Optidew Sensor; Table 1 Sensor Capabilities; Table 2 Sensor Body Materials - Michell Instruments Optidew User Manual

INTRODUCTION
1.2

Optidew Sensor

Optidew Series' sensors are available with either single stage, or dual stage peltier
devices, and with a variety of different sensor body and mirror materials. The following
tables show the capabilities of each sensor type:
Available sensor body materials
Approximate maximum depression
Equivalent % RH range
Sensor temperature 20°C (68°F)
With additional cooling
Maximum Temperature
All sensor variants are available in high pressure versions, able to operate in pressure
up to 250 barg (3600 psig).
2
Optidew Series User's Manual
Single Stage
Acetal
55°C (99°F)
2 to 100%
Lowest Measureable Dew Point
-30°C (-22°F) -40°C (-40°F)
-40°C (-40°F) -50°C (-58°F)
Table 1 Sensor Capabilities
Acetal
+90°C (+194°F)
Table 2 Sensor Body Materials
Dual Stage
Dual Stage
Metal Body
Acetal Aluminum
PEEK Stainless steel
65°C (117°F) 45°C (81°F)
0.5 to 100% 4 to 100%
PEEK
Stainless Steel
Aluminum
+130°C (+266°F)
97430 Issue 2, March 2017
-20°C
N/A