Bộ chuyển phát tín hiệu điểm sương 4-20mA 350barg -100°C..20°C - Alpha Moisture Systems - Dewpoint Transmitter AMT-SD(F)

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Bộ chuyển phát tín hiệu điểm sương  4-20mA  350barg -100°C..20°C - Alpha Moisture Systems - Loop powered Dewpoint transmitter AMT-SD(F)

Dewpoint Transmitter 4-20mA. Ranges available between -120°C to +20°C (-184°F to +68°F) dewpoint


Sensor                                       : Ultra High Capacitance Aluminium Oxide
Measuring Range                      : -100°C to 20°C dewpoint
Operating Temperature Range  : -20°C to 60°C
Output                                        : 4-20mA linear, loop powered.
Process Connection                  : ¾” UNF (male)
Pressure                                    : Maximum inlet pressure: 350 barg
IP Rating                                    : IP66 (with connector in place)
Accuracy                                    : ±2°C Dewpoint

Model AMT Dewpoint Transmitter is a two wire 4-20mA loop powered transmitter, used for continuous measurement of moisture in dry process gases or dry compressed air, which will output a linear 4-20mA signal corresponding to the dewpoint temperature. The Model AMT transmitter can also be factory configured to output a 4-20mA linear signal for any other moisture unit e.g. ppm(v), ppm(w), g/m3, lb/MMSCF etc.

Fast Response - Stable - Reliable - Accurate - Easy to Install.

The Ultra High Capacitance sensing element is long lasting and offers excellent sensitivity, repeatability and response speed.
Each unit is supplied with a Certificate of Calibration, traceable to International Humidity Standards, validating accuracy better than ±2°C dewpoint.

 

Features

- 2 Wire Loop Powered Dewpoint Transmitter
- Overall Range: -120°C to +20°C Dewpoint
- Accuracy better than ± 2°C Dewpoint
- INTEGRATED AUTOMATIC CALIBRATION
- Can be configured for linear 4-20mA signal in: °C & °F Dewpoint, ppm(v), ppb(v), g/m3, lb/MMSCF
- Temperature Compensation
- Failure Diagnostics
- Long Term Stability
- Fast Response Time
- IP66 / NEMA4X Protection

The transmitter also incorporates an Automatic Calibration (AUTOCAL) feature, which allows the user to carry out a field calibration / span check. The AUTOCAL feature is operated by two small button switches built within the transmitter enclosure. To avoid tamper, the switches are locked in normal use and can only be activated by following a specific routine from the manual.

The integral RISC microprocessor circuitry of the Model AMT transmitter allows high resolution with advanced self diagnostics for fault conditions. It also enables periodic re-calibration of the moisture sensor, storing calibration data within the fully self contained unit. Loop powered by a 7V to 28V dc source, the Model AMT transmitter will provide a linear 4-20mA signal over the chosen range.

The mechanics of the Model AMT transmitter have been designed to cope with extreme environmental conditions. The rugged stainless steel construction offers protection to IP66 (NEMA4X), with the transmitter electrical connections made via a secure industrial connector.

Model AMT transmitter can withstand 35,000 kPa (350bar) maximum pressure and by employing a low resistance cable, the transmitter can be located at significant distances, in excess of 1000 metres, from the control room.

Designed with the operator in mind for reliable and accurate measurements, the Model AMT transmitter is extremely easy to install and operate, requiring little or no maintenance.

The Model AMT transmitter is supplied with a Certificate of Calibration, an instruction manual and 2m connecting cable.

 

Specifications

MODEL AMT Dewpoint Transmitter
4-20mA Loop Powered Transmitter
TRANSMITTER TYPE: 2 Wire, 4-20mA Loop Powered Transmitter
OUTPUT SIGNAL: 4 to 20mA Linear
OPERATING VOLTAGE: 7V - 28V dc. Reverse polarity protected.
MAXIMUM SERIES RESISTANCE: = {40 x (Supply Voltage – 7)} ohms
SENSING ELEMENT: Ultra High Capacitance - Aluminium Oxide Type
RANGES: See How to Order Below
AUTOCAL: Field calibration / Span check facility. Activated and operated via two button switches on the Transmitter body. Locked in normal operating mode to avoid tamper.
FACTORY CALIBRATION: Supplied with Certificate of Calibration traceable to NPL / NIST
ACCURACY: Better than ±2°C dewpoint (NPL / NIST traceable for range -90°C to +20°C)
TEMPERATURE COEFFICIENT: Temperature compensated for operating range.
REPEATABILITY: Better than ±0.3°C dewpoint
OPERATING TEMPERATURE: -20°C to +60°C
STORAGE TEMPERATURE: -20°C to +70°C
OPERATING PRESSURE: From 1kPa (0.01 barA) to Maximum 35,000kPa ( 350 barA)
OPERATING HUMIDITY (External): Maximum - 95% RH
Non-condensing
SAMPLE FLOW RATE: Flow independent but ideally 2 to 5 litres per minute. Max: 25 litres/min.
CABLE TERMINATIONS: IP66 (NEMA4X) rated, size C, DIN EN 175301 connector at the Transmitter and other end terminated with bootlace ferrules.
CABLE: Supplied with 2m standard cable. Nominal diameter 3.4mm, 92ohms/km at 20°C
ELECTROMAGNETIC COMPATIBILITY (EMC): Complies to BS EN 61326-1
WARM UP TIME: 10 seconds
FAULT CONDITIONS: Open Circuit : Output drives to 20.50mA
Short Circuit : Output drives to 20.75mA
ISOLATION: Sensing Element connected to the 4-20mA loop but isolated from Transmitter body.
TRANSMITTER ENCLOSURE: 316 Stainless steel body with size C, DIN EN 175301 connector.
SENSOR PROTECTION: 316 Stainless steel mesh - 50 micron
PROBE MATERIAL (WETTED PARTS): 316 Stainless Steel
WEATHERPROOF CLASSIFICATION: IP66 / NEMA4X when Connector mated to Transmitter.
MECHANICAL CONNECTION: 3/4” UNF (16tpi) with integral Viton “O” ring seal.
MECHANICAL WARRANTY: 24 months in case of faulty workmanship and defective parts.
CALIBRATION WARRANTY: 12 months.
ACCESSORIES INCLUDED: Standard 2 meter connecting cable.

 

5 bước hướng dẫn lựa chọn sản phẩm How to order

How to Order - Step 1 of 5: Select a Range Below

 

How to Order - Step 2 of 5: Select a Longer Cable Below

 

How to Order - Step 3 of 5: Order a Display Below (optional)

 

How to Order - Step 4 of 5: Select a Transmitter Holder

Comes compete with mounting plate.
2 grades available: 303 or 316 Stainless Steel

 

How to Order - Step 5 of 5: Order an Isolator for the safe area

- Part No. PR5104BB2A - Single Channel
- Part No. PR5104BB2B - Dual Channel


 

Dimensions

Model AMT Dewpoint Transmitter

4-20mA Loop Powered Transmitter

 

Model ADSH-AMT Transmitter Holder

Flow Through Sample Cell

Note: The Assembly is shown with 1/4@ OD tube fittings. The dimensions across the tube fittings will vary for all other size fittings.

 

Model DS1200 Display

Stable, Accurate and Reliable Alarmed Monitor



Corrosive Gases: The Sensor should not be exposed to corrosive gases (or corrosive contaminants in the gas sample) as these can
chemically attack the sensor, impairing calibration accuracy and/or damaging it beyond economic repair. Examples of such gases are
mercury (Hg), ammonia (NH3), chlorine (Cl2) etc. Strong oxidising agents such as ozone (O3) should also be prevented from coming
into contact with the sensor.
 

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