Overview
The Dickson KT856 is a microprocessor-based 8-inch (203mm) circular chart temperature recorder engineered for remote temperature monitoring and data acquisition. This dual-channel recorder combines precision electronic sensing with user-selectable recording parameters, making it ideal for process validation, storage monitoring, and environmental compliance logging across pharmaceutical, food service, and industrial applications.
Key Features
- 2-Channel Independent Recording: Red and blue pens record simultaneously on a single 8-inch circular chart with offset positioning for easy data distinction.
- Type K Thermocouple Input: Includes 4-foot flexible bead-wire thermocouple probe rated to 2000°F maximum, suitable for gases, liquids, and semi-solids.
- High-Resolution Digital Display: 3.5-digit LCD display with 0.1°F/°C resolution for easy parameter viewing and temperature verification.
- Flexible Recording Times: User-selectable 7-day, 24-hour, or 31-day chart speeds via DIP switch configuration.
- Dual Relay Alarm Contacts: Independent minimum/maximum alarm setpoints for each channel with relay switching (AC power required for relay operation).
- DIP Switch Configurable: Temperature range, recording interval, °F/°C selection, and alarm thresholds all field-adjustable without factory service.
Technical Specifications
- Chart Diameter: 8 inches (203mm), circular
- Recording Channels: 2 independent pens (red and blue)
- Temperature Probe: Type K thermocouple, 4 feet flexible bead wire
- Temperature Accuracy: ±1.8°F (±1.0°C)
- Temperature Resolution: 1° display increment
- Display Type: 3.5-digit LCD
- Operating Temperature (Ambient): 32–120°F (0–50°C)
- Chart Speed Options: 7-day, 24-hour, 31-day (software selectable)
- Probe Maximum Rating: 2000°F
- Relay Contacts: 2 independent sets for alarm min/max
- Power Supply: AC adapter (included) or AA battery backup
- Enclosure: Durable ABS plastic, portable or wall-mountable
- Dimensions: 13.2 x 13.3 x 7 inches
- Weight: 4.84 pounds
Typical Applications
- Pharmaceutical cold chain validation and stability testing
- Refrigerated and frozen storage facility monitoring
- Food safety HACCP protocol compliance documentation
- Laboratory and clean-room environmental monitoring
- HVAC system performance verification
- Equipment temperature trending and fault detection
Compatibility & Replacements
Compatible With
- Type K thermocouple sensors and bead-wire probes
- Standard 8-inch circular chart paper (0–100°F, 0–500°F, and other temperature ranges)
- Dickson replacement pens and chart papers
- AC and battery power systems (4 AA battery backup)
- Wall or benchtop mounting
Replaces / Drop-In Replacement For
- Earlier Dickson circular chart recorders requiring 8-inch chart media
- Manual temperature logging systems in validation protocols
Works With
- Graphic Controls and compatible 8-inch circular chart paper (24-hour, 7-day, 31-day)
- Standard Type K thermocouple extension cables and connectors
- Standard AC power (110–120V) and AA battery backup power
