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TABLE OF CONTENTS

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Quick Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Software Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Agency Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Model Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Replacement parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

DESCRIPTION

The Thermatel Mass Flow Transmitter Model TA1 provides
high performance measurement of the mass flow of air and
other gases. Using a heated sensor, the mass flow is deter-
mined by accurately measuring the temperature difference
between the heated sensor and the reference sensor. Heat
transfer is due to the mass of the gas flowing past the sen-
sor providing a measurement of the mass flow rate.
Thermatel
Mass Flow Transmitter
®
Model TA1
Instruction Manual and Parts List
The advanced microprocessor provides accurate tempera-
ture compensation as the process temperature changes.
Each instrument is factory calibrated in a NIST flow standard
to provide highest level of accuracy. The electronics permit
the user to configure the instrument for the pipe or duct size,
zero and span, units of measurement, alarms, and other user
specific requirements.
The instrument provides two 4-20 mA output signals; one for
flow measurement, and one for temperature. Each 4-20 sig-
nal can be configured from the instrument.

PRINCIPLE OF OPERATION

The flow element of the TA1 Mass Flow Transmitter
utilizes a heater and two resistant temperature detectors
(RTDs). The heater and the active RTD are contained in one
sensor; the second sensor contains the reference RTD and a
mass balancing element.
The reference RTD measures the temperature of the process
where the flow element is installed. A constant power is pro-
vided to the heated sensor. The active RTD measures the
temperature of the heated sensor. The electronics measures
the temperature difference between the active and reference
RTD.
PAGE
There is an inherent non-linear relationship between the tem-
perature difference and the mass flow rate. The micro-
processor-based electronics convert the temperature differ-
ence signal to provide a linear measurement of the mass flow
rate. The electronics also provide advanced temperature
compensation which automatically adjusts the flow meas-
urements for changes in process temperature.
The 4-20 mA output signal can be adjusted to provide max-
imum resolution of flow measurement over the desired range
of the instrument. A separate 4-20 mA signal provides an
output signal of the process temperature. Both 4-20 mA sig-
nals can be wired for either active or passive operation. Refer
to wiring section, pages 4 and 5.
Optional relays provide low or high flow alarm indication and
can be used for diagnostics.

UNPACKING

Unpack the instrument carefully, making sure all components
have been removed from the packing material. Inspect all
components for damage, and report any concealed damage
to the carrier within 24 hours. Check the contents of the car-
ton, making sure it agrees with the packing slip and the pur-
chase order. Verify that the model number imprinted on the
nameplate matches the number on the packing slip and the
purchase order. Report any discrepancies to the factory.
Check and record the serial number for future reference
when ordering parts.
®

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Summary of Contents for STI Magnetrol Thermatel TA1

  • Page 1: Table Of Contents

    Thermatel ® Mass Flow Transmitter ® Model TA1 Instruction Manual and Parts List The advanced microprocessor provides accurate tempera- ture compensation as the process temperature changes. Each instrument is factory calibrated in a NIST flow standard to provide highest level of accuracy. The electronics permit the user to configure the instrument for the pipe or duct size, zero and span, units of measurement, alarms, and other user specific requirements.
  • Page 2: Quick Start

    It is preferred to have as much straight run as pos- relay connections as show below. Make connections sible. Refer to Magnetrol bulletin 54-131 (STI bulletin 95-165) between the probe and the electronics to terminal block for additional information on probe location. It is generally TB11.
  • Page 3: Installation

    NOTE: If equipment is used in a manner not specified by installing any type of flow element should be followed. Refer manufacturer, protection provided by equipment may be to Magnetrol bulletin 54-131 (STI bulletin 95-165) for addi- impaired. tional information on probe location.
  • Page 4: Electrostatic Discharge Handling Procedure

    ELECTROSTATIC DISCHARGE (ESD) HANDLING PROCEDURE Magnetrol’s electronic instruments are manufactured to the 2. Use a grounding wrist strap when installing and remov- highest quality standards. These instruments utilize electron- ing circuit boards. A grounded workstation is also rec- ic components which may be damaged by static electricity ommended.
  • Page 5 WIRING cont. RELAY OUTPUT WIRING CLOSING THE COVER The instrument can be supplied with up to four isolated After all wiring connections are complete, close and secure SPDT relays, rated at 10 amp at 120 VAC or 5 amp at the cover using the six screws.
  • Page 6: Software Configuration

    SOFTWARE CONFIGURATION The electronics of the instrument are easy to set up and con- OPERATOR KEYPAD figure for the user’s specific requirements. If previously All unit configuration instructions in this manual will appear specified, the configuration menu is loaded into the instru- on the instrument display.
  • Page 7 SOFTWARE CONFIGURATION cont. DEFINITIONS TAG LINE The following symbols and definitions are used in the soft- Initially the tag line on the display reads “Magnetrol Int’l”. ware configuration: This can be changed from the advanced configuration sec- tion of the software. Calibration factor: Changes in flow profile will affect the measurements of the TA1.
  • Page 8 SOFTWARE CONFIGURATION cont. GENERAL PROGRAMMING MENU Following is the general menu structure used in the Mass Flow Transmitter. Use the UP or DOWN arrow key ( ) to scroll through any portion of the menu, press ENT key to make a selection, and press DEL to backup. QUICK START Enter password Area (enter area in...
  • Page 9 SOFTWARE CONFIGURATION cont. GENERAL PROGRAMMING MENU cont. RUN MODE SYSTEM CONFIG Flow units SCFM SCFS NCM/hour NCM/minute NL/hour Mass units Pounds/hour Pounds/minute Kilograms/hour Kilograms/minute Velocity units Standard feet/minute Normal meters/minute Temperature units Fahrenheit Rankine Celsius Kelvin Diameter units Inches Feet Meters Millimeters Area units...
  • Page 10 SOFTWARE CONFIGURATION cont. GENERAL PROGRAMMING MENU cont. 4–20 mA (flow) Enable/disable setting Controlled by Velocity Flow Mass 4 mA point 20 mA point Fault mode 22 mA 3.5 mA Hold Previous menu 4–20 mA (tempera- Enable/disable ture) setting 4 mA point 20 mA point Fault mode 22 mA...
  • Page 11 SOFTWARE CONFIGURATION cont. GENERAL PROGRAMMING MENU cont. RUN MODE ADVANCED CONFIG Damping (1–60) STP conditions Temperature Enter value Pressure 1 atmosphere 1 bar Previous menu Change password Enter old password Enter new password Re-enter new password Previous menu Probe Type TXR Probe TXT Probe Flow Body...
  • Page 12 SOFTWARE CONFIGURATION cont. GENERAL PROGRAMMING MENU cont. DIAGNOSTICS MENU Test relays Select relay 1–4 Energize De-energize Test 4–20 loop 1 Enter loop value 4–20 Test 4–20 loop 2 Enter loop value 4–20 Sensor signal View version Previous menu MAIN MENU The main menu is used to access the various subroutines.
  • Page 13 SOFTWARE CONFIGURATION cont. QUICK START Quick Start Action if ENT Action if ENT Display Option Option is Pressed is Pressed Enter password Enter password Proceed with Quick Start Area Press ENT to change area or Area Enter area of pipe or duct in xxx in ^2 to continue to next selection.
  • Page 14 SOFTWARE CONFIGURATION cont. MEASURED VALUES The measured values menu is used to display current measured values and to determine which units will be shown on the display during run mode. Access the Measured Values menu by pressing from the run menu; press ENT. The display then cycles through the various values and permits these values to be displayed during run mode.
  • Page 15 SOFTWARE CONFIGURATION cont. SYSTEM CONFIGURATION MENU The System Configuration menu is used to select the display units and enter specific information for the application. Enter this section by pushing ENT when System Config is displayed. To calculate the flow or mass, it is necessary to accurately enter the area of the pipe or duct. If the pipe or duct is circular, simply enter the value of the diameter;...
  • Page 16 SOFTWARE CONFIGURATION cont. I/O CONFIGURATION MENU cont. Relay Settings This subroutine is accessible from the I/O Configuration menu by pressing ENT when the following is displayed: Relay settings to select Relay 1 can be configured as a fault relay. If the instrument’s diagnostics detect any failure, or the instrument does not pass self-test, the fault relay will de-energize.
  • Page 17 SOFTWARE CONFIGURATION cont. I/O CONFIGURATION MENU cont. Relay Settings cont. Relay Settings Display Option Action if ENT is Pressed Comments Select Relay Select Relay to configure; Selects the relay (#1–4) to then press ENT. configure. Fault Relay (#1) Press ENT to change Press to cycle through enable Relay 1 can be configured as a...
  • Page 18 SOFTWARE CONFIGURATION cont. I/O CONFIGURATION MENU cont. Totalizer The totalizer in the TA1 maintains a continuous, running total of the flow in selectable units. The totalizer utilizes eeprom mem- ory, eliminating the need for a battery backup. The totalizer can be reset to zero via the software configuration menu or by the Modbus communication.
  • Page 19 SOFTWARE CONFIGURATION cont. ADVANCED CONFIGURATION MENU The Advanced configuration menu sets advanced parameters not normally used in the operation of the instrument. Access the Advanced Configuration Menu from the Run mode by pushing either the arrow until the display shows: Adv config to select Advanced Configuration Menu...
  • Page 20 SOFTWARE CONFIGURATION cont. DIAGNOSTICS MENU The Diagnostics menu provides a method of testing the instrument’s functionality. It also has useful information for troubleshooting. Access to Diagnostics menu is obtained from the Run mode by pushing either the arrows until the display shows: Diagnostics to select...
  • Page 21: Digital Communication Rs-485/Modbus Protocol

    DIGITAL COMMUNICATION RS-485/MODBUS PROTOCOL (cont.) CONFIGURATION WIRING The Modbus port on the Magnetrol device must be config- Standard Belden 8451 shielded, twisted pair, 22-gauge ured to establish communications. The keypad allows the stranded conductors may be used for interconnection of user to set the Magnetrol device RS-485/Modbus port to units.
  • Page 22: Troubleshooting

    TROUBLESHOOTING SOFTWARE The following troubleshooting displays may occur on the instrument: Message Action Password invalid Re-enter data and correct password. Err New Pwd Fail When changing the password, the second entry of the new password does not match the first entry. Error:max = Entry of numeric data is outside the acceptable range.
  • Page 23: Agency Approvals

    AGENCY APPROVALS FACTORY MUTUAL (FM) CANADIAN STANDARDS ASSOCIATION (CSA) MODEL APPROVALS MODEL APPROVALS Electronics: Hazardous environments: Electronics: Hazardous environments: TA1-X2XX-110 Class I, Div. 2 Groups A, B, C, & D TA1-X2XX-110 Class I, Div. 2 Groups A, B, C, & D Class II, Div.
  • Page 24 SPECIFICATIONS cont. DIMENSIONAL SPECIFICATIONS INCHES (MM) 4.63 (118) Dia. 2.75 (70) 9.50 6.75 (241) " NPT (171) or M20 Conduit connection 3.23 (82) 9.50 (241) 13.00 Insertion (330) length MODEL " 6.00 (152) Figure 15 Figure 16 Electronics (side view) Insertion probe for use with Figure 15 compression fitting...
  • Page 25 SPECIFICATIONS cont. DIMENSIONAL SPECIFICATIONS INCHES (MM) Length (L) Overall Height (B) Height to Centerline With Flow Without Flow With Flow Without Flow Code Size Conditioning Conditioning Conditioning Conditioning Flange inches (mm) inches (mm) inches (mm) inches (mm) inches (mm) inches (mm) inches (mm) ⁄...
  • Page 26: Model Number

    M O D E L N U M B E R R E M O T E T R A N S M I T T E R W I T H I N S E R T I O N P R O B E INPUT VOLTAGE 120 VAC 240 VAC...
  • Page 27 M O D E L N U M B E R I N S E R T I O N P R O B E UNIT OF MEASUREMENT Probe length in tenths of an inch Probe length in centimeters MATERIALS OF CONSTRUCTION 316/316L stainless steel Hastelloy C-276 PROCESS CONNECTION...
  • Page 28 M O D E L N U M B E R R E M O T E T R A N S M I T T E R W I T H F L O W B O D Y INPUT VOLTAGE 120 VAC 240 VAC...
  • Page 29 M O D E L N U M B E R F L O W B O D Y MATERIALS OF CONSTRUCTION All stainless steel Carbon steel body with stainless steel sensor SIZE ⁄ inch ⁄ inch 1 inch ⁄ inch 2 inch 3 inch...
  • Page 30: Replacement Parts

    REPLACEMENT PARTS Description Part Number WARNING: EXPLOSION HAZARD NEMA 4X enclosure Consult Factory Substitution of components may impair suitability for Enclosure gasket 012-1606-001 Class I, Division 2. Keypad overlay Consult Factory 120 VAC, 0 relays Z30-2218-001 120 VAC, 2 relays Z30-2218-002 120 VAC, 4 relays Z30-2218-003...
  • Page 31: Glossary

    GLOSSARY Atmospheric pressure: Average pressure at sea level. PSIG: Gauge pressure in pounds per square inch above One atmosphere pressure is equal to 14.696 psia or atmospheric pressure. 29.921 inches of mercury or 406.8 inches of water. Rankine: Unit of temperature measurement referenced to Bar: Unit of pressure measurement.
  • Page 32 Copyright © 2006 Magnetrol International, Incorporated. All rights reserved. Printed in the USA. SUPERSEDES: February 2003 Magnetrol and Magnetrol logotype are registered trademarks of Magnetrol International. STI and STI logotype are registered trademarks of Magnetrol International. Performance specifications are effective with date of issue and are subject to change without notice.

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