Series 4B 1/4 DIN Temperature/Process Controller
Brand: Dwyer Instruments, LLCThe Series 4B 1/4 DIN Temperature/Process Controller is designed to accept thermocouple, RTD, current or voltage input and provide dual outputs for control.
Available outputs include relay/relay, voltage pulse/relay, current/relay, or linear voltage/relay.
The units can be programmed for ON/OFF, PID, auto-tuning, or manual tuning control methods.
The PID control is supported by 64 ramp/soak actions. The Series 4B also includes two additional alarm outputs. The second relay output can be reconfigured as a third alarm output. The alarm type can be selected from 13 different preprogrammed alarm functions. 
The controller features dual LED displays for local indication of process and setpoint values.
Features- Universal Input accepts Process Transmitters, RTD’s or Thermocouple Signals
 - On/Off, PID, or Manual Output Control
 - RS-485 Standard on all Models
 - Stage Control Program for up to 64 Ramp/Soak Actions
 
Specifications
Accuracy
- ± 0.25 % of Span, ± 1 Least Significant Digit
 
Approvals & Certifications
- CE
 - cUL
 - RoHS
 - UL
 
Communication
- Mini-Node USB/RS-485 Converter
 - RS-485 Modbus A-5-11 / RTU Communication Protocol
 
Configuration
- Software Only
 
Consumption
- 5 VA, Max.
 
Display
- 1/2" High (12.7 mm) Green LED
 - 3/4" High (19 mm) Red LED
 - 7-Segment
 - Two 4-Digit LED
 
Environmental Protection
- IP56
 - Weatherproof
 
Input
- 0-10 V
 - 0-20 mA
 - 0-5 V
 - 0-50 mV
 - 4-20 mA
 - DC Current
 - DC Voltages
 - RTDs
 - Thermocouples
 
Mounting
- Front Mounting
 
Operating Temperature
- 0° to 50° C (32° to 122° F)
 
Output
- 0-10 V - Linear Voltage
 - 14 V, 10 % to -20 % - Voltage Pulse
 - 4-20 mA - Current
 
PID Configuration
- With PID
 
Supply Voltage
- 100-240 Vac
 - 24 Vdc
 - 50/60 Hz
 
Switch Type
- SPDT, 5 A at 250 Vac Resistive - Relay
 
Temperature Range
- -200° to 1800° C (-328° to 3272° F)
 
- Control temperature for boilers, damper control based on temperature or pressure
 - Hot plates/melt pots
 - Packaging equipment
 - Environmental chambers
 - Medical equipment.
 - Food service equipment.