Emerson 5081-P-FF/FI instruction sheet Specifications -General

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

Sira MC070112/00

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
2	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