Economy Duct and Outdoor Humidity Sensors
HED
HED/HEO Economy Series humidity transmitters offer an array of humidity control solutions at an affordable price. All devices include embedded electronics to protect against condensation. The thin-film capacitive sensor elements provide high accuracy and performance. The duct mounted HED includes a sturdy sheet metal housing. The outdoor HEO incorporates the same reliability as the indoor models into a casing rugged enough to withstand the elements. All Economy models come with a standard one-year warranty.
Reduce Installation Costs with Combination Sensors
• Monitor humidity and temperature with a single device
• Semiconductor, temperature transmitter, or popular thermistor/RTD sensors available
• Circuitry is embedded in the probe for durability and protection
Select a link under the "item" tab below to order.
| Table 1 | Table 2 | Table 3 | Table 4 | Table 5 | Table 6 | Table 7 | Table 8 |
| X | X | X | X | X | X | X | X |
| Table 1 | Sensor Type |
| N | 1800 ohm TAC, Thermistor |
| D | 10k T2, Thermistor |
| E | 2.2k, Thermistor |
| F | 3k, Thermistor |
| G | 10k CPC, Thermistor |
| H | 10k T3, Thermistor |
| J | 10k Dale, Thermistor |
| K | 10k with 11k shunt, Thermistor |
| M | 20k NTC, Thermistor |
| C | 1k Platinum, RTD |
| Q | 1uA/˚C, Linitemp |
| R | 10k US, Thermistor |
| S | 10k 3A 221, Thermistor |
| T | 100k, Thermistor |
| U | 20k “D”, Thermistor |
| B | 100R Platinum, RTD |
| A | Transmitter |
| Table 2 | Temp Cert |
| 1 | 1pt Cal |
| 2 | 2pt Cal |
| 2 | 2pt Cal |
| 1 | 1pt Cal |
| Table 5 | Output |
| V | 0-10VDC / 0-5VDC |
| M | 4-20mA |
| Table 7 | Temp. |
| X | No Temp (Stop here) |
| T * | Temp |
| Table 8 | Temp Range |
| 2 | 0° to 50°C (32° to 122°F) |
| 1 | -40° to 50°C (-40° to 122°F) |
| Input Power: |
4-20mA version; loop powered 12-30VDC only, 30mA max.; 0-5V/0-10V versions;
12 (15 for 0-10V) to 30VDC/24VAC, 15mA max |
HS Element :
|
Digitally profiled thin-film capacitive, non removable |
| Accuracy at 25°C from 10-90% RH: |
±3% or 5% |
| Reset Rate: |
24 hours |
| Stability: |
±1% @ 20°C (68°F) annually, for two years |
| Operating Humidity Range: |
0 to 100% RH (non condensing) |
| Temperature Effect: |
Voltage Versions: (0.0015%RH(T°C-25))+(%RH0.0008abs(T°C - 25)
mA Versions: (0.0013x%RH(T°C - 25) |
| Analog Output: |
4-20mA version: 2-wire, polarity insensitive, (clipped and capped)
0-5V/0-10V versions: 3-wire, observe polarity |
| Scaling: |
0-100% RH |
| Operating Temperature Range: |
-40° to 50°C (-40° to 122°F) |
Optional Temperature Output
Transmitter Models: |
Digital 0-5V/0-10V output; accuracy ±1.3°C |
| RTD Models: |
Customer specified thermistor, or RTD |
