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Description
The patented sensor design of t-mass I provides unprecedented measurement stability in thermal insertion mass flow measurement. It compensates in real time for changes of process conditions: temperature, pressure, flow direction and gas type. Its compact transmitter offers high flexibility in terms of operation and system integration: access from one side, remote display and improved connectivity options. Heartbeat Technology enables measurement reliability and compliant verification.
Measuring principle is characterized by a high operable flow range and direct mass flow measurement
Measurement of utility and process gases and 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
Compact dual-compartment housing with up to 3 I/Os
Backlit display with touch control and WLAN access
Remote display available
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
Specifications
Specifications
Brand
Certifications & Approvals
CSA Hydrogen Compatibility %
Hydrogen Compatible up to 100% 
Hydrogen Compatible up to 30% 
Hydrogen Compatible up to 20% Sensor Features
- 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
- Insertion version for DN 80 to 1500 (3 to 60")
- Bidirectional measurement; high measuring performance. Patented drift-free sensor with SIL 2
Transmitter features
- 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
- Compact dual-compartment housing with up to 3 I/Os
- Backlit display with touch control and WLAN access
- Remote display available
Nominal diameter range
- DN 80 to 1500 (3 to 60")
Wetted materials
- Materials for insertion tube Stainless steel, 1.4404 (316/316L)
- Process connections, process coupling
- Stainless steel, 1.4404 (316/316L)
- Sensing element Unidirectional
- Stainless steel, 1.4404 (316/316L) Alloy C22, 2.4602 (UNS N06022)
- Bidirectional Stainless steel, 1.4404 (316/316L)
- Reverse flow detection Stainless steel, 1.4404 (316/316L)
- Clamping rings PEEK PVDF 1.4404 (316/316L) Flat ring seal EPDM FKM
Measured variables
- Massflow
- temperature
- standard volume flow
- volume flow
- Free air delivery
- velocity
- heat flow
- energy flow
- density
Max. measurement error
- Gas: 1.0% o.r. (10 to 100% o.f.s.), 0.1% o.f.s. (1 to 10% o.f.s.)
Measuring range
- 20 to 733501 kg/h (44 to 1669340 lb/h)
Max. process pressure
- -0.5 to 20 bar_g (-7.25 to 290 psi_g)
Medium temperature range
- -40 °C to +180°C (-40 °F to +356°F)
Ambient temperature range
- -40 to 60°C (-40 to 140°F)
- Optional: Transmitter: -50 to 60°C (-50 to 140°F)
- Sensor: -60 to 60°C (-60 to 140°F)
Transmitter housing material
- Aluminium, AlSi10Mg, coated Polycarbonate
Degree of protection
- IP66/67, Type 4X enclosure
Display/Operation
- 4-line backlit display with touch control (operation from outside) Configuration via local display and operating tools possible Remote display available
Outputs
- 3 outputs: 4-20 mA HART (active/passive) 4-20 mA (active/passive) Pulse/frequency/switch output (active/passive) Relay output
Inputs
- Status input 4-20 mA input
Digital communication
- HART, Modbus RS485
Power supply
- DC 24V AC 100 to 240V
Hazardous area approvals
- ATEX, cCSAus, IECEx, NEPSI, JPN, UK Ex, EAC, KC
Product safety
- CE, C-tick
Functional safety
- Functional safety according to IEC 61508, applicable in safety-relevant applications in accordance with IEC 61511
Metrological approvals and certificates
- Calibration performed on accredited calibration facilities (acc. to ISO/IEC 17025)
- Heartbeat Technology complies with the requirements for measurement traceability according to ISO 9001:2015 – Section 7.1.5.2 a
Pressure approvals and certificates
- CRN
Material certificates
- 3.1 material NACE MR0175/MR0103
