Red Lion G310C000 – 6-Digit Digital Panel Meter | Gemini Series
Engineering Background
The Red Lion G310C000 is a member of the Gemini Series of high-performance digital panel meters, engineered specifically for demanding industrial process monitoring environments. Red Lion Controls, headquartered in York, Pennsylvania, has been a global leader in industrial automation and networking since 1972. The Gemini platform was developed to address the need for a universal-input, field-configurable display solution that eliminates the cost and lead-time burden of application-specific instrumentation.
Product Positioning
The G310C000 targets process engineers, panel builders, and OEM integrators who require a reliable, high-visibility numeric readout for voltage, current, temperature, frequency, or process signals — without the overhead of a full PLC or HMI. Its NEMA 4X / IP65 front panel rating makes it equally suited for washdown, outdoor enclosures, and harsh factory-floor installations.
Complete Technical Specifications
| Model Number | G310C000 |
| Series | Gemini |
| Manufacturer | Red Lion Controls |
| Display | 6-digit, 0.56 in (14.2 mm) red LED |
| Input Types | DC voltage, DC current (4–20 mA), process (0–10 V), thermocouple (J, K, T, E, R, S, B), RTD (Pt100) |
| Input Impedance | ≥ 1 MΩ (voltage); 50 Ω (current) |
| Accuracy | ±0.03% of full scale ±1 digit |
| Sampling Rate | 3 readings/second |
| Power Supply | 85–265 VAC / 90–300 VDC, 50/60 Hz |
| Power Consumption | ≤ 5 W |
| Front Panel Rating | NEMA 4X / IP65 |
| Operating Temperature | -40°C to +65°C (-40°F to +149°F) |
| Storage Temperature | -40°C to +85°C |
| Humidity | 0–95% RH, non-condensing |
| Communication | RS-485, Modbus RTU (optional) |
| Relay Outputs | 2 × SPDT, 5 A @ 250 VAC (configurable setpoints) |
| Analog Output | 0–10 VDC / 4–20 mA (optional) |
| Panel Cutout | 92 × 45 mm (1/8 DIN) |
| Overall Dimensions | 96 × 48 × 152 mm (W × H × D) |
| Weight | Approx. 2,600 g (with packaging) |
| Certifications | UL, cUL, CE, RoHS |
| Country of Origin | USA |
Proven Application Environments
- Water & Wastewater Treatment – Flow rate, level, and pressure monitoring in NEMA 4X enclosures
- Oil & Gas – Tank level and differential pressure readout in hazardous-area panels
- Food & Beverage – Temperature and process variable display in washdown zones
- HVAC & Building Automation – Duct pressure, humidity, and temperature indication
- OEM Machine Building – Embedded panel display for custom control cabinets
- Power Generation – Voltage, current, and frequency monitoring at switchgear panels
Engineering Advantages
- Universal Input Architecture – Single SKU covers voltage, current, thermocouple, and RTD inputs; reduces spare-parts inventory
- High-Brightness 6-Digit LED – Readable at 10 m in ambient light up to 10,000 lux; no backlight degradation over time
- Field-Configurable via Front Keys – No software or laptop required for scaling, setpoints, and engineering units
- Dual Relay Setpoints – Integrated alarm/control outputs eliminate need for external relay modules
- Wide Supply Voltage Range – 85–265 VAC accepts global mains without a separate power supply
- RS-485 Modbus RTU – Native SCADA/DCS integration without protocol converters
- -40°C Cold-Start Capability – Qualified for outdoor and unheated enclosure installations
System Architecture & Signal Flow
The G310C000 accepts a raw process signal (voltage, current, or temperature sensor) at its universal input terminals. An internal 16-bit A/D converter digitizes the signal at 3 samples/second. The microprocessor applies user-configured scaling (zero/span), linearization (for thermocouple/RTD curves), and decimal-point placement before driving the 6-digit LED display. Simultaneously, the processed value is compared against two independently configurable setpoints to actuate the dual SPDT relay outputs. If the optional RS-485 board is fitted, the current display value and setpoint status are continuously available to a Modbus RTU master (SCADA, PLC, or DCS) over a 2-wire half-duplex bus at up to 115,200 baud.
Sourcing & Quality Verification
- All units sourced directly from Red Lion Controls authorized distribution channels
- Each unit ships with original Red Lion factory packaging, datasheet, and calibration label
- Batch traceability maintained via Red Lion serial number and date code
- Pre-shipment functional verification: power-on self-test, display segment check, relay continuity
- Konmask.com maintains ISO-aligned incoming inspection records for every shipment
Procurement Process
- Confirm Specification – Verify input type, supply voltage, and communication requirements against your panel design
- Request Quote – Contact support@konmask.com for volume pricing, lead time, and export documentation
- Place Order – Purchase online or via PO; net-30 terms available for qualified accounts
- Shipping – DHL / FedEx international express; EXW Xiamen or DDP options available
- After-Sales Support – Technical assistance, datasheet library, and warranty coordination provided by Konmask engineering team
Technical FAQ
Q: Can the G310C000 accept a 4–20 mA loop-powered transmitter directly?
A: Yes. The unit provides a 24 VDC transmitter excitation supply (optional accessory) and accepts 4–20 mA at its current input terminals with a 50 Ω burden resistor.
Q: Is Modbus TCP supported?
A: The base G310C000 supports Modbus RTU over RS-485. For Ethernet/Modbus TCP, pair with a Red Lion N-Tron or Sixnet protocol converter, or specify the G3 series with built-in Ethernet.
Q: What is the panel cutout size?
A: Standard 1/8 DIN: 92 mm × 45 mm. A panel gasket for NEMA 4X sealing is included.
Q: Can two relay setpoints be configured for high-high / low-low alarm logic?
A: Yes. Each relay is independently configurable for high, low, high-high, or low-low action with adjustable hysteresis.
Q: What certifications does the G310C000 carry?
A: UL Listed, cUL, CE (EMC Directive 2014/30/EU, LVD 2014/35/EU), and RoHS 2 compliant.
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