Configured for direct thermocouple and RTD signal digitizing in process instrumentation loops, the Omron K3HB-HTA 100-240VAC (K3HB-H Temperature Indicator Base Unit) provides direct physical/electrical execution.

Model Suffix & Configuration Structure

• K3HB: Digital Process Indicator Base Hardware Series
• H: Dedicated High-Speed Temperature Measurement Sub-Class
• TA: Dual Input Capability for Thermocouple and Platinum Resistance Thermometer Sensor Signals
• 100-240VAC: Nominal System Operating Voltage Supply Range

Hardware Specifications

DeviceNet Fieldbus Integration & Firmware Flash Protocols

The indicator unit digitizes analog millivolt and resistance sensor curves through internal analog-to-digital converters, formatting values for local visualization or network transmission. During DeviceNet bus initiation, internal firmware flash compatibility registers synchronize bus scan frequencies and data framing profiles with the master controller to prevent communication timeouts across PLC rack networks.

Standard Delivery Configuration

• 1 x Omron K3HB-HTA 100-240VAC Base Indicator Unit
• 2 x Panel Mounting Adapter Brackets
• 1 x Watertight Rubber Packing Gasket
• 1 x Instruction Manual

Panel Mounting & Wiring Guidelines

• Cut a standard DIN panel opening and insert the indicator housing from the front panel face, securing it with supplied mounting brackets.
• Ensure the watertight rubber gasket is aligned properly behind the front bezel to maintain enclosure protection against dust and splash.
• Keep thermocouple lead wires and RTD extension lines routed separately from high-voltage AC lines to minimize electromagnetic noise pickup.
• Connect a solid low-impedance copper ground conductor to the earth terminal to stabilize internal reference planes.

Frequently Asked Questions

• What sensor types are compatible with the TA input code hardware?

  The unit accepts Pt100 RTD sensors alongside thermocouple types K, J, T, E, L, U, N, R, S, B, and W.

• How are process values displayed on the front operator interface panel?

  Values display on a negative 7-segment LCD with green/red LED backlighting (PV: 14.2 mm, SV: 4.9 mm).

• What is the rated line voltage supply range for this indicator model?

  The unit operates on an AC power supply input rated from 100 to 240 VAC.

• What current load does the unit draw across DeviceNet network power lines?

  The DeviceNet auxiliary interface draws a maximum current consumption of 50 mA at 24 VDC.

• How does internal firmware flash compatibility affect PLC network operation?

  The unit exchanges flash-based revision profiles during startup to ensure synchronized DeviceNet loop communication.

• What thermal and humidity limits apply during active panel operation?

  Operating ambient temperature covers -10 to 55 deg C with relative humidity between 25% and 85%.

• What is the net physical weight of the base indicator hardware module?

  The indicator module has a net physical weight of 0.3 kg (shipping weight 1.5 kg).

• How should field signal wiring be isolated to avoid noise corruption?

  Route low-level thermocouple and RTD signal cables in dedicated grounded conduits away from AC motor power leads.