---
title: 3508 Programmable Controller
url: https://opti-tech.ca/product/3508-programmable-controller/
date: 2025-08-07T00:26:35+00:00
modified: 2025-08-11T20:11:35+00:00
lang: en_CA
---

# 3508 Programmable Controller

**The 3508P1** controller provides programmable temperature control using up to 20 segments. Each segment may be defined as a ramp a step or a dwell.

**The 3508P10** controller has all of the functionality of the 3508P1 with the additional capability of being able to store up to 10 programs with 50 segments per program.

**The 3508P25** controller has all of the functionality of the 3508P1 with the additional capability of being able to store up to 25 programs with a total of 500 segments and a maximum of 50 segments per program.

Standard features

- Multiple line numeric and alphamumeric display
- Navigation via 4 push button controls
- Simultaneous display of set-point and actual temperatures
- High and low temperature alarms
- Clear display of the active program segment and type
- The controller is a panel mounted device with a clear LED display

Options (*specify these at time of order*)

- Optional over-temperature protection through addition of a secondary controller
- Optional communications via RS232 or RS485
- Optional cascade (load-sensor) temperature control
- Optional control of accessory devices such as solenoid valves or door locks via event outputs

3508 Programmable Controller

Technical Specifications

3508 P1 Programmable Controller

| Control technology | PID programmable controller able to store and recall 1 program |
| --- | --- |
| Basic functions | A single program with up to 20 segments each of which may be a ramp, step or dwell |
| Additional functions | Gain scheduling (matching PID term to set-point) |
| Control | 4 navigation buttons |
| Alarms | High-low deviation, sensor break, event or element failure |
| Communications | Optional RS232 or RS485 |
| Dimensions H x W (mm) | 92 x 45 (1/8 DIN) |
| Configuration | Panel mounted |

3508 P10 Programmable Controller

| Control technology | PID programmable controller able to store and recall up to 10 programs |
| --- | --- |
| Basic functions | 10 programs with up to 50 segments per program each of which may be a ramp, step or dwell |
| Additional functions | Gain scheduling (matching PID term to set-point) |
| Control | 4 navigation buttons |
| Alarms | High-low deviation, sensor break, event or element failure |
| Communications | Optional RS232 or RS485 |
| Dimensions H x W (mm) | 92 x 45 (1/8 DIN) |
| Configuration | Panel mounted |

3508 P25 Programmable Controller

| Control technology | PID programmable controller able to store and recall up to 25 programs |
| --- | --- |
| Basic functions | 25 programs with a total of 500 segments and a maximum of 50 segments per program each of which may be a ramp, step or dwell |
| Additional functions | Gain scheduling (matching PID term to set-point) |
| Control | 4 navigation buttons |
| Alarms | High-low deviation, sensor break, event or element failure |
| Communications | Optional RS232 or RS485 |
| Dimensions H x W (mm) | 92 x 45 (1/8 DIN) |
| Configuration | Panel mounted |

Content may be subject to modifications or corrections