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Rosemount
Rosemount Model 5081 Transmitters
Quote on request
No online payment · add lines to RFQ BOM
2-wire XP transmitter; pH/cond/O2/Cl2; HART/FF; Type 4X. RFQ + selection help.
Download datasheet PDF
RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Measuring range
Single-channel: pH/ORP, contacting/toroidal conductivity, oxygen (ppm/ppb), free/total chlorine, ozone (model/sensor dependent)
Accuracy
Analog output accuracy ±0.05 mA; measurement accuracy sensor-dependent (e.g. oxygen 0–99 ppm with 499A DO)
Output
Two-wire 4–20 mA with HART or FOUNDATION Fieldbus
Supply
HART: 12–42.4 Vdc at terminals (30 Vdc max IS); 250 Ω min load for HART
Protection
Type 4X (IP65) cast aluminum epoxy-coated explosion-proof enclosure
Ambient temperature
−4 to 149 °F (−20 to 65 °C); storage −22 to 176 °F (−30 to 80 °C); RH 0–95% non-condensing
Fits explosion-proof two-wire liquid analysis where you need a Rosemount 5081 for pH, ORP, conductivity, oxygen, ozone or chlorine with 4–20 mA HART or FOUNDATION Fieldbus in a Type 4X cast-aluminum housing.
Key advantages
- Type — Two-wire explosion-proof liquid analysis transmitter
- Measurements — pH, ORP, conductivity, oxygen, ozone, chlorine
- Outputs — 4–20 mA with HART or FOUNDATION Fieldbus
- Housing — Cast aluminum Type 4X / IP65 XP class
- Power — Loop-powered (min ~12 Vdc at terminals class)
Typical applications
- Hazardous-area analytical transmit.
- XP pH/DO/chlorine loops.
- FF/HART liquid analysis in XP housings.
Selection guide
- Measurement board — 5081-P/C/T/A class
- Protocol — HART vs FF
- Approvals — XP/IS needs
- Sensor — Matching 399/499 family
Common mistakes
- Using polycarbonate 1056 in XP-required areas.
- Wrong measurement board.
- Ignoring entity/loop voltage budget.
When to RFQ / what to tell us
- Measurement, protocol, approvals.
- Quantity and ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 30764 |
| Brand | Rosemount / Emerson |
| Model | 5081 |
| Product type | Liquid Analysis Transmitter |
| Type | Two-wire explosion-proof liquid analysis transmitter |
| Measurements | pH, ORP, conductivity, oxygen, ozone, chlorine (board-dependent) |
| Outputs | 4–20 mA with HART or FOUNDATION Fieldbus |
| Housing | Cast aluminum Type 4X / IP65 explosion-proof class |
| Power | Loop-powered two-wire (min ~12 Vdc at terminals class) |
Documents
FAQ
Q: XP housing? A: Cast aluminum Type 4X / IP65 explosion-proof class.
Q: Protocols? A: HART or FOUNDATION Fieldbus.
Q: What should I send for a quote? A: Measurement/protocol/approvals, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Measuring range | Single-channel: pH/ORP, contacting/toroidal conductivity, oxygen (ppm/ppb), free/total chlorine, ozone (model/sensor dependent) |
| Accuracy | Analog output accuracy ±0.05 mA; measurement accuracy sensor-dependent (e.g. oxygen 0–99 ppm with 499A DO) |
| Output | Two-wire 4–20 mA with HART or FOUNDATION Fieldbus |
| Supply | HART: 12–42.4 Vdc at terminals (30 Vdc max IS); 250 Ω min load for HART |
| Protection | Type 4X (IP65) cast aluminum epoxy-coated explosion-proof enclosure |
| Ambient temperature | −4 to 149 °F (−20 to 65 °C); storage −22 to 176 °F (−30 to 80 °C); RH 0–95% non-condensing |
| Display | Two-line 7-segment LCD (0.8 in process / 0.3 in secondary); rotatable display board |
| Approvals | Intrinsically safe; Non-incendive; Explosion-proof hazardous location approvals |
| Mounting | Explosion-proof field housing; ¾-in NPT conduit openings |
| Sensor type | Compatible with most Rosemount Analytical sensors including 499A amperometric DO/chlorine/ozone |
| Notes | Specs from Emerson Rosemount 5081 PDS 00813-0100-3581 Rev T + RM + emerson.com product page. |
| Dimensions | 6.3 × 6.9 × 6.4 in (160.5 × 175.3 × 161.3 mm) |
| Weight | 10 lb / shipping 11 lb (4.5 / 5.0 kg) |