1.1 INTRODUCTION 1.1 INTRODUCTION The Anderson “LD/LA” standard and pharmaceutical series level transmitters are unique devices designed for level control applications where pressure based technology provides the best overall solution, but where bottom access for the sensor is not available or prefer- able.
2.2 ELECTRICAL WIRING 2.2.1 Signal Cable Anderson recommends the use of 18-24 AWG, 4 conductor cable. In addition, it should be foil shielded with a continuous drain wire (If Factory supplied, Belden #9534 or equivalent). Although only two conductors and the drain wire are utilized, cable as specified above will retain its roundness when inserted into the seal-tight grommet.
FIGURE 2-2 REQUIRED SUPPLY VOLTAGES FIGURE 2-2 REQUIRED SUPPLY VOLTAGES FIGURE 2-2 REQUIRED SUPPLY VOLTAGES FIGURE 2-2 REQUIRED SUPPLY VOLTAGES FIGURE 2-2 REQUIRED SUPPLY VOLTAGES 1400 1200 MAXIMUM LOOP RESISTANCE (OHMS) (WIRE PLUS RECEIVER) OPERATING RANGE 18 24 30 36 40 POWER SUPPLY VOLTAGE (VDC) It is recommended that the leads be stripped and tinned to provide for optimum signal connections.
2.3 TRANSMITTER ELECTRONIC "ZERO" CALIBRATION 2.3 TRANSMITTER ELECTRONIC "ZERO" CALIBRATION 2.3 TRANSMITTER ELECTRONIC "ZERO" CALIBRATION 2.3 TRANSMITTER ELECTRONIC "ZERO" CALIBRATION 2.3 TRANSMITTER ELECTRONIC "ZERO" CALIBRATION Upon installation of a new Factory Calibrated unit, and as part of routine maintenance, a Zero calibration adjustment must be performed.
2.4 CALIBRATION VERIFICATION - UTILIZING ON-BOARD SETUP 2.4 CALIBRATION VERIFICATION - UTILIZING ON-BOARD SETUP 2.4 CALIBRATION VERIFICATION - UTILIZING ON-BOARD SETUP 2.4 CALIBRATION VERIFICATION - UTILIZING ON-BOARD SETUP 2.4 CALIBRATION VERIFICATION - UTILIZING ON-BOARD SETUP Utilizing a digital multimeter attached to the on-board testpoints, the LD/LA transmitter may be switched to an alternate output mode where the signal viewed on the meter is proportional to the current calibration range of the transmitter.
Remove sensor from vessel if already installed – leave loop wiring attached Provide loop power to sensor if performing a bench test Attach snap fit calibration adapter to sensor fitting (Available from Anderson) Sensor MUST remain stationary, with no movement...
/ re-calibration of the output range. Note: • Use caution if altering factory calibration – no record will exist at Anderson pertaining to changes • Calibration MUST remain within range parameters of unit – be sure to refer to tables provided •...
FIGURE 2-8 FIELD CAL HOOKUP FIGURE 2-8 FIELD CAL HOOKUP FIGURE 2-8 FIELD CAL HOOKUP FIGURE 2-8 FIELD CAL HOOKUP FIGURE 2-8 FIELD CAL HOOKUP HOOK METER TO METER MODE TESTPOINTS SET TO DC MILLIAMP FOR CALIBRATION D C mA BLACK METER LEAD (TEST-) RED METER LEAD...
LD/LA Series Transmitter. Note: • Use caution if altering factory calibration – no record will exist at Anderson pertaining to changes • Calibration MUST remain within range parameters of unit – be sure to refer to tables provided •...
FIGURE 2-10 PRESSURE CAL HOOKUP FIGURE 2-10 PRESSURE CAL HOOKUP FIGURE 2-10 PRESSURE CAL HOOKUP FIGURE 2-10 PRESSURE CAL HOOKUP FIGURE 2-10 PRESSURE CAL HOOKUP HOOK METER TO METER MODE TESTPOINTS SET TO DC MILLIAMP FOR CALIBRATION DC mA BLACK METER LEAD (TEST-) Set to RUN MODE RED METER LEAD...
2.8 CONTROLLER TUNING 2.8 CONTROLLER TUNING 2.8 CONTROLLER TUNING 2.8 CONTROLLER TUNING 2.8 CONTROLLER TUNING As depicted in Figure 2-1, the typical application utilizes the signal from the transmitter to interface with a programmable controller. In turn, this unit typically sends an output that is used to throttle a feed valve.
3.2 CALIBRATION CHECKS 3.2 CALIBRATION CHECKS To maintain proper accuracy, Anderson recommends yearly ZERO signal (4.00 mA) checks. A record of these readings will help to maintain a consistent schedule. If re-zeroing does not correct inaccuracies seen in the receiver, calibration of the receiver itself should be performed.
If signal is proper, approximately 4 mA with no product on sensor, then problem is with external wiring. NOTE: Be sure to observe proper polarity as described in Figure 2-3 If any of the above indicate a transmitter problem, call your local distributor, or Anderson Technical Service directly.
These products are warranted to be free from functional defects in materials and workman- ship at the time the products leave the Anderson factory and to conform at that time to the specifications set forth in the relevant Anderson instruction manual or manuals, sheet or sheets, for such products for a period of two years.
Need help?
Do you have a question about the LD Series and is the answer not in the manual?
Questions and answers