Emerson Process Management 3081 pH/ORP instruction manual Specifications ORP, Ordering Information

MODEL 3081 pH/ORP	SECTION 1.0
	DESCRIPTION AND SPECIFICATIONS
1.4 SPECIFICATIONS - pH	1.5 SPECIFICATIONS - ORP

pH Input Range: 0 to 14 pH

Temperature Input Range: 5°F to 248°F (-15°C to 120°C)

Output Scale Expansion: Continuously expandable between pH 0 and 14

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

ORP Input Range: -1400 to 1400 mV

Temperature Input Range: 5°F to 248°F (-15°C to 120°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

Temperature Compensation: Automatic or manual between 5°F to 248°F (-15°C to 120°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 trans- mitter recognizes NIST, DIN 19266 and 19267,

JIS 8802, BSM, Merck, and Ingold buffers.

1.6 ORDERING INFORMATION

The Model 3081 pH/ORP Smart two-wire microprocessor transmitter is housed in a NEMA 4X case. Communication with the transmitter is through a hand-held infrared remote controller, a Model 275 HART communicator, or any HART com- patible device. Automatic temperature compensation is standard, and the transmitter can be programmed to convert meas- ured pH to pH at 25°C (solution temperature compensation). Continuous sensor diagnostics are standard.

MODEL

3081pH/ORP HART SMART TWO-WIRE MICROPROCESSOR TRANSMITTER

Code	REQUIRED SELECTION
01-20	LCD (Infrared Remote Control - included)
01-21	LCD (Infrared Remote Control - not included)
Code	AGENCY APPROVALS

67FM approved, intrinsically safe when used with approved sensor and safety barrier, explosion-proof

69CSA approved, intrinsically safe when used with approved sensor and safety barrier, explosion-proof

73CENELEC approved, intrinsically safe, safety barrier required

3081pH - 01 - 20 - 67 EXAMPLE

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