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Dwyer德威爾 HHT-IU HHT-EU-LCD HHT-IT-LCD 防爆溫濕度變送器

HHT系列 防爆型溫濕度變送器用于在惡劣的工業場合來精確測量。可根據需要提供隔爆型和本安防爆型。隔爆型只有濕度4-20mA輸出信號，本安型有溫度和濕度4-20mA輸出信號。它們都帶有雙排數顯來顯示溫度和濕度測量值。

HHT溫濕度變送器***適用于船舶及海洋工程中的暖通空調項目，除塵等應用場合。本安型儀表在使用時需要使用隔離柵。

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.

Dwyer德威爾 HHT-IU HHT-EU-LCD HHT-IT-LCD 防爆溫濕度變送器

Relative Humidity Range: 0 to 100% 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 seconds.

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.

Dwyer德威爾 HHT-IU HHT-EU-LCD HHT-IT-LCD 防爆溫濕度變送器

Dwyer德威爾 HHT-IU HHT-EU-LCD HHT-IT-LCD 防爆溫濕度變送器

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 seconds.

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.