Endress+Hauser Proline t-mass I 500 Manual

Insertion flowmeter with long-term stability as remote version with up to 4
I/Os
Application
• Measuring principle is characterized by a high operable flow
range and direct mass flow measurement
• Measurement of utility and process gases as well as gas
mixtures in circular piping or rectangular ducts
Device properties
• Insertion version for DN 80 to 1500 (3 to 60")
• Bidirectional measurement; high measuring performance
• Patented drift-free sensor with SIL 2
• Remote version with up to 4 I/Os
• Backlit display with touch control and WLAN access
• Standard cable between sensor and transmitter
Your benefits
• Flexible, convenient programming based on 21 standard
gases or freely definable gas mixtures thereof
• High level of process control – premium measurement
accuracy and repeatability
• Reliable monitoring – detection of process disturbances and
reverse flow
• Flexible installation – suitable for large dimensional range
and circular pipes or rectangular ducts
• Full access to process and diagnostic information –
numerous, freely combinable I/Os and fieldbuses
• Reduced complexity and variety – freely configurable I/O
functionality
• Integrated verification – Heartbeat Technology
Products Solutions Services
Technical Information
Proline t-mass I 500
Thermal mass flowmeter
TI01503D/06/EN/02.21
71528716
2021-07-01

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Table of contents
About this document ........................ 4
Symbols .................................... 4
Function and system design ................... 6
Measuring principle ............................ 6
Measuring system ............................. 7
Equipment architecture ......................... 9
Dependability ............................... 9
Input .................................... 12
Measured variable ............................ 12
Measuring range ............................. 12
Operable flow range ........................... 14
Input signal ................................ 14
Output .................................. 16
Output and input variants ....................... 16
Output signal ............................... 18
Signal on alarm .............................. 22
Load ..................................... 23
Ex connection data ........................... 23
Low flow cut off ............................. 24
Galvanic isolation ............................ 24
Protocol-specific data .......................... 24
Power supply ............................. 25
Terminal assignment .......................... 25
Available device plugs ......................... 25
Pin assignment, device plug ...................... 26
Supply voltage .............................. 26
Power consumption ........................... 26
Current consumption .......................... 26
Power supply failure .......................... 26
Electrical connection .......................... 27
Terminals ................................. 32
Cable entries ............................... 32
Cable specification ............................ 32
Performance characteristics .................. 36
Reference operating conditions ................... 36
Maximum measured error ....................... 36
Repeatability ............................... 37
Response time .............................. 37
Influence of ambient temperature ................. 37
Influence of medium temperature .................. 37
Influence of medium pressure .................... 37
Installation ............................... 38
Orientation ................................ 38
Installation instructions ........................ 38
Pipes ..................................... 38
Insertion depth .............................. 38
Installation conditions for nipples .................. 40
Aligning to the flow direction .................... 40
Inlet and outlet runs .......................... 40
Mounting the transmitter housing ................. 45
Environment .............................. 46
Ambient temperature range ..................... 46
Storage temperature .......................... 46
Atmosphere ................................ 46
Degree of protection .......................... 46
Vibration- and shock-resistance ................... 46
Interior cleaning ............................. 47
Electromagnetic compatibility (EMC) ............... 47
Process .................................. 48
Medium temperature range ...................... 48
Medium pressure range ........................ 48
Pressure/temperature ratings .................... 48
Flow limit ................................. 48
Pressure loss ............................... 49
Thermal insulation ........................... 49
Heating ................................... 49
Hot tap, process pressure ....................... 50
Cold tap, ambient pressure ...................... 50
Mounting boss .............................. 50
Mechanical construction .................... 51
Dimensions in SI units ......................... 51
Dimensions in US units ......................... 59
Materials .................................. 66
Weight ................................... 68
Process connections ........................... 69
Human interface ........................... 69
Operating concept ............................ 69
Languages ................................. 69
Local operation .............................. 69
Remote operation ............................ 70
Service interface ............................. 71
Supported operating tools ....................... 72
HistoROM data management ..................... 74
Certificates and approvals ................... 76
CE mark ................................... 76
RCM-tick symbol ............................. 76
Ex approval ................................ 76
Functional safety ............................. 77
HART certification ............................ 77
Radio approval .............................. 77
Additional certification ......................... 77
Other standards and guidelines ................... 78
Classification of process sealing between electrical
systems and (flammable or combustible) process fluids in
accordance with ANSI/ISA 12.27.01 ................ 78
Ordering information ....................... 79
Application packages ....................... 80
Diagnostics functions .......................... 80
Heartbeat Technology ......................... 80
Second gas group ............................ 80

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Accessories ............................... 81
Device-specific accessories ...................... 81
Communication-specific accessories ................ 83
Service-specific accessories ...................... 84
System components ........................... 84
Supplementary documentation ............... 85
Standard documentation ........................ 85
Device-dependent additional documentation .......... 85
Registered trademarks ...................... 86

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About this document
Symbols Electrical symbols
Symbol Meaning
Direct current
Alternating current
Direct current and alternating current
Ground connection
A grounded terminal which, as far as the operator is concerned, is grounded via a
grounding system.
Protective Earth (PE)
A terminal which must be connected to ground prior to establishing any other
connections.
The ground terminals are situated inside and outside the device:
• Inner ground terminal: Connects the protectiv earth to the mains supply.
• Outer ground terminal: Connects the device to the plant grounding system.
Communication symbols
Symbol Meaning
Wireless Local Area Network (WLAN)
Communication via a wireless, local network.
LED
Light emitting diode is off.
LED
Light emitting diode is on.
LED
Light emitting diode is flashing.
Symbols for certain types of information
Symbol Meaning
Permitted
Procedures, processes or actions that are permitted.
Preferred
Procedures, processes or actions that are preferred.
Forbidden
Procedures, processes or actions that are forbidden.
Tip
Indicates additional information.
Reference to documentation
A
Reference to page
Reference to graphic
Visual inspection

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Symbols in graphics
Symbol Meaning
1, 2, 3, ... Item numbers
1.
,
2.
,
3.
, … Series of steps
A, B, C, ... Views
A-A, B-B, C-C, ... Sections
-
Hazardous area
.
Safe area (non-hazardous area)
Flow direction

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Function and system design
Measuring principle The thermal measuring principle is based on the cooling of a heated resistance thermometer
(PT100) from which heat is extracted by the passing medium.
A0016823
The medium passes two PT100 resistance thermometers in the measurement section. One of these
is used in the conventional way as a temperature sensor, while the other serves as a heating
element. The temperature sensor monitors and records the effective process temperature while the
heated resistance thermometer is kept at a constant differential temperature (compared to the
measured process temperature) by controlling the electrical current used by the heating element.
The greater the mass flow passing over the heated resistance thermometer, the greater the extent to
which cooling takes place and therefore the stronger the current required to maintain a constant
differential temperature. This means that the heat current measured is an indicator of the mass flow
rate of the medium.
Gas Engine
The integrated Gas Engine functionality ensures maximum measuring performance for flow
measurement. The Gas Engine developed by Endress+Hauser is a software-based database of typical
standard gases and their specific properties. The Gas Engine calculates the properties of gas mixtures
based on the percentage shares of up to 8 gas components.
The Gas Engine functionality enables:
• Calibration with air; no need for expensive and complex calibration with real gas
• Precise conversion of air to other gases; no recalibration required
• Exact measurement of single gases and also of gas mixtures
• Dynamic correction of pressure and temperature changes
The device can be configured for 21 freely selectable gases and water vapor.
Gases available for selection:
• Ammonia
• Argon
• Butane
• Chlorine
• Hydrogen chloride
• Ethane
• Ethylene
• Helium
• Carbon dioxide
• Carbon monoxide
• Krypton
• Air
• Methane
• Neon
• Ozone 1)
• Propane
• Oxygen
• Hydrogen sulfide
• Nitrogen
• Hydrogen
• Xenon
1) Can only be selected as an individual gas or as a gas mixture with oxygen.
Mixtures of these gases, e.g. natural gas, can be programmed easily and quickly on the basis of the
percentage shares.
For other gases, contact the Endress+Hauser sales organization responsible for your area.

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Bidirectional measurement and reverse flow detection
Conventional thermal mass flowmeters cannot distinguish between forward and reverse flows. They
always record flow in both directions with the same algebraic sign. Endress+Hauser's thermal
flowmeter is available in this conventional unidirectional design, or as a bidirectional flowmeter.
Both versions feature sensors that are protected in stainless steel. The bidirectional version can
distinguish between the two flow directions and measure and totalize the flow in both directions
with the same degree of accuracy.
The version to detect reverse flow only measures flow in the positive direction. The reverse flow is
detected by the device but is not totalized.
Measuring system The measuring system consists of a transmitter and a sensor. The transmitter and sensor are
mounted in physically separate locations. They are interconnected by connecting cables.
Proline 500 – digital transmitter
For use in applications not required to meet special requirements due to ambient or operating
conditions.
2
3
1
A
B
A Non-hazardous area or Zone 2; Class I, Division 2
B Non-hazardous area or Zone 2; Class I, Division 2 or Zone 1; Class I, Division 1
1 Transmitter
2 Connecting cable: cable, separate, standard
3 Sensor connection housing with integrated ISEM
• Electronics in the transmitter housing, ISEM (intelligent sensor electronics module) in the sensor
connection housing
• Signal transmission: digital
Order code for "Integrated ISEM electronics", option A "Sensor"
Connecting cable
Connecting cables can be ordered in various lengths →  81.
• Length:
• Zone 2; Class I, Division 2: max. 300 m (1 000 ft)
• Zone 1; Class I, Division 1: max. 150 m (500 ft)
• Standard cable with common shield (pair-stranded)
• Not sensitive to external EMC interference.
Hazardous area
Use in: Zone 2; Class I, Division 2
Mixed installation is possible:
• Sensor: Zone 1; Class I, Division 1
• Transmitter: Zone 2; Class I, Division 2

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Device versions and materials
• Transmitter housing
• Aluminum, coated: aluminum, AlSi10Mg, coated
• Material: polycarbonate
• Material of window in transmitter housing
• Aluminum, coated: glass
• Material: polycarbonate
Configuration
• External operation via 4-line, backlit, graphic local display with touch control and guided menus
("Make-it-run" wizards) for application-specific commissioning.
• Via service interface or WLAN connection:
• Operating tools (e.g. FieldCare, DeviceCare)
• Web server (access via Web browser, e.g. Microsoft Internet Explorer, Microsoft Edge)
Sensor connection housing
Different versions of the connection housing are available.
Order code for "Sensor connection housing", option A, "Aluminum, coated":
Aluminum, AlSi10Mg, coated
Order code for "Sensor connection housing", option L, "Cast, stainless":
1.4409 (CF3M) similar to 316L
Sensor
t-mass I Insertion version:
• Sensor lengths: 235 mm (9 ")/335 mm (13 ")/435 mm (17 ")/
608 mm (24 ") for DN 80 to 1500 (3 to 60")
• Materials (in contact with medium):
• Insertion tube: stainless steel 1.4404 (316/316L)
• Sensing element:
Stainless steel 1.4404 (316/316L)
Alloy C22, 2.4602 as version for corrosive gases
• Exception: connecting part to transmitter (not in contact with
medium): 1.4301 (304)

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Equipment architecture
2
1
6
5
7
4
3
3
A0027512
 1 Possibilities for integrating measuring devices into a system
1 Control system (e.g. PLC)
2 Connecting cable (0/4 to 20 mA HART etc.)
3 Fieldbus
4 Coupler
5 Non-hazardous area
6 Hazardous area: Zone 2; Class I, Division 2
7 Hazardous area: Zone 1; Class I, Division 1
Dependability IT security
Our warranty is valid only if the device is installed and used as described in the Operating
Instructions. The device is equipped with security mechanisms to protect it against any inadvertent
changes to the settings.
IT security measures, which provide additional protection for the device and associated data transfer,
must be implemented by the operators themselves in line with their security standards.
Device-specific IT security
The device offers a range of specific functions to support protective measures on the operator's side.
These functions can be configured by the user and guarantee greater in-operation safety if used
correctly. An overview of the most important functions is provided in the following section.
Function/interface Factory setting Recommendation
Write protection via hardware write
protection switch →  10
Not enabled. On an individual basis following risk assessment.
Access code
(also applies for Web server login or
FieldCare connection) →  10
Not enabled
(0000).
Assign a customized access code during
commissioning.
WLAN
(order option in display module)
Enabled. On an individual basis following risk assessment.
WLAN security mode Enabled (WPA2-
PSK)
Do not change.
WLAN passphrase
(password) →  10
Serial number Assign an individual WLAN passphrase during
commissioning.
WLAN mode Access point On an individual basis following risk assessment.
Web server →  10 Enabled. On an individual basis following risk assessment.
CDI-RJ45 service interface →  10 – On an individual basis following risk assessment.

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Protecting access via hardware write protection
Write access to the device parameters via the local display, Web browser or operating tool (e.g.
FieldCare, DeviceCare) can be disabled via a write protection switch (DIP switch on the
motherboard). When hardware write protection is enabled, only read access to the parameters is
possible.
Hardware write protection is disabled when the device is delivered.
Protecting access via a password
Different passwords are available to protect write access to the device parameters or access to the
device via the WLAN interface.
• User-specific access code
Protect write access to the device parameters via the local display, Web browser or operating tool
(e.g. FieldCare, DeviceCare). Access authorization is clearly regulated through the use of a user-
specific access code.
• WLAN passphrase
The network key protects a connection between an operating unit (e.g. notebook or tablet) and the
device via the WLAN interface which can be ordered as an option.
• Infrastructure mode
When the device is operated in infrastructure mode, the WLAN passphrase corresponds to the
WLAN passphrase configured on the operator side.
User-specific access code
Write access to the device parameters via the local display, Web browser or operating tool (e.g.
FieldCare, DeviceCare) can be protected by the modifiable, user-specific access code.
WLAN passphrase: Operation as WLAN access point
A connection between an operating unit (e.g. notebook or tablet) and the device via the WLAN
interface, which can be ordered as an optional extra, is protected by the network key. The WLAN
authentication of the network key complies with the IEEE 802.11 standard.
When the device is delivered, the network key is pre-defined depending on the device. It can be
changed via the WLAN settings submenu in the WLAN passphrase parameter.
Infrastructure mode
A connection between the device and WLAN access point is protected by means of an SSID and
passphrase on the system side. Please contact the relevant system administrator for access.
General notes on the use of passwords
• The access code and network key supplied with the device should be changed during
commissioning.
• Follow the general rules for generating a secure password when defining and managing the access
code or network key.
• The user is responsible for the management and careful handling of the access code and network
key.
Access via Web server
The device can be operated and configured via a Web browser with the integrated Web server. The
connection is via the service interface (CDI-RJ45) or the WLAN interface.
The Web server is enabled when the device is delivered. The Web server can be disabled if necessary
(e.g. after commissioning) via the Web server functionality parameter.
The device and status information can be hidden on the login page. This prevents unauthorized
access to the information.
For detailed information on device parameters, see:
The "Description of Device Parameters" document
Access via service interface (CDI-RJ45)
The device can be connected to a network via the service interface (CDI-RJ45). Device-specific
functions guarantee the secure operation of the device in a network.

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The use of relevant industrial standards and guidelines that have been defined by national and
international safety committees, such as IEC/ISA62443 or the IEEE, is recommended. This includes
organizational security measures such as the assignment of access authorization as well as technical
measures such as network segmentation.

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Input
Measured variable Measured process variables
• Mass flow
• Temperature
Calculated process variables
• Corrected volume flow
• Volume flow
• FAD volume flow
• Flow velocity
• Calorific value
• 2nd temperature heat difference
• Heat flow
• Energy flow
• Density
Process variables available for order
Order code for "Sensor version":
• Option SB "Bidirectional" measures the flow in both directions (»positive« and »negative« flow) and
totalizes the flow in both directions. The device is calibrated in both directions.
• Option SC "Reverse flow detection" only measures the flow in the positive direction. The reverse
flow is detected by the device but is not totalized. The device is only calibrated in the positive
forward flow direction.
Order code for "Application package":
Option EV "Second gas group" enables the configuration of two different standard gases/gas mixtures
in the device and allows the user to switch from one gas group to another using the status input or
(if available) via bus communication.
Measuring range The available measuring range depends on the choice of gas and size of the pipe. Each measuring
device is calibrated individually with air under reference operating conditions. No recalibration is
required in the case of customer-specific gases, as the device's Gas Engine →  6 functionality
converts from air to these gases.
The measuring ranges calibrated for air are indicated in the following section. For information on
other gases and process conditions, contact your sales organization or use the Applicator selection
software.
SI units
• Order code for "Sensor version; sensor; insertion tube", option SA "Unidirectional; stainless steel;
stainless steel"
• Order code for "Sensor version; sensor; insertion tube", option HA "Unidirectional; Alloy; stainless
steel"
DN
[mm]
Full scale value [kg/h]
(Air, 20°C, 1.013 bar a)
Full scale value [Nm3/h]
(Air, 0°C, 1.013 bar a)
Minimum Maximum Minimum Maximum
80 21 2 086 16 1 613
100 33 3 260 25 2 521
150 73 7 335 57 5 672
200 130 13 040 101 10 084
250 204 20 375 158 15 757
300 293 29 340 227 22 689
400 522 52 160 403 40 337
500 815 81 500 630 63 026
600 1 174 117 360 908 90 758
700 1 597 159 740 1 235 123 531

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DN
[mm]
Full scale value [kg/h]
(Air, 20°C, 1.013 bar a)
Full scale value [Nm3/h]
(Air, 0°C, 1.013 bar a)
Minimum Maximum Minimum Maximum
1 000 3 260 326 000 2 521 252 105
1 500 7 335 733 501 5 672 567 236
• Order code for "Sensor version; sensor; insertion tube:", option SB "Bidirectional; stainless steel;
stainless steel"
• Order code for "Sensor version; sensor; insertion tube:", option SC "Reverse flow detection; stainless
steel; stainless steel"
DN
[mm]
Full scale value [kg/h]
(Air, 20°C, 1.013 bar a)
Full scale value [Nm3/h]
(Air, 0°C, 1.013 bar a)
Minimum Maximum Minimum Maximum
80 13 1 310 10 1 012
100 23 2 310 17 1 786
150 47 4 750 36 3 673
200 84 8 475 65 6 553
250 132 13 250 102 10 246
300 190 19 000 146 14 692
400 337 33 750 260 26 099
500 530 53 000 409 40 986
600 762 76 250 589 58 966
700 1 038 103 820 802 80 286
1 000 2 119 211 900 1 638 163 868
1 500 4 767 476 750 3 686 368 683
US units
• Order code for "Sensor version; sensor; insertion tube", option SA "Unidirectional; stainless steel;
stainless steel"
• Order code for "Sensor version; sensor; insertion tube", option HA "Unidirectional; Alloy; stainless
steel"
DN
[in]
Full scale value [lb/h]
(Air, 68°F, 14.7 psi a)
Full scale value [SCFM]
(Air, 59°F, 14.7 psi a)
Minimum Maximum Minimum Maximum
3 42 4 173 9 909
4 74 7 419 16 1 616
6 167 16 693 36 3 636
8 297 29 677 65 6 464
10 464 46 371 101 10 100
12 668 66 774 145 14 544
16 1 187 118 709 259 25 856
20 1 855 185 482 404 40 400
24 2 671 267 094 582 58 176
28 3 635 363 545 792 79 184
40 7 419 741 929 1 616 161 600
60 16 693 1 669 340 3 636 363 600

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• Order code for "Sensor version; sensor; insertion tube:", option SB "Bidirectional; stainless steel;
stainless steel"
• Order code for "Sensor version; sensor; insertion tube:", option SC "Reverse flow detection; stainless
steel; stainless steel"
DN
[in]
Full scale value [lb/h]
(Air, 68°F, 14.7 psi a)
Full scale value [SCFM]
(Air, 59°F, 14.7 psi a)
Minimum Maximum Minimum Maximum
3 29 2 981 6 648
4 52 5 257 11 1 144
6 108 10 810 23 2 354
8 192 19 287 42 4 200
10 301 30 155 65 6 567
12 432 43 241 94 9 417
16 768 76 810 167 16 729
20 1 206 120 620 262 26 272
24 1 735 173 533 377 37 797
28 2 362 236 279 514 51 463
40 4 822 482 253 1 050 105 039
60 10 850 1 085 012 2 363 236 326
The flow rates listed are only representative for the calibrated conditions and do not necessarily
reflect the measuring capacity of the measuring device under operating conditions and the actual
pipe internal diameters present on site. To make sure that the correct device version and sizing is
selected to suit the application, contact the sales organization or use the Applicator selection
software.
Special applications
High gas flow velocities (>70 m/s)
In the case of high gas flow velocities, it is advisable to read in the process pressure dynamically or to
enter the pressure as accurately as possible, as a velocity-dependent correction is performed.
Light gases (hydrogen, helium)
• The reliable measurement of light gases can be difficult due to their very high thermal
conductivity. Depending on the application, the flow rates of light gases are often particularly slow
and the flow profiles are not sufficiently developed. The flows are frequently in the laminar flow
range, while turbulent flow would actually be needed for optimum measurement.
• Despite loss of accuracy and linearity in applications with light gases and low flow rates, the device
measures with a good degree of repeatability and is therefore suitable for monitoring flow
conditions (e.g. leak detection).
• The recommended inlet runs must be doubled for light gases.→  40
Operable flow range • 200:1 with factory calibration
• Up to 1000:1 with application-specific adjustment
Input signal Output and input variants →  16
External values
The measuring device provides interfaces which allow values measured externally →  15 to be
transmitted to the measuring device:
• Analog inputs 4-20 mA
• Digital inputs
Pressure values can be transmitted as absolute or gauge pressure. For gauge pressure, the
atmospheric pressure must be known or specified by the customer.

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HART protocol
The measured values are written from the automation system to the measuring device via the HART
protocol. The pressure transmitter must support the following protocol-specific functions:
• HART protocol
• Burst mode
Current input
The measured values are written from the automation system to the measuring device via the
current input →  15.
Digital communication
The measured values can be written from the automation system to the measuring via:
Modbus RS485
Current input 0/4 to 20 mA
Current input 0/4 to 20 mA (active/passive)
Current span • 4 to 20 mA (active)
• 0/4 to 20 mA (passive)
Resolution 1 µA
Voltage drop Typically: 0.6 to 2 V for 3.6 to 22 mA (passive)
Maximum input voltage ≤ 30 V (passive)
Open-circuit voltage ≤ 28.8 V (active)
Possible input variables • Pressure
• Temperature
• Mol-% (gas analyzer)
• External reference flow rate (in-situ adjustment)
Status input
Maximum input values • DC –3 to 30 V
• If status input is active (ON): Ri >3 kΩ
Response time Configurable: 5 to 200 ms
Input signal level • Low signal: DC –3 to +5 V
• High signal: DC 12 to 30 V
Assignable functions • Off
• Reset the individual totalizers separately
• Reset all totalizers
• Flow override
• Second gas group
• Zero point adjustment

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Output
Output and input variants Depending on the option selected for output/input 1, different options are available for the other
outputs and inputs. Only one option can be selected for each output/input 1 to 4. The following
tables must be read vertically (↓).
Example: If the option BA "4–20 mA HART" was selected for output/input 1, one of the options A, B,
D, E, H, I or J is available for output 2 and one of the options A, B, D, E, H, I or J is available for output
3 and 4.
Output/input 1 and options for output/input 2
Options for output/input 3 and 4 →  17
Order code for "Output; input 1" (020) → Possible options
Current output 4 to 20 mA HART BA
Current output 4 to 20 mA HART Ex i passive ↓ CA
Current output 4 to 20 mA HART Ex i active ↓ CC
Modbus RS485 ↓ MA
Order code for "Output; input 2" (021) → ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓
Not assigned AAAAAAAAA A AAAAA
Current output 4 to 20 mA B B B B B B B B
Current output 4 to 20 mA Ex i passive C C C C C C
User-configurable input/output 1) D D D D D D D D
Pulse/frequency/switch output E E E E E E E E
Pulse/frequency/switch output Ex i passive G G G G G G
Relay output H H H H H H H H
Current input 0/4 to 20 mA I I I I I I I I
Status input J J J J J J J J
1) A specific input or output→  21 can be assigned to a user-configurable input/output.

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Output/input 1 and options for output/input 3 and 4
Options for output/input 2 →  16
Order code for "Output; input 1" (020) → Possible options
Current output 4 to 20 mA HART BA
Current output 4 to 20 mA HART Ex i passive ↓ CA
Current output 4 to 20 mA HART Ex i active ↓ CC
Modbus RS485 ↓ MA
Order code for "Output; input 3" (022), "Output; input 4" (023) → ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓
Not assigned AAAAAAAAA A AAAAA
Current output 4 to 20 mA B B B B B B B B
Current output 4 to 20 mA Ex i passive 1) C C
User-configurable input/output D D D D D D D D
Pulse/frequency/switch output E E E E E E E E
Pulse/frequency/switch output Ex i passive 2) G G
Relay output H H H H H H H H
Current input 0/4 to 20 mA I I I I I I I I
Status input J J J J J J J J
1) The current output 4 to 20 mA Ex i passive (C) option is not available for input/output 4.
2) The pulse/frequency/switch output Ex i passive (G) option is not available for input/output 4.

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Output signal Current output 4 to 20 mA HART
Order code "Output; input 1" (20):
Option BA: current output 4 to 20 mA HART
Signal mode Can be set to:
• Active
• Passive
Current range Can be set to:
• 4 to 20 mA NAMUR
• 4 to 20 mA US
• 4 to 20 mA
• 0 to 20 mA (only if the signal mode is active)
• Fixed current
Open-circuit voltage DC 28.8 V (active)
Maximum input voltage DC 30 V (passive)
Load 250 to 700 Ω
Resolution 0.38 µA
Damping Configurable: 0 to 999.9 s
Assignable measured
variables
• Mass flow
• Volume flow
• Corrected volume flow
• FAD volume flow
• Flow velocity
• Temperature
• Energy flow
• Pressure
• Density
• Heat flow
• Electronics temperature
• 2nd temperature heat difference
For SIL (application package), only mass flow
Current output 4 to 20 mA HART Ex i
Order code "Output; input 1" (20) choose from:
• Option CA: current output 4 to 20 mA HART Ex i passive
• Option CC: current output 4 to 20 mA HART Ex i active
Signal mode Depends on the selected order version.
Current range Can be set to:
• 4 to 20 mA NAMUR
• 4 to 20 mA US
• 4 to 20 mA
• 0 to 20 mA (only if the signal mode is active)
• Fixed current
Open-circuit voltage DC 21.8 V (active)
Maximum input voltage DC 30 V (passive)
Load • 250 to 400 Ω (active)
• 250 to 700 Ω (passive)
Resolution 0.38 µA

Proline t-mass I 500
Endress+Hauser 19
Damping Configurable: 0 to 999.9 s
Assignable measured
variables
• Mass flow
• Volume flow
• Corrected volume flow
• FAD volume flow
• Flow velocity
• Temperature
• Energy flow
• Pressure
• Density
• Heat flow
• Electronics temperature
• 2nd temperature heat difference
For SIL (application package), only mass flow
Modbus RS485
Physical interface RS485 in accordance with EIA/TIA-485 standard
Terminating resistor Integrated, can be activated via DIP switches
Current output 4 to 20 mA
Order code "Output; input 2" (21), "Output; input 3" (022) or "Output; input 4" (023):
Option B: current output 4 to 20 mA
Signal mode Can be set to:
• Active
• Passive
Current span Can be set to:
• 4 to 20 mA NAMUR
• 4 to 20 mA US
• 4 to 20 mA
• 0 to 20 mA (only if the signal mode is active)
• Fixed current
Maximum output values 22.5 mA
Open-circuit voltage DC 28.8 V (active)
Maximum input voltage DC 30 V (passive)
Load 0 to 700 Ω
Resolution 0.38 µA
Damping Configurable: 0 to 999.9 s
Assignable measured
variables
• Mass flow
• Volume flow
• Corrected volume flow
• FAD volume flow
• Flow velocity
• Temperature
• Energy flow
• Pressure
• Density
• Heat flow
• Electronics temperature
• 2nd temperature heat difference
For SIL (application package), only mass flow

Proline t-mass I 500
20 Endress+Hauser
Pulse/frequency/switch output
Function Can be set to pulse, frequency or switch output
Version Open collector
Can be set to:
• Active
• Passive
• Passive NAMUR
Maximum input values DC 30 V, 250 mA (passive)
Open-circuit voltage DC 28.8 V (active)
Voltage drop For 22.5 mA: ≤ DC 2 V
Pulse output
Maximum input values DC 30 V, 250 mA (passive)
Maximum output current 22.5 mA (active)
Open-circuit voltage DC 28.8 V (active)
Pulse width Configurable: 0.05 to 2 000 ms
Maximum pulse rate 10 000 Impulse/s
Pulse value Adjustable
Assignable measured
variables
• Mass flow
• Volume flow
• Corrected volume flow
• FAD volume flow
• Energy flow
• Heat flow
For SIL (application package), only mass flow
Frequency output
Maximum input values DC 30 V, 250 mA (passive)
Maximum output current 22.5 mA (active)
Open-circuit voltage DC 28.8 V (active)
Output frequency Adjustable: end value frequency 2 to 10 000 Hz (f max = 12 500 Hz)
Damping Configurable: 0 to 999.9 s
Pulse/pause ratio 1:1
Assignable measured
variables
• Mass flow
• Volume flow
• Corrected volume flow
• FAD volume flow
• Flow velocity
• Temperature
• Energy flow
• Pressure
• Density
• Heat flow
• Electronics temperature
• 2nd temperature heat difference
For SIL (application package), only mass flow
Switch output
Maximum input values DC 30 V, 250 mA (passive)
Open-circuit voltage DC 28.8 V (active)
Switching behavior Binary, conductive or non-conductive
Switching delay Configurable: 0 to 100 s