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Dwyer公司是一家美国仪器仪表制造公司,全程对差压、温度、压力、液位和流量的测量,变送和控制等方面拥有众多精密仪器仪表的制造公司。

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Dwyer 本安型温湿度变送器 HHT系列

产地:美国

HHT系列本安型温湿度变送器

产品介绍

The Series HHT Hazardous Area Humidity/Temperature Transmitter takes accurate measurements in the harshest of environments. The transmitter is offered in explosion-proof and intrinsically-safe versions depending on the application's requirements. 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. Both versions have an optional two line alphanumeric display to show the current humidity and temperature.

The Series HHT humidity/temperature transmitter is excellent for offshore HVAC applications, dust and grain applications. Intrinsically safe models require an intrinsically safe barrier.


技术参数

相对湿度范围: 0 to 100% RH.

温度范围: -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).

滞后: ±1%.

重复性: ±0.1% typical.

温度范围: -40 to 140°F (-40 to 60°C).

储存温度: -40 to 176°F (-40 to 80°C).

补偿温度: -40 to 140°F (-40 to 60°C).

电源: For instrinsically safe models HHT-IX, 9.5 to 28 VDC. For explosion-proof models HHT-EX, 16.5 to 28 VDC.

信号输出: 4-20 mA, 2 channels for humidity/temperature models (loop power on RH).

响应时间: 15 seconds.

电气连接: Screw terminal block.

管路连接: 1/2" female NPT.

漂移:<1% RH/year.

RH 传感器: Capacitance polymer.

温度传感器: Solid state band gap.

外壳材质: Aluminum.

显示: Optional 2 line alpha numeric, 8 characters/line. Temperature display is °F/°C selectable.

显示分辨率: RH: 0.1%: Temperature 0.1°F (0.1°C).

重量: 2 lb 8 oz (1134 g).

封装: 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.

认证: FM, CE. 


选型表

型  号

描    述

HHT-EU

Explosion-proof humidity transmitter.


HHT-EU-LCD

Explosion-proof humidity transmitter with LCD display.


HHT-IU

Intrinsically safe humidity transmitter.


HHT-IT

Intrinsically safe humidity/temperature transmitter.


HHT-IT-LCD

Intrinsically safe humidity/temperature transmitter with LCD display.