Omega PCL120 User Manual Download

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User’s Guide

PCL120

Precision Loop Calibrator

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Summary of Contents for PCL120

Page 1: ...NORWALK CT ww e mail info omega com For latest product manuals w omegamanual info Shop online at omega comSM User sGuide PCL120 Precision Loop Calibrator ...

Page 2: ...el 203 359 1660 Fax 203 359 7700 e mail info omega com For Other Locations Visit omega com worldwide The information contained in this document is believed to be correct but OMEGA accepts no liability for any errors it contains and reserves the right to alter specifications without notice omega com info omega com Servicing North America U S A Omega Engineering Inc Headquarters Toll Free 1 800 826 ...

Page 3: ...HART Resistor Setup 4 4 Basic Operating Modes A Milliamp Source 5 B Milliamp Simulation 6 C Milliamp Measure 7 D Milliamp Measure with Loop Power 7 E Voltage Measure 8 5 Advanced Operating Modes A Auto Step Ramp Mode 8 B Percent Error Mode 9 C Min Max Datalogging 9 6 Maintenance A Battery Selection 10 B Input Protection 10 C Calibration 10 7 Specifications 11 ...

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Page 5: ...le simultaneously reading the resultant loop current All readings are displayed in both milliamps and of span 1 1 Customer Service OMEGA Engineering Tel 203 359 1660 Fax 203 359 7811 www omega com email cservice omega com 1 2 Unpacking Remove the packing list and verify that all equipment has been received If there are any questions about the shipment please call OMEGA at 1 800 826 6342 When the s...

Page 6: ...ual Important Information Off On Canadian Standards Association The following definitions apply to the terms Warning and Caution Warning identifies conditions and actions that may pose hazards to the user Caution identifies conditions and actions that may damage the instrument being used Use the calibrator only as specified in this manual otherwise injury and damage to the calibrator may occur ...

Page 7: ...ads for damaged insulation or exposed metal When using the probes keep your fingers away from the probe contacts Keep your fingers behind the finger guards on the test leads Do not use the calibrator if it operates abnormally Protection may be impaired When in doubt have the calibrator serviced Do not operate the calibrator around explosive gas vapor or dust Disconnect test leads before changing t...

Page 8: ...it The battery save feature will turn off the PCL120 automatically if no keys are pressed after 30 minutes To change the length of time on the battery save feature or to disable it completely perform the following steps during power up 1 Turn off the PCL120 2 Hold the key down firmly 3 Turn on the PCL120 4 After power up wait about 1 second and release the key 5 The display will now indicate the a...

Page 9: ...unit is shipped with the jumper in place To remove the jumper open the case and refer to Figure 2 to locate the jumper then pull off the jumper to enable the resistor The jumper can be stored outside of the unit or re installed only on one pin so that the circuit remains open Figure 2 Note When the 250 ohm resistor is enabled the load driving capability is reduced from 1200 ohms to 950 ohms In mos...

Page 10: ...lecting the decade to be adjusted 4 The output can also be stepped in 4 mA steps 25 using the key 5 The auto step feature provides automated output changes Refer to the Auto Modes Section of the manual for more information B Milliamp Simulation Figure 4 shows how to connect the PCL120 to act as a two wire transmitter using an external power supply In this application the power for the loop comes f...

Page 11: ...entage relative to a 4 to 20 mA span D Milliamp Measure with Loop Power Again Figure 5 shows the proper connections But in this case the device under test is a two wire transmitter that requires an external power supply to generate an output current In this application the PCL120 will supply 24 volts to the loop while simultaneously measuring the resultant loop current To turn on the loop power su...

Page 12: ... The PCL120 has the ability to step the mA output in 25 steps automatically in 5 second intervals It can also ramp the mA output from 4 mA to 20 mA then back to 4 mA in a linear fashion automatically To activate the Auto Step Ramp mode use the following procedure 1 The Auto Step Ramp function can be used in either the source mA or simulate mA mode Place the PCL120 in one or the other mode 2 Connec...

Page 13: ... error or deviation calculated as a percentage of span 6 When the key is released the display will return to normal operation C Min Max Datalogging When the PCL120 is in any of the measure modes mA mA w loop power or voltage it will continuously monitor and store the minimum and maximum values for that particular input mode To operate the datalogging feature use the following procedure 1 Place the...

Page 14: ...se while maintaining a float charge on the Ni Cd battery Warning Never connect the AC adapter charger with the 9V alkaline battery installed To order the 9V Ni Cd battery or AC adapter charger contact OMEGA Engineering at 800 826 6342 B Input Protection The PCL120 incorporates a fuseless input protection and will tolerate most misconnections up to 250 VAC or 250 VDC for up to 30 seconds duration B...

Page 15: ...nts Resolution 001 mA 001 volts Loop Supply Voltage 24 VDC Typical Drive Capability 1200Ω w o Hart 950Ω w Hart Auto Error Function Yes Selectable Decade Adjustment Yes Auto Step Ramp Yes Preset Outputs 5 Loop Power Measure Yes Capability Operating Temperature 10 to 55 C Power Supply 1 9V Battery Rechargeable Battery Option Yes AC Adapter Yes Size 5 7 x 3 15 x 1 43 Weight 12 oz ...

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Page 17: ...by OMEGA if the unit is found to be defective it will be repaired or replaced at no charge OMEGA s WARRANTY does not apply to defects resulting from any action of the purchaser including but not limited to mishandling improper interfacing operation outside of design limits improper repair or unauthorized modification This WARRANTY is VOID if the unit shows evidence of having been tampered with or ...

Page 18: ...s Air Velocity Indicators Turbine Paddlewheel Systems Totalizers Batch Controllers pH CONDUCTIVITY pH Electrodes Testers Accessories Benchtop Laboratory Meters Controllers Calibrators Simulators Pumps Industrial pH Conductivity Equipment DATA ACQUISITION Communications Based Acquisition Systems Data Logging Systems Wireless Sensors Transmitters Receivers Signal Conditioners Data Acquisition Softwa...

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