DESCRIPTION The HIH-5030/5031 Series delivers instrumentation-quality RH The HIH-5030/5031 Series Low Voltage Humidity Sensors (Relative Humidity) sensing performance in a competitively operate down to 2.7 Vdc, often ideal in battery-powered priced, solderable SMD. systems where the supply is a nominal 3 Vdc. The HIH-5030 is a covered integrated circuit humidity sensor. The HIH 5030/5031 complements our existing line of 5 Vdc The HIH-5031 is a covered, condensation-resistant, integrated SMD (Surface Mount Device) humidity sensors. SMD circuit humidity sensor that is factory-fitted with a hydrophobic packaging on tape and reel allows for use in high volume, filter allowing it to be used in many condensing environments automated pick and place manufacturing, eliminating lead including industrial, medical and commercial applications. misalignment to printed circuit board through-holes. The RH sensor uses a laser trimmed, thermoset polymer The HIH-5030/5031 Series Humidity Sensors are designed capacitive sensing element with on-chip integrated signal specifically for high volume OEM (Original Equipment conditioning. Manufacturer) users. The sensing element s multilayer construction provides Direct input to a controller or other device is made possible by excellent resistance to most application hazards such as this sensor s near linear voltage output. With a typical current condensation, dust, dirt, oils and common environmental draw of only 200 A, the HIH-5030/5031 Series is ideally chemicals. suited for many low drain, battery operated systems. Sample packs are available. See order guide. Tight sensor interchangeability reduces or eliminates OEM production calibration costs. FEATURES POTENTIAL APPLICATIONS Operates down to 2.7 Vdc, often ideal in battery-powered Industrial systems where the supply is a nominal 3 Vdc. Air compressors Tape and reel packaging allows for use in high volume pick Battery-powered systems and place manufacturing (1,000 units per tape and reel) Drying equipment Molded thermoset plastic housing HVAC (includes air conditioning, air movement, Near linear voltage output vs %RH thermostats, humidifiers, de-humidifiers, humidistats, Laser trimmed interchangeability enthalpy sensing) Low power design OEM assemblies Enhanced accuracy Office automation equipment Fast response time Process equipment Stable, low drift performance Refrigeration (includes bulk and transport systems) Chemically resistant Telecommunications cabinets Weather stations and meteorology equipment Medical Hospital air compressors Infant incubators Microenvironments Sleep apnea equipment Treadmill stress monitoring equipment Table 1. Performance Specifications (At 3.3 Vdc supply and 25 C 77 F unless otherwise noted.) Parameter Minimum Typical Maximum Unit Specific Note Interchangeability (first order curve) 0% RH to 10% RH, 90% RH to 100% RH -7 7 % RH 11% RH to 89% RH -3 3 % RH Accuracy (best fit straight line) 11% RH to 89% RH -3 +3 % RH 4 Hysteresis 2 % RH Repeatability 0.5 % RH Settling time 70 ms Response time (1/e in slow moving air) 5 s Stability (at 50% RH in 5 years) 1.2 % RH 1 Voltage supply 2.7 5.5 Vdc 2 Current supply 200 500 A Voltage output (1st order curve fit) V =(V )(0.00636(sensor RH) + 0.1515), typical at 25 C OUT SUPPLY Temperature compensation True RH = (Sensor RH)/(1.0546 0.00216T), T in C Output voltage temp. coefficient at 50% RH, 3.3 V -2 mV/ C Operating temperature -40 -40 See Figure 2. 85 185 C F Operating humidity (HIH-5030) 0 See Figure 2. 100 % RH 3 Operating humidity (HIH-5031) 0 See Figure 2. 100 % RH Storage temperature -50 -58 125 257 C F Storage humidity See Figure 3. % RH 3 Specific Notes: General Notes: 1. Includes stress outside of recommended operating zone. Sensor is ratiometric to supply voltage. 2. Device is tested at 3.3 Vdc and 25 C. Extended exposure to >90 % RH causes a reversible shift 3. Non-condensing environment. When liquid water falls on of 3 % RH. the humidity sensor die, output goes to a low rail condition Sensor is light sensitive. For best performance, shield indicating no humidity. sensor from bright light. 4. Total accuracy including interchangeability is 3 %RH. 2 www.honeywell.com/sensing