Máy Đo Nhiệt Độ Điểm Sương Michell (Dewpoint Meter)

  • Mã sản phẩm: EA2-TX-100-SS |
  • Tình trạng: Còn hàng
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Máy Đo Nhiệt Độ Điểm Sương Michell (Dewpoint Meter)

Michell Instruments Easidew 2-wire Dew-Point Transmitter – A rugged impedance dew-point transmitter for continuous measurement in compressed air or process gas

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Máy Đo Nhiệt Độ Điểm Sương Michell (Dewpoint Meter)

Michell Instruments Easidew 2-wire Dew-Point Transmitter

Design Simplicity and Economy The Easidew Transmitter is designed for ease of use, incorporating all the features needed to make installation and operation as simple as possible. For the fi rst time, dewpoint measurement is made as accessible as temperature and pressure with this fully confi gured, calibrated transmitter that can be instantly incorporated into your air or gas management control system. Easidew Transmitter is easy to install and operate. The costs of installation and operation are minimal due to the ruggedness, simplicity and reliability of the transmitter.

The key to the Easidew Transmitter’s performance is its sensor technology. Michell’s Advanced Ceramic Moisture Sensor is coupled with the latest microprocessor-based measurement circuitry to produce a fully calibrated and interchangeable transmitter. All calibration data is stored in flash memory and so exchange or service can be accomplished in seconds. The Easidew Transmitter is simply disconnected, removed from its sampling block and replaced by a new, fully calibrated unit.

• 2-wire loop powered connection
• Dew point or ppm moisture content
• NEMA 4, IP66
• Excellent sensor protection
• Measurement range -100 to +20°C (-148 to +68°F)
• Operating temperature -40 to +60°C (-40 to +140°F)
• Fast response

The Easidew Transmitters use Impedence technology, based on Michell’s ceramic sensor. The Ceramic Sensor is constructed using state of the art thin and thick fi lm techniques. Operation of the sensor depends upon the adsorption of water vapor onto a porous non-conducting “sandwich” between two conductive layers built on top of a base ceramic substrate. The active sensor layer is very thin – less than one micron (about 0.00004 inches) and the porous top conductor that allows transmission of water vapor into the sensor is even thinner. Therefore the sensor responds very rapidly to changes in applied moisture, both when being dried (on process start-up) and when called into action if there is moisture ingress into a process. Despite this extreme sensitivity to changes in moisture content, the Michell Ceramic Moisture Sensor is incredibly rugged due to the nature of its construction. To protect the sensor further against contaminants and pipe swarf it is housed in a protective sintered HDPE guard. All Michell Ceramic Moisture Sensors give <±2°C (±3.6°F) dew point accuracy and excellent long-term reliability and stability in process applications.

Thông Số Kỹ Thuật Máy Đo Nhiệt Độ Điểm Sương Michell

Model: EA2-TX-100-SS

Performance
Measurement Range (dewpoint) -100 to +20°Cdp (-148 to +68°Fdp)
0–3000 ppmv
ppmV output or non-standard dew-point range must be specified at time of order
Accuracy (dp) ±2°Cdp (±3.6°Fdp)
Response Time 5 mins to T95 (dry to wet)
Repeatability 0.5°Cdp (0.9°Fdp)
Electrical output/input
Output Signals 4–20mA or 0-20mA
maximum load resistance 500 Ω
RS232
Supply Voltage 85 to 264 V AC, 50/60Hz
Load Resistance Max 250 Ω @12 V / 500 Ω @ 24 V
Current Consumption 60 mA max
Operating conditions
Operating Humidity 0–100% RH
Operating Temperature Monitor: 0 to 50°C (+32 to +122°F)
Sensor:  -40 to +60°C (-40 to +140°F)
Operating Pressure 45 MPa (450 barg / 6500 psig) max
Mechanical specification
Ingress Protection Monitor: IP65 (NEMA 12) front panel only
Sensor:  IP66 (NEMA 4)
Dimensions Monitor: 1/8 DIN case, 96 x 48 x 100mm (3.77 x 1.88 x 4”) including clearance (W x H x D)
Sensor:  132 x 27mm (5.19 x 1.06”) (length x A/F)
Filter HDPE
Sensor weight 150g (5.3oz)
Electrical Connections Monitor: Screw terminals
Sensor:  4 pin socket provided
Alarm Front panel configuration of alarm points
Sensor Cable 0.8m (2.6 ft) standard
800m (2625 ft) max
Mains Cable 2m (6.5 ft) cable supplied

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