SEFRAM SPX50 User manual
Notice Technique
FI 72.0066.1018E
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GENERAL DETAILS
The SPX 50 is a dust emissions controller which uses the principle of triboelectricity. It is fitted directly into the
duct or pipe to be monitored with the SPX 50 sensor being inserted into the particle-filled air flow.
The SPX 50 is available in three versions:
- alarm version with transfer to relay inverter contact,
- 4-20 mA transmitter version,
- network version connected to a central PC.
The SPX 50 is adjusted with the SPX 50 pocket unit or a PC with dedicated software.
The SPX 50 is itself of "blind" type and only an alarm status is displayed on the front panel. Using the pocket
unit or the PC, it gives a dust emissions trend as a % or as a quantity (mg/m3or other). In this case, the
device must be calibrated in relation to a reference measurement.
Connected to a PC, the software is used to:
- continuously record instantaneous or average values,
- create graphs, reports, etc,
- store data in a computer file,
- interact with the SPX 50.
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MECHANICAL ASSEMBLY
The sensor is fitted directly to the duct to be monitored under the following conditions:
- 1" / 26-34 mm thread (BSP or pipe thread),
- positioned in a straight portion in line with the following diagram,
- on a metal duct connected to earth, the continuity of the earth between the sensor and the duct section must
be ensured,
- sensor length (100 - 500 mm) to be suited to the duct (e.g. length of 200 mm for a Ø 250 - 450 duct).
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MECHANICAL DIMENSIONS
NEWCAP-MS
M16 N°6
Mini 4,5mm
Maxi 10mm
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ELECTRICAL CONNECTIONS
The connection terminals can be accessed after removing the cover. The connections are made using a cable
with at least 4 conductors. Maximum conductor cross section: 0.5 mm². Recommended cable: HI FLEX-CY
4x0.5².
It is recommended that a voltage 24 V AC is used for the alarm contacts. For higher voltages, it is
recommended that an interface is used. The current is limited by the cross section of the conductors used.
Relay alarm version:
When supplying several SPX 50 units with a common 24 V AC power supply, it is essential to connect all of
the + together and all of the - together.
The contacts of the alarm relay are shown with the SPX 50 not switched on; when the power is switched on,
the relay rises if there is no alarm.
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4-20 mA transmitter version:
The 4-20 mA is of active integrated 24 V DC voltage type.
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Network version:
- 32 SPX 50 sensors can be networked.
- Connections are made using the SPX 50 RS-BR interface unit.
- In the network version, the "alarm" output to relay function is maintained. The interface unit
incorporates the interface relays for using contacts up to 2.5 A 250V AC1.
- Dialogue connections are of RS485 type using the secure SEFRAM protocol.
The network:
The SPX 50-NET VXX software supplied with the assembly includes all functions:
- for configuring and adjusting the sensors
- for displaying graphs
- for continuous recording
- for printing graphs and reports
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Sensor connection:
Sensor encoding:
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The SPX 50 RS-BR interface unit:
The SPX 50 RS-BR interface unit is used to connect the sensors
of the
network to the PC. It includes the SPX 50 alarm relay interfaces.
Main specifications:
- Main supply: 230V 50 Hz
- Power consumption: 40 VA
- Fuse protection
F1 F2 general 500 mA protection (250V)
F3 1A sensor supply protection (24V)
N.B.: the sensor connections are the same for each sensor.
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Notice Technique
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Dialogue connection with the interface unit:
- Connect all terminals "A" together and all terminals "B" together.
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THE UNIT
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SPECIFICATIONS
Power supply 24V AC or DC
Power consumption < 100 mA
Alarm relay 1A 24V AC/DC inverter contact
4-20 mA active, max load 500 Ω
Network RS 485 type. Max length < 1.2 km (depending on cable)
Parameter settings using pocket unit or PC
Display 1 LED on front panel → power on and alarm status for the alarm version
Unit protection with self-resetting fuse
Operating temperature
- Part outside the duct
SPX 50 body 0° - 65°
- In the air flow at the sensor < 85° - standard SPX 50
≤ 250° with SPX 50 fitted with thermal separator
> 250° - please contact us
Storage temperature -20° - +80°
Alarm version
- Alarm adjustment setting 0 - 100 % with pocket unit or PC
0 - scale max (µg/m3, mg/m3, g/m3) with PC
- measurement average adjustable from 1 - 60 min in steps of 1, 2, 5, 10, etc.
Repeatability / stability < 5 % (on test loop)
Materials Stainless steel 316L or 304 (316 TI for the sensor on request)
PTFE for the insulator
Specifications of gaseous flow please contact us
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ADJUSTMENTS
Regardless of the version, the SPX 50 is adjusted in the same way using the pocket unit or a PC.
3 automatic functions are available to the operator:
1) Auto sensitivity:
During installation, the unit must be calibrated in relation to the environment into which it is installed
(installation type, dust, concentration, etc.).
To do this:
- Place the SPX 50 in the normal operating conditions of the installation (emissions with no problems),
- Set an average value encompassing all of the various representative operations of the installation (clogging,
arrival of material, etc),
- Start the auto-sensitivity test on the pocket unit or the PC.
The unit adjusts its sensitivity automatically and considers that the emissions caused during this adjustment
phase represent 10% on a scale of 0-100 %.
2) Auto-zero:
This function is used to re-calibrate the zero point of the SPX 50 with time (deviation essentially caused by the
temperature operating conditions and "ageing" of the electronics).
To perform an auto-zero, start the auto-zero test.
At the end of the test, the SPX 50 automatically returns to normal operation. The test lasts for approx. 75
seconds.
This operation should be performed on a regular basis once a year.
3) Calibration:
Function accessible through the PC only.
This function is used to associate an emissions trend in µg/m3or mg/m3or g/m3to a 0 - 100% scale or to
recalibrate the unit with time.
There are 3 calibration options:
- Associate a reference or estimated value to an average value given by the SPX 50.
- Associate a reference or estimated value to a known average value.
- Associate a reference or estimated value to an average value given by a saved file.
The optimum solution is to:
- Have a weighted measurement taken by an approved organisation.
- In parallel, during the weighted measurement, create a computer file of the values given by the SPX 50.
- Enter the reference value to the test results, using the calibration function and a computer file.
An instruction manual for the pocket unit and an instruction manual for the PC software giving the procedures
to follow are attached to these instructions.
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OPERATION
Alarm version:
The SPX 50 calculates an average value as a function of the duration set by the user.
If the average value exceeds the alarm reference limit, the alarm relay "falls" and the LED on the front of the
unit flashes.
When the average value falls back below the alarm reference value, the relay "rises" and the LED on the front
of the unit remains permanently illuminated.
The alarm can be acknowledged using the pocket unit or the PC and in this case, the average value is
"loaded" with the current value.
4-20 mA transmitter version:
The SPX 50 leaves our factory set to 4 mA for 0% and 20 mA for 100%. This represents the average value.
If a value in µg/m3, mg/m3or g/m3is associated to the 4-20 mA scale, the scale maximum is given by the PC
software in the main parameter menu.
Network version:
In the network version, the central PC with the dedicated software interrogates each SPX 50 in turn. Each
SPX 50 has a unique address defined by positioning jumpers.
The software is used to:
- adjust the various settings sensor by sensor,
- view all of the networked SPX 50 units at the same time,
- continuously record computer files for each sensor,
- create graphs, reports, etc.
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General instructions for safety, assembly, commissioning, usage and maintenance
to be read before working on the device
GENERAL
These instructions must be read jointly with:
+the standard NFC15-100
+the technical data sheet specific to the device
The Sefram devices are designed to be assembled,
commissioned and used in compliance with the
characteristics/data given in the technical data sheet.
Always adhere to all of directives, legislation, orders and
most recent standards in force for the stated field of
application.
The assembly, commissioning, usage and maintenance
operations must always be carried out by qualified and
authorised personnel.
Personnel working on the devices must be familiar with the
safety rules and requirements in force regarding the
components, devices, machines and electrical installations.
RECEPTION - STORAGE
After unpacking the device, check that this latter has not
been damaged during transport; for certain devices,
remove the protective film from the cover. The material
must be stored inside in a dry place.
In the event of a problem, please contact Sefram.
ASSEMBLY
The assembly operations must be carried out by qualified,
skilled and authorised personnel. Personnel working on
these devices must be familiar with the safety rules and
requirements in force.
The box must be mounted vertically.
For material connected permanently to the network, a
quickly accessible cut-off device must be incorporated into
the cabling installation of the building.
The device supply must be equipped with a device for
protection against risks of over-current and fault isolation.
The number of poles protected must be appropriate to the
neutral regime of the building and to the regulations in
force.
The equipment must be connected to the PE protection
mass by green/yellow wires (NFC15-100).
The device is compatible with the neutral regimes TT, TN or
IT;
Nevertheless, we recommend that the device is supplied
through the intermediary of an insulation transformer for
which the primary is supplied between phases and not
between phase and neutral, so as to avoid any accidental
over-voltage caused when the neutral is cut before the
phases.
In the event of a problem, please contact Sefram.
COMMISSIONING AND USAGE
Commissioning is authorised only after duly establishing
that the device, the machine or the installation in which the
device has been integrated in a compliant manner,
satisfies all of the directives, legislation, orders and most
recent standards in force.
Commissioning operations must be carried out by
qualified, skilled and authorised personnel. Personnel
working on these devices must be familiar with the safety
rules and requirements in force.
Note: correct operational functioning does not in itself
constitute an indication of conformity to the
recommendations for the use of the material in complete
safety.
Also read the maintenance recommendations which
equally apply during commissioning and use.
In the event of a problem, please contact Sefram.
MAINTENANCE
The device does not require any special maintenance.
The following operations are recommended; they
constitute a minimum:
- Before any work intervention, we recommend that
the dust is removed before opening the cover,
- The device must not be opened in an excessively
dusty environment
- If the unit is calibrated in µg/m3, mg/m3or g/m3,
an annual re-calibration using a reference mass
measurement should be carried out to ensure the
emissions trend is correct.
- The integrity of the joints must be checked:
remove any trace of dust or other deposit,
- Remove any trace of dust which could have
penetrated during the setting operation,
- Always ensure that the cover is correctly closed.
- For high concentrations of "sticky / caking"
products, periodically clean the sensor which is
immersed in the flow.
- In general, perform an auto-zero operation once a
year
- The replacement of the batteries must be made
out voltage. The monthly history is lost upon
removal batteries. Before replacement, please
record the memory if needed.
Maintenance operations must be carried out by qualified,
skilled and authorised personnel. Personnel working on
these devices must be familiar with the safety rules and
requirements in force.
In the event of a problem or any questions during these
operations please contact SEFRAM.
ATEX version : See FI 72.0242 instruction
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MAINTENANCE
The SPX 50 does not require any specific maintenance.
For high concentrations of "sticky / caking" products, periodically clean the sensor which is immersed in the
flow.
If the unit is calibrated in µg/m3or mg/m3or g/m3, an annual re-calibration using a reference weighted
measurement should be carried out to ensure the emissions trend is correct.
In general, perform an auto-zero operation once a year.
WARRANTY
The warranty does not apply in the following cases:
-Breakage through dropping or knocks to non-packaged products
-Damage caused by abnormal use of the device, connecting error, surges/overvoltages, etc.
-Any intervention on the device apart from the connections
For ATEX devices : no intervention
Any action on the devices is forbidden. You must send us back the device in our workshops, otherwise the
certification and the guarantee are lost.
In case of failure, no action is permitted and the unit must be returned to the following address:
______________________________
CERTIFICATE
The SPX50 respects the European directives ( CEM and ATEX ), which concerns it.
However, it must be used correctly in applications for which it is intended, and should be linked or near CE approved
products.
Certificate available on request.
WE RESERVE THE RIGHT TO CARRY OUT ANY MODIFICATIONS
TO OUR UNITS WHICH WE DEEM NECESSARY.
SEFRAM
PLACE GUTENBERG
59175 TEMPLEMARS
FRANCE
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