TT 51 SERIES Handbook 2-wire transmitter for temperature, resistance or voltage measurement The documentation is only complete when used in combination with the relevant documentation for the sensor.
: IMPRINT :::::::::::::::::::::::::::::::::: All rights reserved. It is prohibited to reproduce this documentation, or any part thereof, without the prior written authorisation of KROHNE Messtechnik GmbH. Subject to change without notice. Copyright 2010 by KROHNE Messtechnik GmbH - Ludwig-Krohne-Str. 5 - 47058 Duisburg (Germany) 2 www.krohne.
CONTENTS TT 51 SERIES 1 Safety instructions 5 1.1 Intended use ..................................................................................................................... 5 1.2 Certifications .................................................................................................................... 5 1.2.1 EC directive compliance ......................................................................................................... 5 1.2.2 Ex approvals ..............................
CONTENTS TT 51 SERIES 5 Operation 25 5.1 HART® networks ............................................................................................................ 25 5.1.1 Point-to-point connection analog / digital mode ................................................................. 25 5.1.2 Multi-drop connection (2-wire connection).......................................................................... 26 5.2 Factory settings for configuration.....................................................
SAFETY INSTRUCTIONS 1 TT 51 SERIES 1.1 Intended use TT 51 C The TT 51 C is an intelligent, universal HART®-compatible 2-wire in-head transmitter for temperature, resistance or voltage measurements in an industrial environment. The TT 51 C is optionally available in a non-incendive version for use in potentially explosive atmosphere zone 2 and in an intrinsically safe version for use in zone 0, 1 and 2. These devices are labelled with the "Ex" symbol.
1 SAFETY INSTRUCTIONS TT 51 SERIES 1.2.2 Ex approvals TT 51 C (intrinsically safe) ATEX: ITS10ATEX26950X II 1G; Ex ia IIC T4...T6 TT 51 C (non-incendive) ATEX: ITS10 ATEX26948X II 3G; Ex nL IIC T4...T6 TT 51 R (intrinsically safe) ATEX: ITS10ATEX26951X II 2(1)G; Ex ia IIC T4...T6 TT 51 R (non-incendive) ATEX: ITS10ATEX26949X II 3G; Ex nL IIC T4...T6 1.2.3 SIL certification • Compliance: functional safety acc.
SAFETY INSTRUCTIONS 1 TT 51 SERIES 1.3 Safety instructions from the manufacturer 1.3.1 Copyright and data protection The contents of this document have been created with great care. Nevertheless, we provide no guarantee that the contents are correct, complete or up-to-date. The contents and works in this document are subject to copyright. Contributions from third parties are identified as such.
1 SAFETY INSTRUCTIONS TT 51 SERIES 1.3.3 Product liability and warranty The operator shall bear responsibility for the suitability of the device for the specific purpose. The manufacturer accepts no liability for the consequences of misuse by the operator. Improper installation and operation of the devices (systems) will cause the warranty to be void. The respective "Standard Terms and Conditions" which form the basis for the sales contract shall also apply. 1.3.
SAFETY INSTRUCTIONS 1 TT 51 SERIES 1.3.5 Warnings and symbols used Safety warnings are indicated by the following symbols. DANGER! This information refers to the immediate danger when working with electricity. DANGER! This warning refers to the immediate danger of burns caused by heat or hot surfaces. DANGER! This warning refers to the immediate danger when using this device in a hazardous atmosphere. DANGER! These warnings must be observed without fail.
2 DEVICE DESCRIPTION TT 51 SERIES 2.1 General description The TT 51 transmitters are intelligent 2-wire universal transmitters for measurement with up to two user programmable channels in single, differential, average, minimum or maximum mode.
DEVICE DESCRIPTION 2 TT 51 SERIES 2.2 Nameplate INFORMATION! Look at the device nameplate to ensure that the device is delivered according to your order. Check for the correct supply voltage printed on the nameplate. The transmitter can be identified by the information on the nameplates. 2.2.
2 DEVICE DESCRIPTION TT 51 SERIES 2.2.2 Nameplate for rail-mount transmitter Figure 2-3: Example for nameplate 1 2 3 4 5 6 7 12 Product name Part number, serial number and batch number Manufacturer and address Printable field, sensor configuration Technical data Electrical data for output CE marking (EC conformity), electronic/electric device waste marking and SIL2 marking www.krohne.
INSTALLATION 3 TT 51 SERIES 3.1 Notes on installation INFORMATION! Inspect the cartons carefully for damage or signs of rough handling. Report damage to the carrier and to the local office of the manufacturer. INFORMATION! Check the packing list to check if you received completely all that you ordered. INFORMATION! Look at the device nameplate to ensure that the device is delivered according to your order. Check for the correct supply voltage printed on the nameplate. 3.
3 INSTALLATION TT 51 SERIES INFORMATION! The TT 51 C transmitter has been developed for an ambient temperature of -40...+85°C / -40...+185°F. Please also note that the ambient temperature is also dependent on the temperature category. For detailed information refer to Ex data of the ambient temperature. The process temperature is also transferred to the transmitter housing via the protective tube.
TT 51 SERIES ELECTRICAL CONNECTIONS 4 4.1 Safety instructions DANGER! All work on the electrical connections may only be carried out with the power disconnected. Take note of the voltage data on the nameplate! DANGER! Observe the national regulations for electrical installations! DANGER! The transmitter is protected against polarity reversal. No damage will occur to the device if the polarity of the supply voltage is switched. The output will then indicate 0 mA.
4 ELECTRICAL CONNECTIONS TT 51 SERIES RTD and potentiometer measurement Pt100…Pt1000, Pt100 Pt1000, Ni100, Ni120, Cu10 2-wire connection Pt100…Pt1000, Pt100 Pt1000, Ni100, Ni120, Cu10 3-wire connection Pt100…Pt1000, Pt100 Pt1000, Ni100, Ni120, Cu10 4-wire connection RTD, redundant sensor elements 2 x 3-wire connection RTD, redundant sensor elements 2 x 2-wire connection Resistance, 2-wire connection Resistance, 3-wire connection Resistance, 4-wire connection Potentiometer, 3-wire connection 1 Sma
ELECTRICAL CONNECTIONS 4 TT 51 SERIES 4.3 Connection diagram of in-head transmitter (non-incendive) DANGER! To enable HART® communication, the output circuit must have an output load of at least 250 Ω.
4 ELECTRICAL CONNECTIONS TT 51 SERIES 4.4 Connection diagram of in-head transmitter (intrinsically safe) Figure 4-2: Connection diagram 1 2 3 4 5 6 7 8 9 Input Potentially explosive area Safe area Modem, Ex-approved Modem RLoad, R ≥ 250 Ω Zener barrier or voltage supply 10…30 VDC (intrinsically safe) Output See chapter "cable length" INFORMATION! The HART® modem is connected parallel to the output load or parallel to the output of the transmitter.
ELECTRICAL CONNECTIONS 4 TT 51 SERIES 4.
4 ELECTRICAL CONNECTIONS TT 51 SERIES Resistance measurement Resistance, 2-wire connection Ch 1 Resistance, 3-wire connection Ch 1 Resistance, 4-wire connection Ch 1 Dual resistance, 2-wire connection on Ch 1 and Ch 2 Dual resistance, 3-wire connection on Ch 1 and Ch 2 Dual resistance, 4-wire connection on Ch 1 and Ch 2 1 SmartSense wire 2 GND (input cable screens) Potentiometer and combined thermocouple and RTD measurement Potentiometer, 3-wire connection Thermocouple and redundant 4-wire RTD ele
ELECTRICAL CONNECTIONS 4 TT 51 SERIES Thermocouple and voltage measurement Thermocouple Thermocouple, redundant sensor elements Voltage Voltage, redundant sensor elements 1 SmartSense wire 2 GND (input cable screens) 09/2010 - 4000754201 - MA TT 51 R01 en www.krohne.
4 ELECTRICAL CONNECTIONS TT 51 SERIES 4.
ELECTRICAL CONNECTIONS 4 TT 51 SERIES 4.7 Connection diagram of rail-mount transmitter (intrinsically safe) Figure 4-4: Connection diagram 1 2 3 4 5 6 7 Input (intrinsically safe) Classified hazardous area (potentially explosive area e.g. zone 0, 1 or 2) Classified hazardous area (potentially explosive area e.g. zone 1 or 2) Safe area Modem / Ex (intrinsically safe) RLoad (intrinsically safe) Voltage supply 10…30 VDC (intrinsically safe - terminals 21, 22) 4.
4 ELECTRICAL CONNECTIONS TT 51 SERIES Insulation Capacitance [pF/m] PVC 300...400 Polyethylene 150...200 Polyethylene foam 75...100 Conductors Resistance [Ω/km] (both conductors in series) Area [mm2] Diameter [mm] AWG 2.0 1.6 14 17 1.3 1.3 16 28 1.0 1.15 17 36 0.8 1.0 18 45 0.5 0.8 20 70 0.3 0.6 22 110 0.2 0.
OPERATION 5 TT 51 SERIES 5.1 HART® networks CAUTION! In order to ensure reliable HART® communication with this transmitter, the loop resistance must be at least 250 Ω! 5.1.1 Point-to-point connection analog / digital mode Point-to-point connection between the transmitter and the HART® master. The current output of the device may be active or passive.
5 OPERATION TT 51 SERIES 5.1.2 Multi-drop connection (2-wire connection) As a multipoint connection (Multidrop) with up to 64 devices in parallel (this transmitter or other HART®devices). The current outputs of the devices must be passive! Burst mode is not supported. 1 Primary master 2 HART® modem 3 HART® signal 4 Other HART® devices or this transmitter (refer also to 7) 5 Terminal 7 6 Terminal 6 7 Device with address > 0 and passive current output, connection of max.
OPERATION 5 TT 51 SERIES 5.2 Factory settings for configuration DANGER! Only an Ex approved HART® modem located in safe area may be connected to a transmitter placed in potentially explosive area. The transmitters are delivered with either a factory settings or configured according to customers' specifications. Menu Designation Parameter Factory settings Type of sensor 1 RTD Pt100 α=0.
5 OPERATION TT 51 SERIES 5.3 Configuration of transmitter The transmitters can be configured by means of: 1. The PC based configuration software ConSoft version 1.2.0.0 or higher and a USB interface version 1.2.03 or higher, via a USB port on the PC (for more information see the user instructions for ConSoft and USB Interface) 2. A hand held communicator (secondary master) such as the field communicators FC 375/FC475 (Emerson) 3.
OPERATION 5 TT 51 SERIES Proper connection of the transmitters with a PC requires our USB interface which is included in the ICON configuration kit. For connection of the transmitters refer to the following connection diagrams during configuration. DANGER! Make sure the area is safe before connecting the USB interface ICON to the transmitter.
5 OPERATION TT 51 SERIES Figure 5-2: Connection during configuration of rail-mount transmitter a = PC configuration kit; b = PC software ConSoft Input (intrinsically safe) Voltage supply (intrinsically safe terminals 21, 22) RLoad (intrinsically safe) Communication with USB interface and a PC software ConSoft Connection to USB interface and a PC software ConSoft is not permitted if Ex version is placed in the classified hazardous area (potentially explosive area) 6 Connection to the voltage supply during
OPERATION 5 TT 51 SERIES 5.3.2 Configuration with a hand held communicator FC375/FC475 The Field communicators FC375/FC475 are hand held communicators from Emerson Process Management for configuring HART® and Foundation Fieldbus devices. To be able to configure the transmitter with the FC375/FC475 you need a Device Description (DD) file.
5 OPERATION TT 51 SERIES Process Device Manager (PDM) The Simatic PDM is a PC application from Siemens for configuring HART® and PROFIBUS devices. For adaptation to different devices Simatic PDM uses Device Descriptions (DD). The transmitter DD has to be installed on the PDM System and a so called "Device Install HART PDM" is needed (available as download on the internet). For installing the DD on PDM refer to the "PDM Manual" section 13:"Integrating Devices".Please read also the "readme.
OPERATION 5 TT 51 SERIES 5.5 Diagnostic information according to NAMUR NE 107 Diagnostic information about the connected sensor/sensors is available in the configuration software ConSoft.
5 OPERATION TT 51 SERIES Messages in AMS, PDM and FC375 device diagnostic Actions Device specific Failure Error message Error correction Transmitter F Sensor break channel 1 Sensor wire broken. Check the sensor and sensor connection on the channel 1. If error remains replace the sensor connected to channel 1. Transmitter F Sensor break channel 2 Sensor wire broken. Check the sensor and sensor connection on the channel 2. If error remains replace the sensor connected to channel 2.
OPERATION 5 TT 51 SERIES 5.6 Factory calibration of transmitter The transmitters are delivered with a factory configuration Pt100 (α=0.00385), 4-wire connection 0...+100°C / +32...+212°F or configured according to customer's requirements. For detailed information refer to Factory settings for configuration on page 27. Due to the long-term drift of max. ±0.01°C or ±0.01% of span per year, a re-calibration of the transmitter is normally not needed.
6 SERVICE TT 51 SERIES 6.1 Spare parts availability The manufacturer adheres to the basic principle that functionally adequate spare parts for each device or each important accessory part will be kept available for a period of 3 years after delivery of the last production run for the device. This regulation only applies to spare parts which are under normal operating conditions subjects to wear and tear. 6.
SERVICE 6 TT 51 SERIES 6.3.2 Form (for copying) to accompany a returned device Company: Address: Department: Name: Tel. no.: Fax no.: Manufacturer's order no. or serial no.: The device has been operated with the following medium: This medium is: water-hazardous toxic caustic flammable We checked that all cavities in the device are free from such substances. We have flushed out and neutralized all cavities in the device.
7 TECHNICAL DATA TT 51 SERIES 7.1 Measuring principle 7.1.1 Resistance thermometer The measuring insert with a resistance thermometer features a temperature-sensitive sensor made from a platinum RTD, whose value at 0°C / +32°F is 100 Ω. That is where the name "Pt100" comes from. It is generally valid that the electric resistance of metals increases according to a mathematical function as the temperature rises. This effect is taken advantage of by resistance thermometers to measure temperature.
TECHNICAL DATA 7 TT 51 SERIES 7.1.2 Thermocouples The thermocouple features two electric conductors made from different metals, connected at one end. Each free end is connected to a compensation cable which is then connected to a millivolt meter. This circuitry forms a "thermal circuit".
7 TECHNICAL DATA TT 51 SERIES 7.2 Technical data INFORMATION! • The following data is provided for general applications. If you require data that is more relevant to your specific application, please contact us or your local representative. • Additional information (certificates, special tools, software,...) and complete product documentation can be downloaded free of charge from the website (Download Center).
TECHNICAL DATA 7 TT 51 SERIES Measuring accuracy Accuracy RTD and thermocouple: for detailed information refer to RTD and T/C accuracy table on page 49. Resistance digital accuracy: 0...1000 Ω: max. of ±20 mΩ or ±0.02% of measured value 1000...4000 Ω: ±0.025% of measured value; max. 0.5 Ω Resistance analogue accuracy: ±0.03% of span Voltage digital accuracy: ±5 µV or ±0.01% of measured value Voltage analogue accuracy: ±0.
7 TECHNICAL DATA TT 51 SERIES Installation conditions Mounting In-head transmitter: DIN B-head or larger, DIN-rail (with adapter) Rail-mount transmitter: rail acc. to DIN 50022 / EN 60715, 35 mm / 1.38" For detailed information refer to chapter "Installation". Weight In-head transmitter: 50 g / 0.11 lb Rail-mount transmitter: 70 g / 0.15 lb Dimensions For detailed information refer to Dimensions on page 45. Materials Housing PC/ABS Flammability acc.
TECHNICAL DATA 7 TT 51 SERIES Input - thermocouples T/C type B - Pt30Rh-Pt6Rh (IEC 60584) +400...+1800°C / +752...+3272°F T/C type C - W5Re-W26Re (ASTM E 988) 0...+2315°C / +32...+4199°F T/C type D - W3Re-W25Re (ASTM E 988) T/C type E - NiCr-CuNi (IEC 60584) -200...+1000°C / -328...+1832°F T/C type J - Fe-CuNi (IEC 60584) T/C type K - NiCr-NiAl (IEC 60584) -200...+1350°C / -328...+2462°F T/C type N - NiCrSi-NiSiMg (IEC 60584) -100...+1300°C / -148...
7 TECHNICAL DATA TT 51 SERIES Output Output signal 4...20 mA, 20...4 mA or customized Temperature linear for RTD & T/C HART® protocol HART® 6 HART® physical layer FSK 1200 Representation T1 or T2 or difference, average, min. or max. of T1 and T2 Update time Single input: ≈300 ms; Double input: ≈600 ms Adjustable output filtering 0...60 s (time constant) Permissible load 635 Ω at 24 VDC incl. 250 Ω loop resistance NAMUR compliance Current limitations and failure currents acc.
TECHNICAL DATA 7 TT 51 SERIES 7.3 Dimensions In-head transmitter Dimensions [mm] [inches] a 33.0 1.30 b 7.0 0.28 c 44.5 1.75 d 23.0 0.91 Rail-mount transmitter Dimensions [mm] [inches] a 17.5 0.69 b 81.3 3.20 c 90.0 3.54 d 35 1.38 09/2010 - 4000754201 - MA TT 51 R01 en www.krohne.
7 TECHNICAL DATA TT 51 SERIES 7.
TECHNICAL DATA 7 TT 51 SERIES 7.5 Output load diagram Formula for the maximum permissible output load: permissible RLoad [Ω] = (U-10)/0.022 Non-incendive transmitter Figure 7-3: Output load diagram X: Power supply U [VDC] Y: Total output load R [Ω] Intrinsically safe transmitter Figure 7-4: Output load diagram X: Power supply U [VDC] Y: Total output load R [Ω] 09/2010 - 4000754201 - MA TT 51 R01 en www.krohne.
7 TECHNICAL DATA TT 51 SERIES 7.6 Electrical data for outputs and inputs Non-incendive transmitter Output terminals 6, 7 Input terminals 1, 2, 3, 4, 5 ≤ 36 VDC Ui = Vmax U0 = U0C ≤ 3.3 VDC Ii = Imax - I0 = ISC ≤ 1.8 mA Pi = Pmax - P0 ≤ 1.5 mW Li 10 μH L0 500 mH Ci 12.1 nF C0 500 μF Intrinsically safe transmitter Output terminals 6, 7 48 Input terminals 1, 2, 3, 4, 5 Ui = Vmax ≤ 30 VDC U0 = U0C ≤ 6.6 VDC Ii = Imax ≤ 100 mA I0 = ISC ≤ 26.
TECHNICAL DATA 7 TT 51 SERIES 7.7 RTD and T/C accuracy table Conformance level 95% (2σ) CJC = Cold Junction Compensation Accuracies in °C Input type Temp. range Min. span Accuracy Temp. influence (Dev. from ref. temp. 20°C) [°C] [°C] [°C] RTD Pt100 -200...+850 10 ±0.10°C or ±0.05% of span ±0.005% of span per °C RTD PtX 1 Corresp. to max. 4 kΩ 10 ±0.10°C or ±0.05% of span ±0.005% of span per °C RTD Ni100 -60...+250 10 ±0.10°C or ±0.05% of span ±0.005% of span per °C RTD Ni120 -60..
7 TECHNICAL DATA TT 51 SERIES Accuracies in °F Input type Temp. range Min. span Accuracy Temp. influence (Dev. from ref. temp. 68°F) [°F] [°F] [°F] RTD Pt100 -328...+1562 50 ±0.18°F or ±0.05% of span ±0.005% of span per °F RTD PtX 1 Corresp. to max. 4 kΩ 50 ±0.18°F or ±0.05% of span ±0.005% of span per °F RTD Ni100 -76...+482 50 ±0.18°F or ±0.05% of span ±0.005% of span per °F RTD Ni120 -76...+482 50 ±0.18°F or ±0.05% of span ±0.005% of span per °F RTD Ni1000 -58...
NOTES 8 TT 51 SERIES 09/2010 - 4000754201 - MA TT 51 R01 en www.krohne.
© KROHNE 09/2010 - 4000754201 - MA TT 51 R01 en - Subject to change without notice. KROHNE product overview • • • • • • • • • • • • Electromagnetic flowmeters Variable area flowmeters Ultrasonic flowmeters Mass flowmeters Vortex flowmeters Flow controllers Level meters Temperature meters Pressure meters Analysis products Measuring systems for the oil and gas industry Measuring systems for sea-going tankers Head Office KROHNE Messtechnik GmbH Ludwig-Krohne-Str. 5 D-47058 Duisburg (Germany) Tel.
