Betterbeita Digital Time Thermostat User Manual

Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your Digital Time Thermostat. Please read this manual thoroughly before using the device to ensure safe and efficient operation.

Package Contents:

1 x Temperature Controller
1 x English Operation Manual

Note: This package includes only the thermostat and its manual. Other products shown in diagrams (e.g., SSR, heater, thermocouple) are not included unless specified separately.

Specifications

Feature	Specification
Power Supply	100-240V AC
Output	220V AC, DC voltage output for SSR
Temperature Range	-50 to 1372 ℃
Compatible Thermocouple Types	K, E, J, N type
Dimensions (H x W x D)	48x48x80mm, 48x96x80mm, 72x72x80mm, 96x96x80mm (depending on model)
Mounting Hole Cutout Size	45x45mm, 45x92mm, 68x68mm, 92x92mm (depending on model)
Timer Function	0-9999 seconds

Product Overview

The Digital Time Thermostat is available in various sizes to suit different installation requirements. Each model features a clear digital display for Process Value (PV) and Set Value (SV), along with indicators for output (OUT), auto-tuning (AT), alarm (ALM), and timer (TIME).

Front view of Betterbeita Digital Time Thermostats in various sizes — Figure 1: Front view of the Digital Time Thermostat models (CJA-9000, CJE-9000, CJD-9000, CJS-9000) showing their displays and controls.

Side view of Betterbeita Digital Time Thermostats with dimensions — Figure 2: Side view of the thermostat models illustrating their physical dimensions (48x48mm, 48x96mm, 72x72mm, 96x96mm).

Setup and Wiring

Proper wiring is crucial for the safe and correct operation of the thermostat. Refer to the diagrams below for connection details. Ensure all power is disconnected before performing any wiring.

Rear view of thermostat showing terminal connections — Figure 3: Rear view of the thermostat unit displaying the numbered terminal block.

Rear view of thermostat with English labels for terminal connections — Figure 4: Labeled terminal connections on the rear of the thermostat. Connections include SSR output, 220VAC output, 100-240VAC input, and thermocouple input.

Wiring with an SSR (Solid State Relay):

When controlling a heater or other load via an SSR, connect the thermostat's SSR output to the input of the SSR. The SSR then controls the power to the heater.

Wiring diagram for thermostat with SSR, heater, and thermocouple — Figure 5: Wiring diagram showing connections for the thermostat, an external SSR, a heater, and a thermocouple. The 100-240VAC power input connects to the thermostat and the SSR. The SSR output connects to the heater, and the thermocouple connects to the thermostat's sensor input.

Direct Wiring with Heater (220VAC, < 3.0kW):

For direct control of a 220VAC heater with power less than 3.0kW, connect the heater directly to the thermostat's 220VAC output terminals. It is recommended to include a fuse for safety.

Wiring diagram for thermostat directly to heater and thermocouple — Figure 6: Wiring diagram showing direct connections for the thermostat, a 220VAC heater (with fuse), and a thermocouple. The 100-240VAC power input connects to the thermostat, and the thermostat's 220VAC output connects to the heater.

Operating Instructions

The thermostat features two primary working modes, selectable by the user. These modes dictate how the heating and timing functions interact.

Working Principles:

Mode 1: Time-Controlled Heating
When powered on, the thermostat immediately begins counting time and initiates heating. Heating stops once the set time duration has elapsed. This mode is suitable for applications where a precise heating duration is required, regardless of reaching a specific temperature. For example, sealing a packing bag on a heater for a set number of seconds.
Mode 2 (Default): Temperature-Controlled Timing with Alarm
When powered on, the thermostat begins heating. Once the measured temperature reaches the set temperature value, the timer starts counting. When the set time duration runs out, an alarm buzzer in the controller will sound to alert the user. This mode is ideal for processes requiring a specific temperature to be maintained for a set period. For example, drying materials at 70℃ for 10 minutes.

How to Use (Example for Mode 2):

Consider the scenario: drying materials at 70℃ for 10 minutes.

Connect a heater to the temperature controller as per the wiring diagrams (either directly or via an SSR).
Set the desired temperature value to 70℃ on the controller.
Set the desired time value to 10 minutes (or 600 seconds) on the controller.
When the system is powered on, the controller will activate the heater.
The controller will use PID control to maintain the temperature at 70℃.
Once the temperature reaches 70℃, the internal timer will begin counting down from 10 minutes.
After 10 minutes, the alarm buzzer will sound to notify the user that the process is complete.

The duration of the alarm sound can also be configured by the user within the controller settings.

Maintenance

To ensure the longevity and accurate performance of your Digital Time Thermostat, follow these general maintenance guidelines:

Keep the device clean and free from dust and debris. Use a soft, dry cloth for cleaning.
Ensure proper ventilation around the unit to prevent overheating.
Regularly check all wiring connections for tightness and signs of wear or corrosion.
Avoid exposing the thermostat to excessive moisture, extreme temperatures, or corrosive environments.
If the device is not functioning correctly, refer to the troubleshooting section or consult a qualified technician.

Troubleshooting

If you encounter issues with your thermostat, consider the following common troubleshooting steps:

No Power: Check the power supply connections (100-240VAC input) and ensure the power source is active.
Incorrect Temperature Reading: Verify that the thermocouple is correctly connected to the designated terminals and that it is the correct type (K, E, J, N) for your application. Ensure the thermocouple is properly inserted into the environment being measured.
No Heating Output: Check the wiring to the heater or SSR. If using an SSR, ensure it is functioning correctly and its input is receiving the signal from the thermostat. Verify that the set temperature is above the current temperature (in heating mode) and that the timer settings allow for heating.
Timer Not Functioning: Ensure the correct working mode is selected. In Mode 2, the timer will only start after the set temperature is reached. Check the timer settings for correct duration.
Alarm Not Sounding: Verify alarm settings and ensure the alarm duration is not set to zero.

For persistent issues, consult the full English operation manual included in your package or contact customer support.

User Tips

While specific user feedback is not available, here are some general tips for optimizing your experience with the Digital Time Thermostat:

Understand Your Application: Clearly define whether your process requires heating for a fixed duration (Mode 1) or maintaining a temperature for a fixed duration (Mode 2) before configuring the thermostat.
Thermocouple Placement: For accurate temperature control, ensure the thermocouple is placed in a location that provides a representative reading of the process temperature.
Safety First: Always double-check wiring before applying power. If you are unsure about electrical connections, consult a qualified electrician.
Experiment with Settings: For critical applications, perform initial tests with non-critical materials to fine-tune temperature and timer settings.

Warranty and Support

This product is covered by the standard manufacturer's warranty. Please refer to the warranty information provided with your purchase for details on coverage and duration.

For technical support, questions, or service inquiries, please contact the seller or manufacturer directly. Keep your purchase receipt and product model information handy when contacting support.

Betterbeita Digital Time Thermostat (CJA-9000, CJE-9000, CJD-9000, CJS-9000 series)