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Temperature Indicator


24 VDC/24 VAC 50/60 Hz, 5 digit, Input: Temperature (Platinum resistance thermometer/Thermocouple), Transfer output RS-232C

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
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)
External power supply12 VDC ±10% 80 mA
Input typeTemperature (Platinum resistance thermometer/Thermocouple)
Output typeTransfer output: Communications (RS-232C)
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.)
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)
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
Serial communication
Communication methodRS-232C Half duplex
Synchronization methodStart-stop synchronization (asynchronous method)
Baud rate9600/19200/38400 bps
Transmission codeASCII
Data length7 bits or 8 bits
Stop bit length2 bits or 1 bit
Error detectionVertical parity and FCS
Parity checkOdd, Even
  • Dimensions

  • Connection diagram

Terminal arrangement

  • Internal connection


Temperature Indicator