gefran KX-SIL2 Series User manual

185196B_MAN_Installazione_Elettrica_Sonde_di_Pressione_Serie KX-SIL2_09-2020_ENG
Manual of Electrical Installation
for Pressure Probes KX-SIL2 Series
Code 85196B
Edition 09/2020
Contents
1. General precautions pag 2
2. Transmitters with analog output 4-20 mA pag 2
Standard installation pag 2
Electrical connections pag 3
Interfaces with SRP/CS and current devices pag 3
3. Technical specifications pag 4
4. Safety (content according to IEC/EN 62061 paragraph 7) pag 5
This manual is related to KX Series pressure transmitter, SIL2 certified according to the
standard IEC/EN62061 with Report No. FS 28713306 from TÜV Rheinland.
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285196B_MAN_Installazione_Elettrica_Sonde_di_Pressione_Serie KX-SIL2_09-2020_ENG
1. General Precautions
The system must be used only in accordance with the required protection level.
The sensor must be protected against accidental knocks and used in accordance with the instrument’s ambient characteristics and per-
formance levels.
The sensors must be installed in accordance with the electrical characteristics and the safety and installation instructions as specified in
the document 80534 “SAFETY NOTE KX” and in this document.
2. Transmitters with analog output 4-20mA
Transmitters: Series KX SIL2
Output: 4...20mA
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 in safe area and left floating on machine side.
- To prevent interference, separate the power cables from the signal cables.
Machine
Press
Equipment
Transmitter
Transmitter
Ground
Cable shield floating
PLC / Instrument
Pressure port
Cable connector
Cable shield to ground
Shielded cable
Standard installation (recommended)
Hazardous Area (Classified) Safe Area

385196B_MAN_Installazione_Elettrica_Sonde_di_Pressione_Serie KX-SIL2_09-2020_ENG
Electrical connections
AMPLIFIED CURRENT OUTPUT - mod. E
The interface with SRP/CS (Safety Related Part of a Control System) is made by mean of multipolar connectors showed
on pictures below, where the connections are specified for amplified current output with 2 wire system.
The sensor is connected in series with the current loop.
LOAD DIAGRAM
(current output)
Interfaces with SRP/CS and current devices
CONTROLLER
AMPL/CONV SIGNAL
POWER SUPPLY
cod. V cod. P cod. F cod. E/M cod. Z
Red
Yellow or
Black
1
2
1
2
3
4
A
B
21
34
P - 7 pole connector V - 6 pole connector F - 2 pole cable
Male connector 7 pole M16x0.75
Protection rating IP67
Male connector, 6 pole bayonet
Protection rating IP66
Shielded cable 2x0.25 - 1m.
Protection rating IP65
Shield
Red
Yellow or
Black
4 pole male connector
Protection rating IP67
Z - Connector 4 pin M12 x 1
E– 4 pin DIN type A
Protection rating IP65
M– 4 pin microDIN type C
Protection rating IP65
E/M – Connector EN 175301-803
Ω
Operating
Area
POWER SUPPLY VOLTAGE
RL = < (Vsupply - 10V) / 0.02A
TOTAL LOAD RESISTANCE RL

485196B_MAN_Installazione_Elettrica_Sonde_di_Pressione_Serie KX-SIL2_09-2020_ENG
3. Technical Specifications
Output signal Current 4-20 mA (2 wire system)
Accuracy (1) ± 0.15% FS typical; ± 0.2% FS max
Non Linearity <± 0.1% FS BFSL
Hysteresis <± 0.1% FS
Repeatability <± 0.05% FS
Pressure ranges from ±1 bar to 1000 bar (see table)
Resolution Infinite
Overpressure (without degrading performance) See table
Pressure containment (Burst test) See table
Pressure media Fluid compatible with 17-4PH and AISI 430F Stainless Steel
Housing Stainless Steel INOX AISI 304
Power supply 10...30Vdc
Dielectric strength In conformity to 500 Vac @ 60 sec. test
Zero output signal 4mA (nominal)
Full scale output signal 20mA (nominal)
Max allowed load See load diagram
Long term stability < 0.1% FS/year
Operating temperature range (process) -40...+125°C (-40...+257°F) limited to temp. T4/T5/T6 (see table below)
Operating temperature range (ambient) -40...+105°C (-40...+221°F) limited to temp. T4/T5/T6 (see table below)
Compensated temperature range -20...+85°C (-4...+185°F)
Storage temperature range -40...+125°C (-40...+257°F)
Temperature effects over compensated range (zero) ± 0.01% FS/°C
Temperature effects over compensated range (span) ± 0.01% FS/°C
Response time (10...90%FSO) < 1 msec.
Zero offset tolerance ± 0.15% FS typ; ± 0.25% FS max
Span offset tolerance ± 0.15% FS typ; ± 0.25% FS max
Mounting position effects Negligible
Humidity Up to 100%RH non-condensing
Weight 110 gr. nominal
Mechanical shock 100 g / 11 msec. according to IEC 60068-2-27
Vibrations 20 g max at 10-2000Hz according to IEC60068-2-6
Ingress protection IP65/IP66/IP67
Output short circuit and reverse polarity protection YES
CE Conformity According to EC Directive 2004/108/CE
1 Includes combined effects of Non Linearity BFSL (Best Fit Straight Line), Hysteresis and Repeatability (acc. to IEC 61298-2)
PRESSURE RANGES
RANGES (Bar) 2 2.5 4 6 10 16 20 25 40 60 100 160 200 250 400 600 1000
Overpressure (Bar) 4 5 8 12 20 32 40 50 80 120 200 320 400 500 800 1200 1200
Burst pressure (Bar) 8 10 16 24 40 64 80 100 160 240 400 640 800 1000 1500 1500 1500
COMPOUND RANGES (Bar) -1..+1 -1..+1.6 -1..+2 -1..+2.5 -1..+4 -1..+6 -1..+10
Overpressure (Bar) 4 5 6 7 10 14 22
Burst pressure (Bar) 8 10 12 14 20 28 44
INTRINSIC SAFETY CHARACTERISTCS
II 1G Ex ia IIC T6 Ga
II 1D Ex ia IIIC T200 90°C Da
II 1G Ex ia IIC T5
II 1D Ex ia IIIC T200 100°C Da
II 1G Ex ia IIC T4
II 1D Ex ia IIIC T200 110°C Da
Maximum voltage Ui 30Vdc 30Vdc 30Vdc
Maximum current Ii 100mA 100mA 100mA
Maximum power Pi 0.75W 0.75W 0.75W
Maximum inductance (*) Li 0.25 mH 0.25 mH 0.25 mH
Maximum capacity (*) Ci 15nF 15nF 15nF
Fluid temperature -40...+60°C -40...+70°C -40...+80°C
Ambient temperature -40...+60°C -40...+70°C -40...+80°C
T Class (Group II) T6 T5 T4
Max Surface T (Group III) (**) T200 90°C T200 100°C T200 110°C
(*) Includes inductance and capacity values of a cable:(L typical 1 μH/m and C typical 100 pF/m) with maximum length 15 mt
(**) includes 200mm dust layer

585196B_MAN_Installazione_Elettrica_Sonde_di_Pressione_Serie KX-SIL2_09-2020_ENG
4. Safety (content according to IEC/EN 62061 paragraph 7)
Restrictions on use
The device in order to remain compliant with the designated category should be used only as indicated in these instruc-
tions and as required in the operating manual concerning mechanical installation, electrical connection, environmental
conditions and usage limits.
Maintenance and periodic inspections
Periodic maintenance to carry-out in order to guarantee the justified exclusion of failures are:
- Visual inspection of the status of the electrical and mechanical connections.
The maintenance is designed to evaluate possible problems due to situations of incorrect mounting endured over tim
or particular aggressiveness of the material processed.
Frequency: every two years
Check obstruction of the channel under pressure
- The maintenance has the purpose 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 values of the probe.
Frequency: every four years.
Indication of response time
The response time to the pressure transduction is equal to 1 ms
Indications and alarms
The KX Series pressure transmitters in the case of some specific anomalies provide output saturation (positive HIGH or
negative LOW).
The table 1 indicates the detected failures, their effect on the electrical output, and the recovery mode of the device.
Table 1: failures, effects on the outputs
Failure Analog Current Output
Power supply cable broken LOW < 3.6mA
Sensor not connected LOW < 3.6mA
Power supply broken LOW < 3.6mA
Broken bridge *LOW < 3.6mA
*HIGH > 24mA
(*) variable according to the type of failure
Applications to use the relevant category
The pressure sensors of KX 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.
Fig. 1: application diagram A

685196B_MAN_Installazione_Elettrica_Sonde_di_Pressione_Serie KX-SIL2_09-2020_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
specications 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.
IMPORTANT NOTE
KX series pressure transmitters are designed and manufactured in compliance with:
• ATEX Directive 2014/34/EU According to EN 60079-0:2018, EN 60079-11:2012
(see EU Conformity declaration for updated conformity)
• EAC TR CU 012/2011 regulation
Type of Protection:
• ATEX: group II, category 1G, 1D
• EAC Ex: group/category 0
GAS type of protection: Ex ia IIC T6, T5, T4 Ga (Ambient Temp.: -40°C...+60°C / +70°C / +80°C)
DUST type of protection: Ex ia IIIC T200 90°C, T200 100°C, T200 110°C Da (Ambient Temp.: -40°C...+60°C / +70°C / +80°C)
Operate only with associated certified equipments [Ex ia] IIC, EMC compliant power supply with the following specifications:
• Supply Voltage max. Uo = 30 V
• DC Current Output max. Io = 100 mA
• Power max. Po = 0.750 W
The specified values of Lo and Co for the power supply need to be greater than Ci + Ccable and Li + Lcable.
• Internal Inductance Li = 250 uH
• Internal Capacitance Ci = 15 nF
Installation and maintenance must be held in accordance with International installation and maintenance guidelines for
explosive gas atmospheres, such as:
• IEC/EN 60079-14
• IEC/EN 60079-17
• Other national guidelines/standard
GEFRAN spa
via Sebina, 74
25050 PROVAGLIO D’ISEO (BS) - ITALIA
tel. [phone] - fax. [phone]
Internet: http://www.gefran.com