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Temperature Indicator


24 VDC/24 VAC 50/60 Hz, 5 digit, Input: Temperature (Platinum resistance thermometer/Thermocouple), Event input: 5 point, Comparative output Transistor (HH, H, PASS, L, LL), Transfer output BCD

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

Item list of K3HB-H

  • Ratings/Specifications
Power supply voltage24 VDC
24 VAC 50/60 Hz
Allowable power supply voltage range85 to 110% of the power supply voltage
Power consumption7 W max. (at maximum load)/11 VA max. (at maximum load)
Input typeTemperature (Platinum resistance thermometer/Thermocouple)
Output typeJudgment output: Transistor
Comparative output: HH, H, PASS, L, LL
Transfer output: BCD
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.)
Event inputNumber of input5 point
Input methodNO-Voltage contact/NPN open collector
Event nameTIMMING
Connection methodTerminal blocks
ContactON: 1 kΩ max.
OFF: 100 kΩ min.
No-contactON residual voltage: 2 V max. (TIMING input 3 V max.)
OFF leakage current: 4 mA max. (TIMING input 17 mA max.)
Maximum applied voltage: 30 VDC max.
Leakage current: 0.1 mA max. (TIMING input 1.5 mA max.)
BCD inputInput signal logic: Negative
Input signal: No-voltage contact input (REQUEST/HOLD/MAX/MIN/RESET)
Input current: 10 mA
ON voltage: 1.5 V max.
OFF voltage: 3 V min.
BCD OutputOutput signal name: DATA, POLARITY, OVER, DATA VALID, RUN/HH, H, PASS, L, LL
Maximum load voltage: 24 VDC max.
Maximum load current: 10 mA (DATA, POLARITY, OVER, DATA VALID, RUN)/50 mA (HH, H, PASS, L, LL)
Leakage current: 100 µA max.
Judgment outputTransistor outputNPN open collector
Maximum load voltage: 24 VDC max.
Maximum load current: 50 mA max.
Leakage current: 100 µA max.
DisplayDisplay methodNegative LCD (backlit LED) 7-segment digital display
Digits5 digit (-19999 to 99999)
Character heightPV: 14.2 mm (green/red)
SV: 4.9 mm (green)
Sampling period50 times/second (20 ms)
Comparative output response timePlatinum 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 resistance20 MΩ min. (at 500 VDC)
Dielectric strengthBetween 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 resistanceMalfunction: 10 to 55 Hz, Acceleration: 50 m/s2, 5 min 10 sweeps each in X, Y, and Z directions
Shock resistanceMalfunction: 150 m/s2, 3 times each in 3 axes 6 directions
Degree of protectionFront: NEMA4X for indoor use (equivalent to IP66)
Case rear: IP20
Terminals: IP00 + finger protection (VDE0106/100)
Memory protectionEE-PROM (non-volatile memory) Number of rewrites: 100,000
Ambient temperatureOperating: -10 to 55℃ (with no freezing or condensation)
Storage: -25 to 65℃ (with no freezing or condensation)
Ambient humidityOperating: 25 to 85%
AccessoriesWaterproof packing, Fixtures, Terminal Cover, Unit label, Instruction manual
WeightApprox. 300 g
  • Dimensions

  • Connection diagram

Terminal arrangement

  • Internal connection


Temperature Indicator