Outdoor Humidity & Temperature Transmitter – OHT-Series

• Combined Outputs: Humidity and temperature measurements in a single unit.
• Display Options: Available with or without an LCD display for real-time parameter display.
• Output Signals:
  • Humidity: 0-10 Vdc or 4-20 mA.
  • Temperature: 0-10 Vdc or 4-20 mA.
• Optional Passive Temperature Output: PT1000, PT100, NTC 10K, NTC 20K, NTC 1.8K, NI1000, and more.
• Measurement Accuracy:
  • Humidity: ±2% at 20-80% rH.
  • Temperature: ±0.3K (+5°C to 60°C) + 1.5% f.s.
• Selectable Parameters via DIP Switch:
  • Relative Humidity.
  • Absolute Humidity.
  • Dew Point.
  • Enthalpy

Without LCD Display

• OHT 010 010:
  Humidity output 0-10 Vdc, Temperature output 0-10 Vdc.
• OHT 420 420:
  Humidity output 4-20 mA, Temperature output 4-20 mA.
• OHT 010 010 XXX:
  Humidity output 0-10 Vdc, Temperature output 0-10 Vdc.
  XXX means a passive temperature sensing element as example NTC 10K or PT1000
• OHT 420 420 XXX:
  Humidity output 4-20 mA, Temperature output 4-20 mA.
  XXX means a passive temperature sensing element as example NTC 10K or PT1000

With LCD Display

• OHT 010 010 D:
  Humidity output 0-10 Vdc, Temperature output 0-10 Vdc.
• OHT 420 420 D:
  Humidity output 4-20 mA, Temperature output 4-20 mA.
• OPHT 010 010 D XXX:
  Humidity output 0-10 Vdc, Temperature output 0-10 Vdc.
  XXX means a passive temperature sensing element as example NTC 10K or PT1000
• OHT 420 420 D XXX:
  Humidity output 4-20 mA, Temperature output 4-20 mA.
  XXX means a passive temperature sensing element as example NTC 10K or PT1000

• PT100, PT100 1/3 DIN.
• PT1000, PT1000 1/3 DIN.
• NI1000, NI1000/TK5000.
• NTC 1.8K, NTC 5K, NTC 10K, NTC 20K.
• KTY81-210.

Example

For a model with a humidity output of 0-10 Vdc, temperature output of 0-10 Vdc, PT1000 passive temperature sensing element, and an LCD display, the type would be:
OHT 010 010 PT1000 D.

• Outdoor environmental monitoring in HVAC systems.
• Weather stations and environmental control systems.
• Commercial and residential outdoor air quality monitoring.