Emerson 54e User Manual

Enclosure: Epoxy-painted aluminum

NEMA 4X (IP65)
144 X 144 X 131 mm, DIN size (5.7 X 5.7 X 5.2 in.)

Front Panel: Membrane keyboard with tactile 

feedback and user selectable security. Light gray, 
blue and white overlay
Light gray enclosure, dark gray bezel

Display: Back-lit dot matrix LCD (7.0 x 3.5 cm),

blue on gray-green
The display contrast is compensated for ambient
temperature.

Process Variable Character Height: 16mm (0.6 in.) 

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.

CSA-LR34186: 

Max. relay contact rating: 28 Vdc; 110 Vac;
230 Vac; 6 amps resistive

FM: Max. relay contact rating: 28 Vdc resistive 

150 mA - Groups A & B; 
400 mA - Group C; 
540 mA - Group D

Code -01: 100 - 127 VAC, 50/60 Hz ± 6%, 6.0 W

200 - 253 VAC, 50/60 Hz ± 6%, 6.0 W

Code -02: 20 - 30 VDC, 6.0 W

Current Outputs: Output 1: pH, ORP, temperature, 

glass impedance, or reference impedance. 

Output 2: pH, ORP, temperature, glass impedance,
or reference impedance.

Each output is galvanically isolated, 0-20 mA or 
4-20 mA into 500 ohms maximum load at 24 Vdc 
or 115/230 Vac  or  500 ohms maximum load at 
100/200 Vac. Output 1 includes digital signal 
4-20 mA superimposed HART (Code -09 only).

RFI/EMI: EN-61326

LVD (Code -01 only): EN-61010-1

Ambient Temperature: 0 to 50°C (32 to 122°F)

NOTE: The analyzer is operable from -20 to 60°C 
(-4 to 140°F) performance.

Relative Humidity: 95%, non condensing

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

Weight/Shipping Weight: 1.8 kg/2.3 kg (4 lb/5 lb)

Measurement Range: 0 to 14 pH

Output Scale Expansion: Zero suppression: up to 13

pH units
Span: Any pH from 1 to 14

Accuracy: ± 0.01 pH

Repeatability: ± 0.01 pH

Stability: ± 0.01 pH/month, non-cumulative

Temperature Coefficient: Input: ± 0.003 pH/°C

Output: ± 0.006 pH/°C

Temperature Compensation: Pt 100 or Pt 1000 RTD, 

Automatic or Manual;  –15 to 120°C (5 to 248°F)

Measurement Range: –1400 to +1400 mV

Output Scale Expansion: Zero suppression: up to  

±1300 mV
Span: Any ORP range from 100 to 2800 mV

Accuracy: ± 1.0 mV

Repeatability: ± 1.0 mV

Stability: ± 1.0 mV/month, non-cumulative

Temperature Coefficient: Input: ± 0.2 mV/°C  

Output: ± 0.4 mV/°C

Temperature Measurement: –15 to 120°C (5 to 248°F)

Pt 100 or Pt 1000 RTD

Sira MC070111/00