Model Dew-10
露點溫度傳訊器
特 點:
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鏡面冷凝光學式露點感應器,
測試準確性±0.5ºC. |
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具有鏡面檢查功能可免除經常性的校正手續 |
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最基本且實用的露點偵測儀器,
可同時量測溫度 |
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感應器使用壽命可達
5~10 年,
經濟性優於各種濕度感應器 |
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採用 RTD-100W
環境溫度感應元件
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儀器規格:
測試範圍: -40ºC~
+70ºC 露點 (10~90% RH)
0 ~
+60ºC 環境溫度
準 確 性: ±0.2ºC
露點溫度,
±0.2ºC
環境溫度
再 顯 性: ±0.05ºC
以內
承受壓力: 10呎水柱壓力 (Pipe & Duct type)
試樣流速: 500 ~ 3,000呎分鐘(Pipe & Duct type)
使用電壓: 24VDC or 115/220VAC
輸出訊號: 4~20mADC or 1~5VDC. 100Ohm PRT
螺牙型式: 1" NPT (pipe mount type)
Model Dew-10
The Dew-10 Series is a family of low cost, high
performance chilled mirror dew point transmitters comprising pipe, duct,
and wall mount models. All models provide accurate and reliable dew point
measurements over a wide range for energy management and process
applications.
Accuracy for the series is ±0.5ºC (±1ºF). Dew
point may be measured over a range of -40º to +58ºC (-40º to +136ºF). The
wall mount version is also available with an optional air temperature
measurement capability over the same range.
In the Dew-10 sensor, a
miniature heat pump cools a metallic mirror. When the mirror temperature
reaches the dew point of the surrounding air, a thin dew layer condenses
on the mirror surface. This condensation is optically detected. A feedback
loop keeps the mirror at the exact dew point by continuously controlling
the mirror temperature. A precision RTD (Resistance Temperature Detector)
is imbedded just beneath the surface of the mirror, allowing the dew point
temperature to be accurately measured.
Maintenance is easy. Ambient
temperature effects, hysteresis, and calibration drift with age are
virtually non-existent. Filter replacement and cleaning the mirror with a
cotton swab restores the transmitter to its original
condition.
原廠目錄下載
(PDF Format, 2 pages, 95 KB.)
Chilled
Mirror Dew Point Transmitter, Model DEW-10
Ordering Information:
DEW-10-xxx
Power:
0 - 24VDC (std)
1 - 24VAC
2 - 115VAC
3 - 230VAC
Output Signal:
A - PRT direct (100 Ohm
0°C)
B - 4…20mA (15VDC) 0…100°F
C - 4…20mA (15VDC) 0…50°C
D - 4…20mA (15VDC) 40…140°F
X - 4…20mA (15VDC) user specified
Mounting:
0 - Wall
0 - Wall with Temperature*
1 - Duct
2 - Pipe |
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Features:
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Fundamental dew point measurement |
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High Accuracy |
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Wide operating range |
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Low-cost design |
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Outputs:
dew point and optional ambient air temperature.
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Wall Mount
Performance:
Accuracy: ±0.5ºC (±1.0ºF)
Repeatability: ±0.05ºC (±0.1ºF)
Hysteresis:
None
Functional
Output:
Dew
Point: Platinum RTD, 4
wire, 100 ohms at 0ºC (DIN) 4-20 mA (1-5 VDC) optional
Ambient Air Temp.: Platinum RTD, 4 wire, 100 ohms at 0ºC (DIN) 4-20 mA (1-5
VDC)
optional
Power Supply Voltage
Options: 24 VDC (12-35 V),
load dependent; 115 VAC, 50-60 Hz (100-120V); 24 VAC, 50-60 Hz (22-26 V);
230 VAC, 50-60 Hz (200-240 V); 10 watts maximum
Operating
Conditions
Sensor:
Dew
Point: -24 to +58ºC (-10 to +136ºF)
Ambient Temperature: 0º to +60ºC (+32º to
+140ºF)
Equivalent
RH: 10% to 90% at 26º C(80ºF)
Pressure: Ambient
Air
velocity: still air
Physical
Weight:
2.5 kg. (5.0 lb.)
Pipe/Duct
Mount
Performance:
Accuracy: ±0.5ºC
(±1.0ºF)
Repeatability:
±0.05ºC (±0.1ºF)
Hysteresis: None
Functional
Output:
Dew Point:
Platinum RTD, 4 wire, 100 ohms at 0º (DIN) 4-20 mA
(1-5 VDC) optional
Power Supply Voltage
Options: 24 VDC (12-35 V),
load dependent; 115 VAC, 50-60 Hz (100-120V); 24 VAC, 50-60 Hz (22-26 V);
230 VAC, 50-60 Hz (200-240 V); 10 watts maximum
Physical
Weight: 2.5 kg. (5.0
lb.)
Mounting Options
Duct mount plate
(std.): Attaches to duct and allows easy
installation and removal using wing nuts.
Pipe
mount compression fitting: (1" NPT to 1"
compression) standard.
Operating
Conditions
Sensor:
Dew
Point: -40 to +68ºC (40 to +155ºF)
Ambient Temperature: 0º to +70ºC
(+32º to +160ºF)
Equivalent RH: 10% to 90% at 26º C(80ºF)
Pressure: 3m (10 ft) water column
Duct Air velocity: 150 to 900 m/min
(500 to 3,000 ft./min)
Electronics: Ambient Temperature: 0º to +50ºC
(+32º
to +122ºF)
Ordering Information:
- * For wall
mount with air temperature select
two output modules, one for dewpoint, one for
temperature.
- Example: DEW-10-2B1 = Duct Mounted
Transmitter with 4-20mA dew point output
(0 ~ 100°F) and 115VAC power supply.
- Example: DEW-10-0BB0 = Wall Mounted
Transmitter with dual 4-20mA (dew point &
temperature) and 24VDC power supply. |
鏡面冷凝式露點傳訊器
/ Chilled Mirror Dew Point
Transmitters 