K3HB-HTA-C2 AC/DC24

Temperature Indicator

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Temperature Indicator, Thermocouple input/Platinum-resistance thermometer input, Relay contact output (HH/H/LL/L: SPST-NO each), 24 VAC/VDC

Power supply voltage	24 VDC 24 VAC 50/60 Hz
Input type	Temperature (Platinum resistance thermometer/Thermocouple)
Digits	5 digit (-19999 to 99999)

Item list of K3HB-H

Ratings/Specifications
Dimensions
Connection diagram
Internal connection

Ratings/Specifications

As of July 25, 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		7 W max. (at maximum load)/11 VA max. (at maximum load)
Input type		Temperature (Platinum resistance thermometer/Thermocouple)
Output type		Judgment output: Contact Comparative output: HH, H, L, LL
Temperature measurement input (Accuracy)		Platinum resistance thermometer: (±0.2% PV or ±0.8 ℃ whichever is larger) ±1 digit max. Thermocouple: (±0.3% PV or ±1 ℃ whichever is larger) ±1 digit max. Conditions: (23±5 ℃) (The indication accuracy of K, T and N thermocouples at a temperature of -100 ℃ max. is ±2 ℃ ±1 digit max. U and L thermocouples 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. W thermocouples is (±0.3% PV or ±3 ℃, whichever is greater) ±1 digit maximum.)
Judgment output	Contact output	HH, H, L, LL (SPST-NO) Rated load: Resistive load: 250 VAC 5 A (cosφ=1)/30 VDC 5 A (L/R＝0 ms), Inductive load: 250 VAC 1 A (Close cosφ=0.4)/30 VDC 1 A (L/R＝7 ms) Life expectancy: 100,000 operations (Electrical)/5,000,000 operations (Mechanical)
Display	Display method	Negative LCD (backlit LED) 7-segment digital display
	Digits	5 digit (-19999 to 99999)
	Character height	PV: 14.2 mm (green/red) SV: 4.9 mm (green)
Sampling period		50 times/second (20 ms)
Comparative output response time		Platinum resistance thermometer input ranges: 120 ms max. Thermocouple input ranges: 180 ms max. (time until the comparative output is made when there is a forced sudden change in the input signal from 15% to 95% or 95% to 15%.)
Insulation resistance		20 MΩ min. (at 500 VDC)
Dielectric strength		Between the entire external terminal and case: 2,300 VAC 1 min
Noise immunity		±1,500 V at power supply terminals in normal or common mode (waveform with 1-ns rising edge and pulse width of 1 µs/100 ns)
Vibration resistance		Malfunction: 10 to 55 Hz, Acceleration: 50 m/s², 5 min 10 sweeps 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: NEMA4X for indoor use (equivalent to IP66) Case rear: IP20 Terminals: IP00 + finger protection (VDE0106/100)
Memory protection		EE-PROM (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 %
Accessories		Waterproof packing, Fixtures, Terminal Cover, Unit label, Instruction manual
Weight		Approx. 300 g