Microflex 101-0095 Field Tools Loop Tap User Manual

Microflex 101-0095 Field Tools Loop Tap

• Fast and Easy loop transmitter test setup
• Reliable connections – No Alligator Clips
• Includes loop resistor
• HART modem clip terminals – simple modem connection
• Current meter trip jacks – connect/disconnect current meter without breaking the loop
• Compact durable enclosure stands up to rugged fi eld use
• PTC short circuit / over current protection

Block Diagram

Specifications

• Power
  Connect the screw terminals marked POWER to a DC power supply. Loop powered devices typically use a 24 volt DC supply capable of at least 30 milliamps.

• Device
  Connect the screw terminals marked DEVICE to the loop powered field device. Observe polarity while making the connections. There is no need to add a loop resistor – Loop Tap includes this resistor internally.

• Measuring Loop Current
  Loop Tap includes test lead tip jacks to simplify connection to a DC current meter for loop current measurements. An internal diode allows the meter to be connected or disconnected without interrupting the loop supply or opening the loop. Set the test meter to measure milliamps before connecting. Connect your test meter by inserting the meter lead ps into the trip jacks; red positive, black negative.
  Current meters with more than 1 volt drop across the meter may not read current accurately. Verify that your test meter is compatible before performing transmitter calibrations.

HART Protocol Modem Connections

A HART modem or HART communicator can be connected to the Loop Tap using the two terminals provided. The terminals allow standard HART modem mini-clips to be easily connected across the internal 250 ohm loop resistor.

Dimensions

Limited Warranty

• Microfl ex, LLC warrants this unit against defects in materials and workman-ship for a period of one year from the date of shipment. Microfl ex, LLC will, at its option, repair or replace equipment that proves to be defective during the warranty period. This warranty includes parts and labor.
• A Return Authorization (RA) number must be obtained from the factory and clearly marked on the outside of the package before equipment will be accepted for warranty work.
• Microfl ex, LLC believes that the information in this manual is accurate.In the event that a typographical or technical error exist, Microfl ex, LLC reserves the right to make changes without prior notice to holders of this edition. The reader should consult Microfl ex, LLC if any errors are suspect-ed. In no event should Microfl ex be liable for any damages arising out of or related to this document or the information contained in it.
• EXCEPT AS SPECIFIED HEREIN, MICROFLEX, LLC MAKES NO WARRANTIES OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. CUSTOMER’S RIGHT TO RECOVER DAMAGES CAUSED BY FAULT OR NEGLIGENCE ON THE PART OF MICROFLEX, LLC SHALL BE LIMITED TO THE AMOUNT THERETO-FORE PAID BY THE CUSTOMER. MICROFLEX, LLC WILL NOT BE LIABLE FOR DAMAGES RESULTING FROM LOSS OF DATA, PROFITS, USE OF PRODUCTS, OR INCIDENTAL OR CONSEQUENTIAL DAMAGES, EVEN IF ADVISED OF THE POSSIBILITIES THEREOF.
• This limitation of the liability of Microfl ex will ap-ply regardless of the form of action, whether in contract or tort, including negligence. Any action against Microfl ex, LLC must be brought within one year after the cause of action accrues. The warranty provided herein does not cover damages, defects, malfunctions, or service failures caused by owners failure to follow Microfl ex’s installation, operation, or maintenance instructions; owners modifica on of the product; owner’s abuse, misuse, or negligent acts; and power failure or surges, fi re, fl ood, accident, actions of third parties, or other events outside reasonable control.

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