Rosemount 751 field signal indicator, 4–20 mA, LCD
Pricing depends on specification, quantity and delivery location. Send your requirement and we reply with a costed quotation within 24 hours.
Quick overview
- Type: Indicators & controllers
- Hazardous area: Hazardous-area rated / option
- Genuine productsSourced from the manufacturer or authorised channels
- Delivery across BangladeshDhaka, Chattogram and all industrial zones
- After-sales supportInstallation guidance and warranty handling
- Reply within 24 hoursCall +880 1713 552466 or email hello@argonmark.com
Specifications
| General | |
|---|---|
| Part no. | BD-1393 |
| Category | Oil & Gas Instruments |
| Group | Instrumentation & Control |
| Brand | Rosemount |
| Model | 751 |
| Technical | |
| Type | Indicators & controllers |
| Hazardous area | Hazardous-area rated / option |
Datasheet
Technical features
| Displays any two-wire transmitter signal (pressure, flow, level, temperature) where an integral meter is hard to see | |
| Field-configurable 4 mA and 20 mA points with linear, square-root or filtered response | |
| 20-segment bar graph represents the 4–20 mA signal | |
| Meter rotates in 90° steps; vibration- and corrosion-resistant housing | |
| Calibration stored in EEPROM; a meter failure does not affect the transmitter loop |
Applications
| Remote indication of pressure, flow, level or temperature transmitter loops | |
| Hazardous-area process plants |
Environmental
| Operating temperature | −40 to 70 °C (display may not be readable below −20 °C or above 60 °C; loop remains intact) |
|---|---|
| Storage temperature | −40 to 85 °C |
| Humidity | 0–95% RH non-condensing |
| Enclosure rating | NEMA Type 4X, CSA Type 4X, IP66 |
Certification options
| Explosion-proof / flameproof | USA, Canada, ATEX, IECEx, China, Brazil, EAC, Korea |
|---|---|
| Intrinsic safety | USA (with non-incendive), Canada, ATEX, IECEx, Brazil, EAC |
| Non-incendive | ATEX Type n |
Key specifications
| Input | 4–20 mA DC (two-wire loop) |
|---|---|
| Display | LCD, −999 to 9999, linear or square root, 20-segment bar graph |
| Accuracy | ±0.25% of calibrated range ±1 digit |
| Enclosure | NEMA 4X, CSA 4X, IP66, aluminium |
| Approvals | Explosion-proof / flameproof and intrinsic safety options (ATEX, IECEx, USA, Canada, others) |
Functional
| Input signal | 4–20 mA DC |
|---|---|
| 4 mA point limits | −999 to 1000 |
| Span limits | −999 to 9999 (4 mA point + span ≤ 9999) |
| Display response | Linear; optional square root or filtered |
| Overload limit | 666 mA maximum |
| Update period | 750 ms (response within two update periods; nine with filter) |
| Voltage drop | 0.7 V DC typical, 1.0 V DC maximum |
| Under/over range | < 3.5 mA: display blank; > 22.0 mA: flashes 112.5% of full scale or 9999 |
Performance
| Indication accuracy | ±0.25% of calibrated range ±1 digit |
|---|---|
| Digital resolution | 0.05% of calibrated range ±1 digit |
| Bar graph resolution | 5.0% of calibrated range |
| Stability | 0.1% of calibrated range ±1 digit per six months |
| Temperature effect | 0.01%/°C on zero, 0.02%/°C on span |
| EMC | Meets EN 61326 industrial requirements |
Physical
| Enclosure | Low-copper aluminium, polyurethane paint, Buna N O-rings |
|---|---|
| Meter | 2¼ in face, four ½ in high characters |
| Electrical connection | 3-pole terminal block, ¾–14 NPT conduit (¾ to ½ in stainless reducer optional) |
| Mounting | Optional bracket for 2 in pipe |
| Weight | 1.8 kg (2.27 kg with bracket) |
Notes
| Data from the manufacturer's published datasheet. Confirm model, range, materials and approvals with Argonmark before ordering. |
Photo: courtesy of Rosemount, used with permission (source) — background removed by Argonmark. All photo credits
Description
The Rosemount 751 is a loop-powered field indicator that displays the 4–20 mA signal of any two-wire transmitter, for example pressure, flow, level or temperature, where the transmitter's own meter is hard to see. Its LCD can be scaled from −999 to 9999 with a linear or square-root response and shows a 20-segment bar graph, with an indication accuracy of ±0.25% of calibrated range.
The low-copper aluminium housing is rated NEMA 4X / IP66 for −40 to 70 °C and can be ordered with explosion-proof, flameproof or intrinsically safe approvals, including ATEX and IECEx.
Argonmark Ltd supplies Rosemount instruments across Bangladesh — Dhaka, Chattogram, Gazipur, Narayanganj and the gas fields, refineries, terminals and power plants beyond. Send us the model, range, process connection, output and any hazardous-area requirement, and we will confirm the right configuration, lead time and price.
Questions & answers
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