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). : ±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. : FM, CE.  选型表