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Dew Point Sensors

–

Mini

User Manual v1.1

www.compressedairalliance.com

7

Mini Series

Power

Power Supply

10 to 30V / 30 mA + 4-20mA Current output

Electrical Connection

1 x 5 pin M8, female

EMC

According to IEC 61326-1

Other Information

Inbuilt Display

No

Measurement Chamber

1/2” Quick coupling (Nitto type) with Adjustable

Bleed Screw

Ambient Temperature

-30°C to +70°C

-22°F to +158°F

Dimensions

107 mm L x 28 mm W

4.2

” L x 1.

1

” W

Casing

Stainless Steel or Aluminium

IP Rating

IP65

Installation Type

Permanent or temporary installation

Calibration Frequency

Every 2 years

provided the sensor is not exposed to relative

humidity above 85%

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Содержание DEM

Страница 1: ...www compressedairalliance com 1 User Manual Dew Point Sensor Mini Series Model DEM ...

Страница 2: ...Contents Notices 3 Warnings 3 About Dew Point Sensors 5 Specifications Mini Series 6 Dew Point Sensor Pack 8 Installation Overview 9 Installation Mechanical 10 Installation Electrical 15 Commuication Settings 17 Warranty 18 Calibration 18 Trouble Shooting 19 Commissioning Report 20 ...

Страница 3: ...nstall or use the product you accept that you have read understood and complied with this manual Compressed Air Alliance endeavours to make the content of this manual correct but is not responsible for omissions or errors and the consequences caused In case of any doubts or questions regarding this manual or the product please contact Compressed Air Alliance Warnings Ignoring the warnings can lead...

Страница 4: ...cted from any power supply during maintenance work Any electrical work on the system is only allowed by authorised qualified personal Storage and transportation Make sure that the transportation temperature of the sensor is between 10 C to 60 C 14 F to 140 F Please make sure that the storage temperature of the sensor is between 10 C to 50 C 14 F to 122 F and the humidity is 90 no condensation Avoi...

Страница 5: ...component of your system and therefore should be monitored continuously Indicators on refrigerant dryers don t measure dew point The indicator on your refrigerant dryer is exactly that an indicator it is not measuring the dew point entering your plant It is only measuring the temperature of the refrigerant gas Any number of issues before and after your dryer can lead to the dew point deteriorating...

Страница 6: ...nsor is affected by on site conditions Contaminants such as oil high humidity or other impurities can affect the calibration and accuracy of the sensor Minimum gas flow 1 L min Measurement Ranges Dew Point Measurement 60 C to 60 C 76 F to 140 F Gas Relative Humidity 0 to 95 RH Pressure Measurement 0 to 40 bar Gas Temperature Measurement 40 C to 100 C 40 F to 212 F Outputs Output Analogue 4 to 20mA...

Страница 7: ... Other Information Inbuilt Display No Measurement Chamber 1 2 Quick coupling Nitto type with Adjustable Bleed Screw Ambient Temperature 30 C to 70 C 22 F to 158 F Dimensions 107 mm L x 28 mm W 4 2 L x 1 1 W Casing Stainless Steel or Aluminium IP Rating IP65 Installation Type Permanent or temporary installation Calibration Frequency Every 2 years provided the sensor is not exposed to relative humid...

Страница 8: ...sor Pack Each dew point sensor comes with Dew Point sensor in either Aluminium or Stainless Steel Casing Measurement Chamber o Standard option 1 2 Quick coupling Nitto type with Adjustable Silencer o Talk to you local dealer about other options Connector 5 meter cable with M8 connector ...

Страница 9: ...stall the sensor upside down horizontally at an angle or in wet gas Step 2 Install connection point in pipe eg a ball valve nozzle or nipple Step 3 Attach Dew Point Sensor to connection point Step 4 Set the gas bleed Step 5 Wire the sensor see Installation Electrical Step 6 Check the sensor settings Step 7 optional Connect the sensor to your SCADA or energy management system Step 8 Fill out the Co...

Страница 10: ...g parameters can lead to malfunctions and may damage the product or system Do not use this product in explosive areas Always use a spanner wrench to install the product Only use pressure rated materials and parts when installing and maintaining the product Do not disassemble the product Please observe local and national regulations before during installation and operation The product must be insta...

Страница 11: ...sensor If installing the sensor outdoor protection from sun and rain is necessary Correct Installation Incorrect Installation Do NOT install the sensor before a dryer or in gases with a re lative humidity above 80 Do NOT install the sensor upside down horizontally or at an angle as shown below Do NOT let condensate reach the tip of the sensor Dry Side Wet Side Dryer Compressor Filter Filter Dry Si...

Страница 12: ...f a ball valve is optional You do not need to use a valve to install the sensor However using a valve will make removing the sensor easier eg when you need to remove the sensor for calibration If installing a ball valve you can use a hot tap drill and clamp to create a connection point on pressurized or unpressurised pipes See the Compressed Air Alliance website for information on hot tap drills a...

Страница 13: ...rement chamber into the connection point and tighten with a spanner eg valve nipple or nozzle o Compressed Air Alliance recommends that our dew point sensors are installed via a measurement chamber o A reducing bush may be needed if connecting the measurement chamber to a large ball valve or nipple o Fix measurement chamber firmly to prevent loosing or shaking o Use thread tap or sealant where req...

Страница 14: ...ed screw to allow a small flow of gas to escape to the atmosphere Option 2 Zero Loss Chamber The zero loss chamber will prevent gas escaping to atmosphere and can improvie system efficiency Remove the bleed screw and fitting from measurement chamber Install a 1 4 to 6mm push fit into measurement chamber Connect a 6 mm tube between the measurement chamber and a second connection point downstream of...

Страница 15: ...rectly Consider all local and national safety requirements and regulations for electrical installations The system must be disconnected from any power supply during installation and maintenance work Any electrical work on the system is only allowed by authorised and qualified personal 4 20mA Scaling The sensor has an analog output range of 4 to 20 mA which is a 3 wire active analog output The anal...

Страница 16: ...ing force Otherwise it may damage the connection pins The data cable will be coloured coded as shown in the table below Its good practice to check the cable colours and make sure they match the chart below Connector Cable Colour Pin 1 RS845 Data A Brown Pin 2 RS845 Data B White Pin 3 4 20mA Output Blue Pin 4 12 30 vDC Black Pin 5 0 vDC Ground for Modbus Grey M8 Connector plug Sensor tip ...

Страница 17: ...efault Modbus RTU RS485 Settings Address Baud Rate Frame Parity Stop Bit Response Time Response Delay Frame Spacing 1 9600 8 N 1 1 Sec 0 Milliseconds 7 Characters Modbus Registers Holding Register Address Data Type Byte Length Description Unit Read Write 1 0 FLOAT 4 Temperature ºC or ºF Read 3 2 FLOAT 4 Relative Humidity RH Read 5 4 FLOAT 4 Pressure Dew Point ºCtd or ºFtd Read Optional integrated ...

Страница 18: ... caused by vibration damage during transportation excess heat or moisture The warranty is cancelled when one of the following situations occurs The user opens the measurement instrument without a direct request written in this manual Repairs or modifications are undertaken by third parties or unauthorised persons The serial number has been changed damaged or removed Other claims especially damage ...

Страница 19: ...o Installation Mechanical section for more information The sensor should be installed vertically Typical mechanical installation errors include Installing sensor upside down or at an angle Installing sensor in wet air Gas is not reaching the sensor tip 3 Make sure the sensor is wired correctly Refer to Installation Electrical section for more information 4 Check Modbus Settings Refer to Communicat...

Страница 20: ...ryer Type select one Refrigerant Desiccant Membrane Other Dew Point Sensor Reading Installation Step Task Yes NA No Comments Sign 1 Is the Dew Point Sensor installed correctly refer to Installation Mechanical 2 Is the Dew Point Sensor wired correctly refer to Installation Electrical 3 Dew Point sensor attached to pipe 4 Modbus and 4 20mA settings checked 5 Are the dryer and condensate drains worki...

Страница 21: ...Point Sensors Mini User Manual v1 1 www compressedairalliance com 21 Compressed Air Alliance Pty Ltd Phone Australia 1300 558 526 E mail sales compressedairalliance com Website www compressedairalliance com ...

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