Resistive RH Sensor
SYH-2R
Features
- Wide range of applications
- Excellent Reliability
- Water Resistance
- RoHS Compliant
- Interchangeability
Application
Energy Saving HVAC Control
Air Conditioning, Refrigeration, IAQ monitoring, Vent Fans, Home Appliances, Humi/Dehumidifiers
Process Control & Instrumentations
Medical Instruments, Handheld Devices, Weather Stations,Food Processing, Printers, RFIDs
Product Summary
Industrial grade resistance type humidity sensor: SYH-2R offers cost effective and convenient humidity measurement.
While maintaining the attractive features such as no-calibration requirement and high interchangeability of resistive type humidity sensor: SYH-1, SYH-2R widens the scope of applications to home appliances, HVAC, and automotive.
Coated with patented polymer, SYH-2R can be used in demanding environments (-20°C~85°C) with frequent condensing and chemical vapors.
SYH-2R can be directly connected to µ-com with ADC or RFC converting resistance changes to either voltage or frequency. It can also be modularized to voltage output with oscillator.
Electrical Characteristics
| Min | Spec | max | |
| Rated voltage (VRMS) | 1 | 3.536 | |
| Rated power (㎽) | 0.26 | ||
| Standard characteristics (㏀) | 33 | ||
| Operating temperature (℃) | -20 | 85 | |
| Operating humidity (%RH) | 10 | 95 | |
| Operating Frequency (㎑) | 0.1 | 10 | |
| Storage temperature (℃) | -40 | 85 | |
| Storage humidity (%RH) | 95 | ||
| Accuracy (%RH) | -3 | 3 | |
| Hysteresis (%RH) | -2 | 2 | |
| Response time (T80, sec.) | 45 | ||
| Temperature coefficient (%RH/℃) | -0.5 |
Reliability
| Test | Condition |
|---|---|
| HTS | 85℃, 1000hrs |
| LTS | -30℃, 1000hrs |
| THB | 85℃, 85%RH,1000hrs, Bias |
| HC | 30↔90%RH, 25℃, 100 times |
| TC | -30↔85℃, 100 times |
| Organic solvent | Benzene, Xylene, Toluene, 300hrs |
| M/C(drop) | 100cm drop, 3 times |
| Vibration | X-Y-Z, 10~55㎐, 2hrs |
| Soldering heat | 260±5℃, 3 sec. |
| Tensile | 500g(4.9N), 10 sec. |
Resistive RH Sensor Module
SY-HS-25NT
Features
- High Reliability & Excellent Life span
- Outstanding Durability
- Wide Operating Temp. Range
- Interchangeability
- Availability of Customized products
Description
A resistive humidity sensor, SY-HS-25 Series, is composed of excellent durable resistive sensor and a thermistor for temperature compensation and offers cost competitiveness and convenience for humidity measurement.
This module uses specially consolidated polymer and is designed for industrial environment that includes both temperature environment (-20~85℃) and humidity environment with dew condensation and gases. In addition, it can be used without calibration so that replacement of sensor is easy and convenient.
Relative Humidity (%RH)
| Humidity Characteristics | Symbol | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Standard Characteristic (at 25℃, 60%RH,1Vrms, 1 kHz) |
33 | KΩ | |||
| Operating Frequency Range | 0.1 | 10 | kHz | ||
| Relative Humidity Accuracy (at 25℃, 60%RH) |
±3 | %RH | |||
| Humidity Hysteresis (at 25℃, 40⇔80%RH) |
±2 | %RH | |||
| Response Time (40⇔80%RH)) | 60 | sec | |||
| Temperature Coefficient | Tcc | 0.5 | %RH/℃ | ||
| Temperature Coefficient | Tcc | -0.05 | %RH/℃ |
Temperature (℃)
| Temperature Characteristics | Symbol | Min. | Typ. | Max. | Unit | |
|---|---|---|---|---|---|---|
| Temperature Measuring Range | Ta | -40 | 120 | ℃ | ||
| Nominal Resistance @25℃ | R | 47.5 | 50 | 52.5 | ㏀ | |
| Beat Value : B25/85 | B | 4500 | K | |||
| Normal Resistance Tolerance @℃ | T | ±5 | % | |||
| B Value Tolerance | B | ±3 | % | |||
Dew Sensor
SY-DS-1L
Features
- Small, Light
- High sensitivity under high-humidity condition
- Switching function
- Quick response
- High reliability and stability
Description
SY-DS-1 Series, dew sensor, is a resistive type sensor which detects condensation risk in advance. The sensor only responds to high humidity environment regardless of temperature environment, and it is a switch-type sensor whose impedance value changes abruptly in a high humidity environment.
It has an excellent reaction rate, no temperature dependence, and is water resistant, easy to implement and simple to use.
Two types of the product are available upon request – 1) Lead pin type 2) Harness type
Sensor Performance
| Rated voltage | DC AC 0.8V Max. |
|---|---|
| Operating temperature range |
0℃ ~ ±60℃ |
| Operating Humidity range |
0%RH ~ 100%RH |
| Storage Condition range |
-20℃ ~ 85℃ |
| Standard characteristic |
a) 10㏀ Max. at 80%RH b) 100㏀ Max. at 94%RH C) 200㏀ Max. at 98%RH |