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3204-71001
3204-71001
3204-71001

Chromalox 3204-71001 1/32 DIN Temperature Controller Module

  • Model: 3204-71001
  • Brand: Chromalox
  • Series: 3204 Series 1/32 DIN Temperature & Process Controllers
  • Core Function: Regulates thermal loops in industrial heating processes using autotuning PID control logic to drive solid-state relays (SSRs), contactors, or control valves.
  • Product Type: Compact 1/32 DIN Digital PID Temperature Controller
  • Key Specs: 100 to 240V AC Supply Voltage | Universal Thermocouple/RTD Sensor Input | SSR Driver Output | Compact 1/32 DIN Panel Cutout (48mm x 24mm) | Clear LED Dual Display
  • Condition: New Original / New Surplus (Zero operational hours, factory sealed)
  • Inventory Status: Essential thermal process control component; critical spare part for plastics extrusion, packaging equipment, industrial ovens, and heat tracing systems.
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Description

3. Key Technical Specifications

Parameter Specification Value
Catalog Part Number 3204-71001
Manufacturer Chromalox
Form Factor / Size 1/32 DIN (48 mm x 24 mm front bezel)
Supply Voltage 100 to 240V AC (50/60 Hz)
Input Sensor Compatibility Universal Input: Thermocouples (J, K, T, R, S, B, N) & RTD (Pt100)
Primary Control Output SSR Driver / Logic Voltage Output (12V DC for driving external SSR)
Secondary Alarm Outputs Configurable Relay / Alarm Output
Control Algorithms Self-Tuning PID, Manual Tune, or On/Off control action
Display Type High-visibility dual 4-digit LED display (Process Value & Setpoint Value)
Front Panel Rating NEMA 4X / IP65 water & dust resistant sealing

4. Product Introduction & Supply Chain Strategy

The Chromalox 3204-71001 is an ultra-compact 1/32 DIN digital temperature controller designed for space-critical panel installations requiring accurate thermal management. Featuring universal sensor input options and adaptive autotuning PID algorithms, the 3204-71001 eliminates thermal overshoot and stabilizes process temperatures in demanding industrial heating loops.

This unit is a Brand New Surplus item. It is not used, not pulled from decommissioned machinery, and not refurbished. All internal circuitry, terminal blocks, and front-panel button membranes undergo complete electrical inspection prior to shipping.

In continuous thermal manufacturing—such as plastic injection molding, heat sealing, and thermal processing ovens—a failed temperature controller stops production entirely or damages sensitive raw materials. Sourcing verified New Surplus Chromalox 3204-71001 modules enables immediate drop-in replacement without re-engineering control panel cutouts or waiting on extended factory production lead times.

5. Installation & Configuration Guide

High Voltage Electrical Hazard

Isolate main AC line power before mounting or wiring the 3204-71001 controller. Ensure wiring conforms to National Electrical Code (NEC) standards and proper sensor polarity is maintained.

1

Panel Cutout & Preparation

Prerequisite

1.Panel Cutout & Preparation:Prerequisite.

Prepare a standard 1/32 DIN panel cutout (45 mm x 22.2 mm). Ensure the panel gasket is properly positioned behind the front bezel to maintain IP65/NEMA 4X environmental sealing.

2

Controller Panel Insertion

Mounting

2.Controller Panel Insertion:Mounting.

Slide the 3204-71001 chassis through the front panel cutout. Push the mounting collar over the rear of the housing until the side ratchet teeth lock firmly against the panel wall.

3

Sensor & Power Connections

Wiring

3.Sensor & Power Connections:Wiring.

Connect 100–240V AC operating power to power terminals. Attach thermocouple or RTD sensor leads to dedicated input terminals (observing red/white polarity for thermocouples). Connect SSR driver output terminals to the control input of your solid-state relay.

4

Input Type & Autotune Setup

Configuration

4.Input Type & Autotune Setup:Configuration.

Apply power and enter the configuration menu. Select your connected sensor type (e.g., Type K or Pt100) and set the desired setpoint temperature. Trigger the Auto-Tune routine to allow the controller to automatically calculate ideal Gain (P), Reset (I), and Rate (D) parameters.

5

Loop Operation Check

Verification

5.Loop Operation Check:Verification.

Verify the SSR output LED pulses smoothly as the system approaches setpoint and confirm stable process temperature without oscillation.

6. System Configuration & Maintenance Notes

The Chromalox 3204-71001 integrates easily into standard thermal control panels:

  • SSR Output Drive: Provides a 12V DC pulsed signal designed to switch standard DC-input solid-state relays directly.
  • Sensor Shielding: Route thermocouple and RTD wiring in separate conduits away from high-current AC heater loads to prevent electrical noise interference.
  • Front Panel Seal: The IP65 NEMA 4X front bezel can be wiped down during standard enclosure washdown maintenance.
3204-71001

3204-71001

3204-71001

3204-71001

7. Frequently Asked Questions (FAQ)

Q: Is this Chromalox 3204-71001 unit brand new or refurbished?

A: This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned plant, and not refurbished. All internal electronics undergo complete diagnostic testing.

Q: What sensor types can be connected to the 3204-71001?

A: It features a universal input accepting standard thermocouples (Type J, K, T, R, S, etc.) and 3-wire Pt100 RTD sensors, selectable via the front configuration menu.

Q: What are the panel mounting dimensions for a 1/32 DIN controller?

A: The front bezel measures 48 mm x 24 mm, and it fits into a standard 1/32 DIN panel cutout of approximately 45 mm x 22.2 mm.

Q: What warranty applies to this New Surplus process controller?

A: We supply this module with a full 1-year functional replacement warranty from the date of shipment to ensure complete operational confidence.

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