This document is the instruction manual for Anderson Company's L3 pressure and level transmitter, introducing the product's functions and features and usage methods.
The Anderson Instrument L3 Pressure and Level Transmitter is designed for liquid measurement applications in the food and beverage industry. It utilizes an internal piezoelectric transducer and an RTD temperature element to measure pressure and temperature, converting these signals into industry-standard 4...20mA and Hart 7.0 outputs. The unit features an integral display and a four-button interface for reconfiguration of parameters such as tank geometry and product density.
| Measuring range | 0...0.4 bar / -1...2 psi / -1...7 bar / -1...35 psi |
|---|---|
| Turndown | max. 10:1 of upper range limit |
| Measurement accuracy | ≤ 0.10 % in calibrated measuring range |
| Temperature range (Process) | -18...110 °C (0...230 °F) |
| Response time | < 0.1 seconds |
| Output Current loop | 4...20mA and Hart 7.0 |
| Auxiliary voltage | 18...35 V DC |
| Weight | approx. 780 g |
This unit accepts DC voltage only; connection to AC voltage can cause failure of the sensor and/or risk of electrocution.
Anderson - Negele recommends a cable of 24 gauge, 4 conductor, shielded or equivalent.
The normal color codes are RED for Loop + and BLACK for Loop -.
The tightening torque for assembly is 27 Nm (20 ft-lbs).