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PIECAL 334Plus-9002 User Manual Rev A.indd

1. E Operating Instructions Practical Instrument Electronics PIECAL 334 plus Automated mA Loop Calibrator EASY TO USE With the PIECAL 334Plus you can check calibrate and measure all your current signal instruments in a 4 to 20 milliamp DC loop It can be used at any access point in your loop Source amp Read 0 000 to 24 000 mA Simulate a 2 Wire Transmitter or use the PIECAL 334Plus to simultaneously power your 2 Wire Transmitter and measure its output EASY TO READ Turn on the backlight to easily read the display in dark areas of the plant TROUBLESHOOT LOOP PROBLEMS Quickly diagnose ground fault and current leakage with the patented loop diagnostic technology US Patent 7 248 058 SOURCE MILLIAMPS Calibrate recorders digital indicators stroke valves or any instruments that get their input from a 4 to 20 mA loop Easily set any value quickly to within 0 001 mA with the adjustable PIECAL 334 Pilus Automated mA Loop Calibrator digital potentiometer DIAL or use preset 4 000 xe iz E mA 0 00 and 20 000 mA 100 00 READVOC m ai Mm 54 i0 20A EZ CHECK settings a na ELCHECK AUTOMATIC OUTPUT STEPPING amp RAMPING 100 0 SOURCE fiecal com 20 00mA Press amp hold the dial to automatically step from 4 to 20 in 2 3 or 5 steps or choose a continuous ramp CALIBRATE USING LOOP POWER Check loop wiring and receivers by using the PIECAL 334Plus in place of a 2 Wire transmitter The PIECAL 33
2. POWER SWITCH to mA or 4 to 20 mA and the SOURCE READ 2 WIRE SWITCH to SOURCE or 2 WIRE The starting point for automatic stepping amp ramping is based on the EZ CHECK SWITCH Place the EZ CHECK switch at 20 mA and the automatic stepping or ramping will start at 20 000 mA 100 00 and the values will decrease Place the EZ CHECK switch at 4 mA and the automatic stepping or ramping will start at 4 000 mA 0 00 and the values will increase STEPPING OUT 12 000 Start automatic stepping or ramping by pressing and holding the DIAL KNOB for 3 seconds The word STEPPING or RAMPING will flash on the display anytime the selected automatic function is running The 334Plus will automatically step or ramp between 4mA amp 20mA or 20mA amp 4mA for 30 seconds then reverse direction Stop the stepping or ramping by pressing or turning the knob or moving any switch Practical Instrument Electronics 841 Holt Road 1 Webster NY 14580 Tel 585 872 9350 Fax 585 872 2638 sales piecal com www piecal com Page 4 Setting Up Automatic Stepping amp Ramping To change the Automatic Stepping amp Ramping settings Double click the DIAL KNOB at any time the unit is on and the following display will appear for 30 seconds Turn the DIAL KNOB to move through the menu Press the DIAL KNOB to toggle between OFF and ON or to change the steps setting These settings are remembered even with th
3. faster dialing adjusting 0 100 mA 1 00 ata time Press and Hold the knob to start automatic stepping or ramping Double click the knob for stepping and Ground Leak Detection setup EXTERNAL POWER JACK Not Shown When used with the optional AC Adaptor the external power jack will eliminate the drain on your batteries This is handy for jobs that require extended bench use of the PIECAL 334Plus See accessories page 10 for ordering information Note This feature does not charge the batteries it only supplies power to the PIECAL 334Plus CHANGING BATTERIES Low battery is indicated by BAT on the display Approximately one to four hours of typical operation remain before the 334Plus will automatically turn off To change the batteries remove the rubber boot remove the battery door from the back of the unit by sliding the door downward This allows access to the battery compartment Replace with four 4 AA 1 5V batteries being careful to check the polarity Replace the battery door amp replace the boot All stored configuration options are rest to factory settings when the batteries are removed Note Alkaline batteries are supplied and recommended for maximum battery life amp performance Practical Instrument Electronics 841 Holt Road 1 Webster NY 14580 Tel 585 872 9350 Fax 585 872 2638 sales piecal com www piecal com Page 2 Configuration Power On Options HART MODE AUTO OFF a
4. 24 00 milliamps The compliance voltage is a nominal 24 VDC to provide the driving power to your milliamp receivers 1 Disconnect one or both input wires from the device to be calibrated 2 Select mA or 4 to 20mA with slide switch 3 Select SOURCE using slide switch 4 Connect the output leads of the PIECAL 334Plus to the inputs of the device being calibrated making sure to check polarity Red lead to the plus input and black lead to the minus input Milliamp Receiver Input Controller PIECAL 334 Plus A utomated mA Loop Calibrator OUT Transmitter 20 000 ma Computer Logger I P Se pie jn The output is adjusted in 0 001 mA 0 01 increments by turning the knob while the EZ CHECK switch is in the DIAL a T position or the current can be set at the fixed points of 4 000mA 0 00 or 20 000mA 100 00 with switch Press and turn the knob for faster dialing with 0 100 1 00 increments SIMULATOR Start automatic stepping or ramping by pressing and holding the DIAL KNOB for 3 seconds The word STEPPING or RAMPING will flash on the display anytime the selected automatic function is running The 334Plus will automatically step or ramp between 4mA amp 20mA or 20mA amp 4mA for 30 seconds then reverse direction Stop the stepping or ramping by pressing or turning the knob or moving any switch Simulate 2 Wire Transmitters 2 Wire mA 2 Wir
5. TO FULL SCALE TO POWER 2 WIRE TRANSMITTERS POWER SWITCH Select mA to display and calibrate in milliamps Select 4 to 20 mA to display and calibrate in percent Select READ VDC to read volts DC Return the slide switch to the OFF position when not in use Note Percent mode can also be used with chart recorders valves or current trips that display in percent 100 00 20 000 mA 75 00 16 000 mA 50 00 12 000 mA 25 00 8 000 mA 0 00 4 000 mA To convert from Milliamps to Percent Percent Milliamps 4 0 16 To convert from Percent to Milliamps Milliamps Percent 6 25 4 SOURCE READ 2 WIRE SWITCH Select SOURCE to output in mA or percent Select READ to read in mA or percent Select 2 WIRE to simulate a 2 Wire Transmitter EZ CHECK SWITCH Instantly output 4 000 mA or 20 000 mA by moving the EZ CHECK switch to the 4 00mA 0 0 position or 20 00mA 100 0 position For fast three point checks select the DIAL position The PIECAL 334Plus will remember the last DIAL value even with the power off Note The same DIAL value is stored for both mA and The recalled value will be displayed in the units selected DIAL KNOB Turn the knob to adjust output level Turn clockwise to increase the output counter clockwise to decrease the output 0 001 mA 0 01 at a time Push and turn the knob for
6. 4Plus uses any loop power from 2 to 100V DC READ LOOP CURRENT or Options S _ Check controller outputs or measure the milliamp PRACTICAL INSTRUMENT ELECTRONICS signal anywhere in the loop The PIECAL 334Plus n measures 0 000 to 52 000 mA 25 00 to 300 00 signals with greater accuracy than a typical multimeter POWER amp MEASURE 2 WIRE TRANSMITTERS The PIECAL 334Plus can simultaneously output 24V DC to power any and all devices in a process loop using the internal batteries and internal switching power supply while measuring the output of a 2 Wire Transmitter and any other loop devices Powers HART transmitters with built in 250 ohm resistor simplifying hookups with HART communicators READ DC VOLTS The PIECAL 334Plus can measure from 99 99 to 99 99 VDC with 10mV resolution Use it to check loop power supplies I V converters 1 to 5 Volt signals and other voltages making it unnecessary to carry an additional multimeter Practical Instrument Electronics 841 Holt Road 1 Webster NY 14580 Tel 585 872 9350 Fax 585 872 2638 sales piecal com www piecal com Copyright 2008 All rights reserved 334Plus 9002 Rev A 15 August 2008 Page Basic Operation D PIECAL 334 Plus Automated mA Loop Calibrator 20 000 mA OFF READ VDC ap lu 4 to 20mA hg EZ CHECK TRANSMITTERS re 100 0 SOURCE piecal com 20 00mA READ 50 mA 100V 2 WIRE TRANSMITTER SIMULATOR DIAL OUTPUT
7. CAL 334Plus can be substituted for a faulty controller or transmitter to provide temporary manual control of the process One technician takes manual control of the process while a second technician retrieves installs and configures a replacement instrument OPEN LOOPS The display will indicate ERROR and 0 000 mA or 25 00 if there is an open loop or if the polarity is reversed Check all the connections in the loop or try reversing the leads POWER TRANSMITTER Adjusting the SOURCE output to full scale gt 24 mA supplies a nominal 24V DC to power a 2 Wire Transmitter while simultaneously displaying the 4 to 20 mA output of the transmitter READ MILLIAMPS Select READ milliamps by moving slide switch to mA or 4 to 20mA and moving slide switch to READ Place the PIECAL 334Plus in the loop in series with the current to be measured SOURCE MILLIAMPS or 2 WIRE SIMULATOR Select SOURCE using slide switch to output from 0 000 to 24 000 milliamps using the PIECAL 334Plus s internal power source This will provide 24V DC Select 2 WIRE to control the current in a loop that is using an existing power supply To change the output current adjust the dial knob Turning clockwise will increase the output value turning counter clockwise will decrease the output value with 0 001 mA 0 01 resolution Press and turn the knob for faster dialing with 0 100 mA 1 00 resolution The output is adjustab
8. EAK DETECTION Setup Double click the DIAL KNOB at any time the unit is on and the following display will appear for 30 seconds gt EXIT MENU STEPS 5 GND LEAK DET OFF Turn the DIAL KNOB to move through the menu Press the DIAL KNOB to toggle between OFF and ON or to change the steps setting These settings are remembered even with the power off EXIT MENU exits this menu immediately and saves any changes Menu will automatically exit after 30 seconds of inactivity STEPS pressing the knob will cycle from 2 3 5 steps and RAMP 2 steps will automatically switch between 4 amp 20 mA 0 amp 100 3 steps between 4 12 amp 20 mA 0 50 amp 100 5 steps between 4 8 12 16 amp 20 mA 0 25 50 75 amp 100 RAMP will continuously ramp the output between 4 amp 20 mA 0 amp 100 GROUND LEAK DETECTION when ON the 334Plus has the ability to check for current leaks caused by ground faults moisture or corrosion This operates in Power Measure mode while powering up a 2 wire transmitter or loop Note All settings are remembered even with the power off Removing the batteries resets the values to factory defaults Practical Instrument Electronics 841 Holt Road 1 Webster NY 14580 Tel 585 872 9350 Fax 585 872 2638 sales piecal com www piecal com Page 3 Sourcing Milliamps mA OUT OUT Percent of 4 to 20 mA Choose this function to provide an output from 0 00 to
9. e Percent of 4 to 20 mA Choose this function to simulate a 2 Wire Transmitter output from 0 000 to 24 000 milliamps Operates in loops with power supply voltages from 2 to 100 VDC 1 Disconnect one or both input wires from the device to be cali brated Receiver 2 Select mA or C 4 to 20mA ee ama with slide switch W 3 Select 2 WIRE using slide switch 4 Connect the red input lead of Maa the 334Plus to the plus input Power Supply Pex Dee of the field connections and the alae BA yo Transmitter black lead to the minus Disconnected Loop current is adjusted in 0 001 mA 0 01 increments by turning the knob while the EZ CHECK switch is in the DIAL position or the current can be set at the fixed points of 4 000mA 0 00 or 20 000mA 100 00 with switch Press and turn the knob for faster dialing with 0 100 1 00 increments Start automatic stepping or ramping by pressing and holding the DIAL KNOB for 3 seconds The word STEPPING or RAMPING will flash on the display anytime the selected automatic function is running The 334Plus will automatically step or ramp between 4mA amp 20mA or 20mA amp 4mA for 30 seconds then reverse direction Stop the stepping or ramping by pressing or turning the knob or moving any switch Using Automatic Stepping amp Ramping Using Automatic STEP amp RAMP output Move
10. e power off EXIT MENU exits this menu immediately and saves any changes Menu will automatically exit after 30 seconds of inactivity STEPS pressing the knob will cycle from 2 3 5 steps and RAMP 2 steps will automatically switch between 4 amp 20 mA 0 amp 100 3 steps between 4 12 amp 20 mA 0 50 amp 100 5 steps between 4 8 12 16 amp 20 mA 0 25 50 75 amp 100 RAMP will continuously ramp the output between 4 amp 20 mA 0 amp 100 Practical Instrument Electronics 841 Holt Road 1 e Webster NY 14580 Tel 585 872 9350 Fax 585 872 2638 sales piecal com www piecal com Page 5 Reading Milliamp Outputs READ mA READ Percent of 4 to 20 mA Choose this function to measure from 0 000 to 52 000 milliamps or 25 00 to 300 00 1 Open the current loop at any convenient point along the signal path 2 Select mA or 4 to 20mA with slide switch 3 Select Read using slide switch 4 Connect the red input lead of the PIECAL 334Plus to the more positive Milliamp Output Signal Controller PIECAL 334 Plus omated mA Loop Calibrator point of the break and the black input to 4 33 4 Transmitter the more negative point mA OFF READ VDC wk a 4 to 20mA Signals below 0 mA or open circuits are indicated by 0 000 mA 25 00 on the display Signals above 52 mA are current limited by protection circuitry and OVERRANGE is flash
11. ed on the display POWER 2 EL CHECK ra PE 100 0 nwi SOURCE piecal com 20 00mA READ DIAL 50 mA 100V mA 2 Double Click Read DC Volts READ V Choose this function to measure from 99 99 to 99 99V DC 1 Select READ VDC with slide switch 2 Connect the red and black leads of the PIECAL a Vortag t pe measured 334Plus across the voltage source to be measured ma e Transmitter Voltage Drop 1 to 5 Volt Loops Any DC voltage from 99 99 to 99 99 volts may be Q measured Loop power supplies signal voltages at receivers batteries and transmitter voltage drops may be measured Signals exceeding 60 00 VDC are indicated by Aon the display Signals exceeding 99 99 VDC will be indicated by OVERRANGE flashing on the display READ A 72 83 Signals exceeding 60 00 VDC are indicated by A on the display Practical Instrument Electronics 841 Holt Road 1 e Webster NY 14580 Tel 585 872 9350 Fax 585 872 2638 sales piecal com www piecal com Page 6 Power amp Measure 2 Wire Transmitters mA OUT OUT Percent of 4 to 20 mA Choose this function to simultaneously supply power to a 2 Wire Transmitter while displaying the 4 to 20 mA output of the transmitter 1 Disconnect one or both input wires from the device to be calibrated 2 Select mA or 4 to 20mA with slide switch 3 Select SOURCE us
12. er supply as the power source Example 1 Disconnect the 4 20 mA control wires from the Current to Pressure I P converter or the actuator 2 Connect the PIECAL 334Plus following the connection diagrams on the previous pages for Simulate 2 Wire Transmitters 3 Move the EZ CHECK switch to 4 00 mA 0 0 and adjust the fully closed stop on the actuator 4 Turn the PIECAL 334Plus s knob slowly counterclockwise and verify that the actuator and valve don t move Repeat steps 3 amp 4 until no movement is detected 5 Move the EZ CHECK switch to DIAL and quickly back to 4 00 mA 0 0 then turn the PIECAL 334Plus s knob clockwise The actuator and valve should begin to move 6 Move the EZ CHECK switch to 20 00 mA 100 0 and adjust the fully open stop on the actuator 7 Turn the PIECAL 334Plus s knob slowly clockwise and verify that the actuator and valve don t move Repeat steps 6 amp 7 until no movement is detected 8 Move the EZ CHECK switch to DIAL and quickly back to 20 00 mA 100 0 then turn the PIECAL 334Plus s knob counterclockwise The actuator and valve should begin to move Accessories Part No 020 0100 Part No 020 0101 Part No 020 0103 AC ADAPTOR 200 to 240 VAC AC ADAPTOR 100 to 120 VAC Ni MH 1 Hour Charger w 4 Ni MH AA Batteries Warranty Our equipment is warranted against defective material and workmanship excluding batteri
13. es for a period of three years from the date of shipment Claims under warranty can be made by returning the equipment prepaid to our factory The equipment will be repaired replaced or adjusted at our option The liability of Practical Instrument Electronics PIE is restricted to that given under our warranty No responsibility is accepted for damage loss or other expense incurred through sale or use of our equipment Under no condition shall Practical Instrument Electronics Inc be liable for any special incidental or consequential damage Practical Instrument Electronics 841 Holt Road 1 e Webster NY 14580 Tel 585 872 9350 Fax 585 872 2638 sales piecal com www piecal com Page 10 PIECAL 334Plus Specifications Unless otherwise indicated all specifications are rated from a nominal 23 C 70 RH for year from calibration Operating Temperature Range 20 to 60 C 5 to 140 F 30 to 60 C 22 to 140 F 10 SRH 90 0 to 35 C Non condensing 10 SRHS 70 35 to 60 C Non condensing Size L 5 63 x W 3 00 x H 1 60 inches Storage Temperature Range Relative Humidity Range wei 240 VAC 50 60 Hz Part 020 0101 120 VAC for North America Only charger four NiMh batteries AC amp DC cords Part 020 0103 Optional AC Adaptors Optional NiMh Rechargeable battery kit Low battery indication with nominal hour of operation left Low Battery Protection against misconnection Over vol
14. ing slide switch 4 Press and turn the knob clockwise several times until full scale output transmitter input 24 000 mA 125 00 is obtained The cen er display will indicate FULL SCALE Meee lel 2Wire 5 Connect the red source lead of the rae PIECAL 334Plus to the plus input of the device and the black source lead to the minus The PIECAL 334Plus supplies a nominal 24 volts DC at 24 mA to the 2 Wire Transmitter The current passed by the transmitter will be accurately displayed by the PIECAL 334Plus Calibrate the transmitter in the usual manner and disconnect the PIECAL 334Plus If Ground Leak Detection is enabled the amount of milliamps leaking in the transmitter or loop is indicated on the display Practical Instrument Electronics 841 Holt Road 1 Webster NY 14580 Tel 585 872 9350 Fax 585 872 2638 sales piecal com www piecal com Page 7 Using Ground Leak Detection mA OUT OUT Percent of 4 to 20 mA Find current leaks in loops caused by ground faults moisture or corrosion The 334Plus simultaneously supplies power to a 2 Wire Transmitter or loop with a transmitter while displaying the 4 to 20 mA output and the amount of current leaking in the loop 1 Disconnect one or both input wires from the device to be calibrated 2 Select mA or 4 to 20mA with slide switch 3 Selec
15. le in all EZ CHECK positions When returning to the 4 00mA 0 0 and 20 00mA 100 positions they will always return to 4 00 0 0 and 20 00 100 0 mA This method is superior to keypad units The zero and full scale positions can be adjusted smoothly making easy valve end stop testing trip point testing alarm testing etc There is virtually no overshoot undershoot simplifying testing READ DC VOLTS Select READ VDC using slide switch to read volts DC Clip the leads across the voltage to be measured GROUND LEAK DETECTION when ON the 334Plus has the ability to check for current leaks caused by ground faults moisture or corrosion that bypasses the current control element or transmitter The 334Plus powers up the 2 wire transmitter or loop and indicates the total current and the uncontrolled current This provides information useful in troubleshooting loop errors Practical Instrument Electronics 841 Holt Road 1 Webster NY 14580 Tel 585 872 9350 Fax 585 872 2638 sales piecal com www piecal com Page 9 Stroking Valves SETTING UP VALVES When setting up a valve it is important to correctly set the end stops Use the PIECAL 334Plus to supply the 4 to 20 mA control signal to stroke the valve Select SOURCE and the PIECAL 334Plus will use the internal power source for outputting current or switch to 2 WIRE SIMULATOR to stroke a valve using any pre existing installed loop pow
16. librated cardinal reference points and accuracy is not defined or limited by display resolution 2 Wire Transmitter Simulation Voltage burden lt 2V at 20 mA Overload Current limit protection 24 mA nominal Loop voltage limits 2 to 100 VDC fuse less protected from reverse polarity connections Battery life 2 125 hours nominal 2 100 hrs with backlight on Voltage Read 2 125 hours nominal 2 100 hrs with backlight on Additional Information This product is calibrated on equipment traceable to NIST and includes a Certificate of Calibration Test Data is available for an additional charge Practical Instrument Electronics recommends a calibration interval of one year Contact your local representative for recalibration and repair services Practical Instrument Electronics 841 Holt Road 1 Webster NY 14580 Tel 585 872 9350 Fax 585 872 2638 sales piecal com www piecal com Page 12
17. mp BACKLIGHT Move POWER SWITCH to mA 4 to 20 mA or READ VDC The following display will appear for 3 seconds PRESS AND HOLD EZ DIAL TO ENTER SETUP MENU Press the DIAL KNOB on while this screen is displayed for basic setup options The following display will appear for 30 seconds gt EXIT MENU HART MODE AUTO OFF BACKLIGHT Turn the DIAL KNOB to move through the menu Press the DIAL KNOB to toggle between OFF and ON These settings are remembered even with the power off EXIT MENU exits this menu immediately and saves any changes Menu will automatically exit after 30 seconds of inactivity HART MODE when ON a 250 Ohm resistor is automatically inserted in series with the output This allows a HART Communicator to communicate with a HART Transmitter without adding an external resistor in the loop AUTO OFF lf AUTO OFF is ON the unit will turn off after 30 minutes of inactivity to save battery life If AUTO OFF is OFF the unit will stay on until the POWER SWITCH is moved to the off position BACKLIGHT If BACKLIGHT is ON the backlight will light all the time the unit is powered up For maximum battery life turn the backlight off when using the 334Plus in areas with enough ambient light to read the display Note All settings are remembered even with the power off Removing the batteries resets the values to factory defaults Advanced Options STEPS RAMP amp GROUND L
18. ransmitter set for upscale burnout mA is not controlled by the transmitter and is with a bad or missing sensor or a short in the leaking somewhere in the loop loop The PIECAL 334Plus is supplying the loop voltage There is an control loop error This Setting Up Ground Leak Detection Enabling Ground Leak Detection Double click the DIAL KNOB at any time the unit is on and the following display will appear for 30 seconds Turn the DIAL KNOB to move through the menu Press the DIAL KNOB to toggle between OFF and ON or to change the steps setting These settings are remembered even with the power off EXIT MENU exits this menu immediately and saves any changes Menu will automatically exit after 30 seconds of inactivity GROUND LEAK DETECTION when ON the 334Plus has the ability to check for current leaks caused by ground faults moisture or corrosion that bypass the current control element or a i Practical Instrument Electronics 841 Holt Road 1 Webster NY 14580 Tel 585 872 9350 Fax 585 872 2638 sales piecal com www piecal com Page 8 Application Notes OUT OF RANGE SIGNALS Signals below 0 mA or open circuits are indicated by 0 000 mA 25 00 on the display Signals above 52 mA are current limited by protection circuitry to approximately 54 mA KEEPING THE PROCESS GOING When an instrument in a critical control loop develops a problem it is important to maintain control of the process The PIE
19. t SOURCE using slide switch 4 Turn the knob clockwise several times until full scale output gt 24 000 mA 125 00 The display will indicate FULL SCALE and LEAKAGE 5 Connect the red source lead of the PIECAL 334Plus to the plus input of the device and the black source lead to the minus PROCESS INDICATOR 100 0 SOURCE piecalcom 20 00mA Transmitter Input 2 WIRE 4 00mA Sensor i E Process Signal Typical Simulated Input 2 Wire ans Transmitter E The PIECAL 334Plus supplies a nominal 24 volts DC at 24 mA to the 2 Wire Transmitter or loop The current passed by the transmitter will be accurately displayed by the PIECAL 334Plus along with an indication of leakage current at the bottom of the display If there is an uncontrolled loop a transmitter with upscale burnout and bad or missing sensor or a short the 334Plus displays AALOOP gt 24mA Note Many installed transmitters will normally indicate 0 01 to 0 10 mA leakage without significant control problem Unstable readings may indicate loose connections or the presence of moisture Typical Error Conditions FULL SCALE OUT 24 179 ma A LOOP gt 24mA FULL SCALE OUT 12 280 na LEAKAGE 00 28mA The PIECAL 334Plus is supplying the loop voltage A calibrated transmitter is limiting the loop current to 12 00 mA An additional 0 28 may be a t
20. tage protection to 135 vrms rated for 30 seconds or 240 vrms rated for 15 seconds Display High contrast graphic liquid crystal display with 0 315 8 0 mm high digits LED backlighting for use in low lit areas Ranges and Resolution 0 000 to 52 000 mA or 25 00 to 300 00 of 4 20 mA Accuracy Below 24 0 1mA lt 0 05 of 24 00mA 0 01mA Above 24 00mA lt 0 05 of 52 00mA 0 02mA Voltage burden lt 2V at 50 mA 54 mA nominal Battery life 2 125 Hours nominal 2 100 hrs with backlight on Overload Current limit protection Practical Instrument Electronics 841 Holt Road 1 Webster NY 14580 Tel 585 872 9350 Fax 585 872 2638 sales piecal com www piecal com Page PIECAL 334Plus Specifications continued Unless otherwise indicated all specifications are rated from a nominal 23 C 70 RH for year from calibration Source Power amp Measure Two Wire Transmitters Ranges and Resolution 0 000 to 24 000 mA or 25 00 to 125 00 of 4 20 mA Accuracy EZ Check s at 4 amp 20mA 0 025 of Span at 4 mA amp 20 mA 0 005mA 0 0 to 24 00 mA 0 05 of 24 00mA Span 0 01mA Noise lt 4 Least Significant Digit Temperature effect lt 0 005 C of FS Loop compliance voltage 2 24 DCV 20 00mA Loop drive capability 1200 Q at 20 mA for 15 hours nominal 950 Q with Hart Resistor enabled 334Plus Battery life 2 30 hrs at 12 mA nominal 2 25 hrs with backlight on These are internal ca

PIECAL 334Plus-9002 User Manual Rev A.indd

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