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MAMAC Systems HU-921-VDC-12 Humidity Temperature Sensor 10K Ohm NTC 3% RH

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Special Price $64.43 Regular Price $74.09
Out of stock
SKU
HU-921-VDC-12
The MAMAC Systems HU-921-VDC-12 Humidity-Temperature Sensor is an essential component of an HVAC system and works the measurement of relative humidity and temperature with the help of a highly sensitive 10K Ohm NTC thermistor and measures humidity with the help of a capacitive sensing element that is sensitive to changes in the moisture content in the air. Depending on the change in humidity, the capacitance also changes and produces an electrical signal which is further processed to give an accurate RH reading with an accuracy of 3% and measures changes in temperature.
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HVAC Controls & Electrical, Control & Sensing Devices
Manufacturer:
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Specifications

  • Type: Humidity-Temperature Sensor
  • Resistance: 10K Ohm
  • Accuracy: 3% RH
Manufacturer Name: MAMAC Systems
Product Number: HU-921-VDC-12
OEM Part Number: HU-921-VDC-12
Product Description: 3%Rh Hum/Temp 10K Ohm Ntc Sen
Weight:0.17lbs/77.11g

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Product Questions (2)
Customer Questions
What maintenance is required for the MAMAC Systems HU-921-VDC-12 Humidity Temperature Sensor?

Inspect and recalibrate sensor periodically to ensure accurate humidity and temperature readings. Clean sensing element gently to remove dust or condensation buildup. Check wiring connections for corrosion or looseness during HVAC maintenance cycles to maintain stable output signals.

What are common issues with the MAMAC Systems HU-921-VDC-12 Humidity Temperature Sensor?

  • Sensor drift causing inaccurate humidity or temperature readings over time.
  • Moisture intrusion affecting response stability in harsh conditions.
  • Wiring faults or loose terminal connections during operation.
  • Condensation buildup leading to erratic output signals in ducts.

Installation Steps

Step 1: Disconnect power to the HVAC system before installation.

Step 2: Select a mounting location in the fresh air hood, return air duct, or discharge air duct with adequate airflow.

Step 3: Secure the sensor using the mounting bracket and proper hardware.

Step 4: Connect the wiring to the designated power and signal terminals according to the system wiring diagram.

Step 5: Verify all connections are tight and protected from moisture exposure.

Step 6: Restore power and confirm accurate humidity and temperature readings through the control system.