Sitrans RD300 Remote Digital Display
- Power supply options Accepts single or dual 24 V DC input of current or voltage
- Large display The display is 6 digit and readable in sunlight
- Dual input with maths function Includes: addition, difference, average, multiplication, division, minimum, maximum, weighted average, ratio and concentration
Overview
The SITRANS RD300 is a panel mount remote digital display for level, flow, pressure, weighing, and other process instruments. Data can be remotely collected, logged and presented on a local computer using the free software available.
The front panel buttons make the RD300 easy to set up and programme. It also supports up to 8 relays and 8 digital I/O for process control and alarming, with a large dual-line 6-digit display that’s readable in sunlight.
The RD300 can be set up alone or in an optional enclosure which can house up to 6 displays. It can accept single or dual 24 V DC power supply, of current and voltage, making it compatible for use with many field instruments.
Manufactured by: Siemens-Milltronics
Model: Sitrans RD300 Remote Digital Display
Services offered for this product
- Sales
- Rental
- Installation
- Calibration
- Maintenance
- IoT Cloud Compatible
Applications
PC Monitoring
Data logging with RD software
Tank farms
Pump alternation control
Local or remote display of level, flow, pressure and Weighing instrument values
Specification
| Mode of operation | |
| Measuring principle | Analog to digital conversion |
| Measuring points | 1 or 2 instruments |
| Input | |
| Measuring range | |
| • Current | 4 ... 20 mA, 0 ... 20 mA |
| • Voltage | 0 V DC ... +10 V DC, 1 ... 5 V, 0 ... 5 V |
| Output signal | |
| Output | • 4 ... 20 mA (optional) • Modbus RTU |
| Relays | 2 or 4 SPDT (Form C) internal and/or 4 SPST (Form A) external; rated 3 A at 30 V DC and 125/250 V AC resistive load; 1/14 HP (50 W) at 125/250 V AC for inductive loads (optional) |
| Communications | • RS 232 with Modbus RTU • RS 422/485 with Modbus RTU • USB configuration and monitoring port |
| Accuracy | |
| 4 ... 20 mA optional output | ± 0.1 % FS ± 0.004 mA |
| Process input | ± 0.05 % of span ± 1 count, square root: 10 ... 100 % FS |
| Rated operating conditions | |
| Ambient conditions | |
| • Storage temperature range | -40 ... +85 °C (-40 ... +185 °F) |
| • Operating temperature range | -40 ... +65 °C (-40 ... +149 ºF) |
| Design | |
| Weight | 269 g (9.5 oz) (including options) |
| Material (enclosure) | • 1/8 DIN, high impact plastic, UL94V0, color: gray • Optional plastic, steel and stainless steel (Type 304, EN 1.4301) NEMA 4 enclosures |
| Degree of protection | Type 4X, NEMA 4X, IP65 (front cover); panel gasket provided |
| Electrical connection | |
| mA output signal | 2-core copper conductor, twisted, shielded, 0.82 ... 3.30 mm² (18 ... 12 AWG), Belden 8 760 or equivalent is acceptable |
| Electrical connection and relay connection | Copper conductor according to local requirements, rated 3A at 250 V AC |
| Power supply | |
| Input voltage option | 85 ... 265 V AC, 50/60 Hz; 90 ... 265 V DC, 20 W max. or jumper selectable 12/24 V DC ± 10 %, 15 W max. |
| Transmitter power supply | Terminals P+ & P-: 24 V DC ± 10 %, 12/24 V DC powered models selectable for 24, 10, or 5 V DC supply (internal jumper J4), 85 ... 265 V AC models rated at 200 mA max, 12/24 V DC powered models rated at 100 mA max, at 50 mA max for 5 or 10 V DC supply. |
| External loop power supply | 35 V DC max |
| Output loop resistance | • 24 V DC, 10 ... 700 ? max. • 35 V DC (external), 100 ... 1 200 ? max. |
| Displays and controls | |
| Main display | 0.6 inch (15 mm) high, red LEDs |
| Second display | 0.46 inch (12 mm) high, red LEDs, 6-digits: each (-99 999 ... 999 999) |
| Memory | • Non-volatile • Stores settings for minimum of 10 years if power is lost |
| Programming | • Primary: front panel • Secondary: Meter Copy or PC with SITRANS RD Software |
| Certificates and approvals | CE, UL, CUL |
| Options | |
| Enclosures | Plastic, steel and stainless steel (Type 304, EN 1.4301) NEMA 4 and 4X enclosures |