AFRISO MAG 80 Dif User manual

Read instructions before using device!
Observe all safety information!
Keep instructions for future use!
05.2016 0
854.001.0443
Operating instructions
Magnetic piston type pressure gauges
for differential pressure –high over-
load protection
Type: MAG 80/100 Dif
# 88002312 - # 88041312
Magnetic diaphragm pressure gauges
for very low differential pressure
Type: MAG 115 Dif
# 88002311 - # 88021311

2MAG 80/100 Dif, MAG 115 Dif
Table of contents
1This instruction manual............................................................................................3
1.1 Precautions ..................................................................................................3
1.2 Explanation of symbols and typeface ..........................................................3
2Safety.......................................................................................................................4
2.1 Intended use.................................................................................................4
2.2 Predictable incorrect application..................................................................4
2.3 Safe handling ...............................................................................................4
2.4 Staff qualification..........................................................................................4
2.5 Modifications to the product.........................................................................4
2.6 Usage of spare parts and accessories.........................................................5
2.7 Liability information ......................................................................................5
3Product description..................................................................................................6
3.1 Scope of delivery..........................................................................................6
3.2 Function principle.........................................................................................6
4Technical specifications...........................................................................................8
4.1 MAG 80/100 Dif............................................................................................8
4.2 MAG 115 Dif...............................................................................................11
4.3 Electrical contacts ......................................................................................14
4.4 Reed contact (SPDT).................................................................................15
5Transport and storage ...........................................................................................15
6Mounting and commissioning................................................................................16
6.1 Prior to mounting........................................................................................16
6.2 Mounting MAG ...........................................................................................16
6.3 Panel mounting (MAG 115 Dif)..................................................................17
6.4 Wall mounting or pipe mounting (option) ...................................................18
7Operation...............................................................................................................19
7.1 Zero correction (MAG 115 Dif)...................................................................19
7.2 Contact settings (MAG with electrical contact) ..........................................20
8Troubleshooting.....................................................................................................21
9Decommissioning, disposal...................................................................................22
10 Returning the device..............................................................................................22
11 Warranty................................................................................................................22
12 Copyright ...............................................................................................................23
13 Customer satisfaction............................................................................................23
14 Addresses..............................................................................................................23

This instruction manual
MAG 80/100 Dif, MAG 115 Dif 3
1 This instruction manual
This instruction manual is part of the product.
Read this manual before using the product.
Keep this manual during the entire service life of the product
and always have it readily available for reference.
Always hand this manual over to future owners or users of the
product.
1.1 Precautions
WARNING TERM
Type and source of the danger are shown here.
Precautions to take in order to avoid the danger are shown
here.
There are three different levels of warnings:
Warning term
Meaning
DANGER
Immediately imminent danger!
Failure to observe the information will result in
death or severe injuries.
WARNING
Possibly imminent danger!
Failure to observe the information may result in
death or severe injuries.
CAUTION
Dangerous situation!
Failure to observe the information may result in
minor or severe injuries as well as damage to
property.
1.2 Explanation of symbols and typeface
Symbol
Meaning

Prerequisite for an activity

Activity consisting of a single step
1.
Activity consisting of a several steps

Result of an activity

Bulleted list
Text
Indication on display
Highlighting
Highlighting

Safety
4MAG 80/100 Dif, MAG 115 Dif
2 Safety
2.1 Intended use
The magnetic piston type pressure gauges MAG 80 Dif and
MAG 100 Dif may only be used for differential pressure measure-
ment of gaseous and liquid, non-adhesive media.
The Magnet-magnetic diaphragm pressure gauge MAG 115 Dif
may only be used for differential pressure measurement of air or
compatible gases.
Use MAG only within the specified pressure application range
(see table 1, page 9).
Any use other than the application explicitly permitted in this instruc-
tion manual is not permitted.
2.2 Predictable incorrect application
MAG must never be used in the following cases:
Hazardous areas/potentially explosive atmospheres
Application in an environment subject to a magnetic field.
2.3 Safe handling
MAG represents state-of-the-art technology and is made according
to the pertinent safety regulations. Each product is subjected to a
function and safety test prior to shipping.
Operate MAG only when it is in perfect condition. Always ob-
serve the operating instructions, all pertinent local and national
directives and guidelines as well as the applicable safety regula-
tions and directives concerning the prevention of accidents.
Extreme environmental conditions have negative effects on the func-
tion of the product.
Protect MAG against heavy vibration.
2.4 Staff qualification
The product may only be mounted, commissioned, operated, main-
tained, shut down and disposed of by qualified, specially trained
staff.
Electrical work may only be performed by trained electricians and in
compliance with all applicable local and national directives.
2.5 Modifications to the product
Changes or modifications made to the product by unauthorised per-
sons may lead to malfunctions and are prohibited for safety reasons.

Safety
MAG 80/100 Dif, MAG 115 Dif 5
2.6 Usage of spare parts and accessories
Usage of unsuitable spare parts and accessories may cause dam-
age to the product.
Use only genuine spare parts and accessories of the manufac-
turer.
2.7 Liability information
The manufacturer shall not be liable in any form whatsoever for
direct or consequential damage resulting from failure to observe the
technical instructions, guidelines and recommendations.
The manufacturer or the sales company shall not be liable for costs
or damages incurred by the user or by third parties in the usage or
application of this product, in particular in case of improper use of the
product, misuse or malfunction of the connection, malfunction of the
product or of connected devices. The manufacturer or the sales
company shall not be liable for damage whatsoever resulting from
any use other than the use explicitly permitted in this instruction
manual.
The manufacturer shall not be liable for misprints.

Product description
6MAG 80/100 Dif, MAG 115 Dif
3 Product description
3.1 Scope of delivery
MAG 115 Dif
MAG with electrical contact
Cable glands
Option wall mounting
Mounting plate with fixing clamp
3.2 Function principle
Fig. 1: Function principle MAG 80/100 Dif
1
Three fixing clamps for panel mounting
2
Two 1/8 NPT (A) blind plug for closing un-
used connections
3
Three screws M3 x 4
4
Three tapping screws type AB 4 x 19
5
Two 1/8 NPT (A) adapters for hose connec-
tion and lower or rear connections

Product description
MAG 80/100 Dif, MAG 115 Dif 7
Fig. 2: Function principle MAG 115 Dif
High and low pressure are separated by a sensor unit consisting of a
magnetic piston, a Buna seal (MAG 80/100 Dif) of a diaphragm
(MAG 115 Dif) and a measuring spring. The pressure difference
causes a movement of the sensor unit against the measuring spring
proportional to the pressure change.
A ring magnet which is contained in a separate chamber of the hous-
ing and which is isolated from the pressures is rotated by the mag-
netic coupling in accordance with the linear movement of the sensor
unit. A pointer mounted to the ring magnet indicates the differential
pressure on the dial.
MAG with electrical contacts: Reed contacts are located next to
the pressure chamber; they are activated by the magnetic field of the
sensor unit.

Technical specifications
8MAG 80/100 Dif, MAG 115 Dif
4 Technical specifications
4.1 MAG 80/100 Dif
Fig. 3: Connection on left and right sides
Fig. 4: Connection on right and left side; with electrical contact
Fig. 5: Connection on right and left sides; 3-hole fixing, panel mount-
ing bezel

Technical specifications
MAG 80/100 Dif, MAG 115 Dif 9
Fig. 6: Mounting plate and fixing clamp
Table 1: Technical specifications MAG 80/100 Dif
Parameters
Value
General specifications
Housing Ø
MAG 80 Dif
MAG 100 Dif
80 mm
100 mm
Panel cut out:
MAG 80 Dif
MAG 100 Dif
Ø 84 mm
Ø 105 mm
Connection
2 x G¼ female thread, width across flats
SW 17
Range (EN 837-3/5)
0/0.25 bar to 0/10 bar
Dial
Dial marking black/red (bar/psi), scale
angle 90°
Static pressure
Standard: Max. 100 bar
Option: Max. 250/400 bar
Overpressure safety
Up to the maximum static pressure at
both sides
Accuracy
±3 % of full scale value at increasing
differential pressure

Technical specifications
10 MAG 80/100 Dif, MAG 115 Dif
Parameters
Value
Degree of protection
IP 65 as per EN 60529
Operating temperature range
Ambient
0 °C to 80 °C
Medium
Max. 100 °C
Material (parts not wetted)
Housing
Stainless steel 1.4301
with rubber sealing ring at the front
Connection cover
Plastic, glass-fibre reinforced, black
Dial
Aluminium, white
Pointer
Aluminium, black
Window
Instrument glass
Material (wetted parts)
Connection
Stainless steel 1.4401
Measuring element
(compression spring)
Stainless steel 1.4310
Magnetic piston
Stainless steel 1.4401/strontium ferrite
Seal
NBR

Technical specifications
MAG 80/100 Dif, MAG 115 Dif 11
4.2 MAG 115 Dif
Fig. 7: Connection on right and left sides or on rear
Fig. 8: Connection on right and left sides or on rear; with electrical
contact

Technical specifications
12 MAG 80/100 Dif, MAG 115 Dif
Fig. 9: Mounting plate and fixing clamp

Technical specifications
MAG 80/100 Dif, MAG 115 Dif 13
Table 2: Technical specifications MAG 115 Dif
Parameters
Value
General specifications
Housing Ø
115 mm
Panel cut out
Ø 115 mm
Connection
2 x 1/8 NPT female thread or 2 x hose
connection 5 mm (as required by using
the enclosed adapters)
Range (EN 837-3/5)
0/0.25 mbar to 0/100 mbar
Dial
Dial marking black, scale angle 90° (first
graduation after zero at 15 % of full scale
value)
Static pressure
Max. 2.4 bar
Overpressure safety
Up to the maximum static pressure at
both sides
Accuracy
±3 % of full scale value at increasing
differential pressure
Degree of protection
IP 65 as per EN 60529
Operating temperature range
Ambient
0 °C to 60 °C
Medium
Max. 60 °C
Material (parts not wetted)
Housing
Stainless steel 1.4301
with rubber sealing ring at the front
Dial
Aluminium, white
Pointer
Aluminium, black
Window
Instrument glass
Material (wetted parts)
Connection
Nylon 66, glass-fibre reinforced
Measuring element:
Diaphragm
Compression spring
NBR
Stainless steel 1.4310
Magnet
Strontium ferrite

Technical specifications
14 MAG 80/100 Dif, MAG 115 Dif
Parameters
Value
Seal
NBR
4.3 Electrical contacts
Table 3: Technical specifications electrical contact
Parameters
Value
Version
Reed contact, single, changeover contact
(SPDT)
Switching voltage
AC/DC 30 V
Switch rating
AC 3 VA
Current
AC/DC 300 mA
Switching hysteresis
Approx. 5 %
Adjustment range:
MAG 80/100 Dif
MAG 115 Dif
35-100 % of full scale value
40-80 % of full scale value
Electrical connection
Connector DIN 43650-A

Transport and storage
MAG 80/100 Dif, MAG 115 Dif 15
4.4 Reed contact (SPDT)
Table 4: MAG 80/100 Dif: Terminal block connection
One contact
Two contacts
Table 5: MAG 80/100 Dif and MAG 115 Dif: One contact
Socket for supply
connections
Connector (after
removal of socket)
5 Transport and storage
CAUTION
Damage to MAG device due to improper transport.
Do not throw or drop MAG.
CAUTION
Damage to MAG due to improper storage.
Protect MAG from shock when storing it.
1
Contact no. 1
2
Load
3
L or (+)
4
N or (-)
5
Contact no. 2
R
Red
B
Black
Y
Yellow
1
L or (+)
2
N or (-)
3
Load
4
SPDT contact
R
Red
B
Black
Y
Yellow

Mounting and commissioning
16 MAG 80/100 Dif, MAG 115 Dif
6 Mounting and commissioning
6.1 Prior to mounting
Verify compatibility of the medium with the wetted parts. See
chapter 4, page 8 for the materials.
The following conditions must be met at the installation site for cor-
rect indication:
Do not expose MAG to heavy vibration or shocks.
Do not use MAG in an environment subject to a magnetic field.
Within an area of 50 mm around the product, only non-magnetic
equipment, parts, etc. may be used. Otherwise, the calibration is
influenced.
If MAG is installed in panels, the panel material must be non-
ferrous.
6.2 Mounting MAG
1. Unpressurise the system.
2. Install MAG horizontally, i.e. align the dial vertically.
3. Verify correct connection of "High pressure" and "Low Pres-
sure", do not interchange the connections.
4. Connect the line for high pressure to the "High" connection and
the line for low pressure to the "Low" connection of MAG.
Use O rings with male connectors in order to avoid excessive
tightening torque and leakage (with parallel threads).
Fig. 10: MAG 80/100: Connection of the lines
1
Hold MAG with
this spanner.
2
Tighten MAG
with this span-
ner.

Mounting and commissioning
MAG 80/100 Dif, MAG 115 Dif 17
5. MAG 115 Dif:
High pressure: Connect the line from the high pressure source
to one of the two high pressure connections.
Low pressure: Connect the line from the low pressure source to
one of the two low pressure connections.
Close the unused connections using the enclosed blind plug.
6. MAG with electrical contact: Use cable with Ø 4 or 8 mm.
7. Ground MAG in compliance with all applicable grounding re-
quirements.
MAG is ready for operation.
6.3 Panel mounting (MAG 115 Dif)
Fig. 11: Panel mounting with fixing clamps MAG 115 Dif
1
Fixing clamps

Mounting and commissioning
18 MAG 80/100 Dif, MAG 115 Dif
6.4 Wall mounting or pipe mounting (option)
Table 6: MAG 80/100 Dif
Wall mounting
Pipe mounting
MAG 115 Dif: Close rear connections with the enclosed metal
plugs.
Table 7: MAG 115 Dif
Wall mounting
Pipe mounting

Operation
MAG 80/100 Dif, MAG 115 Dif 19
7 Operation
CAUTION
Damage to MAG due to improper connection.
Apply high pressure and low pressure to MAG at the same
time in order to avoid damage to internal parts.
MAG has a piston type sensor unit (MAG 80/100 Dif) or a diaphragm
(MAG 115 Dif) which detect the differential pressure.
CAUTION
Damage to the O rings at the male connections and the Buna or
Viton seal in the pressure chamber caused by excessive static
pressure.
Do not exceed the maximum permissible static pressure speci-
fied in chapter 4, page 8.
If the static pressure is within the permissible pressure range, but the
differential pressure exceeds the permissible range, this does not
cause damage to the device. In such a situation, the pointer is at the
utmost right end of the scale.
7.1 Zero correction (MAG 115 Dif)
When no pressure is applied, the pointer must be in the tolerance
bar at the beginning of the scale. If the pointer is not in the tolerance
bar when no pressure is applied, you can turn the inlet pressure
screw to calibrate the pointer. The adjustment screw is located on
the cap at the low pressure side.
Never touch or adjust the screw at the high pressure side!

Operation
20 MAG 80/100 Dif, MAG 115 Dif
7.2 Contact settings (MAG with electrical contact)
The contacts are usually factory-adjusted in order to save the cus-
tomer time. However, you can also set the contact on site.
The supply must not exceed the maximum contact rating!
Table 8: Contact adjustment screw (1)
MAG 80/100 Dif
MAG 115 Dif
The contact adjustment screw(1) is located on the plastic cover
at the high pressure side.
Turn the contact adjustment screw counter-clockwise to in-
crease the switching point, turn it clockwise to decrease the
switching point.
One or two attempts may be necessary to obtain the desired
switching point.
This adjustment procedure can be performed on a test bench or di-
rectly during operation.