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Dwyer Temperature Controller: 4B, 1/4 DIN Size, RTD/Thermocouple, Manual/On/Off Action/PID - Temperature Controllers
DwyerTemperature Controllers

Dwyer Temperature Controller: 4B, 1/4 DIN Size, RTD/Thermocouple, Manual/On/Off Action/PID

The Dwyer 4B Temperature Controller (MPN 4B-33) is a 1/4 DIN digital PID controller with a thermocouple sensor input and two relay outputs rated at 5 A. It operates on 100 to 240V AC input voltage and features a…

SKU 3G-OTH-361478

Brand
Dwyer
Item
Temperature Controller: 4B, 1/4 DIN Size, RTD/Thermocouple, Manual/On/Off Action/PID
Category
Temperature Controllers
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Technical Specifications

Dwyer
Manufacturer Part Number
4B-33
Series
4B
Type
RTD/Thermocouple, Manual/On/Off Action/PID, Digital
Output
(2) Relay
Current
5 A
DIN Size
1/4
Sensor Type
Thermocouple
Control Mode
PID
Display Type
Digital
Product Type
Temperature Controller
Input Voltage
100 to 240V AC
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Dwyer Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Dwyer 4B Temperature Controller (MPN 4B-33) is a 1/4 DIN digital PID controller with a thermocouple sensor input and two relay outputs rated at 5 A. It operates on 100 to 240V AC input voltage and features a digital display.

Used in

Common applications for Dwyer
Combustion air-filter monitoring — Magnehelic Series 2000 on burner air-intake filter banks
Clean-room and pharmaceutical pressurisation — Magnehelic / Capsuhelic differential-pressure gauges
HVAC fan-discharge static pressure — Mark II inclined-vertical manometers on AHU test points
Filter-blockage alarms — Photohelic Series 3000 combined gauge/switch on air-handling units
BMS-integrated pressure monitoring — Digihelic DH3 with 4–20 mA output for building management

Dwyer Products

3G Electric supplies Dwyer temperature controllers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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