Edgewise Bar Graph Meters

Otek offers a large selection of Edgewise Digital Bargraph Panel Meters that come in many industry standard sizes.  All offer a 51 segment bargraph and 4 or more digits to accurately display your process variable(s). 

As well as being displays, many bargraphs offer serial I/O, Relay and DAC outputs as well as signal conditioning networks to accept a variety of inputs such as current, voltage, thermocouple and RTD.

THIS PRODUCT SCHEDULED FOR DISCONTINUATION BASED ON THE AVAILABILITY OF PARTS.  CLICK HERE FOR DETAILS OR SEE MODEL NTM-9 AS A REPLACEMENT.

The EBD (LED Bargraph Display) is a 4-digit, automatic tricolor bargraph, edgewise digital panel meter. The bargraph display allows for quick, customizable process monitoring, with easy-to-read limit markings and great visibility in a popular 6" form factor. The LED digital display provides the precision required for critical operations. Input signal types range from 4-20mA current loops to RTD temperature-sensing to strain-gages—almost any type of sensor signal can be used! The meter can be powered externally with both AC and DC voltages and is configured with a user-friendly command set over any RS-232, RS-385, or USB network. It can function as a programmable controller, with 4 relays and a DAC for voltage or 4-20mA current loop transmission. Let the EBD be the digital gauge for your system today!

THIS PRODUCT SCHEDULED FOR DISCONTINUATION BASED ON THE AVAILABILITY OF PARTS.  CLICK HERE FOR DETAILS OR SEE MODEL NTM-4 AS A REPLACEMENT.

The HI-Q 114 is Otek’s tallest bar graph display meter, designed to replace obsolete analog edgewise bar graphs. It is part of Otek’s line of versatile programmable process controllers that are extremely adaptable and can be customized or programmed uniquely to a variety of process control systems and applications. Input linearization including polynomials, X-Y tables (TC & RTD), flow calculations, and a variety of other mathematical functions make this digital panel meter an ideal tool for process monitoring and automation. With an interchangeable faceplate the bar graph can be customized to display a wide range of variables and scales, including watts, volts, amps, RPM, percent or any sensor output. The HI-Q114 brings color to the instrument panel or control room with a 51-segment LED display that allows range based control of the color displayed. The automatic tri color bar changes color upon exceeding programmable limits, the standard settings are red for very low (or high), yellow for caution, and green for normal range, which complies with HMI and NUREG 0800.  A 4-digit LED segment display complements the bar graph for high precision and easy interaction.  The HI-Q114 is available with 1, 2 or 3 analog inputs, and with analog outputs, up to six 10 A relays or up to eight Open Collector Transistors. All settings are accessible over the meter’s serial port. Its ability to transmit readings makes this digital panel meter ideal for integration with DCS, SCADA and other control system applications. This instrument is fitted with screw terminal connectors for all analog I/O, a DB-9 connector for the serial connection option and is compatible with USB 2.0 via a converter (USB-232). The HI-Q114 bar graph display meter is HMI/MMI qualified and compliant with many military, nuclear, and aerospace requirements such as MIL- STD 461, 901, 167 and RTCA 160.

Recently Otek has introduced a short depth version of this meter, the HI-Q 214, with a 3” depth instead of the regular 8”.

Otek specializes in customizing instrumentation for process control and automation to fit a variety of needs. For more information please contact us. All of Otek’s products are covered by a lifetime warranty.

 

 

 

THIS PRODUCT SCHEDULED FOR DISCONTINUATION BASED ON THE AVAILABILITY OF PARTS.  CLICK HERE FOR DETAILS OR SEE MODEL NTM-6 AS A REPLACEMENT

The HI-Q 116 is part of Otek’s line of versatile programmable process controllers that are extremely adaptable and can be customized or programmed uniquely to a variety of process control systems and applications. This model was designed to replace the old technology of electromechanical analog edgewise bar graph panel meters. The HI-Q 116 is highly programmable and available with single or dual bar graph displays. It is capable of displaying a large number of variables and scales, including watts, volts, amps, RPM, percent or any sensor output. Up to two displays are 4 digit LED displays that complement the bar graph displays by adding precision. One or two 51-segment LED arrays, or bar graphs, allow for range based control of the color displayed. All displays can be configured with programmable limits and allow for dimming, blinking, and pointing. Standard colors include red, green, and amber with others available upon request. Input linearization including polynomials, X-Y tables (TC & RTD), flow calculations, and a variety of other mathematical functions make this digital panel meter an ideal tool for process monitoring and automation. The HI-Q 116 is unique because it can also be used a remote display, or a slave display, for PLC, DCS, SCADA, or Stand Alone and with 30V DC Compliance Output making this digital panel meter ideal for any process control need. This LED bar graph display is available with 1, 2 or 3 analog inputs, DB-9 connector for the serial connection option and is compatible with USB 2.0 via a converter (USB Tranceiver). RFI/EMI shielding and EPRI compliance are available for this product.

Otek specializes in customizing instrumentation for process control and automation to fit a variety of needs. For more information or questions please contact us. All of Otek’s products are covered by a lifetime warranty.

 

 

***A new version of this model with updated technology is now available. Learn more about the replacement model: NTM-7***

The HI-Q 117 is part of Otek’s line of versatile programmable process controllers that are extremely adaptable and can be customized or programmed uniquely to a variety of process control systems and applications. This model was designed to replace the old analog technology of electromechanical edgewise bar graph panel meters, is highly programmable and available as a single, dual, or triple. It is capable of displaying a large number of variables and scales, including watts, volts, amps, RPM, percent or any sensor output such as 4-20 mA output. Input linearization including polynomials, X-Y tables (TC & RTD), flow calculations, and a variety of other mathematical functions make this digital panel meter an ideal tool for process monitoring and automation. The HI-Q 117 digital panel instrument has up to three 51-segment LED arrays that allow range based control of the color displayed. The automatic tri color bar changes color upon exceeding programmable limits, the standard settings are red for low (or high), yellow for caution, and green for normal range, which complies with HMI and NUREG 0800.  Up to three 4 digit LED segment displays complement the bar graphs for high precision and ease of identification. The HI-Q117 is available with 1, 2 or 3 analog inputs. With analog outputs, up to six 10 A relays or up to eight Open Collector Transistors, this meter can provide extensive control over processes. All settings are accessible over the meter’s serial port. Its ability to transmit readings makes this digital panel meter ideal for integration with DCS, SCADA and other control system applications. This instrument is fitted with screw terminal connectors for all analog I/O, a DB-9 connector for the serial connection option and is compatible with USB 2.0 via a converter (USB Tranceiver). The HI-Q117 bar graph display meter is HMI/HSI/MMI qualified and compliant with many military, nuclear, and aerospace requirements such as MIL- STD 461, 901, 167 and RTCA 160. RFI/EMI shielding and EPRI compliance are available for this product.

Otek specializes in customizing instrumentation for process control and automation to fit a variety of needs. For more information please contact us. All of Otek’s products are covered by a lifetime warranty.

 

 

 

***A new version of this model with updated technology is now available. Learn more about the replacement model: NTM-8***

The HI-Q 118 is part of Otek’s line of versatile programmable process controllers that are extremely adaptable and can be customized or programmed uniquely to a variety of process control systems and applications. This model was designed to replace the old analog technology of electromechanical edgewise bar graph panel meters, is highly programmable and available in single, dual or triple. It is capable of displaying a large number of variables and scales, including watts, volts, amps, RPM, percent or any sensor output. Input linearization including polynomials, X-Y tables (TC & RTD), flow calculations, and a variety of other mathematical functions make this digital meter an ideal tool for process monitoring and automation. The HI-Q 118 digital panel instrument has up to three 51-segment LED arrays that allow range based control of the color displayed. The automatic tri color bar changes color upon exceeding programmable limits, the standard settings are red for low (or high), yellow for caution, and green for normal range, which complies with HMI and NUREG 0800.  Up to four 4-digit LED displays complement the bar graphs for high precision and ease of identification. The HI-Q118 is available with 1, 2 or 3 analog inputs, and with analog outputs, six 10 A relays or eight Open Collector Transistors, this meter can provide extensive control over processes. All settings are accessible over the meter’s serial port, its ability to transmit readings make this digital panel meter ideal for integration with DCS, SCADA and other control system applications. This instrument is fitted with screw terminal connectors for all analog I/O, a DB-9 connector for the serial connection option and is compatible with USB 2.0 via a converter (USB Transceiver). The HI-Q118 bar graph display meter is HMI/MMI qualified and compliant with many military, nuclear, and aerospace requirements. RFI/EMI shielding and EPRI compliance are available for this product.

Otek specializes in customizing instrumentation for process control and automation to fit a variety of needs. For more information please contact us. All of Otek’s products are covered by a lifetime warranty.

 

 

 

THIS PRODUCT SCHEDULED FOR DISCONTINUATION BASED ON THE AVAILABILITY OF PARTS.  CLICK HERE FOR DETAILS OR SEE MODEL NTM-9 AS A REPLACEMENT.

The HI-Q 119 is part of Otek’s line of versatile programmable process controllers that are extremely adaptable and can be customized or programmed uniquely to a variety of process control systems and applications. This model was designed to replace the old analog technology of electromechanical edgewise bar graph panel meters. The HI-Q 119 is highly programmable and is available in single or dual, with vertical and horizontal (single only) configuration. It is capable of displaying a large number of variables and scales, including watts, volts, amps, RPM, percent or any sensor output. Up to two displays are 4 digit LED displays that complement the bar graphs by adding precision and ease of interaction. Up to two bar graph displays are 51-segment LED arrays that allow for range based control of the color displayed. The automatic tri color bar changes color upon exceeding programmable limits, the standard settings are red for low (or high), yellow for caution, and green for normal range, which complies with HMI and NUREG 0800. Standard colors include red, green, and amber with more available for special orders. All displays can be configured with programmable limits and allows for dimming, blinking, and pointing. Input linearization including polynomials, X-Y tables (TC & RTD), flow calculations, and a variety of other mathematical functions make this digital panel meter an ideal tool for process monitoring and automation. The HI-Q 119 is unique as it can also be used a remote display, or a slave display, for PLC, DCS, SCADA, or Stand Alone and Compliance Output making this digital panel meter ideal for any process control need. This LED bar graph display is available with 1, 2 or 3 analog inputs, and isolated analog outputs 4 to 20 mA or 0 to 5 V DC, with a DB-9 connector for the serial connection option and is compatible with USB 2.0 via a converter (USB Tranceiver). RFI/EMI shielding is available for this product.

Otek specializes in customizing instrumentation for process control and automation to fit a variety of needs. For more information please contact us. All of Otek’s products are covered by a lifetime warranty.

 

THIS PRODUCT SCHEDULED FOR DISCONTINUATION BASED ON THE AVAILABILITY OF PARTS.  CLICK HERE FOR DETAILS OR SEE MODEL NTM-2 AS A REPLACEMENT.

The HI-Q120 is part of Otek’s line of versatile programmable process controllers that are extremely adaptable and can be customized or programmed uniquely to a variety of process control systems and applications. This bar graph was particularly designed to replace old analog technology with new digital technology seamlessly and as cost efficient as possible. Input linearization including polynomials, X-Y tables (TC & RTD), flow calculations, and a variety of other mathematical functions make this digital panel meter an ideal tool for process monitoring and automation. With an interchangeable faceplate the bar graph can be customized to display a wide range of variables and scales, including watts, volts, amps, RPM, percent or any sensor output. The HI-Q120 brings color to the instrument panel or control room with up to two 51-segment LED arrays that allow for range based control of the color displayed. The automatic tri color bar changes color upon exceeding programmable limits, the standard settings are red for dangerously low (or high), yellow for caution, and green for normal range, which complies with HMI and NUREG 0800.  Up to two 4 digit LED displays complement the bar graphs for high precision and easy interaction.  The HI-Q120 is available with 1, 2 or 3 analog inputs, and with analog outputs, up to six 10 A relays or up to eight Open Collector Transistors, this meter can provide extensive control over processes. All settings are accessible over the meter’s serial port, its ability to transmit readings make this digital panel meter ideal for integration with DCS, SCADA and other control system applications. This instrument is fitted with screw terminal connectors for all analog I/O, a DB-9 connector for the serial connection option and is compatible with USB 2.0 via a converter (USB Tranceiver). The HI-Q120 bar graph display meter is HMI/MMI qualified and compliant with many military, nuclear, and aerospace requirements.

Otek's HI-Q Series comply with EPRI's and NUREG's Human Factor Engineering, Human-System Interface and MMI (Machine-Machine Interface).

Otek specializes in customizing instrumentation for process control and automation to fit a variety of needs. For more information please contact us. All of Otek’s products are covered by a lifetime warranty.

 

 

THIS PRODUCT SCHEDULED FOR DISCONTINUATION BASED ON THE AVAILABILITY OF PARTS.  CLICK HERE FOR DETAILS OR SEE MODEL NTM-1 AS A REPLACEMENT.

Otek’s HI-Q 121 is a bar graph meter that was created as a byproduct of two of our most popular units the HI-Q 119 and the HI-Q 120. Using the hardware from the HI-Q 119 and altering the casing from the HI-Q 120, we are able to present a slimmer meter that maintains its Seismic, EMI, RFI, and SV&V qualifications. This bar graph was particularly designed to make the switch from the old analog technology to new technology as seamless and cost efficient as possible.

Input linearization including polynomials, X-Y tables (TC & RTD), flow calculations, and a variety of other mathematical functions make this digital panel meter an ideal tool for process monitoring and automation. With an interchangeable faceplate the bar graph can be customized to display a wide range of variables and scales, including watts, volts, amps, RPM, percent or any sensor output.

The HI-Q121 brings color to the instrument panel or control room with up to two 51-segment LED arrays that allow range based control of the color displayed. The automatic tri color bar changes color upon exceeding programmable limits, the standard settings are red for low (or high), yellow for caution, and green for normal range, which complies with HMI and NUREG 0800.  Up to two 4-digit LED displays complement the bar graphs for high precision and easy interaction.  The HI-Q121 is available with 1, 2 or 3 analog inputs, and with analog outputs, up to six 10 A relays or up to eight Open Collector Transistors, capable of providing extensive process control. All settings are accessible over the meter’s serial port; its ability to transmit readings make this digital panel meter ideal for integration with DCS, SCADA and other control system applications. This instrument is fitted with screw terminal connectors for all analog I/O, a DB-9 connector for the serial connection option and is compatible with USB 2.0 via a converter (USB-Transceiver). The HI-Q121 bar graph display meter is HMI/MMI qualified and compliant with many military, nuclear, and aerospace requirements.

Otek specializes in customizing instrumentation for process control and automation to fit a variety of needs. For more information please contact us. All of Otek’s products are covered by a lifetime warranty.

 

 

THIS PRODUCT SCHEDULED FOR DISCONTINUATION BASED ON THE AVAILABILITY OF PARTS.  CLICK HERE FOR DETAILS OR SEE MODEL NTM-2 AS A REPLACEMENT.

The HI-Q2000/2k is part of Otek’s line of versatile programmable process controllers that can be customized or programmed uniquely to a variety of process control systems and applications. This model was designed to replace old analog technology of electromechanical edgewise bar graph panel meters. It is a form-and-fit replacement for the internals of Versatile’s VMI2000 indicator with the ability to simply “plug and play” when used as an open-frame unit and inserted into the old existing housing.

The HI-Q2000/2k is highly programmable and available in single or dual, with vertical and horizontal configurations. It is capable of displaying a large number of variables and scales, including watts, volts, amps, RPM, percent or any sensor output. Up to two displays are 4 digit LED displays that complement the bar graphs by adding precision and ease of interaction. Up to two bar graph displays are 51-segment LED arrays that allow for range based control of the color displayed. The automatic tri color bar changes color upon exceeding programmable limits, the standard settings are red for low (or high), yellow for caution, and green for normal range, which complies with HMI and NUREG 0800. Standard colors include red, green, and amber with others available upon request. All displays can be configured with programmable limits and allow for dimming, blinking, and pointing. Input linearization including polynomials, X-Y tables (TC & RTD), flow calculations, and a variety of other mathematical functions make this digital panel meter an ideal tool for process monitoring and automation. The HI-Q2000/2k comes standard with no casing; however, casing options are available by using Otek models HI-Q120 and HI-Q 121 that can be ordered to meet Mil-spec and Nuclear regulations. This digital switchboard display is also fitted with RS232, 485, 422 or USB I/O connections and up to 3 relays (optional) for interaction with DCS, SCADA, or stand alone process control systems and computers.

 Otek specializes in customizing instrumentation for process control and automation to fit a variety of needs. For more information please contact us. All of Otek’s products are covered by a lifetime warranty.

 

 

THIS PRODUCT SCHEDULED FOR DISCONTINUATION BASED ON THE AVAILABILITY OF PARTS.  CLICK HERE FOR DETAILS OR SEE MODEL NTM-4 AS A REPLACEMENT.

The HI-Q 214 is Otek’s compact version of the HI-Q114 now with a depth of just 3” instead of 8”. It has been designed to replace obsolete analog edgewise bar graphs, such as Chessel’s 700 and make the switch from analog to digital technology as seamless and cost efficient as possible. It is a part of Otek’s line of versatile programmable process controllers that can be customized or programmed uniquely to a variety of process control systems and applications. Input linearization including polynomials, X-Y tables (TC & RTD), flow calculations, and a variety of other mathematical functions make this digital panel meter an ideal tool for process monitoring and automation. With an interchangeable faceplate the bar graph can be customized to display a wide range of variables and scales, including watts, volts, amps, RPM, percent or any sensor output. The HI-Q214 brings color to the instrument panel or control room with a 51-segment LED array that allows range based control of the color displayed. The automatic tri color bar changes color upon exceeding programmable limits, the standard settings are red for very low (or high), yellow for caution, and green for normal range, which complies with HMI and NUREG 0800.  A 4-digit LED segment display complements the bar graph for high precision and easy interaction.  The HI-Q214 is available with 1, 2 or 3 analog inputs, and with analog outputs, up to six 10 A relays or up to eight Open Collector Transistors. All settings are accessible over the meter’s serial port. Its ability to transmit readings makes this digital panel meter ideal for integration with DCS, SCADA, Ethernet and other control system applications. This instrument is fitted with screw terminal connectors for all analog I/O, a DB-9 connector for the serial connection option and is compatible with USB 2.0 via a converter (USB Transceiver). The HI-Q214 bar graph display meter is HMI/MMI qualified and compliant with many military, nuclear, and aerospace requirements such as MIL- STD 461, 901, 167 and RTCA 160..

Otek specializes in customizing instrumentation for process control and automation to fit a variety of needs. For more information please contact us. All of Otek’s products are covered by a lifetime warranty.

 

 

 

THIS PRODUCT SCHEDULED FOR DISCONTINUATION BASED ON THE AVAILABILITY OF PARTS.  CLICK HERE FOR DETAILS OR SEE MODEL NTM-9 AS A REPLACEMENT

The model HI-Q219 programmable auto tri-color LED bargraph controller offers the same rugged hardware and firmware as the popular model HI-Q119 (and other bargraphs of the HI-Q family) but it is less than 3" deep.  This makes it ideal for applications where space behind the panel is limited.  Plastic or metal housing.  Both Mil-Standard and EPRI 102323 compliant versions are available on request.

OTEK’s HI-QTEK (1.89"W x 6.06"H x 3.58"D) is a programmable intelligent auto-tricolor bargraph/controller that comes in a single or dual bar-digital display.

WHAT IS IT? •It is a Computing Controller  •It is a DCS to Process Interface •It is a Process to SCADA Interface •It is a Remote Process Reporter  •It is a Single Loop Process Controller •It is a Programmable Logic Controller (P.L.C.) •Or Just a Meter!!

THIS PRODUCT SCHEDULED FOR DISCONTINUATION BASED ON THE AVAILABILITY OF PARTS.  CLICK HERE FOR DETAILS OR SEE MODEL NTM-9 AS A REPLACEMENT.

The LBD (1.74"W x 6.00"H x 2.30"D) is a versatile loop powered 4 1/2 digit LCD bargaph controller with over 20 different input signal options. Panel cutout (1.77"W x 5.70"H).

The Innovator & Leader on Automatic Tricolor Bargraphs, now offers you the latest technology for replacement and new applications. The New LBD Series uses a highly integrated DSP  and Nanowatt microcontroller along with a proven software package approved and used by the Military & Nuclear Industries on its popular HI-Q Series. SIGNAL CONDITIONERS:  20+ signal conditioners are available (more soon).  See ordering information and description section.

The LBD is available in 2 basic versions: 1. Loop Powered: Uses NANOWATT Technology for display, RS232E I/O and Automatic Tricolor Backlight. 2. Externally Powered: ANALOG INPUTS: Industry's standard 4-20mA, mA and VDC are included. Custom signal conditioners for %RH, pH, TC, RTD, RMS, S-G and more are available on request. MATH FUNCTIONS: RTD, TC & X-Y linearization plus Tare, Offset, Scale, Peak and more are programmable via simple commands. (Needs Serial I/O).CONTROL OUTPUTS: 4 each relays or 4 open collector transistors for High, High-High, Low and Low-Low Control. (Needs Serial I/O)ANALOG OUTPUT: Optional isolated 0-1mA, 4-20mA, 0-20mA or 0-5VDC with 16 Bit resolution. (Needs Serial I/O) SERIAL I/O" Standard is RS232 with optional RS485 or USB. You can even power the LBD via the USB port (2W Max.). POWER INPUT: Standard is 5VDC with optional isolated 6-32VDC, 90-265VAC or USB powered. POWER OUTPUT FOR 4-20mA TRANSMITTER: Only available with External Power either non-isolated 28VDC @ 20mA or isolated 30V @ 20mA.

THIS PRODUCT SCHEDULED FOR DISCONTINUATION BASED ON THE AVAILABILITY OF PARTS.  CLICK HERE FOR DETAILS OR SEE MODELS NTM-M, NTM-N OR NTM-P AS REPLACEMENTS.

The LPB-0 (0.950"W x 6.062"H x 1.775"D) is a ultra slim low cost loop powered edgewise LED bargraph display meter. Panel cutout (0.810"W x 5.410"H)

Another "World's First" joins OTEK's long list of Powerless™(Patented ) Loop Powered Instruments. POWERLESS™:  The LPB-0 has 50 segments bright high efciency segments for 2% resolution and can be set for "Pointer" (1, 3 or 5) as well as full bargraph operation. The unit's low 4.5V burden in the loop allows for multiple units strung along the factory or with only 2 wires and NO power supply to connect. POWERED:  The "Powered" version accepts 6-32 VDC & 90-265 VAC isolated power and 5 VDC nonisolated.  Here you can use any of our standard signal conditioners (see description and ordering information) or we will design it for your.  The LPB series is complemented by other Powerless series for A. C. signals (ACS), DC signals (VSP) and loop signals (LPS) to match your control panel. The bargraph is unicolor red.  For custom colors or segments, use #9 on 3rd digit and specify it. SIGNAL CONDITIONERS:  The LPB series offers over 20 signal conditioners to interface directly to your sensor/transducer (see ordering information and descriptive sections).  The Powered version can supply power to your sensor/transmitter.  The Powerless™ version extract the parasitic power (<100mW) from your signal (ac or dc) to power itself. CUSTOMS:  OTEK has developed over 40 signal conditions (our "SC" series) for any signal and most of them can be included on the LPB.  They even include 4-20mA transmission so the LPB becomes a "transmitter bargraph."  Contact OTEK for your special needs. 

OTEK's TBD (3.10"W x 6"H x 3"D) is a triple isolated bar-digital controller/meter with 51 sgement auto tri-color bargraph and (3) four digit displays. Essentially, the unit can replace three units in one!  

A nuclear customer liked our model “EBD” and gave us the challenge to put 3 isolated channels in one case, make it to military standards 461,901,810 & 167 (Epri TR-102323R3), Class 1E, and keep the case< 4 inches deep!  Now you can benefit from their need, OTEK’s ingenuity and over 35 years experience in high quality instrumentation and its unique lifetime warranty

***A new version of this model with updated technology is now available. Learn more about the replacement model: NTM-5***

The TRC (3.10"W x 6"H x 3"D) is the first instrument of its kind that offers isolated redundant control at an affordable price in a compact package. This unit is specifically designed and dedicated to triple redundant control of one (1) specific parameter.

DESCRIPTION: What is it?  A redundant controller is a common term used in military, space and nuclear industries to ensure Fail Safe operation of critical processes where human errors, wiring, sensor or equipment failure is possible, thus preventing loss of product, investment or environment. How is it done? In large and small applications, 3 expensive and sophisticated computers are used to monitor/control critical parameters.  The TRC is the first instrument of its kind that offers redundant control at an affordable price in a compact package dedicated to redundant control of one (1) specific parameter.
 
The TRC contains 3 identical isolated channels with their own A/D, DAC, uC, relays, Serial I/O and power supply. The core of the TRC is the algorithm performed by the CPU that continuously compares the serial output of each channel to the other 2.  Having all 3 channels monitoring the signals from 3 different sensors/transmitters at the process site using their own isolated power source and wiring eliminates single point failures.The CPU is con?gured via keypad (or serial) to set a “window” of acceptance (i.e. 5% band).  This means that any channel that falls outside of this window (as compared to the other 2) is disabled by the CPU and reported (alarms) to the supervisory personnel or equipment.  It’s important to note that the TRC’s function is to assure redundant control of the process by a democratic (majority) algorithm in addition to accurate data presentationThe majority rules!  The TRC eliminates 3 out of the 4 most important causes of catastrophes:  sensor, wiring and instrumentation.  The human error is up to the user.  
 
CPU FAILURE:  In the event the CPU was to fail (see block diagram), all 3 channels’ controllers would cease to receive COP data from the CPU.  After a delay, the TRC will:  1) Cease to transmit serial data; 2) Each channel (display, relays, DACS) will continue to operate normally, but independent of each other (lost its commander).3)  All numerical displays will continue to display their data, but their own bargraph will turn ALL orange.4)  Other visual indications on requests (use #9 on digit 8 and contact OTEK).