OM-SGD-SERIES

Supported Applications

The Omega OM-SGD Series comprises smart graphics process meters featuring color TFT displays designed for panel mounting. These devices accept voltage or current inputs to monitor and display process variables with customizable graphical interfaces. Users configure the meter via wizard-based software compatible with Windows® XP (SP3), Vista, 7, and 8, selecting from over 40 standard display configurations. The configuration allows customization of colors, text labels, input scaling, and units before uploading settings to the unit through a USB interface.

Operating Conditions & Performance

The series operates within an ambient temperature range of 0 to 40°C (32 to 104°F). Voltage input models accept two independent channels programmable from eight available ranges: 0 to 1.25 V, 0 to 2.5 V, 0 to 4 V, 0 to 5 V, 0 to 8 V, 0 to 10 V, 0 to 20 V, and 0 to 40 V. These inputs are single-ended with a shared common ground. Current input models support typical operation at 4 to 20 mA, with a minimum of 0 mA and maximum of 50 mA; loop voltage drop for these models is typically 0.4 to 2.0V (min 0V, max 5.0V).

Performance specifications include an accuracy of 0.05% typical and 0.1% max, with linearity within ±1 count max depending on user calibration settings. The display resolution varies by range from 0.3 mV to 9.8 mV for voltage inputs. The sample rate is a maximum of 3 samples/sec.

Configuration Options

The OM-SGD Series offers configurable dimensions, input types, and environmental protection levels across its model lineup:

• Display Sizes: Available in 2.4", 2.8", and 3.5" color TFT screens with a resolution of 320 x 240 pixels (16-bit color).
• Housing & Enclosure: Standard models feature panel mounting clips. Waterproof variants (OM-SGD-24-M-IP, OM-SGD-24-M-IP420) include a NEMA 6 (IP67) rating and a 32 mm mounting nut.
• Input Types: Models are designated for Voltage input (-M suffix) or Current input (-420 suffix).
• Outputs: All models provide 2 open-collector outputs capable of sinking up to 10 mA max each.
• Power Supply: Operates on 4 to 30 Vdc from an external supply or via USB connection (compatible with USB 1.0 and 2.0).

Dimensions vary by model: the OM-SGD-24-M series measures 76.5 x 46.5 x 38.0 mm (3.01 x 1.8 x 1.5 in), while waterproof versions measure 85.8 x 62.7 x 40.0 mm (3.4 x 2.5 x 1.6 in). The OM-SGD-28-M series measures 89.5 x 56.8 x 43.2 mm (3.5 x 2.2 x 1.7 in), and the OM-SGD-35-M series measures 96.0 x 78.5 x 52.7 mm (3.8 x 3.1 x 2.1 in).

Key Product Differences

The series distinguishes between standard and waterproof housings, as well as voltage versus current input capabilities:

• Voltage Input Models (OM-SGD-XX-M): Accept 0 to 40 V ranges. Electrical connections utilize screw terminals.
• Current Input Models (OM-SGD-XX-M-420): Optimized for 4 to 20 mA signals with a loop voltage drop of up to 5.0V max. Connections use screw terminals except on waterproof variants.
• Waterproof Variants (-IP Suffix): Models OM-SGD-24-M-IP and OM-SGD-24-M-IP420 feature a NEMA 6 (IP67) enclosure with a 12-way connection instead of screw terminals. These models include the mounting nut for panel installation.
• Thermocouple Compatibility: The optional OM-SGD-ADPT-TC module enables Type J, K, or T thermocouple measurement but is not compatible with waterproof models (OM-SGD-24-M-IP and OM-SGD-24-M-IP420).

Accessories include the right-angle waterproof connector cable (OM-CABLE-IP-12W-RA, 2 m length) for IP-rated units and a USB interface cable (OM-CABLE-USB-A-MF, 0.45 m type A to mini B) required for programming.