HC-HUMID-CARDS

Supported Applications

The Omega HC series Reversible Humidity Indicating Cards provide a low-cost method for indicating humidity conditions in various types of barrier packaging. The product overview explicitly identifies use cases including Mil Spec (MIL-I-8835) applications.

Operating Conditions & Performance

The cards feature color-changing indicators that shift from blue to pink to signal specific humidity levels and desiccant status. Specific performance thresholds are defined by the selected model range:

• Humidity Ranges: 10 to 30% RH, 30 to 50% RH, 10 to 40% RH, 10 to 60% RH, and a specific threshold at 8% RH.
• Compliance: The HC-30/50 model (30%-40%-50% range) complies with MS 20003-2.

The cards are reversible, allowing for repeated use to monitor conditions. No explicit data on accuracy class, response time, or ambient temperature operating limits is provided in the source documentation beyond the humidity ranges listed above.

Configuration Options

The series offers five distinct configurations differentiated by measurement range and package quantity. Each variant includes specific card dimensions tailored to its model:

• HC-10/30-125: 10 to 30% RH, Quantity of 125 cards, Dimensions: 79 x 51 mm (3.125 x 2").
• HC-30/50-125: 30 to 50% RH, Quantity of 125 cards, Dimensions: 79 x 51 mm (3.125 x 2").
• HC-10/40-100: 10 to 40% RH, Quantity of 100 cards, Dimensions: 79 x 51 mm (3.125 x 2").
• HC-10/60-200: 10 to 60% RH, Quantity of 200 cards, Dimensions: 116 x 38 mm (4.56 x 1 1/2").
• HC-8-500: 8% RH threshold, Quantity of 500 cards, Dimensions: 56 x 38 mm (2.19 x 1 1/2").

The model number guide follows the format HC-<Range>-<Quantity>, for example: HC-10/30-125.

Key Product Differences

Variants within the series differ primarily by their humidity detection range and physical dimensions. The 8% RH model (HC-8) is distinct in its lower threshold and smaller card size compared to the broader-range models. Packaging quantities vary from 100 to 500 cards per package depending on the specific humidity range selected.

Operational notes provided for all variants include: discard if circles overrun, avoid metal contact, examine items if pink, change desiccant if pink, and read at lavender between pink and blue. Desiccant is considered active if the spot matches the panel or is a darker shade of Blue.