AFRISO DIM 20 User manual

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Überwachungsgeräte
für Haustechnik,
Industrie und Umweltschutz
Lindenstraße 20
74363 Güglingen
Telefon [phone]
Service [phone]
Telefax [phone]
[email protected]
www.afriso.de
 Read manual before use!
 Observe all safety information!
 Keep manual for future use!
06.2011 0
854.001.0467
Instruction Manual
Digital Pressure Gauge
DIM 20

2 DIM 20
Contents
1About this instruction manual..................................................................................3
1.1 Structure of warning.....................................................................................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 Qualification of personnel.............................................................................5
2.5 Modifications to the product.........................................................................5
2.6 Use of spare parts and accessories.............................................................5
2.7 Liability information ......................................................................................5
3Product description..................................................................................................6
4Specifications ..........................................................................................................7
4.1 Approvals, tests and conformities................................................................8
5Transportation and storage.....................................................................................9
6Installation and commissioning ...............................................................................9
6.1 Connecting the battery...............................................................................11
7Operation...............................................................................................................12
7.1 Switching unit on and off............................................................................12
7.2 Indication of measured value.....................................................................13
7.3 Menu ..........................................................................................................13
8Maintenance..........................................................................................................18
8.1 Maintenance intervals................................................................................18
8.2 Maintenance activities................................................................................18
9Troubleshooting.....................................................................................................18
10 Shutting down and disposal ..................................................................................19
11 Returning the device..............................................................................................19
12 Spare parts and accessories.................................................................................19
13 Warranty................................................................................................................19
14 Copyright...............................................................................................................20
15 Customer satisfaction............................................................................................20
16 Addresses..............................................................................................................20
17 Appendix................................................................................................................20
17.1 Declaration of conformity ...........................................................................20

About this instruction manual
1 About 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 Structure of warning
WARNING TERM
The type and source of danger is shown here.
 Precautions to take in order to avoid the danger are shown
here.
There are three different levels of warning:
Warning term Meaning
DANGER Imminent danger!
Failure to observe the information will result in
death or serious injuries.
WARNING Possible imminent danger!
Failure to observe the information may result in
death or serious injuries.
CAUTION Dangerous situation!
Failure to observe the information may result in
minor or serious 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 several steps
 Result of an activity
• Bulleted list
Text Indication on a display
Highlighting Highlighting
DIM 20 3

Safety
2 Safety
2.1 Intended use
The digital pressure gauge DIM 20 is exclusively suitable for measur-
ing the pressure of gaseous or liquid, not highly viscous, not crystal-
lising and not curing media which are not aggressive to the specified
materials. The digital pressure gauge DIM 20 is designed for applica-
tions in the hydraulics, pneumatics as well as the process plant and
machinery sectors.
 The digital pressure gauge may only be used within the speci-
fied pressure shown on the type designation plate.
 Observe the directives, safety requirements and selection crite-
ria according to EN 837-2 for the respective application cases.
Any use other than the use explicitly stated in this instruction manual
is not permitted.
2.2 Predictable incorrect application
The digital pressure gauge DIM 20 must never be used in the follow-
ing:
• Hazardous areas (ex)
If the device is operated in hazardous areas, sparks may cause
deflagrations, fires or explosions
• Applications involving persons or animals
• As a dynamometer
2.3 Safe handling
The digital pressure gauge DIM 20 represents state-of-the-art tech-
nology and is manufactured in accordance with the pertinent safety
regulations. Each unit is subjected to a function and safety test prior
to despatch.
 Operate the digital pressure gauge DIM 20 only when it is in
perfect condition. Always observe the instruction manual, all
pertinent local and national directives and guidelines as well as
health and safety regulations and directives regarding the pre-
vention of accidents.
 Install the instrument only when it is not under pressure and
switched off.
Shock, humidity and extreme ambient conditions have an adverse
effect on the proper functioning of the digital pressure gauge.
 Protect DIM 20 from shock.
 Use DIM 20 only inside rooms.
 Protect DIM 20 from humidity.
4 DIM 20

Safety
Increased danger
The danger increases in case of gases or liquids under high pres-
sure. If parts under pressure become leaky or burst, staff in front of
the digital pressure gauge must not be endangered by leaking me-
dium of parts of the device.
All pertinent guidelines and directives must be observed if dangerous
media such as the media listed below are measured:
• Oxygen
• Acetylene
• Flammable media
• Toxic media
This also applies to refrigerating plants, compressors, etc.
2.4 Qualification of personnel
The product may only be installed, commissioned, operated, main-
tained, shut down and disposed of by qualified, specially trained per-
sonnel.
Electrical work may only be carried out by qualified electricians in
accordance with local and national regulations.
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.
2.6 Use of spare parts and accessories
Use of unsuitable spare parts and accessories may cause damage
to the product.
 Use only the manufacturer’s genuine spare parts and accesso-
ries (refer to chapter 0, page 19).
2.7 Liability information
The manufacturer shall not be liable for any direct or consequential
damage resulting from failure to observe the technical instructions,
guidelines and recommendations.
The manufacturer and the sales company shall not be liable for costs
or damages incurred by the user or by third parties in the use or ap-
plication of this device, particularly in case of improper use of the de-
vice, misuse or malfunction of the connection, malfunction of the de-
vice or of connected devices. The manufacturer or the sales com-
pany shall not be liable for damages resulting from any use other
than the use explicitly stated in this instruction manual.
The manufacturer shall not be liable for misprints.
DIM 20 5

Product description
3 Product description
The digital pressure gauge DIM 20 can be installed simply and
quickly on site. The instrument housing is rotatable and as such en-
sures good readability even under unusual connection conditions.
DIM 20 can be operated and configured via a menu system and a
3 key pad. The adjusted parameters are memorized in an EEPROM
(electronic memory) and remain memorized even when the battery is
changed.
In addition to the indication of information about the measuring
range, different pressure units as well as the number of decimal
points can be configured. The starting value and full scale value of
the measurement range can be re-calibrated by the customer on
site. The original factory calibration can also be re-instated, if re-
quired. Excess over- or under-pressure is indicated.
Product identification
The instrument is identified by its type designation plate. This shows
the most important data. The order code identifies the product in de-
tail. The programme version of the operating software is shown on
the display for approx. 1 second after the instrument has been
switched on.
 In case of any query, please have the programme version and
order code information readily available. 1 Specified pres-
sure
2 Order number
3 Serial number
Fig. 1: Type designation plate
6 DIM 20

Specifications
4 Specifications
Table 1: Specifications
Parameter Value
General
Mechanical connections EN 837
Dimensions (W x H x D) 75 x 133 x 49 mm
PN= 400 bar: Height + 13.5 mm
Weight Approx. 300 g
Display LC-Display, 45 x 20 mm
4.5-digit 7-segment main display for
indication of the measured value, digit
height 9.5 mm, measuring range ±19999
6-digit 14-segment additional display for
unit indication, digit height 6.8 mm
Mounting As required. The upper housing part with
display can be turned through 330°
Mechanical stability Vibration: 5 g RMS (20-2000 Hz)
Shock: 100 g/11 ms
Wetted parts Pressure connection, gaskets, dia-
phragm seal
Supply 3.6 V lithium battery
Life expectancy of bat-
tery Max. 8 years (depending on use)
Mechanical life expec-
tancy > 100 x 106load cycles
Data storage EEPROM (stable)
AD-converter resolution 14 Bit
Materials
Display housing PA6, glass-reinforced
Materials (wetted parts)
Gaskets FKM (others on request)
Pressure connection Stainless steel 1.4301
Diaphragm seal Ceramic Al2O396%
DIM 20 7

Specifications
8 DIM 20
Parameter Value
Signalverhalten
Accuracy
≤
± 0,5 % FSD
Deviation according to BSFL (includes
non-linearity, hysteresis and reproduci-
bility)
Measurement speed 5/s
Operating temperature range
Temperature error
≤
± 0,5 % FSD/10 K in compensated
range 0 °C to +70 °C
Ambient -20 °C to +45 °C
Medium -20 °C to +125 °C
Storage -30 °C to +80 °C
Electrical safety
Protection IP 51 EN 60529
Electromagnetic compatibility (EMC)
Noise suppression According to EN 61326
Noise immunity According to EN 61326
Table 2: Input value
Parameter Value [bar]
Nominal pressure rel./abs. -1…0 1400 700
Permissible overpressure 33650 1.200
Burst pressure 44700 1.500
4.1 Approvals, tests and conformities
DIM 20 conforms to the Pressure Equipment Directive
(97/23/EC).and the EMC Directive (2004/108/EC).

Transportation and storage
5 Transportation and storage
CAUTION
Damage to the device due to improper transportation.
 Do not throw or drop the device.
CAUTION
Damage to the device due to improper storage.
 Protect the device against shock when storing it.
 Store device in a clean and dry environment.
 Store device only within its permissible temperature range.
6 Installation and commissioning

The process connection must not be under pressure and the
DIM 20 is switched off.
CAUTION
Damage to the instrument and its diaphragm through incorrect
handling.
 Handle DIM 20 very carefully in its packed as well as unpacked
state.
 Remove packaging and protective cap of the instrument only
just prior to installation in order to prevent damage to the dia-
phragm.
 Keep the protective cap in a safe place for future use.
 Treat the unprotected diaphragm with great care. It is very eas-
ily damaged.
 After removal or disconnection of the unit refit the protective cap
over the diaphragm.
 Do not use force when connecting the instrument.
 The display and the plastic housing are fitted with a rotation
limiter. Do not apply excessive force to the display or housing
when rotating the instrument.
DIM 20 9

Installation and commissioning
1. Check the measuring range shown on the type designation
plate. Make sure the maximum pressure at the process connec-
tion is within the allowed measuring range.
2. Remove instrument carefully from its packaging.
Mechanical connection procedure
Fig. 2: Connection according to EN 837
1. Seal the connection of the DIM 20 with a suitable gasket, e.g.
copper gasket or similar, which is compatible with the medium
and pressure to be measured. The sealing gasket is not part of
our scope of supply.
2. Ensure that the sealing surface of the connection part is in per-
fect condition.
3. Screw in the DIM 20 by hand into the connection thread.
4. Tighten DIM 20 with an open ended spanner SW24 with max.
20 Nm.
10 DIM 20

Installation and commissioning
6.1 Connecting the battery
CAUTION
Tearing of cables when removing the upper part of the housing.
 Carefully remove the upper housing part.
1. Turn the upper housing part (1) clockwise or counter-clockwise
and remove it from the housing at the same time.
WARNING
Danger of explosion in case of short circuit of the lithium bat-
tery.
 Do not short-circuit the lithium battery.
2. Insert battery (1) into holder (2).
DIM 20 11

Operation
3. Plug the connector of the battery cable (1) into the socket (2) on
the printed circuit board.
4. Push the upper housing part into position.
7 Operation
7.1 Switching unit on and off
Fig. 3: Switching unit on
12 DIM 20

Operation
Fig. 4: Switching unit off
7.2 Indication of measured value
1 Battery condition
2 Measured value
3 Unit of measurement
Fig. 5: Indication of the measured value and unit of measurement
When the reading is below the limit of the lower range the message
“UNDER” appears in the lower display line and “UPPER” appears, if
the range is exceeded.
 Press OK to call up the menu.
7.3 Menu All adjustments are permanently memorized in an EEPROM and can
be viewed also after a battery change.
Changes are only checked and memorized after pressing the OK key
and after leaving the menu point.
 Press OK to call up the menu.
1 Battery condition
2 Adjusted value
3 Menu point
Fig. 6: Indication of the measured value and unit of measurement
DIM 20 13

Operation
Move forward in menu or increase
indication value.
Move backwards in menu or decrease
indication value.
OK Call up individual menu points or con-
firm an adjusted value.
Fig. 7: Allocation of keys
Fig. 8: Menu structure
Menu 1: Indicate start of measuring range
LOWER  Call up menu point “LOWER”.
The start of measuring range is shown in the upper display line. This
value was chosen at the time of ordering and cannot be changed.
14 DIM 20

Operation
Menu 2: Indicate maximum measuring range
 Call up menu point “UPPER”.
UPPER The maximum measuring range is shown in the upper display line.
This value was chosen at the time of ordering and cannot be
changed.
Menu 3: Changing the position of the decimal point
DECIMA 1. Call up menu point “DECIMA”.
2. Press OK.

“DECIMA” starts to blink.
3. Use or to select the required position of the decimal point.
4. Press OK to confirm the selection.
Attention: Depending on pressure range and selected unit of meas-
urement only a limited number of decimal points may be possible.
Menu 4: Changing the pressure unit
UNIT 1. Call up menu point “UNIT”.
2. Press OK.

The currently adjusted unit starts to blink.
3. Use or to select the required unit:
bar, mbar, PSI, InHg, cmHg, mmHg, hPa, kPa, Mpa or mWs.
4. Press OK to confirm the selection.
Attention: When changing the unit it may also be necessary to
change the decimal point so that the actually present pressure can
continue to be displayed correctly. Depending on the pressure range,
it is possible that not all of the units can be used.
Menu 5: Changing the automatic switch-off
SW OFF 1. Call up menu point “SW OFF”.
2. Press OK.

“SW OFF” starts to blink.
3. Use or to select the required figure:
Figures 0 to 5 are available. With figure 0 the automatic switch-
off is disabled. With figures 1 to 5 the automatic switch-off time
is determined in number of minutes.
4. Press OK to confirm the selection.
DIM 20 15

Operation
Menu 6: Changing the minimum pressure indication
1. Call up menu point “P MIN”.
P MIN 2. Press OK.

“P MIN” starts to blink.
3. Press to set the currently present pressure as the minimum
value or
press in order to set the value to Zero.
4. Press OK to exit from this menu point.
Menu 7: Changing the maximum pressure indication
P MAX 1. Call up menu point “P MAX”.
2. Press OK.
3. “P MAX” starts to blink.
4. Press to set the currently present pressure as the maximum
value or
press to set the value to Zero.
5. Press OK to exit from this menu point.
Menu 8: Calibrating the Zero point
CAL ZP Should you notice a deviation of the indicated value in relation to the
Zero point, the unit can then be recalibrated. A reference pressure is
necessary if the Zero point is different from ambient pressure.
1. Call up menu point “CAL ZP”.
2. Press OK.

“CAL ZP” starts to blink.
3. If the Offset is different from the ambient pressure, pressurize
the unit by applying a reference pressure. This pressure must
then correspond to the required starting pressure of the measur-
ing range.
4. Press to read the pressure.
5. Press OK to memorize the displayed signal as the start of the
measuring range.
Should this configuration lead to a worsening of the original results,
for instance due to lack of a suitable reference pressure, the original
factory calibration as per original order can be re-instated via the
menu 10 “LD FAC”.
16 DIM 20

Operation
Menu 9: Calibrating the maximum end point
Should you notice a deviation of the indicated value in relation to the
maximum end point, the unit can be recalibrated. A suitable refer-
ence pressure is necessary for this task.
CAL EP
1. Call up menu point “CAL EP”.
2. Press OK.

“CAL EP” starts to blink.
3. Pressurize the instrument with a reference pressure. This pres-
sure must correspond to the pressure of the maximum end
point.
4. Press to read the pressure.
5. Press OK to memorize the currently displayed signal as the
maximum end point.
Should this configuration lead to a worsening of the original results,
for instance due to lack of a suitable reference pressure, the original
factory calibration as per original order can be re-instated via the
menu 10 “LD FAC”.
Menu 10: Loading of factory calibration
LD FAC 1. Press OK.
2. Press to load the factory calibration according to the original
order.

After the loading process, the message “LOADED” appears
briefly on the display followed by “OK”.

The unit then exits this menu point automatically.
Checking of calibrated values
OK
ERROR Upon exiting the menu the adjusted parameters are checked in rela-
tion to each other and with reference to the basic instrument data. If
the message “OK” appears in the left hand bottom of the display, the
configuration was successful. If the message “ERROR” appears, then
at least one of the adjusted values is outside the permissible range.
This is for instance the case when the Digital Pressure Gauge has a
nominal pressure range of 400 bar and in the menu “DECIMA” four
decimal points were programmed. If the error message appears, the
last adjusted and functionally correct parameters are retained. Dur-
ing the configuration of the unit a conversion of the measuring
ranges (Menus “UPPER” and “LOWER”) to the new units takes place
only after exiting the menu system..
Depending on the pressure range and the number of displayable fig-
ures, it may not be possible to use all measurement units.
DIM 20 17

Maintenance
8 Maintenance
8.1 Maintenance intervals
Table 3: Maintenance intervals
When Activity
 Change battery, see below.Battery condition appears
in the display.
 Clean instrument with non-
aggressive cleaning solution.
As required.
8.2 Maintenance activities
Replacing the battery
1. Remove the old battery and replace with a new battery (refer to
chapter 6.1, page 11).
2. Batteries may not be disposed of together with unsorted house-
hold waste. Return empty batteries to a collection point or to
your dealer for environmentally compatible disposal.
The memorized instrument adjustments are retained during the bat-
tery changing process.
9 Troubleshooting
Repair work may only be carried out by qualified, specially trained
personnel.
Table 4: Troubleshooting
Problem Possible reason Remedy
“ERROR” appears
in menu during
configuration.
At least one of the
adjusted values is
outside the permissi-
ble range.
 Check adjusted
values, refer to
page 14.
Other malfunction. –  Return the device
to the manufacturer
(refer to chap-
ter 11, page 19).
18 DIM 20

Shutting down and disposal
10 Shutting down and disposal

The instrument is switched off and under no pressure.
1. Remove the device (see chapter 6, page 9, steps in reverse se-
quence).
2. To protect the environment, this device must not be disposed
of together with the normal household waste. Dispose of the de-
vice according to local directives or council guidelines.
This device consists of materials that can be reused by recycling
firms. The electronic inserts can be removed easily and are con-
structed from recyclable materials.
If you do not have the opportunity to dispose of the old device in ac-
cordance with environmental regulations, please contact us for pos-
sibilities to dispose of it or to return it (refer to chapter 11, page 19).
11 Returning the device
In order to protect the environment and our staff, we will transport,
check, repair or dispose of returned devices only if this is possible
without risk to health and environment.
 Always enclose a contamination declaration when returning a
device. This declaration confirms that the device does not pre-
sent a hazard.
 The declaration of decontamination can be downloaded at
www.afriso.com.
We cannot process your returns without a contamination declaration.
Thank you for your understanding.
If the device was used with hazardous media:
1. Decontaminate the device in accordance with all pertinent direc-
tives.

The device is free from hazardous media.
2. Enclose proof of decontamination in accordance with all perti-
nent directives when returning the device.
12 Spare parts and accessories
Part Part No.
3.6 V lithium battery 68309
13 Warranty
The manufacturer’s warranty for this product is 24 months from date
of purchase. This warranty applies to all countries in which this pro-
duct is sold by the manufacturer or its authorised representatives.
DIM 20 19

Copyright
14 Copyright
The manufacturer holds the copyright to this manual. This manual
may only be reprinted, translated, copied in part or in whole with the
prior written consent of the manufacturer.
We reserve the right to modify any specifications or alter any illustra-
tions in this manual without prior notice.
15 Customer satisfaction
Customer satisfaction is our prime objective. Please get in touch with
us if you have any questions, suggestions or problems regarding
your product.
16 Addresses
The addresses of our worldwide representatives can be found on the
Internet at www.afriso.com.
17 Appendix
17.1 Declaration of conformity
20 DIM 20