The Model 54e family of analyzers, with the appropriate sensors, monitor and control pH/ORP, conductivity/resistivity, dissolved oxygen (ppm and ppb level), free chlorine, total chlorine, or ozone in a variety of process liquids.

The analyzer/controller is housed in a rugged NEMA 4X (IP65) weatherproof, corrosion resistant enclosure of epoxy-painted aluminum. It is suitable for panel, pipe or wall mounting. All functions are accessible through the front panel membrane keyboard that features tactile feedback. The large back-lit dot-matrix liquid crystal display continuously indicates the measured variable in large numerals, along with the temperature, output value and two programmable process parameters (such as alarms or diagnostics variables). Three levels of security are available: 1) calibration, 2) output range and alarm setpoint adjustment, and 3) advanced configuration. A hinged front panel provides convenient wiring access. All operations and descriptive messages can be field selected for English, French, German, Italian, or Spanish.

The Model 54e is a member of the Rosemount SMART FAMILY® of instruments which is designed to communicate with the Model 275 HART® hand-held communicator and any other host, including AMS, that supports the 275 HART communication protocol.

The two independent, isolated outputs provide 4-20 or 0-20 mA signals for the process measurement and temperature. The controller option also allows PID control choices acting on process measurement or temperature. Manual control of the output may also be selected for routine maintenance and tests.

Three process alarms are a standard feature. All alarms have programmable high or low activation, independent setpoints, adjustable hysteresis (deadband), and time delay. One relay may be configured as a timer relay for chemical cleaning, which may be activated at a specific time interval. An overfeed timer feature is also selectable for any one process relay. The control option allows each alarm the additional choice of Time Proportional Control. During any relay activation, a corresponding Green LED is illuminated.

® SMART FAMILY is a registered trademark of Rosemount Inc.
® HART is a registered trademark of the HART Communication Foundation.

Enclosure: Epoxy-painted (dark gray) cast aluminum, NEMA4X (IP65). 144 x 144 x 132 mm (5.7 x 5.7 x 5.2 in.), DIN size panel cut-out.
Front Panel: Membrane keypad with tactile feedback. Three green LEDs indicate alarm status. Red LED indicates fault condition.
Display: Three-line, back-lit, dot matrix LCD, 70 x 35 mm. First line is measurement reading. Second line is temperature and current output. Third line is user-selectable. Character heights: 1st line - 16 mm (0.6 in.), 2nd and 3rd lines - 7 mm (0.3 in.).
Hazardous Location Approvals: Class I, Division 2, Groups A, B, C, & D. T5 Ta=50°C. Dust ignition proof: Class II, Division 1, Groups E, F, & G; Class III.
FM: Max. relay contact rating: 28 Vdc resistive
 150 mA - Groups A & B;
 400 mA - Group C;
 540 mA - Group D
CSA: Max. relay contact rating: 28 Vdc; 110 Vac; 230 Vac; 6 amps resistive. Enclosure Type 4.
Power: Code -01: 100 - 127 Vac, 50/60 Hz ± 6%, 8 W 200 - 253 Vac, 50/60 Hz ± 6%, 8 W Code -02: 20 - 30 VDC, 6 W
RFI/EMI: EN-61326
LVD (Code -01 only): EN-61010-1
Outputs: Two 4-20 mA or 0-20 mA isolated outputs. Continuously adjustable. Outputs can be assigned to the primary measurement, glass impedance (pH only), reference impedance (pH only), or temperature. Output dampening is user-selectable. Maximum load at 24 Vdc or 115/230 Vac is 500 ohms. Maximum load at 100/200 Vac is 500 ohms. Output 1 has superimposed HART signal (option -09 only). Outputs can be programmed for PID control (option -20 only).
Output Accuracy: ± 0.05 mA
Alarms:
 Relay 1 - Process, Interval, or Time Proportional Control (TPC requires code -20)
 Relay 2 - Process, Interval, or Time Proportional Control (TPC requires code -20)
 Relay 3 - Process, Interval, or Time Proportional Control (TPC requires code -20)
 Relay 4 - Sensor/analyzer and process fault alarm
 Each relay has a dedicated LED on the front panel.
 Relay Contacts: Relays 1-3: Epoxy sealed form A contacts, SPST, normally open
 Relay 4: Epoxy sealed form C, SPDT Resistive Inductive
       28 Vdc 5.0 Amps 3.0 Amps
     115 Vac 5.0 Amps 3.0 Amps
     230 Vac 5.0 Amps 1.5 Amps
Temperature Sensors Accepted: Pt 100 RTD, Pt 1000 RTD, 22K NTC thermistor (54eA only).
Ambient Temperature: 0 to 50°C (32 to 122°F). Analyzer can be operated between -20 and 60°C (-4 to 140°F) with some degradation in display quality.
Relative Humidity: 95% (maximum) non-condensing
Weight/Shipping Weight: 4 lb/5 lb (1.8 kg/2.3 kg)