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Temperature/RH Conditioner/Transmitter Probe w/ 4 Output Options

Relative Humidity/Ambient Temperature Transmitters


Item# HX94BC

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 $532.43
5-9 $505.81
10-24 $495.16
25-49 $473.86
50-99 $463.21
100+ $452.57

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Lead Time (If not in stock): 6 weeks
Relative Humidity/Ambient Temperature Transmitters HX94BC HX94BC
  • RoHS Certified
  • Accurate to ±2.5% Relative Humidity and ±0.6°C (±1°F) Temperature
  • Two Separate Analog Outputs, Humidity and Temperature
  • Four Analog Outputs available, 4 to 20 mA, 0 to 1V, 0 to 5V, 0 to 10V

HX94BC Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

Output Type
Supply Voltage Type
Additional Feature
Input Type
Input Ranges

The OMEGA™ HX94B Series temperature/relative humidity transmitter provides a linearized and temperature compensated output signal of 4 to 20 mA, 0 to 1 Vdc, 0 to 5 Vdc or 0 to 10 Vdc depending upon the model selected for both temperature/relative humidity measurement. The output signals have been calibrated and scaled to 0 to 100°C for temperature and 0 to 100% for relative humidity. The digital temperature and relative humidity sensor is protected by a stainless steel cap that is easily removed for cleaning. The NEMA 4 stainless steel enclosure and cable entry connection provides weather tight protection. The stainless steel enclosure terminates to a 6 feet shielded cable. The cable end is either stripped leads or terminates to a 4-pin connector.


Measuring Range: 0 to 100°C (32°F to 212°F)
Accuracy: ±0.6°C from 0 to 50°C (32 to 122°F), ±1.25°C from 50 to 100°C (122 to 212°F), for all models except:
    HX94BC,HX94BCNPT,HX94BCW: ±1.2°C from 0 to 50°C (32 to 122°F); ±1.9°C from -30 to 0°C (-22 to 32°F) and 50 to 75°C (122 to 167°F)
Repeatability: ±0.2°C (0.4°F)
Response Time: 5 seconds minimum, 30 seconds maximum
Sample Rate: 1 sample every 4 seconds
Relative Humidity
Measuring Range: 0 to 100% RH
Accuracy: ±2.5 % from 20 to 80% RH, ±3.5% from 5 to 20% and 80 to 95% RH, ±4% from 0 to 5% and 95 to 100% RH
Hysteresis: ±1%RH
Repeatability: ±0.1%RH
Response Time: 8 seconds typical
Sample Rate: 1 sample every 4 seconds
Operating Temperature Range: 0 to 100°C (32 to 212°F)
Analog Outputs for Temperature and Humidity: 4 to 20 mA, 0 to 1V, 0 to 5V, 0 to 10V
Input Power Supply: 9 to 30 Vdc @ 100 mA: 4 to 20 mA, 0 to 1V, 0 to 5V output, 12 to 30 Vdc @ 100 mA: 0 to 10V output
Max Current Loop Resistance: Ω = [(V supply - 4V)/0.02A)] -50; 200Ω @ 9V supply or 1250Ω @ 30V supply
Max Load Resistance: 1.25K (for all voltage outputs)
Sensor Type: Digital sensor
Enclosure Housing: 316 stainless steel, NEMA 4; non-NPT version includes IP68-rated cable gland
Electrical Connections:
    HX94B**W, HX94B**NPT: 1.8 m (6') 4 conductor PTFE shielded cable with stripped leads termination
    HX94B**: 1.8 m (6') 4 conductor PTFE shielded cable with a 4-pin connector termination; a 4-pin mating connector is included that accepts 18 to 26 AWG wire
Dimensions: 258 L x ø19 mm OD (10.15 x 0.75")
Weight: 200 g (7 oz) with mounting kit
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Rated 5 out of 5 by from Excellent unit as always Great unit for Temp and rH. Installation document made the code development easy by providing the equations for conversion.
Date published: 2019-02-19
Rated 5 out of 5 by from EXCELLENT VALUE working great so far! IF NEEDED WILL PURCHASE AGAIN
Date published: 2018-04-24
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Manual says humidity can be calculated using specific equations corresponding to a specific output voltage. What equations should one use if the voltage reading is 1.1 Volts or 0.9 Volts. Also, what should be the operating input voltage for the HX94B?

Asked by: AminB
Hi AminB, The HX94B series includes 3 models with voltage output. HX94BV0, HX94BV1, HX94BV2. Manual provides the correlation between voltage and RH/Temperature levels. Best regards OMEGA
Answered by: NorwalkAE_RS
Date published: 2023-05-09

Which model withstand a temperature range from -10C to +85C, also capable to read from zero to 100%RH, water proof. We have been using the model HX71-V1

Asked by: Hilario Barboza
Hi Hillario, Thank you for the inquiry. Unfortunately this series is not designed for condensing humidity environment. We do not offer compatible alternate sensor for wet environments. Best regards OMEGA
Answered by: NorwalkAE_RS
Date published: 2023-02-18

The manual states that for a 0-1V output and 0-5V output, the input power supply must be between 9-30 Vdc at 100 mA. These formulas for humidity provide different results. Which formula would be more accurate for a 0.99 V output or 1.1 V output.

Asked by: AminB
Thank you for your inquiry. For a 0.99 V output you will need to use the 0-1 V formula. For a 1.1 V output, you will need to use the 0-5 V formula. If you have any questions, please call 1-888-826-6342, ask for Temperature Engineering and speak to one of our temperature engineers over the phone.
Answered by: Application Engineer MC
Date published: 2023-05-10
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4-Core 7/0.2 mm screened cable white, red, green & black with drain wire, 30 metres
34 In Stock
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