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Rosemount
Rosemount 5081 Two-Wire Transmitter
Quote on request
No online payment · add lines to RFQ BOM
5081: two-wire XP; pH/ORP/cond/O2/Cl2; 4–20 mA HART/FF. RFQ.
Download datasheet PDF
RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Display
Two-line seven-segment; main 0.8 in (20 mm); secondary 0.3 in (7 mm) for temperature
Product Family
Rosemount 5081 two-wire transmitters for pH/ORP, contacting/toroidal conductivity, oxygen, ozone and chlorine
Communications
HART (-HT) or FOUNDATION Fieldbus (-FF/-FI); AMS compatible
Analog Output
Two-wire 4–20 mA with superimposed HART; output accuracy ±0.05 mA; scalable
Enclosure
Type 4X weatherproof corrosion-resistant; intrinsically safe design with barriers
Ph Accuracy
5081-P: ±0.01 pH / ±1 mV @ 25 °C; solution temperature compensation to 25 °C
Fits hazardous-area single-channel liquid analysis where you need a Rosemount 5081—two-wire explosion-proof transmitter for pH, ORP, conductivity, oxygen, ozone, or chlorine with 4–20 mA HART or FOUNDATION Fieldbus.
Key advantages
- Wiring — Two-wire loop-powered XP platform
- Inputs — pH, ORP, conductivity, oxygen, ozone, chlorine
- Outputs — 4–20 mA; HART or FOUNDATION Fieldbus
- Area — Explosion-proof transmitter construction
- Use — Single-channel analytical measurement
Typical applications
- Hazloc pH/ORP loops.
- Conductivity in classified areas.
- Two-wire analytical panels.
Selection guide
- Measurement type
- HART vs FF
- Sensor pairing
Common mistakes
- Expecting dual channels (use 56).
- Wrong sensor for 5081 input type.
- Ignoring area classification documentation.
When to RFQ / what to tell us
- Measurement, bus, sensor.
- Quantity, ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 36947 |
| Brand | Rosemount |
| Model | Model 5081 Transmitters |
| Product type | Liquid Analysis Transmitter |
| Type | Two-wire explosion-proof liquid analysis transmitter (Rosemount 5081) |
| Inputs | Single channel: pH, ORP, conductivity, oxygen, ozone, chlorine |
| Outputs | 4–20 mA; HART or FOUNDATION Fieldbus |
| Feature | Hazardous-area two-wire transmitter platform |
Documents
FAQ
Q: Two-wire? A: Yes — loop-powered two-wire XP transmitter.
Q: Fieldbus? A: HART or FOUNDATION Fieldbus options.
Q: What should I send for a quote? A: Measurement/bus/sensor, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Display | Two-line seven-segment; main 0.8 in (20 mm); secondary 0.3 in (7 mm) for temperature |
| Product Family | Rosemount 5081 two-wire transmitters for pH/ORP, contacting/toroidal conductivity, oxygen, ozone and chlorine |
| Communications | HART (-HT) or FOUNDATION Fieldbus (-FF/-FI); AMS compatible |
| Analog Output | Two-wire 4–20 mA with superimposed HART; output accuracy ±0.05 mA; scalable |
| Enclosure | Type 4X weatherproof corrosion-resistant; intrinsically safe design with barriers |
| Ph Accuracy | 5081-P: ±0.01 pH / ±1 mV @ 25 °C; solution temperature compensation to 25 °C |
| Temperature Compensation | Automatic/manual; pH sensor temp 5–270 °F (−15–130 °C) class per sensor |
| Power | Loop-powered; HART supply at transmitter terminals ≥12 VDC after cable/load drop (250 Ω min HART load) |
| Memory | Non-volatile retention of program and calibration through power loss |
| Variants | 5081-P pH/ORP; 5081-C contacting conductivity; 5081-T toroidal conductivity; amperometric oxygen/ozone/chlorine variants |
| Programming | Infrared remote or HART/FF communicator; automatic buffer recognition for pH |