DeltaSpan™ General Purpose External Mount Pressure Level Transmitter LD30 Series Manual Cable Series (LD30‐S_01) Conduit Series (LD30‐S_11) Flowline, Inc. 10500 Humbolt Street Los Alamitos, CA 90720 Tel: (562) 598‐3015 Fax: (562) 431‐8507 www.flowline.
INTRODUCTION / TABLE OF CONTENTS Step One The LD30 Series Industrial Pressure Transmitters converts a single positive pressure into a standard 4‐20 mA output signal. The transmitter can be used to accurately measure compatible gases and liquids with full scale accuracy of 0.25%. Designed for industrial environments with a NEMA 4X (IP66) housing, this transmitter resists most effects of shock and vibration. CAUTION: Do not exceed specified supply voltage ratings.
SPECIFICATIONS Service: Wetted Materials: Accuracy: Temperature Limit: Compensated Temperature Range: Thermal Effect: Pressure Limit: Power Requirement: Output Signal: Response Time: Max. Loop Resistance: Current consumption: Electrical Connections: Process connection: Enclosure rating: Mounting Orientation: Weight: Agency approval (CE): Rev B Step Two Compatible gases or liquids Body: 316 SS, 316L SS ±0.25% of full scale F: 0° to 200° C: ‐18° to 93° F: 0° to 175° C: ‐18° to 79° Less than ±0.02%/°F.
DIMENSIONS Step Three Technology: A pressure transmitter is installed near or on the bottom of the tank by way of a ¼” NPT thread. A stainless steel pressure diaphragm within the pressure transmitter is exposed on one side to the application fluid. The amount of pressure applied to the sensing surface will slightly deflect the diaphragm. The deflection of the diaphragm is measured by a built‐in microprocessor that provides greater linearity correction over common thermal compensation methods.
SAFETY PRECAUTIONS Step Four About this Manual: PLEASE READ THE ENTIRE MANUAL PRIOR TO INSTALLING OR USING THIS PRODUCT. This manual includes information on all versions of the DeltaSpan Series Industrial Pressure Level Transmitter from Flowline; models LD30‐____. Please refer to the part number located on the transmitter label to verify the exact model which you have purchased. User’s Responsibility for Safety: Flowline manufactures a wide range of liquid level sensors and technologies.
COMPONENTS Step Five DeltaSpan is offered in six different models, based upon pressure rating and material. Depending on the model purchased, you may or may not have been shipped all the components shown below. DeltaSpan™ General Purpose External Mount Pressure Level Transmitter Part Maximum Range in Interface/ Number Pressure Water Column Connection LD30‐S001 9’ (2.7 m) Cable 05 psi 11.54 ft wc / 3.52 m wc LD30‐S011 Terminal Block in Housing LD30‐S201 9’ (2.7 m) Cable 15 psi 34.63 ft wc / 10.
GETTING STARTED Step Six The LD30 series will be installed near the bottom of the vessel. The switch can be installed through the side wall or through the bottom. Please note that the physical location of the level transmitter will indicate the lowest level of measurement within the tank. For example: mounting the transmitter 1 foot from the bottom of the tank, then the lowest reading of liquid will be 1 foot from the bottom.
GETTING STARTED (continued) Step Six How does Specific Gravity affect pressure transmitters? The Specific Gravity (SG) of a liquid will not change the pressure of the transmitter, but will affect how the transmitter reads the liquid height. Remember, liquids with a SQ < 1.0 are lighter than water and liquids with a SG > 1.0 are heavier than water. Water has a SG = 1.0. A SG < 1.0 requires more liquid (a taller water column) to equal the same pressure as with water. A SG > 1.
GETTING STARTED (continued) Step Six How to select the correct pressure transmitter? The objective is to select a sensor with an operational range that will cover the entire application span. If the liquid height of the tank is above the sensor’s Maximum Liquid Height, then the sensor will not be able to read a full tank level. Compare the tank’s Pressure @ Full against the sensor’s pressure range to select a sensor.
GETTING STARTED (continued) Step Six How to configure a panel meter when a pressure transmitter is used? This method works with the LI55 series, LI25 Series, LI10 Series and LI50 Series. These panel meters are configured using the SCALE function. The SCALE function typically has four settings. These settings are as follows: Settings Default Represents Typical Setting Input 1 04.000 Input current @ Empty 04.000 (mA) Display 1 (Empty) 04.000 Display value @ Empty Empty value Input 2 20.
ELECTRICAL INSTALLATION Step Seven Wiring: An external power supply delivering 13‐30 VDC with minimum current capability of 40 mA DC (per transmitter) is required to power the control loop. See Figure A below for connection of the power supply, transmitter and receiver. The range of appropriate receiver load resistance (RL) for the DC power supply voltage available is expressed by the formula: RLmax = (Vsup – 10V) / 20 mA DC Shielded cable is recommended for control loop wiring.
INSTALLATION Step Nine The LD30 series is designed to operate with only the installation thread being exposed to the fluid. Avoid installing the level transmitter along the bottom of the tank as materials such as sludge will build up and coat/cover the port. 1. Location: Select a location where the temperature of the transmitter will be between 0 and 175°F (‐18 to 79°C). Distance from the receiver is limited only by total loop resistance.
MAINTENANCE Step Ten Maintenance should consist of inspection to see that the transmitter is free from debris and not coated with any substance, which would prevent liquid from freely entering and leaving the transmitter. If this occurs, the transmitter should be cleaned. Cleaning procedure: 1. Power: Make sure that all power to the transmitter, controller and/or power supply is completely disconnected. 2.
Warranty, Returns & Limitations Step Eleven Warranty Flowline warrants to the original purchaser of its products that such products will be free from defects in material and workmanship under normal use and service in accordance with instructions furnished by Flowline for a period of two years from the date of manufacture of such products.
