Smart 2HT transmitter Issue Feb 10 How can we help you? Technical Datasheets and IOM Instructions for all Delta Controls' pressure and temperature measurement products are available from our website at www.delta-controls.com. For Service and Repair enquiries, please contact the Sales Engineering Teams on +44 (0)20 8939 3500 or email sales@delta-controls.com. Delta Controls Limited Island Farm Avenue, West Molesey, Surrey KT8 2UZ, UK T +44 (0) 20 8939 3500 F +44 (0) 20 8783 1163 E sales@delta-controls.
CONTENTS Warranty Glossary Product Introduction ---------------------- 3 3-4 5 Sensor, Electronics Software & Local Display --------------- 5 5-6 General Mechanical Electrical ---------------------- 6 7 7-9 Blind Instrument Multi-Drop Trouble Shooting ---------------------- 9 -10 11 11 Features Installation Commissioning Specifications -------Functional, Performance Physical & Drawings Certified Products Options, Spares and Maintenance Re-Calibration Procedure Product code 002522-2HT 18021
WARRANTY This instrument is guaranteed against faulty workmanship and material for a period of one year from the date of delivery. The company undertakes to repair, free of charge, ex-works any instrument found to be defective within the specified period provided the instrument has been used within the specification in accordance with these instructions and has not been misused in any way.
LRL Lower Range Limit (pressure): The lowest measured value (pressure) that the transmitter can sense, governed by the sensor. LRV Lower Range Value (pressure): Normally the lowest measured value (pressure) that the analogue output (mA) of the transmitter can represent, but this may be reversed with URV (pressure) for reverse analogue outputs (mA). Master Name used to describe any system that is in control of the slave field devices, HART can support two masters, primary and secondary.
PRODUCT INTRODUCTION The Delta HT Series of SMART transmitters accurately measures gauge or absolute pressure and transmits a traditional 4-20 mA signal as well as a digital signal using the HART® protocol. The HART® protocol gives the ability to integrate into one system, products from different manufacturers with predictable functionality and control. HART® has become the most widely used digital communication system for process instruments and controllers.
THE DISPLAY / CONFIGURATOR (“D_CAL”) :- The Local display unit is constructed from a single stainless steel puck that when fitted gives the transmitter a protection rating of IP 54 with the cover removed. The unit continuously shows prime variable and units of measure in monitor mode. If current or percentage output is required, then this may be selected on the D-CAL.
MECHANICAL INSTALLATION Conduit connection The 2HT series Transmitters are supplied with either M20 x 1.5 or 1/2" NPT internally threaded electrical connection. To prevent condensation build-up in the conduit entering the instrument housing, the following piping layout should be followed. Additional considerations must be made if transmitters are to be mounted in hazardous areas.
Do not mix non-HART compatible signals within the same cable run. Cable should be run through a sealed metal gland rated IP66, to avoid moisture ingress in to the housing and provide a strong mechanical fixing. For EEx d applications the use of approved cable and glands is a mandatory requirement 7mm Recommended wiring practice +VE It is recommended that the field wiring be trimmed to length as follows.
Loop load The required loop voltage is based on the loop resistance. To determine the total resistance, add the resistance of all the units within the loop (except the transmitter). The required supply voltage can be determined by reference to the graph. Note that there must be a minimum of 250 ohms within the loop for digital communication to take place. RL 2 RL 1 Factors to be considered.
Re-ranging using the Zero and Span Buttons, Blind Instrument. The transmitter can have its LRV and URV set using the local keys mounted on the top circuit board. To set these values a pressure source should be used that has a calibrated accuracy three to five times better than the desired instrument accuracy, a loop current indicator is also required. Alternatively the instrument can use the process to generate the required pressures. 1 :2 :3 :4 :5 :6 :7 :8 :- Apply the LRV pressure to the instrument.
MULTI-DROP CONFIGURATION Multi-dropping transmitters refers to the practice of connecting several units to a single transmission line. The analogue signal is switched to 4 mA on all units and communication takes place digitally only. Each message is sent with a unique number that identifies the field device. The HART® system limits the number of instruments that can be connected in this way to 15. For Intrinsically Safe installations, maximum permissible circuit current reduces the limit to four.
FUNCTIONAL SPECIFICATIONS Service :Ranges :Sensor Limits:- Output :- Power Supply :Load Limits :- Hazardous Area Certifications :Zero Elevation & Suppression:Normal or Reverse action :Temperature Limits:- Failure Mode Alarms:Humidity Limits :Turn-on Time :Volumetric Displacement :Damping :- Liquid, Gas or Vapour 0 ~ 1 to 0 ~ 1000 Bar ( 0 ~ 16 to 0 ~ 16,000 psi ) 2 * URL Overpressure Stainless Steels except range GA, 0 to 1000 bar = 1.5 * URL 1.
PHYSICAL SPECIFICATIONS Electrical connections :- Female M20 x 1.5 or Female ½ " NPT Process Connection :- ½ " NPT External, G ½ " A to ISO 228 or High Pressure Cone and Thread ("Autoclave") Process Wetted Parts :- Below 10 Bar 316 St. St. inlet and Diaphragm 316 St. St. inlet with 17-4PH or 15-5PH Diaphragm as standard; Monel and Hastelloy available.
CERTIFIED PRODUCTS FLAMEPROOF EEx d :- Model R2HT Apparatus Certificate Number :- ITS03ATEX11187 Compliance with EN 50014:1997, EN 50018:2000 EExd IIC T4 (Tamb = -40 to +85°C) EExd IIC T6 (Tamb = -40 to +60°C) II 2 G. See Declaration of Conformity for ATEX.
002522-2HT 180210.
OPTIONS Mounting Stainless steel wall and pipe clamps are available as an optional way of mounting the unit. Display / Configurator The D-CAL configurator / display may be ordered with the transmitter or retrofit at a later date, without compromise to the certifications. This unit is not loop powered and can only be used with the Delta Controls HT range of SMART Transmitters.
PRODUCT CODE 1 2 3 4 5 6 7 8 9 10 Note that not all options are available on all models! 1 :- Enclosure 4 R A F = = = = EEx ia (Intrinsically Safe) EEx d Weatherproof Factory Mutual approved 2 :- Model, 2HT = Gauge and Absolute Pressure 3 :- Electrical Entry 1 2 = = M20 Internal ½" NPT Internal 4 :- Wetted Parts R S T U C D = = = = = = All 316 Stainless Steel 17-4PH or 15-5 PH Sensor, 316 Process connection All Monel All Hastelloy Hastelloy sensor, 316 Process connection 17-7 P
