Product guide

49
Humidity and Dew-Point Instruments
Please note: Michell Instruments adopts a continuous development program which sometimes
necessitates specifi cation changes without notice. Please contact us for latest version.
www.michell.com
Precision Manufacturing
Dimensions
DT282
Digital Relative Humidity and Temperature Transmitter - Duct Mount
Accessories and Spare Parts
RS422/485 to PC (RS232) converter 330185
USB cable/software for confi guration F035263
Al mounting fl ange for ø19mm (0.75") SS probes FLA019
SS sintered fi lter H2
SS sintered fi lter with tefl on coating J2
AISI 316 cap slotted with SS mesh fi lter K6
SS cap slotted with PTFE fi lter Z6
Hygrosmart with Pt100 output (RH = 0-1 V) I7-0-00-1
You can check your hygrometer with the Control Kit HKC which
is based on the principle of non-saturated salt solutions. Refer to
technical data sheet CONTROL KIT
HKC
The DT282 relative humidity transmitter includes the
interchangeable Hygrosmart module. The interchangeable
module lets you recalibrate the transmitter simply by
replacing the sensor head with the Hygrosmart module. As a
result, maintenance costs are greatly reduced and down-time
is minimized.
Highlights
• Analog and digital output standard
• Based on the interchangeable Hygrosmart module
• Analog output signals selectable through software
• Metric or US measurement units selectable through
software
Technical Specifi cations
Performance
Measurement range (RH) 0–100% RH
Measurement range (T) -30 to +70°C (-22 to +158°F)
Accuracy at 23°C (73°F)
Humidity
<±2% RH (5–95% RH)
Accuracy at 23°C (73°F)
Temperature
±0.4°C (±0.72°F)
Stability – RH Sensor <±1% RH/year
Response time – RH Sensor <10 sec typical (for 90% of the step change)
Electrical output/input
Output signal 0–1, 0–5, 0–10 V
0–20 mA, 4–20 mA, RS485
Supply voltage 15 - 27 V AC / 18 - 38 V DC
Load resistance Current output: R  500 
Power consumption 1.7 W
Operating conditions
Operating temperature
Probe
Housing
Storage
-30 to +85°C (-22 to +185°F)
-30 to +70°C (-22 to +158°F)
-40 to +70°C (-40 to +158°F)
Mechanical specifi cation
Ingress protection IP67
Material
Housing
Probe
Aluminum die casting
Stainless steel AISI 316
Dimensions
Housing
Probe
120 x 120 x 49.5mm
(4.72 x 4.72 x 1.94”)
L=250/500mm ø19mm
(L=9.84/19.68” ø0.74”)
Weight 450g (15.87oz)
Electrical connections Screw terminals
INTERCHANGEABLE
MODULE
HYGROSMART ®
Issue No: DT282_97189_V2_UK_1110