Dwyer Instruments 25122 Temperature Controller
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Dwyer Instruments 25122 temperature controller with thermocouple or RTD input, alarm, and precise ±0.25% span accuracy for industrial temperature management.
Product details
| Model | 25122 |
| Manufacturer | Dwyer Instruments |
| Category | Process Instruments |
| Availability | Made to order |
Description
Overview
The Dwyer Instruments 25122 is a microprocessor-based temperature controller engineered for precision process control in industrial applications. It accepts input from thermocouples or resistance temperature detectors (RTDs) and delivers reliable temperature management with ±0.25% of span accuracy. The unit features dual 4-digit display, non-volatile memory backup, and configurable control actions for both heating and cooling applications in diverse industrial environments.
Key Features
- Accepts Thermocouple (3 MΩ minimum impedance) or RTD (200 µA maximum) input
- Dual 4-digit LED display (0.56" height) with temperature and setpoint indication
- Selectable resolution: 1°F or 0.1°F increments
- High accuracy: ±0.25% of span, ±1°F
- Alarm function for temperature limit protection
- Selectable control action for reverse (heating) or direct (cooling) operation
- Adjustable ramp time from 0 to 100 hours
- Supply voltage: 100-240 VAC or 132-240 VDC ±10%
- Low power consumption: 5 VA maximum
- Non-volatile memory retains settings without battery backup
- NEMA 4X (IP65) front panel rating for harsh environments
Applications
- Industrial process temperature regulation
- Oven, furnace, and chamber control
- Precision temperature monitoring systems
- HVAC and climate control equipment
- Equipment thermal protection systems
Specifications
| Input Type | Thermocouple or RTD |
| Accuracy | ±0.25% of span, ±1°F |
| Display | Two 4-digit LED, 0.56" height |
| Resolution | 1°F or 0.1°F selectable |
| Input Impedance (Thermocouple) | 3 MΩ minimum |
| Input Impedance (RTD) | 200 µA maximum |
| Supply Voltage | 100-240 VAC or 132-240 VDC ±10% |
| Power Consumption | 5 VA maximum |
| Operating Temperature | -10 to 55°C (14 to 131°F) |
| Control Action | Selectable reverse (heating) or direct (cooling) |
| Ramp Time | 0-100 hours adjustable |
| Memory | Non-volatile, no batteries required |
| Front Panel Rating | NEMA 4X (IP65) |
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Dwyer Instruments 25122 Temperature Controller
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