Compass Instruments, LLC

Texas, United States

The pressure transmitter tester allows 1502 type pressure transmitters to be function tested very quickly to out those which have big offsets or are not responsive at all. Note the simple functions: Plug the pressure cable into the unit; plug the 24V adapter into the unit. Both displays will come on and should read near zero. Press the red button and 24VDC is applied to the pressure transmitter and with no pressure it should output 4 mA.  Press both the red and green buttons at the same time and the pressure transmitter output should switch to 20 mA. The current meter would then display the full scale reading (approximately 20 mA).

The 8040 Series of Analog Transmitter can be factory programmed to various preselected outputs. Additional ranges may be available, consult the factory for more information. The unit may be used as a signal converter, perhaps converting a 0-5 volt control signal from a PLC to 4-20 mA for a control input on another device. It can also be used as a manual control by using a 10K pot connected to terminals 1, 2, and 3 with the arm of the pot on terminal 1. The control output may be 4-20 MA, 0 to 20 MA, 1-5VDC, 0-5VDC, 1-10 VDC, 0-10VDC or 6-10VDC.

• Part Number8090

We ensure the products we provide buyers with are as per international quality management systems. Dedicated towards bringing forth the finest and premium quality Dual Solid State Relay, we are a well-established Supplier in this domain.   Details : Operates Over A Wide Range Of Input Control Voltages. Outputs Are Isolated From Input And From Each Other. Please Specify If You Want The Output On When Input Is Low Or High. (For Each Channel) Each Output Will Switch Up To 40 Vdc And Will Carry Up To 10 Amps When Active. High Reliability With Solid State Construction And No Moving Parts. Outputs Can Source Or Sink Current.

The dual voltage output module allows 10K ohm potentiometers to control the two voltage outputs. Modules are available with various output configurations including, 1.0 to 5.0 VDC, 0.5 to 4.5VDC, 1.0 to 10.0 volts or 2 to 10.0 volts.  Special order modules may be made to allow the two outputs to be scaled differently. Custom outputs may be available, check with the factory for availability. Outputs are used in a wide variety of applications. Some diesel engines require 0.5 to 4.5VDC to control throttle.   Details : Various PLCs and control systems require voltage Inputs for control and this unit can serve as a manual input into those type systems. Input voltage should be at least 2 volts higher than the maximum output voltage, but not greater than 35 volts DC. The outputs are not designed to drive extremely low impedances. Total power dissipation on each output should be limited to 0.1 watt

The Compass Instruments 8010 Frequency Splitter/Isolator may be used to create two identical isolated frequency outputs from one frequency input. The input level may be any amplitude up to 24V. The threshold is approximately 2.4V and there is 45 millivolts hysteresis to prevent double pulsing. Input impedance is two meg-ohms. Each output may be powered separately for isolation with 5 to 30 volts. Each output has a 5100 ohm pull up to the applied voltage. For higher frequencies it may be necessary to add an external pull up.

Far-famed for the outstanding range of Dual PWM Transmitter ; we are a leading name in this trade. Our products are the most sought after in the market, as they are specifically made as per global and domestic quality managements systems. Details : Part No. 8020   A 10K ohm potentiometer or 0 to 5VDC signal is used to control each of the two Independently Controlled Outputs. The outputs are linearly proportional to the input signal with 0V producing 0% PWM and 5VDC producing 100% PWM.  Output Open Collectors Sinks Up To 10 Amps On Each Channel. 488 Hz Output Is Perfect For Driving Inductive Hydraulic Controls. Wide Input Power Range Of 7 To 30 Vdc Allows Operation In Both 12vdc And 24vdc Systems.

• Part Number8030

We are U.S. (United States) based entity, engaged in making available top-of-the-line quality products in the domestic market. In order to keep the quality of the products up to the mark, we check the entire range against varied quality parameters. The 4-20 Milliamp Filter is used for two main reasons : The 420 milliamp filter is normally used for one of the following applications : The 4-20 milliamp signal is the output of a transducer which is sensing an erratic media such as turbulent flow or pressure from a positive displacement pump. The signal run is lengthy and has 60 Hz or other noise superimposed on the signal. In either case, this unit will convert a noisy signal to a clean signal. If you have a load cell on equipment with moving parts, the vibration sometimes causes the load cell to have an erratic or noisy output. In applications like these, this device will provide a clean output signal which is representative of the average input signal. If You Have An Application With An Unstable 4-20 Ma Signal, We Challenge You To use this unit and we believe when you see the difference that you will be delighted with its performance. The Result Will Be Worth More Than A Thousand Descriptive Words.

Positive displacement pumps typically cause discharge pressure pulsations, especially when pumping liquids that are non-compressible and even more so at higher pressures. Well stimulation pumps, mud pumps, and pumps used to cement well casings are all examples of applications that have historically been plagued with pulsating pressure. Yet, it is of utmost importance to know the discharge pressure so that the over-pressure shutdown system can operate effective and quickly in the event of a sudden rise in pressure.   Details : 1502 Hammer Union pressure transmitters made by Viatran, GP-50, or a number of other companies are typically used to measure the pressure. Usually there is some attempt to use software averaging to stabilize the displayed value. But in order for the system to be responsive to an over pressure condition, up until now, not much could be done. The compass Instruments Pressure Dampener is connected to the 1502 type pressure transmitter and the output is a smooth and clean 4-20 milliamp signal that is delayed only approximately 1 second. Additionally, the pressure transmitter is electrically isolated so chassis grounds and signal grounds at different levels are no longer a problem. The unit actually has two isolated outputs, one with a smooth, clean, 4-20 mA signal that has about 1 second delay, the other that has a 4-20 mA signal with little to no delay but the same pressure pulsations as are on the input. Most all standard 1502 Hammer Union pressure transmitters have a built in shunt calibrate function connected to connector pins This calibrate function is also electrically isolated and still function as always So the operator can continue to calibrate his equipment right through this device as though it was not there. Gets Rid Of Pulsation Noise In Pressure Signals. Allows Pressure Dis-Play To Be Stable. Provides Clean Data For Data Logging And Plotting. Provides Electrical Isolation Preventing Ground Problems.

Don’t be fooled by the small size, this is a real proximity pick-up that works with most any gear, or even a bolt on a shaft. Output is one pulse per passing gear tooth. Installation adjustment is simplified with the internal LED that is on when object is in range does not have to be moving. If the gear is rotating and the unit is installed correctly, the LED will blink with each passing gear tooth. This unit will sense down to zero speed and does not have a low speed cutoff. Cable can be extended and can be supplied with a connector and an over molded cable.   Technical Specification : Pick-up range up to 0.15” Power with 6 to 30 VDC Mounts in a 1/2 clearance hole. LED Shows when functional. Output is normally on NPN transistor. Open collector can sink up to 300 mA. Output signal amplitude equals voltage applied.

• Model Number122410-2

This 12 to 24VDC converter is designed for reliability. It’s multiphase circuitry utilizes the best components available to give high reliability at an affordable cost. This unit has been on the market for over 8 years, we have literally sold thousands and have not had a single unit returned because of an electrical failure. It is mounted inside a NEMA 4X aluminum enclosure and is fully potted so that it may be mounted anywhere in any orientation and does not require an additional enclosure or protection from the elements. Color coded flying leads are over 2 meters long for ease of wiring into control circuitry. Input overvoltage protection and output current limit circuitry protect the unit from damage due to external fault conditions.   Details : Mounting hole dimensions are 2.5 X 5.0. Wide temperature range of  -40 to +65 degrees C. Wide voltage input range of 9.0 to 23.0 VDC provides an output Voltage of 24VDC +/- 0.5V. Load regulation is +/- 0.15V Maximum. Line regulation is +/- 0.15V Maximum. The output is not electrically isolated from the input.