 g