background image

7

85198A_Manual of Electrical Installation for Pressure Probes KH-SIL2-Mobyle-series_07-2019_ENG

Failures and troubleshooting

In case of failures or malfunctions, on Table 2 you can find the most common failures and the means of appropriate 

search:

Table 2: troubleshooting

Failure

Possible causes 

Means of research

The sensor does not feel pressure

Obstruction of pressure 

channel

Fault on electronics output 

stage

1. Power down and remove the sensor

2. Verify eventual occlusion of the channel

     under pressure. Clean any residues and 

     material caps

The sensor is in alarm mode type  

“HIGH”

Bridge broken

Detachment of pins

Failure on primary element

1. Power down and remove the sensor

2. Check for overheating of electronics 

 housing. 

  Remove the causes of overheating, wait 

  until it cools down and power the sensor.

3. Powered the probe again, if the problem 

  persists, you should send back the probe to 

  Factory for repair. 

The sensor is in alarm mode type

“LOW” 

Power supply cable /connector

broken

Sensor not connected

Sensor not powered

Bridge broken

1. Power down and remove the sensor

2. Check that the power supply is connected.

  If necessary, restore the power supply.

3. Check for continuity between the pins of

  the connector and the power supply.

  If necessary, replace the cable and the    

 connector.

4. Check if the power values are within the

  specifications indicated in this manual. If

  necessary, replace the power supply.

5. If the problem persists, you should send

  back the probe to Factory for repair.

Applications to use the relevant category

The pressure sensors of KH Series may form part of a system for detecting the pressure that, when a threshold value is

exceeded, deactivates all the elements of pressure generation, through a control system.

The diagram “A” (Fig. 1) shows a possible application: the sensor detects the pressure and transduces it in an analog

electrical signal proportional to the value of the measured value; the SRP / CS compares the signal with the one set as

the alarm threshold: in case of exceeding the threshold it shall disable the elements of pressure generation.

VOLTAGE OUTPUT and  RATIOMETRIC

CURRENT OUTPUT

Fig. 1: application diagram A

Содержание KH-SIL2 Series

Страница 1: ...ns pag 2 2 Transmitters with amplified analog output pag 2 Standard installation pag 2 Electrical connections series KH pag 3 3 Protection for outdoor installations of analog sensors pag 4 4 Technical specifications pag 5 5 Safety content according to IEC EN 62061 paragraph 7 pag 6 This manual is related to KH Series pressure transducer SIL2 certified according to the standards IEC EN62061 GEFRAN ...

Страница 2: ...ers with amplified analog output Transducers KH SIL2 series Outputs 0 5 10 5V 0 5 5 5V 0 1 10 1V 0 1 10V 1 5V 1 6V 1 10V 0 2 10 2 0 5 4 5V ratiometric 4 20mA etc Installation remarks The transducer must be grounded normally through the machine body or equipment it is installed on Use a shielded cable only The cable shield must be grounded on PLC side and left floating on machine side on KH version...

Страница 3: ...nsor is connected in series with the current loop Interfaces with SRP CS and voltage devices RATIOMETRIC AND VOLTAGE AMPLIFIED OUTPUT CURRENT AMPLIFIED OUTPUT mod E Red Black Red Black White OUTPUT POWER SUPPLY SIGNAL POWER SUPPLY 2 1 3 4 G Deutsch DT04 4P Z M12 x 1 4 pin S AMP Superseal 1 5 E EN 175301 803 K Metri Pack 150 Protection IP67 Protection IP67 Protection IP67 Protection IP67 Protection...

Страница 4: ...ND PLC side Ground D4 D1 D2 D3 J2 J2 J2 Transducer side 24Vdc Transducer side OUT Transducer side GND B72210 S 250 K01 B72210 S 250 K01 B72210 S 250 K01 B72210 S 250 K01 PLC ground machine ground 1 1 1 1 1 1 1 Pressure Analog current output CAL signals if any do not require protection J1 J1 J1 PLC side 24Vdc PLC side IN PLC side Ground D1 D3 J2 J2 Transducer side 24Vdc Transducer side OUT B72210 S...

Страница 5: ...rature effects over compensated range zero 0 01 FS C typ 0 02 FS C max Temperature effects over compensated range span 0 01 FS C typ 0 02 FS C max Response time 10 90 FSO 1 msec Warm up time 3 30 sec Mounting position effects Negligible Humidity Fino a 100 RH non condensing Weight 80 120 gr nominal Mechanical shock 100g 11msec according to IEC 60068 2 27 Vibrations 20g max at 10 2000 Hz according ...

Страница 6: ...urpose to verify that there are no occlusion of the pressure channel which would lead to malfunctioning The inspection is visual after removing the probe from the process seat Frequency every year Testing the sensor calibration The test is intended to check the correctness of the transduction curve of the sensor It s done by applying known pressure points to the transducer and checking the output ...

Страница 7: ...ector broken Sensor not connected Sensor not powered Bridge broken 1 Power down and remove the sensor 2 Check that the power supply is connected If necessary restore the power supply 3 Check for continuity between the pins of the connector and the power supply If necessary replace the cable and the connector 4 Check if the power values are within the specifications indicated in this manual If nece...

Страница 8: ...8 85198A_Manual of Electrical Installation for Pressure Probes KH SIL2 Mobyle series_07 2019_ENG via Sebina 74 25050 PROVAGLIO D ISEO BS ITALIA tel 0309888 1 fax 0309839063 Internet http www gefran com ...

Отзывы: