Duct Humidity Sensor – Deluxe - NIST- HED2MSTA1

Duct Humidity Sensor NIST- HED2MSTA1 Applications:

Managing energy systems

Controlling HVAC systems to improve comfort and save energy

Libraries, schools, print shops, and other places requiring humidity control

Facilitating compliance with ASHRAE environmental control and indoor air quality standards

 

Humidity sensing in harsh environments

Thin-film polymer capacitive sensor element with 100% saturation recovery

Field replaceable element... maintains accuracy and minimizes downtime

 

Rugged industrial design

Sensor element maintenance without disturbing the duct

Non-polarized analog output... flexible system compatibility

HS element is a microprocessor built on board non-volatile memory

Minimizes field calibration downtime

Duct Humidity Sensor NIST- HED2MSTA1Specifications:

HS element digital shaped thin-film capacitor (32-bit math) U.S. Patent 5,844,138

Accuracy: 25°C from 10-80% RH ±1%; multi-point calibration, NIST traceable

Reset rate: 24 hours

Stability: ±1% @ 20°C (68°F) per year, two years

Operating humidity range: 0~100% RH (non-condensing)

Hysteresis: 1.5% typical

Linearity included in accuracy specification

Temperature coefficient: ±0.1% RH/°C above or below 25°C (typical)

Analog output: 4-20 mA, 2-wire, non-polarized (peak & hold)

Range: 0-100% RH

Operating temperature range: -40° ~ 50°C

Input: loop powered only 12-30VDC, max 30mA

Temperature transmitter output signal: 4-20mA (peak & hold) or 0-5V/0-10V output;
Transmitter accuracy: ±0.5°C (1.0°F) typical

EMC certification – CE Option EN 50081-1, EN 50082-1, EN 61000-4-4, EN 61000-4-5, EN 61000-4-3, ENV 50204, EN 61000-4-6