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SMART Temperature Transmitter

PTT74-Ex Series User Manual

Sep.2020

www.faraboard .com

FAHM Co

Industrial Automation
Doc. PTT74-ExRev99/07M

Accessories / Spare parts

PTT74Ex-SPARE PARTS

Part No.

Name/Description

380121

Housing Assembly Remote Type

380122

Housing Assembly Explosion Proof

380123

Housing Assembly Standard Type

380131

Indicator Cover

380231

Terminal Board

830831

Electronic Board Assembly

380351

LCD Module

830531

Temperature Sensor

830331

Head Mounted Temperature Transmitter

830701

Spring Loaded Coupling Adaptor

830702

Spring Loaded Adaptor

380801

Stainless Steel Gland

380802

Plastic Gland

380803

Aluminum Gland

Содержание HART PTT74-E Series

Страница 1: ... Transmitter PTT74 Ex Series User Manual Sep 2020 1 www faraboard com FAHM Co Industrial Automation Doc PTT74 ExRev99 07M User Manual Smart Temperature Transmitter PTT74 Ex Series with HART Revision Selectable Protocol ...

Страница 2: ... Installation Process 5 2 2 1 Dimension 5 2 2 2 Mount the Transmitter 6 2 2 3 Housing rotation 6 2 3 Electrical considerations 7 2 3 1 Conduit installation 7 2 3 2 Wiring Instruction 7 2 3 3 Grounding 10 3 Configuration 11 3 1 LCD display 11 3 2 Device setup 11 3 2 1 Primary Variable 12 3 2 2 Custom Variable 15 3 2 3 LCD Parameters 16 3 2 4 Analog Output Parameters 17 3 2 5 Communication Parameter...

Страница 3: ... sensor technology for temperature measurements The major components of the PTT74 Ex are the sensor element and the electronics housing The sensor element contains the temperature sensor isolating body associated connections and thermo well The electronic board includes a temperature sensor as cold junction temperature measurement a memory module A D converter t measure sensor value D A converter ...

Страница 4: ...er and impulse cabling Mount the transmitter close to the process and use a minimum of cabling to achieve best accuracy Keep in mind the need for easy access personnel safety practical field calibration and a suitable transmitter environment Install the transmitter to minimize vibration shock and temperature fluctuation Procedures and instructions may require special precautions to ensure the safe...

Страница 5: ...he transmitter electronics temperature operating limits are 40 to 185 F 40 to 85 C Mount the transmitter so that it is not susceptible to vibration and mechanical shock and does not have external contact with corrosive materials 2 2 Installation Process 2 2 1 Dimension Standard PTT74 EX Dimensional Drawings shown in next figures Figure 4 PTT74 Ex Head Mounted Drawing without housing Figure 3 PTT74...

Страница 6: ...pe is also available as an accessory if yser want to use the device remotely 2 2 3 Housing rotation To improve field access to the wiring or the visibility of the optional LCD meter the transmitter housing may be rotated through 360 and fixed in any position see Figure 6 A stop prevents the housing from being turned too far In order to proceed with housing rotation the housing stop tang screw has ...

Страница 7: ...tage may burn out the reverse polarity protection diode in the test connection Perform the following steps to make wiring connections 1 Remove the housing cover on terminal compartment side Do not remove the cover in explosive atmospheres when the circuit is live Signal wiring supplies all power to the transmitter 2 Turn the display 90 degrees so that the void and screw are aligned then Loosen the...

Страница 8: ...on Doc PTT74 ExRev99 07M Transmitter operates on 14 30 Vdc 14 29 4 Vdc for satisfaction of EX The dc power supply should provide power with less than two percent ripple The recommended wiring for transmitter was shown in Figure 7 to 10 Figure 7 Removing Display Figure 9 Connecting wires Figure 8 Connecting wires 90 ...

Страница 9: ...Series User Manual Sep 2020 9 www faraboard com FAHM Co Industrial Automation Doc PTT74 ExRev99 07M Figure 10 PTT74 Ex Recommended wiring Figure 11 PTT74 Ex head mounted transmitter sensor wiring Figure 12 PTT74 Ex rail mounted sensor wiring ...

Страница 10: ...ply end For 4 20 mA HART output the signal wiring may be grounded at any one point on the signal loop or may be left ungrounded The negative terminal of the power supply is a recommended grounding point Always ground the transmitter case in accordance with national and local electrical codes The most effective transmitter case grounding method is a direct connection to earth ground with minimal im...

Страница 11: ...o fixed value via hart device or due to use of transmitter in multi drop mode The second line displays the actual measured value of temperature and its sign The third line displays the engineering unit for indicated variable A speed meter located in above section of the first line displayed the percentage of measured temperature The LCD display is shown in Figure 3 2 Device setup For configuration...

Страница 12: ... the most significant variable which in this device represents the actual value of temperature measurement Configuration of primary variable is performed via following parameters 3 2 1 1 Unit User can select the unit of primary variable using this parameter parameter display Parameter tuning structure Unit set the unit of temperature Press M until this page is appeared on LCD Then press Z to acces...

Страница 13: ...rs blink Then press M for the saving new parameter and switching from programing mode to operation mode Min Temperature The temperature mapped to 4 mA Press M until this page is appeared on LCD Then press Z to access the amount of minimum temperature programing mode You can change the amount of digits by S and change the point and position of digits by Z After tuning this parameter press the Z unt...

Страница 14: ...ping value with a linear curve parameter display Parameter tuning structure Damping for smoothing the noisy output based on sec Press M until this page is appeared on LCD Then press Z to access the amount of time based on second programing mode You can change the amount of digits by S and change the point and position of digits by Z After tuning this parameter press the Z until all characters blin...

Страница 15: ...n and max temperature values the custom variable value will be produced with linear or square root curve parameter display Parameter tuning structure Custom Variable Max Range The value mapped to 20 mA Press M until this page is appeared on LCD Then press Z to access the amount of maximum value programing mode You can change the amount of digits by S and change the point and position of digits by ...

Страница 16: ...ected variable of temperature transmitter the current value of output signal diagnostic signs like SQRT FIX Locked Over range and Under range signs and also implementation of configuration menu list User can select one or two variable to display on LCD in idle mode If user select more than one variable to show LCD will display selected variables alternately parameter display Parameter tuning struc...

Страница 17: ...ulate the output current to fix value and or trim the current Press M until this page is appeared on LCD Then press Z to access the test current value programing mode You can change the amount of digits by S and change the point and position of digits by Z After tuning this parameter press the Z until all characters blink Then press M for apply this value to as output current By pressing M display...

Страница 18: ...ion PTT74 Ex series transmitters has universal input terminals to measure the value which produced by sensor element So user should configure the transmitter to identify the type of sensor element and related parameters There are some menu in this device to configure the sensor element 3 2 7 1 Sensor Type Universal input port of device allow user to connect any temperature sensor element type to d...

Страница 19: ... apply a proportional factor to measured value Press M until this page is appeared on LCD Then press Z to access the Sensor Factor programing mode You can identify the sensor factor by pressing S After that press Z until all characters blink Then press M for the saving new parameter and switching from programing mode to operation mode The available sensor types are as follows L LO Linear Low Range...

Страница 20: ...y the type of input signal In other states the device will select the RUI type automatically The available Wire No are as follows 2 L Two Lead 3 L Three Lead 4 L Four Lead This variable is visible if RUI type was selected as resistance In this situation user should identify the number of resistor leads In other states the device will select the Wire No automatically as 2 Wire The available sensor ...

Страница 21: ...5 2 10 Input value Sensor output voltage or resistance 0 2 1 10 Input value Sensor output voltage or resistance 0 1 12 10 Input value Sensor output voltage or resistance 1 2 In some applications which user connect some sensor elements as series and connect them to the input terminals user should determine the number of sensors using Sensor Factor parameter Another application which the sensor fact...

Страница 22: ... mode You can change the amount of digits by S and change the point and position of digits by Z After tuning this parameter press the Z until all characters blink Then press M for the saving new parameter and switching from programing mode to operation mode The available Cold Junction modes are as follows NONE cold junction temperature compensation is not required EXT a fixed value will be used as...

Страница 23: ...ure the Sensor Check monitoring using bellow menu parameter display Parameter tuning structure Sensor Check sensor connectivity monitoring Press M until this page is appeared on LCD Then press Z to access the Sensor Check mode programing mode You can select the mode by pressing S After that press Z until all characters blink Then press M for the saving new parameter and switching from programing m...

Страница 24: ...SMART Temperature Transmitter PTT74 Ex Series User Manual Sep 2020 24 www faraboard com FAHM Co Industrial Automation Doc PTT74 ExRev99 07M Appendix A Assembly Drawing PTT74 EX H ...

Страница 25: ...21 Housing Assembly Remote Type 380122 Housing Assembly Explosion Proof 380123 Housing Assembly Standard Type 380131 Indicator Cover 380231 Terminal Board 830831 Electronic Board Assembly 380351 LCD Module 830531 Temperature Sensor 830331 Head Mounted Temperature Transmitter 830701 Spring Loaded Coupling Adaptor 830702 Spring Loaded Adaptor 380801 Stainless Steel Gland 380802 Plastic Gland 380803 ...

Страница 26: ...n Doc PTT74 ExRev99 07M Stainless Steel Gland Plastic Gland Aluminum Gland Housing Assembly Remote Type Terminal Board Electronic Board LCD Module Indicator Cover Temperature Sensor Spring Loaded Coupling Adaptor Spring Loaded Adaptor Explosion Proof Enclosure Universal Enclosure Head Mounted Temperature Transmitter ...

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