DWYER HHT-IU防爆溫濕度變送器
The SERIES HHT Hazardous Area Humidity/Temperature Transmitter takes accurate measurements in the harshest of environments. The explosion-proof model is offered with 4 to 20 mA output for humidity only. The intrinsically safe version is offered with 4 to 20 mA output for humidity and temperature, and do require an intrinsically safe barrier to meet hazardous area approvals. It is important to develop a routine schedule for replacing the RH/temperature sensor (part number A-451). The sensor should be replaced annually or sooner depending on application conditions.
Relative Humidity Range:
0 to RH.
Temperature Range:
-40 to 140°F (-40 to 60°C).
Accuracy:
±2% 10 to 90% RH, ±0.9°F at 72°F (±0.3°C at 25°C).
Hysteresis:
±1%.
Repeatability:
±0.1% typical.
Temperature Limits:
-40 to 140°F (-40 to 60°C).
Storage Temperature:
-40 to 176°F (-40 to 80°C).
Compensated Temperature:
-40 to 140°F (-40 to 60°C).
Power Requirements:
For instrinsically safe models HHT-IX, 9.5 to 28 VDC. For explosion-proof models HHT-EX, 16.5 to 28 VDC.
Output Signal:
4 to 20 mA, 2 channels for humidity/temperature models (loop power on RH).
Response Time:
15 s.
Electrical Connections:
Screw terminal block.
Conduit Connection:
1/2" female NPT.
Drift:
<1% RH/year.
RH Sensor:
Capacitance polymer.
Temperature Sensor:
Solid state band gap.
Housing Material:
Aluminum.
Display:
Optional 2 line alpha numeric, 8 characters/line. Temperature display is °F/°C selectable.
Display Resolution:
RH: 0.1%; Temperature: 0.1°F (0.1°C).
Weight:
2 lb 8 oz (1134 g).
Enclosure Rating:
NEMA 4X (IP66). Models HHT-EX: FM Explosion-proof, Class I Div. 1 Group B, C, D, Class II Div. 1 Group E, F, G, Class III Div. 1; Models HHT-IX: FM Instrinsically Safe, Class I Div. 1 Group A, B, C, D, Class II Div. 1 Group E, F, G, Class III Div. 1 T4.
Agency Approvals:
FM, CE.
| Model | Description |
|---|---|
| HHT-EU | Explosion-proof humidity transmitter. |
| HHT-EU-LCD | Explosion-proof humidity transmitter with LCD display. |
| HHT-IT | Intrinsically safe humidity/temperature transmitter. |
| HHT-IT-LCD | Intrinsically safe humidity/temperature transmitter with LCD display. |
| HHT-IU | Intrinsically safe humidity transmitter. |
技術(shù)參數(shù)
相對濕度范圍: 0 to RH.
溫度范圍: -40 to 140°F (-40 to 60°C).
精度: ±2% 10-90% RH, ±0.9°F at 72°F (±0.3°C at 25°C).
滯后: ±1%.
重復(fù)性: ±0.1% typical.
溫度范圍: -40 to 140°F (-40 to 60°C).
儲存溫度: -40 to 176°F (-40 to 80°C).
補償溫度: -40 to 140°F (-40 to 60°C).
電源: For instrinsically safe models HHT-IX, 9.5 to 28 VDC.Forexplosion-proof models HHT-EX, 16.5 to 28 VDC.
信號輸出: 4-20 mA, 2 channels for humidity/temperature models(looppower on RH).
響應(yīng)時間: 15 seconds.
電氣連接: Screw terminal block.
管路連接: 1/2" female NPT.
漂移: <1% RH/year.
RH 傳感器: Capacitance polymer.
溫度傳感器: Solid state band gap.
外殼材質(zhì): Aluminum.
顯示: Optional 2 line alpha numeric, 8 characters/line.Temperaturedisplay is °F/°C selectable.
顯示分辨率: RH: 0.1%: Temperature 0.1°F (0.1°C).
重量: 2 lb 8 oz (1134 g).
封裝: NEMA 4X (IP66). Models HHT-EX: FM Explosion-proof, Class IDiv.1 Group B, C, D, Class II Div. 1 Group E, F, G, Class III Div.1;Models HHT-IX: FM Instrinsically Safe, Class I Div. 1 Group A,B,C, D, Class II Div. 1 Group E, F, G, Class III Div. 1 T4.
認證: FM, CE.
DWYER HHT-IU防爆溫濕度變送器
選型表
型 號 描 述
HHT-EU Explosion-proof humidity transmitter.
HHT-EU-LCD Explosion-proof humidity transmitter withLCDdisplay.
HHT-IU Intrinsically safe humidity transmitter.
HHT-IT Intrinsically safe humidity/temperature transmitter.
HHT-IT-LCD Intrinsically safe humidity/temperature transmitterwithLCD display.
DWYER HHT-IU防爆溫濕度變送器
