CTR Series Multifunction Timers and Counters
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A. Product Overview
The iTherm CTR Series is a range of multifunction digital instruments developed for applications where counting, RPM measurement or elapsed time measurement is required.
Instead of using separate instruments for different basic monitoring requirements, the CTR Series provides multiple functions within a compact panel-mounted instrument. This makes it suitable for machinery, production equipment, automation panels, conveyors and other industrial systems where operators need a clear digital indication of counts, speed or operating time.
The CTR Series is available in several models and sizes:
| Model | Approximate Size |
|---|---|
| CTR-33 | 36 × 72 × 79 mm |
| CTR-44 | 48 × 48 × 78 mm |
| CTR-77 | 72 × 72 × 65 mm |
| CTR-88 | 48 × 96 × 53 mm |
| CTR-99 | 96 × 96 × 53 mm |
The series supports multiple time ranges from seconds through minutes and hours, allowing the same product family to be selected for different machine and process requirements.
The CTR Series is commonly described as an all-in-one counter, timer and RPM meter, making it useful where flexibility and compact panel installation are important.
B. Working Principle
The iTherm CTR Series works by receiving an electrical pulse or contact signal from the connected machine or sensing device and processing that signal according to the selected operating function.
In Counter Mode
The instrument receives pulses generated by equipment such as a proximity switch, machine contact or other compatible pulse source. Each pulse represents an event or operation.
For example:
Sensor detects one product → pulse is generated → CTR Series receives the pulse → displayed count increases
This allows the instrument to monitor the number of products, machine cycles, rotations or other repetitive events.
In RPM Mode
The instrument receives repetitive pulses corresponding to the rotation of a shaft or machine component. It calculates the pulse frequency and displays the corresponding rotational speed.
This makes the CTR Series suitable for monitoring the speed of motors, rollers, shafts and rotating machinery.
In Time Totalizer Mode
The CTR Series measures the duration for which a process, machine or input remains active. Depending on the selected range, operating time can be measured and displayed in seconds, minutes or hours.
The CTR Series provides several programmable timing ranges, including ranges expressed in seconds, minutes and hours.
C. Why is the iTherm CTR Series Used?
The CTR Series is used when an industrial application requires reliable digital monitoring of quantity, rotational speed or operating time.
It can help users:
- Count manufactured products
Monitor the number of components, bottles, packets or other items passing through a production process. - Count machine cycles
Track repetitive operations performed by industrial machinery. - Measure RPM
Monitor the rotational speed of motors, shafts, rollers and other rotating equipment. - Measure machine running time
Record accumulated operating hours for maintenance and production monitoring. - Monitor process duration
Measure how long a machine or process has been operating. - Reduce the need for separate instruments
A multifunction instrument can simplify applications where timer, counter or RPM functionality may be required. - Provide clear digital indication
Operators can quickly check counts, speed or elapsed time directly from the control panel.
Because the CTR Series is available in several physical sizes, designers can select a model according to the available panel space and machine design.
D. Suitable Buyers
The iTherm CTR Series Multifunction Timer and Counter is suitable for:
Machine Manufacturers
OEM machine builders requiring digital counters, timers, RPM indicators or time totalizers in their machines.
Industrial Automation Companies
System integrators and automation companies designing electrical and automation control panels.
Packaging Machine Manufacturers
Suitable for applications involving product counting, cycle counting, conveyor monitoring and machine running time.
Production Industries
Manufacturing plants that need to monitor production quantities, machine cycles or equipment operating time.
Panel Builders
Electrical panel manufacturers requiring compact digital instruments for industrial machine panels.
Maintenance Departments
Maintenance teams can use time totalizing and RPM monitoring functions for equipment operation and maintenance planning.
Conveyor System Manufacturers
Useful for applications involving product counting, roller speed monitoring and repetitive movement.
Process Equipment Manufacturers
Suitable for machinery and processes requiring timer, counter or rotational speed indication.
Industrial Equipment Dealers and Distributors
Automation and instrumentation dealers looking for a multifunction digital timer and counter range covering multiple panel sizes.
Frequently Asked Questions
1. What is the iTherm CTR Series?
The iTherm CTR Series is a range of multifunction digital industrial instruments designed for applications involving counting, timing, RPM indication and time totalizing. Models include CTR-33, CTR-44, CTR-77, CTR-88 and CTR-99.
2. What functions are available in the CTR Series?
The CTR Series can be used for counter, timer, RPM indication and time totalizing applications, depending on the required configuration and application.
3. What are the available CTR Series models?
The available models are:
CTR-33, CTR-44, CTR-77, CTR-88 and CTR-99.
4. What is the difference between CTR-33, CTR-44, CTR-77, CTR-88 and CTR-99?
A major difference is their physical panel size and format. This allows users to select a model that fits their machine panel or electrical control panel requirements.
CTR-33 is approximately 36 × 72 mm, CTR-44 is 48 × 48 mm, CTR-77 is 72 × 72 mm, CTR-88 is 48 × 96 mm and CTR-99 is 96 × 96 mm.
5. Can the CTR Series be used as an RPM meter?
Yes. The CTR Series can be used for RPM indication where a suitable pulse signal is provided from the rotating equipment or sensing arrangement.
6. Can the CTR Series be used for production counting?
Yes. It can be used to count products, machine cycles or repetitive events when appropriate pulse signals are provided to the counter input.
7. Can the CTR Series measure machine operating time?
Yes. Its time totalizing functionality can be used to measure accumulated machine or process operating time.
8. What timing ranges are available?
The CTR Series supports multiple programmable ranges covering seconds, minutes and hours. The iTherm technical information lists several ranges extending from fine second-based measurements to accumulated hour-based measurements.
9. Where is the CTR Series normally installed?
The CTR Series is designed as a panel instrument and can be installed in industrial machine panels, electrical control panels, automation panels and process equipment.
10. Is the CTR Series suitable for OEM machines?
Yes. The multiple functions and different panel sizes make the CTR Series particularly suitable for OEM machinery where counting, RPM indication or time measurement is required.
11. Which CTR Series model should I select?
Selection should primarily depend on the required function, panel cutout or instrument size, input arrangement and application requirements. CTR-33, CTR-44, CTR-77, CTR-88 and CTR-99 provide different physical formats within the CTR Series.
12. What applications can use a CTR Series multifunction counter?
Typical applications include production counting, conveyor counting, machine cycle counting, motor RPM monitoring, roller speed monitoring, machine running-hour measurement, packaging machinery and industrial automation panels.