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Clean Room & Plant Wide Time Synchronization

Digital GPS Synchronized Clocks

Digital GPS synchronized clocks use a master slave configuration to display identical, GPS accurate time across every clock in a facility. The master GPS clock takes time directly from the Global Positioning Satellite network, accurate to within 500 milliseconds, and transmits that time to all connected slave clocks over Wireless RF, wired RS485 or PoE communication. Built for pharmaceutical clean rooms and any facility that needs one accurate time reference across multiple rooms or buildings.

GPS time, accurate to 500 ms Wireless RF, RS485 & PoE options Super bright red LED displays
GPS-synchronized master clock wirelessly connected to a slave clock over RS485
AI-GPS-W-M2 master · AI-CL series slaves

Salient Features

Why Ace GPS synchronized clocks suit regulated, multi room facilities.

  • GPS master clock takes time directly from satellite signals, accurate to within 500 milliseconds, independent of any server or network time source
  • Master slave synchronization over wired RS485 communication, so every slave clock on the line displays the same time as the master
  • No manual time setting required across the facility, the master clock distributes GPS time automatically to every connected slave
  • Multiple slave display options, from a compact 1 inch format for smaller rooms to a 4 inch high display for corridors and larger spaces
  • Super bright red 7 segment LED displays for clear visibility under clean room lighting conditions
  • HH:MM:SS display format as standard, with an HH:MM only option available on the 1 inch slave display
  • Simple wired network architecture that avoids the time drift and manual resets associated with independent, standalone clocks
Super bright red LED display options across AI-CL1, AI-CL2, and AI-CL4 slave clocks

Communication Options

Choose how the GPS master clock connects to its slave clocks to suit your facility layout.

Wireless RF

Slave clocks receive GPS time from the master over a wireless RF link, which suits retrofit installations and areas where running cable is difficult.

Wired RS485

Master slave synchronization over a wired RS485 line, a reliable multidrop network that keeps every connected slave on the same time as the master.

PoE (Power over Ethernet)

Power and time data delivered to the clock over a single Ethernet cable, which simplifies wiring and installation.

Available Models

One GPS master clock drives any mix of slave clock sizes.

PhotoModelTypeDisplay
AI-GPS-W-M2 wireless GPS master clock
AI-GPS-W-M2Master GPS Clock6 digit, 2.5" high, super bright red LED display, HH:MM:SS format.
AI-CL1 clean room slave clock
AI-CL1Slave Clock4 digit, 1" high display, HH:MM format (optional 6 digit HH:MM:SS).
AI-CL2 wireless slave clock
AI-CL2Slave Clock6 digit, 2.5" high display, HH:MM:SS format.
AI-CL4 slave clock
AI-CL4Slave Clock4" high HH:MM digits with 2.5" high seconds digits.
AI-GPS-W-M2 wireless GPS master clock
Master GPS Clock

AI-GPS-W-M2

6 digit, 2.5" high, super bright red LED display, HH:MM:SS format.

AI-CL1 clean room slave clock
Slave Clock

AI-CL1

4 digit, 1" high display, HH:MM format (optional 6 digit HH:MM:SS).

AI-CL2 wireless slave clock
Slave Clock

AI-CL2

6 digit, 2.5" high display, HH:MM:SS format.

AI-CL4 slave clock
Slave Clock

AI-CL4

4" high HH:MM digits with 2.5" high seconds digits.

Applications

Ace GPS synchronized clocks built for critical environments: cleanrooms, hospitals, laboratories, data centers, and pharmaceutical manufacturing

One time reference, every room

A single master GPS clock keeps production, QC, utility and common areas on the same time, without manual resetting and without relying on a server or internet connection.

Specifications

ParameterDetails
Communication optionsWireless RF, Wired RS485, PoE (Power over Ethernet)
Display Master GPS Clock (AI-GPS-W-M2)6 digits, 2.5" high, 7 segment super bright red LED display for hours, minutes & seconds, format HH:MM:SS
Display (AI-CL1)4 digits, 1" high, 7 segment super bright red LED display for hours & minutes, format HH:MM. Optional 6 digits, 1" high, 7 segment super bright red LED display for hours, minutes & seconds, format HH:MM:SS
Display (AI-CL4)6 digits, 4" high, 7 segment super bright red LED display for hours & minutes, seconds in 2" high size, format HH:MM:SS

Compliance & Certifications

Frequently Asked Questions

What are Digital GPS Synchronized Clocks?

Digital GPS Synchronized Clocks are a master-slave clock system designed to maintain the same accurate time across multiple locations. A GPS Master Clock receives time from GPS satellites and distributes the synchronized time to connected Slave Clocks through wired RS485 communication. ACE Instruments specifically offers this system for applications such as pharmaceutical cleanrooms where uniform time across the facility is important.

Why is GPS synchronization useful for industrial facilities?

GPS synchronization provides a common time reference for multiple clocks installed across a facility. This helps different departments, production areas, laboratories, and utility areas operate with the same displayed time without manually adjusting individual clocks.

How does the GPS Master Clock synchronize the slave clocks?

The AI-GPS-W-M2 Master Clock receives accurate time from GPS satellites and transmits the synchronized time to Slave Clocks through RS485 communication. All connected slave clocks therefore display the same time throughout the network.

How accurate is the GPS synchronized clock system?

The GPS Master Clock has an accuracy of approximately 500 milliseconds according to the product information. The GPS-based system provides a common time reference across the connected clock network.

Can the same system synchronize clocks across an entire pharmaceutical plant?

Yes. The master-slave architecture allows a single GPS Master Clock to provide synchronized time to multiple display clocks installed at different locations. This makes it suitable for large facilities where production areas, laboratories, corridors, and other departments need a common time reference.

What is the AI-GPS-W-M2 Master GPS Clock?

The AI-GPS-W-M2 is the Display Master GPS Clock used as the primary time source in the system. It features a 6-digit, 2.5-inch high, super-bright red LED display and displays hours, minutes, and seconds in HH:MM:SS format.

What slave clock display sizes are available?

The system can be configured with different display sizes depending on viewing distance and application requirements. Available models include the AI-CL1 with a 1-inch high LED display, AI-CL2 with a 2.5-inch high LED display, and AI-CL4 with a 4-inch high hour and minute display with smaller seconds digits. The display format and size can therefore be selected according to the installation area.

Can the clocks display seconds?

Yes. The GPS Master Clock and the AI-CL2 display hours, minutes, and seconds in HH:MM:SS format. The AI-CL1 and AI-CL4 configurations are also available with seconds depending on the selected configuration.

Can the system be used in cleanroom environments?

Yes. The GPS synchronized clock system is specifically designed for pharmaceutical cleanrooms and can be installed as part of a cleanroom's facility monitoring and time display infrastructure.

How does synchronized time help pharmaceutical manufacturing?

A common time reference helps coordinate manufacturing activities, laboratory operations, shift changes, maintenance activities, and facility operations. It can also reduce discrepancies when operators record events or compare activities occurring in different areas of the plant.

What communication method is used between the Master and Slave Clocks?

The GPS Master Clock and Slave Clocks can communicate over Wireless RF, wired RS485, or PoE (Power over Ethernet), depending on the installation. Wired RS485 provides a dedicated communication network for distributing the synchronized time throughout the facility.

Can the system be customized for different facility requirements?

Yes. Different display models and sizes can be selected depending on the application. The system can therefore be configured for areas requiring compact displays as well as locations where larger, highly visible time displays are needed.

What happens if the GPS signal is temporarily unavailable?

The system can continue timekeeping using its internal clock. The detailed product specification states that, in the absence of a GPS signal, the standalone accuracy is approximately ±60 seconds per year.

Where are Digital GPS Synchronized Clocks commonly used?

Typical applications include pharmaceutical manufacturing plants, pharmaceutical cleanrooms, bulk drug facilities, hospitals, laboratories, production facilities, research facilities, large industrial plants, and other facilities requiring a common time reference.

What are the advantages of using Digital GPS Synchronized Clocks?

Key benefits include common time across multiple locations, GPS-based time synchronization, master-slave architecture, RS485 communication, multiple display size options, bright LED time display, suitability for pharmaceutical cleanroom environments, reduced need for manual clock adjustment, and a scalable facility-wide time display system.

Who typically uses Digital GPS Synchronized Clocks?

These systems are particularly useful for pharmaceutical manufacturers, cleanroom operators, facility managers, production managers, HVAC and facility engineering teams, system integrators, EPC contractors, industrial automation teams, and hospital facility managers.

What is the difference between a GPS synchronized clock and a standalone clock?

A standalone clock operates independently and is manually programmed. A GPS synchronized clock receives its time from a GPS Master Clock and distributes the same time to multiple slave displays. If a facility requires several clocks to show exactly the same time, a GPS synchronized system is more suitable than individual standalone clocks.

How do I choose the right Digital GPS Synchronized Clock?

Selection depends on the number of locations requiring synchronized time, required viewing distance, display size, HH:MM or HH:MM:SS format, installation environment, and communication requirements. ACE Instruments can help configure the appropriate Master and Slave Clock combination for pharmaceutical plants, cleanrooms, hospitals, laboratories, and other facilities requiring a reliable centralized time synchronization system.

Need facility wide time synchronization?

Talk to Ace Instruments about the right Master and Slave Clock combination for your plant.

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