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MODEL 5081-P-FF/FI SPECIFICATIONS
SPECIFICATIONS -GENERAL
Case: Cast aluminum containing less than 6% magnesium.
NEMA 4X (IP65), NEMA 7 (explosion-proof)
Epoxy-polyester paint, Neoprene O-ring seals
Dimensions: 6.3 in. x 6.9 in. x 6.4 in. (160 mm x 175 mm x 161
mm); diameter 6.1 in (155 mm)
Conduit Openings: 3/4 in. FNPT
Reference Impedance: Transmitter accepts high impedance
(i.e. glass) reference electrodes as well as low impedance
(i.e. silver-silver chloride) reference electrodes.
Response Time: Display reaches 95% of final reading within 10
seconds.
Temperature Sensors: The following RTDs can be used with
the Model 5081-P pH/ORP transmitter:
3 and 4 wire Pt 100 RTDs
3 and 4 wire Pt 1000 RTDs
Transmitter can also be used with two-wire RTDs.
Temperature Range: 5°F to 248°F (-15°C to 130°C)
Local Display: Two line LCD; first line shows process variable
(pH or ORP), second line shows temperature and output sig-
nal. When triggered, fault and warning messages alternate
with temperature and output readings.
Process variable: 7 segment LCD, 0.8 in. (20 mm) high
Temperature/output: 7 segment LCD, 0.3 in. (7 mm) high
Display board can be rotated 90 degrees clockwise or coun-
terclockwise.
During calibration and programming, messages and prompts
appear in the temperature/output area.
Power Supply and Load Requirements:
A power supply volt-
age of 9-32 Vdc at 22 mA is required.
Security: User selected security code prevents accidental
changes to program settings.
Ambient Temperature: -4 to 149°F (-20 to 65°C)
Relative Humidity: 0 to 95% (with covers sealed)
Storage Temperature: -22 to 176°F (-30 to 80°C)
EMI/RFI: Meets the requirements of
EN-61326
Hazardous Area Classification:
Intrinsic Safety:
Class I, II, III, Div. 1
Groups A-G
T4 Tamb = 70°C
Exia Entity
Class I, Groups A-D
Class II, Groups E-G
Class III
T4 Tamb = 70°C
ATEX 0600 II 1 G
Baseefa02ATEX1284
EEx ia IIC T4
Tamb = -20°C to +65°C
Non-Incendive:
Class I, Div. 2, Groups A-D
Dust Ignition Proof
Class II & III, Div. 1, Groups E-G
NEMA 4X Enclosure
Class I, Div. 2, Groups A-D
Suitable for Class II, Div. 2, Groups E-G
T4 Tamb = 70°C
Explosion-Proof:
Class I, Div. 1, Groups B-D
Class II, Div. 1, Groups E-G
Class III, Div. 1
Class I, Groups B-D
Class II, Groups E-G
Class III
Tamb = 65°C max
SPECIFICATIONS - pH
pH Input Range: 0 to 14 pH
Temperature Input Range: 5°F to 248°F (-15°C to 130°C)
Accuracy at 25°C: ±0.01 pH
Repeatability at 25°C: ±0.01 pH
Resolution: 0.01 pH and 0.1°C or °F
Stability at 25°C: 0.25% per year
Diagnostics: The internal diagnostics can detect:
Calibration Error Low Temperature Error
High Temperature Error Sensor Failure
Line Failure CPU Failure
ROM Failure Input Warning
Glass Failure Glass Warning
Reference Failure Reference Warning
Once one of the above is diagnosed, the LCD will display a
message describing the failure/default detected.
Temperature Compensation: Automatic or manual between 5°F
to 248°F (-15°C to 130°C)
Solution Temperature Compensation: Transmitter will convert
pH measured at any temperature to the pH at 25°C.
Temperature coefficient is programmable between -0.044
pH/°C and 0.028 pH/°C
Calibration: Automatic two-point and manual two-point buffer
calibration. For automatic calibration, the transmitter recog-
nizes NIST, DIN 19266 and 19267, JIS 8802, BSM, Merck,
and Ingold buffers.
SPECIFICATIONS - ORP
ORP Input Range: -1400 to 1400 mV
Temperature Input Range: 5°F to 248°F (-15°C to 130°C)
Output Scale Expansion: Continuously expandable between -
1400 and 1400 mV
Accuracy at 25°C: ±1 mV
Repeatability at 25°C: ±1 mV
Resolution: 1 mV and 0.1°C or °F
Stability at 25°C: 0.25% per year
2
Sira MC070112/00