Emerson MAS 2600 User manual

Reference Manual
RM 6000-01-001-24
August 2023
MAS 2600
Tank Contents Transmitter

The content of this publication are presented for information purposes only, and while effort has been made to ensure their accuracy, they are not
to be construed as warranties or guarantees, expressed or implied, regarding the products or services described herein or their use or applicabil-
ity. All sales are governed by our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or
specifications of our products at any time without notice. Damcos A/S and Rosemount Tank Radar AB accepts no responsibility for any errors that
may appear in this publication.
As each system may be configured for each delivery, the content and illustrations in this manual may differ from your system.
Copyright © Damcos A/S, 2023
Reference Manual for MAS 2600 in English

MAS2600: Table of Contents Reference Manual
August 2023 RM 6000-01-001-24
1
Table of Contents
Description and Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Description and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Technical Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
MAS 2600 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Measuring Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Temperature Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Mounting Methods. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Amplifier Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Amplifier PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Intrinsically Safe Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Intrinsic Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Intrinsically Safe Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Testing and Recalibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Recalibrating Gauge Transmitter Using Pressure on the Transducer . . . . . . 42
Recalibrating Gauge Transmitter using Vacuum (for gauge transmitters only)
43
Recalibrating the Absolute Transmitter Using Pressure on the Transducer . 44
Maintenance and Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . 45
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
MAS 2600 Test Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Reference Manual MAS2600: Table of Contents
RM 6000-01-001-24 August 2023
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MAS2600: Description and Technical Data Reference Manual
August 2023 RM 6000-01-001-24
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Description and Technical Data

Reference Manual MAS2600: Description and Technical Data
RM 6000-01-001-24 August 2023
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MAS2600: Description and Technical Data Reference Manual
August 2023 RM 6000-01-001-24
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Description and Operation
MAS 2600 Tank Contents Transmitter
The MAS 2600 is a 2-wire 4-20 mA level transmitter consisting of a transducer, an amplifier
and an interconnecting cable.
Transducer
The transducer is a pressure sensitive silicon micro strain gauge sensor mounted in a glass
to metal seal. The sensor is protected by an isolation diaphragm, welded to the transducer
housing, with an oil filling between the sensor and the diaphragm. Pressure changes on
the front of the diaphragm will bring a resistance change in the Wheatstone bridge of the
transducer. This change in the Wheatstone bridge will be transmitted to the amplifier as a
change in the electrical signal.
The transducer is fully welded, housed in titanium with a titanium diaphragm.
All transducer types are submersible (IP68).
The transducer is available in two versions:
•Gauge version
•Absolute version
As optional the transducer is available with a built-in Pt100 temperature sensor.
Cable
The cable is available as a standard version and as a high temperature version.
Amplifier
The amplifier is available in the following options:
•Programmable version: Calibration is made by dip switches and potentiometers
•Differential version: For measuring of both pressure and vacuum
The amplifier is housed in a sea water resistant polyester casing (IP56).
Application
The MAS 2600 has been developed for level measuring in ballast, oil, service and fresh
water tanks as well as tanks containing media which are not hostile to titanium.
Intrinsically Safe in Hazardous Areas
The MAS 2600 is certified for use with standard transmitter safety barriers or Ex isolation
amplifiers and is Ex ia [ia Ga] IIC T4 Gb compliant in accordance with IEC/EN 60079-0 and
IEC/EN 60079-11.
Type Approvals
DNV, GL, LRS, MRS, BV, RINA, KRS, ABS, PRS.
CE marked in accordance with EU directive.

Reference Manual MAS2600: Description and Technical Data
RM 6000-01-001-24 August 2023
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Technical Specification
Transducer Ranges
Gauge 0 - 3.5 / 0 - 7 / 0 - 16 / 0 - 35 m H2O
Absolute 0 - 20.394 / 0 - 35.690 m H2O
Accuracy ± 0.25% F.S. at 20°C
Stability Max. ± 0.1% / Year
TEB (Total Error Band) ± 0.4% F.S. at ±0 to +50°C
± 2.0% F.S. at -20 to +80°C
Overload Capability
Minimum 4 x transducer range with no changes in calibra-
tion.
6 x transducer range burst pressure.
Built-in Temperature Sensor
Pt100
Optional (for safe area only)
Output Current 4-20 mA DC, loop powered 2-wire system
Current Limiting Typical: 25 mA
Maximum: 32 mA
Sensor Materials Housing Titanium Grade 2
Diaphragm Titanium Grade 4
Transducer cable
Safe area Maximum 300 m
Intrinsically safe in
hazardous area
Standard cable: 44m
High temperature cable: 34 m
Operating Temperature Ranges
Safe Area Transducer -20° to +125°C
Standard cable -20° to + 80°C
High temperature
cable
-20° to +125°C
Amplifier -20° to + 80°C
Intrinsically safe in
Hazardous Area
Transducer -20° to +80°C
Standard cable -20° to + 80°C
High temperature
cable
-20° to + 80°C
Amplifier -20° to + 80°C
Ingress Protection Transducer IP 68
Amplifier IP 56
Intrinsic Safety (IS) Ex ia [ia Ga] IIC T4 Gb compliant.

MAS2600: Description and Technical Data Reference Manual
August 2023 RM 6000-01-001-24
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Power Supply
The Power Supply can vary from 17-33 VDC. Permissible load resistance is shown graphi-
cally below.
Transmitter Dimensions
Amplifier Box
Transducer
Rloop max. (KOhm) =
(Uloop - 17 V) / 32 mA

Reference Manual MAS2600: Description and Technical Data
RM 6000-01-001-24 August 2023
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MAS2600: Ordering Information Reference Manual
August 2023 RM 6000-01-001-24
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Ordering Information

Reference Manual MAS2600: Ordering Information
RM 6000-01-001-24 August 2023
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MAS2600: Ordering Information Reference Manual
August 2023 RM 6000-01-001-24
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MAS 2600 Ordering Information
Type
AAbsolute Transducer
GGauge Transducer
HHigh Temperature Gauge Transducer
Transducer Ranges
13,5 mH2O gauge
27,0 mH2O gauge
316,0 mH2O gauge
435,0 mH2O gauge or 0,8 to 3,5 bar absolute
70,8 to 2,0 bar absolute
Temperature Sensor
0without
1Built-in Pt 100 (not available for IS installations)
Cable (length in meters)
XX Standard cable (-20° to 80° C)
Maximum length: Hazardous area 44 m, Safe area 300 m
XX
High temperature cable (-20° to 125° C) (-20° to 80° C for IS installation)
Maximum length: Hazardous area 34 m, Safe area 300 m
Mounting
0without fittings
1brackets for internal mounting
2pole mounting
31” pipe end mounting
4flange mounting DN 25
5flange mounting DN 40
6flange mounting DN 50
9flexible rubber tube mounting (add length in mm)
Pflexible PTFE tube mounting (add length in mm)
VDN 25 flange with 1” ball valve mounting
A - M replacement
Amplifier Box
0not supplied
1standard box with PG 11 / PG 11
2standard box with PG 11 / PG 13,5
3standard box with PG 11 / PG 16
5standard box with PG 13,5 / PG 13,5
Amplifier PCB
0not supplied
Pprogrammable output range gauge
Ddifferential output range gauge
X X X - XX - X / X X

Reference Manual MAS2600: Ordering Information
RM 6000-01-001-24 August 2023
12
Type
MAS 2600 -XXX-XX-X/XX
Selecting the Transducer Type
Gauge and High Temperature Gauge Transducers
The Gauge Transmitter is normally used on dry and pressure neutral locations.
The Gauge Transmitter is available in 4 ranges:
•0 - 3.5 mH2O.
•0 - 7.0 H2O.
•0 - 16.0 mH2O.
•0 - 35.0 mH2O.
Absolute Transducers
The Absolute Transmitter is typically used if the amplifier is exposed to water, e.g. on open
deck.
The Absolute Transmitter is available in 2 ranges: 0 - 20 and 0 - 35 mH2O. In practice this
means
10 mH2O less than the nominal range because of the atmospheric pressure which must be
taken into consideration when choosing the transducer.
A transducer with an effective range larger than the tank height should be selected.
Type
AAbsolute Trans-
ducer
The absolute transducer has no breather pipe, because it refers
to absolute vacuum. An atmospheric pressure sensor is used to
compensate for the atmospheric pressure. The absolute trans-
ducer is especially suitable for open deck applications, where
the amplifier box may be exposed to flooding.
GGauge Trans-
ducer
The gauge transducer is fitted with a breather pipe at the back
of the diaphragm to compensate for the atmospheric pressure.
The breather pipe is connected to a vent plug in the amplifier
box. The gauge transducer is suitable for most applications.
HHigh Tempera-
ture Gauge
Transducer
The transducer is mounted with a special high temperature
cable and designed for heated tanks e.g. HFO tanks, and other
applications with high tank media temperatures.

MAS2600: Ordering Information Reference Manual
August 2023 RM 6000-01-001-24
13
Measuring Ranges
MAS 2600 -XXX-XX-X/XX
Gauge Transmitter
The MAS 2600 Gauge Transmitter is supplied in 4 ranges. In the programmable amplifier
the measuring range is divided into 8 sub-ranges and operated by means of the range
select switch.
The transmitter output signal can be adjusted to 20 mA within the sub-ranges as of the
table below.
Absolute Transmitter
The MAS 2600 Absolute Transmitter is available in two ranges.
The output signals are calibrated as follows:
Range
no. Transducer Type
Type 1:
0 - 3.5 mH2O
Type 2:
0 - 7.0 mH2O
Type 3:
0 - 16.0 mH2O
Type 4:
0 - 35.0 mH2O
10.20 - 0.37 mH2O 0.20 - 0.30 mH2O 0.50 - 0.75 mH2O 1.00 - 1.90 mH2O
20.37 - 0,54 mH2O 0.30 - 0.50 mH2O0.75 - 1.00 mH2O1.90 - 2.80 mH2O
30,54 - 0.73 mH2O 0.50 - 0.70 mH2O 1.00 - 1.50 mH2O2.80 - 3.90 mH2O
40.73 - 1.10 mH2O 0.70 - 1.10 mH2O1.50 - 2.50 mH2O3.90 - 5.80 mH2O
51.10 - 1.92 mH2O 1.10 - 1.80 mH2O2.50 - 4.00 mH2O5.80 - 9.90 mH2O
61.92 - 3.10 mH2O 1.80 - 3.00 mH2O4.00 - 6.00 mH2O9.90 - 15.30 mH2O
73.10 - 3.50 mH2O 3.00 - 4.80 mH2O6.00 - 10.00 mH2O15.30 - 25.10
mH2O
8Not Applicable 4.80 - 7.10 mH2O10.00 - 16.00
mH2O
25.10 - 35.60
mH2O
Transducer Type
40.8 - 3.5 bar abs
70.8 - 2.0 bar abs

Reference Manual MAS2600: Ordering Information
RM 6000-01-001-24 August 2023
14
Selecting the Measuring Range
When selecting the measuring range it is important to consider the tank height, vent pipe
height, the tank type and the specific gravity (SG) of the tank contents.
The transducer measures the height of the fluid from the transducer diaphragm to the sur-
face of the fluid, including the fluid in the vent pipe.
To ensure measuring accuracy a transducer type within the range no. 4, 5, 6, 7 and 8 is rec-
ommended.
Guidelines for selection of transducer measuring ranges are set out in the following.
Basic Rules
1. The selected measuring range must be larger than the tank height.
2. The selected measuring range must be larger than: (tank height + vent pipe height) / 2
Example:
Tank height = 6 m
Vent pipe height = 14 m
1. The selected measuring range must be larger than 6 m due to the height of the tank.
2. The selected measuring range must be larger than (6 + 14) / 2 = 10 m due to the total
height of the tank and the vent pipe combined.
Select a transducer with a measuring range of 16 mH2O as this is the next measuring
range larger than 10 m.
Turn the range select switch on the amplifier to range No. 7.
Normally the selection of transducer, range select and calibration are done by Marine Tank
Management.
Special consideration applies to e.g. forepeak tanks and draft measuring when selecting
the measuring range of the transducer.
MAS 2600 Amplifier box
Flange mounted
G02 2P0 13
Se nsor p os. above
l owest poi nt
Tankheight
Vent pi pe he ight
TWO WIRE TRANSMITTER
2600SERIES
90-C.95948
T5
Cint=10nF
C
CERTIFICATEREF.:
4-20 mA
Lint =20uH
xi EE Xa
MARINEAUTOMATIONDENMARK
S/N:
Umax=33V
T amb.:-40to+85°C
I45mAK =<
2600


MAS2600: Ordering Information Reference Manual
August 2023 RM 6000-01-001-24
15
If the transducer is installed in tanks which may have excessive dynamic stresses such as
e.g. high pump pressure, long bottomed tanks with a risk of sloshing etc., contact Marine
Tank Management.
Forepeak Tank
If transducer measuring range > tank height: Select the next measuring range.
Example:
Tank height 12 m.
Based on the tank height a transducer with a measuring range of 16 mH2O should be
selected.
However, due to the dynamic conditions in the forepeak tank, a transducer with a measur-
ing range of 35 mH2O, i.e. the next in line, should be selected.
Turn amplifier range select switch to range No. 6.
Draft
Transducer measuring range > max. draft minus sensor position.
This rule applies provided the transducer is mounted in accordance with the installation
drawing for draft transmitters (vent pipe min. 1"). The sensor may be mounted directly on
the sea valve with an air release valve depending on ship type and environment, always
consult Marine Tank Management for proper installation guidance.
TWOWIRETRANSMITTER
2600SERIES
90-C.95948
T5
Cint=10nF
C
CERTIFICATEREF.:
4-20mA
Lint=20uH
xi EE Xa
MARINEAUTOMATIONDENMARK
S/N:
Umax=33V
T amb.: -40to+85°C
I 45mA
K =
<
2600
MAS 2600 amplifier box
Vent pipe min. 1”
Weather deck
Min. Draft
Class approved
sea valve
Sensor pos. above
ships hull
Ships hull

Reference Manual MAS2600: Ordering Information
RM 6000-01-001-24 August 2023
16
Temperature Sensor
MAS 2600 -XXX-XX-X/XX
The transducer can be supplied with a built-in Pt100 temperature sensor. The temperature
sensor will only give a proper reading, if the transducer is an internally mounted type.
Temperature Sensor
0Without temperature sensor.
1With temperature sensor.

MAS2600: Ordering Information Reference Manual
August 2023 RM 6000-01-001-24
17
Cable
MAS 2600 -XXX-XX-X/XX
Two types of transducer cables are available. The standard cable for applications with tem-
peratures up to 80C, and high temperature cable for applications with temperatures up to
125C. The transducer cable is delivered in whole meters.
To make the MAS 2600 transmitter easy to install, and for later service purposes, the trans-
ducer cable should be as short as possible, though considering the position of the trans-
ducer and amplifier box.
Note! Maximum cable length:
Safe area
Standard cable 300 m
High temperature cable 300 m
Hazardous area
Standard cable 44 m
High temperature cable 34 m

Reference Manual MAS2600: Ordering Information
RM 6000-01-001-24 August 2023
18
Mounting Methods
MAS 2600 -XXX-XX-X/XX
Brackets for Internal Mounting (dwg no. P022P010)
The brackets are U-shaped and manufactured of 2 mm ASTM 316L plated steel. Diameter
of mounting holes: 11.5 mm. The transducer is secured by means of a spring fitted into two
holes in the “U” shape, and can be mounted/dismounted without the use of tools.
When installing in hazardous areas the cable must be protected by a steel pipe welded to
the tank.
Also consider not to install to close the pump inlets.
Note! Internal mounting in service tanks is not recommended due to limited possibili-
ties to perform service and maintenance.
Bulkhead
Tank bottom
TWO WI RE TRANSMITTER
2600 SE R IES
90-C.95948
T5
Cint=10 nF
C
CERTIFICATEREF.:
4-20 mA
Lint=20uH
x
i EE X
a
MARINEAUTOMATIONDENMARK
S/N:
Umax=33 V
T amb. : -40 to + 85 °C
I 45 mAK=
<
2600
Tank top
125.0
160.0
38.0
55.0
40.0
45.0