Application LM02 Single Tank Level Monitor for Analog Level Sensors
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Model 515 Application LM02 Single Tank Level Monitor for Analog Level Sensors The 515 LM02 application monitors and measures the level of product in a single tank. The instrument uses the 4-20mA signal from a wide range of level sensors, including pressure transmitters, ultrasonic sensors and capacitance probes. Calculations are based on the analog input signal representing the product level in the tank. The level monitor provides a 20 point strapping table and product density for level to volume and volume to mass conversions. The instrument can display Volume, Percentage Full and Mass as well as Level. Relay alarms are freely assignable as high or low alarms and an open collector output is provided for programmable level control. where: A = normalised input signal with density correction. A* = A for linear tanks. A* = f(A) for non-linear tanks. f(A) = level to volume normalised strapping table. 20 point level to volume strapping table Level control output Accepts level and pressure (product head) sensors Density correction available for pressure level sensors Provides volume to mass conversion via density value Freely assignable alarms for high or low levels Selection of Detail or Basic main menu to suit operator and application Selection of second language and user tags RTC logging with over 1000 entries. 4-20 mA retransmission RS232 and RS485 or Ethernet (optional) serial ports Modbus RTU, Printer and other serial port protocols Front panel adjustment of 8-24 V DC output voltage Backlit display level = (L max - L min) A + L min volume = (V max - V min) A* + V min mass = volume density A sub-menu gives full details of alarm status and can offer direct access to change the alarm setpoints. The instrument also has density correction available for pressure level sensors to cater for a deviation in product density. Analog Input

Displayed Information Analog Input Types The front panel display shows the current values of the input variables and the results of the calculations. A list of the variables for this application and their type (total or rate) is shown at the end of this document. The analog input for this application is fixed to accept a 420mA signal. The instrument can be supplied with a real-time clock for data logging of over 1000 entries of the variables as displayed on the main menu. Terminal Designations Terminal Label Signal ground Communications There are two communication ports available as...

Specifications Operating Environment Temperature Humidity Power Supply Consumption Protection Dimensions (panel option) +5 °C to +40 °C (standard - no coating) -20 °C to +60 °C (with conformal coating) -30 °C to +60 °C (ExD housing with heater) 0 to 95% non condensing (conformal coating) 5% to 85% non condensing (no coating) 100-240 V AC (+/-10%) 50-60 Hz (+/-10%) or 12-28 V DC 10 W (max) Overvoltage category II Sealed to IP65 (Nema 4X) when panel mounted 147 mm (5.8") width 74 mm (2.9") height 170 mm (6.6") depth (behind the panel) Display Type Digits Characters LCD Backup Update Rate...

Ordering Information Product Codes Model 515 Supplementary Code Field mount enclosure (NEMA 4X / IP66) Explosion proof Ex d (IECEx/ATEX), metric glands (5 specifies heater) Panel mount enclosure Explosion proof Ex d (CSA), NPT glands (6 specifies heater) 0 1 4 logic inputs, 2 isolated outputs, 4 relays, real-time clock data logging, RS232 (DB9) and RS485 communication ports Output Options 4 logic inputs, 1 isolated output, 2 relays (only relay type 1 is available), RS232 (DB9) communication port 4 logic inputs, 2 isolated outputs, 4 relays, real-time clock data logging, RS232 (DB9) &...