ZXTX-2025
Multifunction Process Calibrator
Users Manual
Wuhan GDZX Power Equipment Co., Ltd.
Page 1: ...ZXTX 2025 Multifunction Process Calibrator Users Manual Wuhan GDZX Power Equipment Co Ltd ...
Page 2: ... 3 3 Current Measurement with Loop Power 9 3 4 Resistance measure and continuity test 10 4 Functions of Lower Display 11 4 1 Measure and Source of DC V and DC mV 11 4 2 DC mA Measurement 11 4 3 DC mA Source active 12 4 4 Simulating a 4 to 20 mA Transmitter 13 4 5 Measure and Source of Resistane 14 4 6 Measure and Source of Frequency 15 5 Temperature Measurement 17 5 1 Using Thermocouples TC 17 5 2...
Page 3: ...ltage Measurement 28 9 2 DC Voltage Source 28 9 3 DC mA measurement 29 9 4 DC mA source 29 9 5 Resistance Measurement upper display 29 9 6 Resistance measurement lower display 30 9 7 Resistance source 30 9 8 Frequency measurement 31 9 9 Frequency source 31 9 10 Temperature thermocouples 31 9 11 Temperature RTD 32 10 Product Accessories 33 10 1 Standard Accessories 33 10 2 Optional Accessories 33 1...
Page 4: ... end temperature compensation for TC Manual stepping and automatic stepping and ramping Super strong protection The waterproof grade is IP67 Automatic protection against the signal terminals connect to the 220V Support for PC communication 1 2 Summary of Source and Measure Functions Function Measure Source DC V 0 50V the upper display 30V 0 10V DC mA 0 24mA the upper display 24mA 0 24mA Frequency ...
Page 5: ...ce and supplying loop power The two terminals electrical isolate from the other terminals Measure and Source V mV Hz Ω TC and RTD terminals Terminals for sourcing or measuring voltage resistance frequency RTD and TC is the common Terminal Measure and Source mA and 3W for Ω terminals Terminals for sourcing or measuring current and the terminal is also used for the measure of 3W resistance Source mA...
Page 6: ...er display 5 Turns backlight on or off Turns Contrast Adjust mode on when powering up 6 Selects DC mV or resistance measurement function in the lower display 7 Selects the range of source function in the lower display 8 Saves the calibrator setup Saves Contrast Adjust setup 9 Retrieves a previous calibrator setup from a memory location 10 Increases or decreases the source level 11 Cycles through S...
Page 7: ...16 Cycles the calibrator through MEASURE and SOURCE modes in the lower display 17 Selects TC thermocouple measurement and sourcing function in the lower display Repeated pushes cycle through the thermocouple types 18 Selects current or transducer SIM function 19 Selects RTD resistance temperature detector measurement and sourcing function in lower display Repeated pushes cycle through the RTD type...
Page 8: ...X 1825 Proceed as follows to perform a voltage to voltage test 1 Connect the calibrator s the voltage output to its voltage input as shown in Figure 2 1 1 Figure 2 1 1 2 Press more than 2 seconds to turn on the calibrator The screen will display all the contents for 1 second as shown in Figure 2 1 2 Figure 2 1 2 ...
Page 9: ...en The screen will display as shown in Figure 2 1 5 Figure 2 1 5 6 Press or to increase or decrease 1 of the number that locates at the line the number automatic carry but the position of the line have no change Press or to select a digit to change 7 Press to select 1 V for the output value and then press and hold until the buzzer work to enter 1V as the 0 value 8 Press to select 5 V for the outpu...
Page 10: ...t key was pressed To disable the Shut Down mode press and simultaneously To enable the mode press and simultaneously To adjust the time duration press and simultaneously the screen will display as shown in Figure 2 2 1 then press and or to adjust the time between 1 and 30 minutes and press to store the new duration time Without pressing any key for 5 seconds the calibrator will exit automatically ...
Page 11: ...s and to adjust the brightness of backlight 3 Press to save brightness level will appear and then the calibrator will enter into the work mode Without pressing any key for 5 seconds the calibrator will exit automatically ...
Page 12: ... sign should not be displayed and connection is same to that of DC V measurement 3 3 Current Measurement with Loop Power The loop power function activates a 24 V supply in series with the current measuring circuit allowing you to test a transmitter when it is disconnected from plant wiring To measure current with loop power proceed as follows 1 Connect the calibrator to the transmitter current loo...
Page 13: ...inuity test Press to select resistance measurement or continuity test function circularly with the unit of Ω and the connection is the same as DC V measurement In the continuity test function the buzzer works when the measured value less than 50Ω ...
Page 14: ... The lower display default function is DC V measurement after trun on If necessary press or to select DC V or DC mV function and press to switch measure and source mode The connection is shown in Figure 4 1 1 Figure 4 1 1 4 2 DC mA Measurement Press to select mode press to select DC mA measuring function with the unit of The connection is shown in Figure 4 2 1 ...
Page 15: ...calibrator can implement current output The connection is shown in Figure 4 3 1 Figure 4 3 1 When the output load is too heavy sign will appear in the display as shown in Figure 4 3 2 and at the same time the main value of lower display will flash which means that the actual output current cannot reach the set value so you should ...
Page 16: ... which the calibrator is connected into a loop in place of a transmitter and supplies a known settable test current Proceed as follows 1 Connect the 24 V loop power source as shown in Figure 4 4 1 2 If necessary press to select mode 3 Press until and simulation are displayed in the screen Figure 4 4 1 Loop Power Supply Display device ...
Page 17: ...Attention Over range indicate when the connection open Resistance measurement supports the connection types of two wire three wire and four wire The calibrator can be switched to three wire or four wire according to actual connecting type The respective connecting types are shown in Figure 4 5 2 Figure 4 5 2 Press or to select a 2 3 or 4 wire connection and then the calibrator will ...
Page 18: ...rement Press to switch resistance output range Resistance source includes 400 range and 3200 range as shown in Figure 4 5 3 and Figure 4 5 4 Figure 4 5 3 Figure 4 5 4 Attention The Figure 4 5 3 is 400 range and the Figure 4 5 4 is 3200 range 4 6 Measure and Source of Frequency Measure Press to select mode press to select frequency its unit is The connection is same to DC V measurement The screen w...
Page 19: ...ess to select frequency its unit is The connection is same to DC V measurement Press to select source range The screen will display as shown in Figure 4 6 2 Figure 4 6 2 Attention The left is of 200 00Hz range and the right is of 20 000kHz range ...
Page 20: ...erial Specified Range E Chromel Constantan 200 950 N Ni Cr Si Ni Si Mg 200 1300 J Iron Constantan 200 1200 K Chromel Alumel 200 1370 T Copper Constantan 200 400 B Platinum 30 rhodium Platinum 6 rhodium 600 1800 R Platinum 13 rhodium Platinum 20 1750 S Platinum 10 rhodium Platinum 20 1750 L Iron Constantan 200 900 U Copper Constantan 200 400 To measure temperature using a thermocouple proceedas fol...
Page 21: ... Press to select mode 3 Press for the TC display If desired continue pressing this key to select the desired thermocouple type as shown in Figure 5 1 2 Figure 5 1 2 4 Press to display the DC mV value reading as shown in Figure 5 1 3 The DC mV value continue to display for 3s and then automatically return to the original display Figure 5 1 3 There are two kinds of cold end temperature compensation ...
Page 22: ...tion If you need further view current automatic cold end temperature compensation value you have to operation key Reading as shown in Figure 5 1 1 1 after press key the sign is replaced for current automatic cold end temperature compensation value as The value continue to display for 2s and then automatically return to the sign Figure 5 1 1 1 5 1 2 Manual compensation Manual compensation through t...
Page 23: ...key return to automatic compensation 5 2 Using Resistance Thermometer Detector RTD The calibrator accepts RTD types of Pt100 Pt1000 Cu50 and Cu100 The calibrator accepts RTD measurement inputs in two three or four wire connections with the three wire connection the most common A four wire configuration provides the highest measurement precision and two wire provides the lowest measurement precisio...
Page 24: ...mode 2 Press for the RTD display If desired continue pressing this key to select the desired RTD type 3 The calibrator can detect the connecting type automatically and you can Press or to select a 2 3 or 4 wire manually ...
Page 25: ...ect the thermocouple to the TC input output plughole of the calibrator 2 If necessary press to select mode 3 Press for the TC display If desired continue pressing this key to select the desired thermocouple type 4 Enter the temperature you want by pressing and keys Press or keys to select a different digit to edit Figure 6 1 1 5 Press to display the DC mV value The DC mV value continue to display ...
Page 26: ...panel To be connected to a third wire or Fourth wire transducer folding cable can be sued to used as extra wiring 1 If necessary press to select mode 2 Press for the RTD display If desired continue pressing this key to select the desired RTD type 3 Enter the temperature you want by pressing and keys Press or keys to select a different digit to edit 4 In case that the calibrator displays or the exc...
Page 27: ...requency 20 kHz 0 000 kHz 20 000 kHz TC J model 0 0 1000 0 TC K model 0 0 1000 0 TC T model 0 0 400 0 TC E model 0 0 800 0 TC R model 0 1500 TC S model 0 1500 TC B model 600 1800 TC N model 0 0 1000 0 Pt100 0 0 500 0 Pt1000 0 0 400 0 Cu50 0 0 150 0 Cu100 0 0 150 0 The default set values may not meet your requirements so you can reset them Press and hold or to reset 0 and 100 value until the buzzer...
Page 28: ... working modes recover to DC V measurement function Automatic shutdown time is reset to be 30 min and becomes effective LCD backlight brightness is reset to be 60 Output range is recovered to be factory default Press and simultaneously until the buzzer work and the factory reset is executed 7 4 Calibrating a Transmitter Use the measurement upper display and source lower display modes to calibrate ...
Page 29: ... parameters by pressing and keys Enter these parameters by pressing and holding and For more information on 5 setting parameters see Setting 0 and 100 earlier in this manual 6 Perform test checks at 0 25 50 75 100 points by pressing or Adjust the transmitter as necessary Figure 7 4 1 red black ...
Page 30: ...inted at the remaining electric quantity is less than 20 Charge is necessary for normal operation of the calibrator The LCD backlight will start operation and the will display on the screen when the power adaptor is used If the battery indicator flashes the calibrator will be in the charging process after which the battery indicator will stop flashing The calibrator will stop charge automatically ...
Page 31: ... 001mV 0 05 20 0 025 20 200mV 200mV 0 01mV 0 05 2 0 025 2 50V lower display 1V 60V 0 001V 0 05 2 0 02 2 100mV lower display 15mV 80mV 0 001mV 0 05 20 0 02 20 80mV 125mV 0 01mV 0 05 2 0 02 2 10 18 28 55 temperature coefficient 0 005 FS Input resistance 1MΩ 9 2 DC Voltage Source Range Maximum output range Resolution Accuracy of reading counts ZXTX 1825 ZXTX 2025 100mV 15mV 99 999mV 0 001mV 0 05 20 0...
Page 32: ... FS Input resistance 100Ω 9 4 DC mA source Range Maximum output range Resolution Accuracy of reading counts ZXTX 1825 ZXTX 2025 20mA 0 24mA 0 001mA 0 05 2 0 02 2 20mA Transducer simulation 0 24mA 0 001mA 0 05 2 0 02 2 10 18 28 55 temperature coefficient 0 005 FS Maximum load voltage 20V equivalent to voltage of 20mA on 1000Ω load resistance 9 5 Resistance Measurement upper display Range Maximum ou...
Page 33: ...440Ω 0 01Ω 0 25 0 15 0 15 0 10 3200Ω 420Ω 3600Ω 0 1Ω 1 5 1 0 1 0 0 5 10 18 28 55 temperature coefficient 0 005 FS Exciting current during measurement 400Ω 0 4mA 10 3200Ω 0 2mA 10 Two wire Does not include lead resistance Three wire Assumes matched leads with a total resistance not exceeding 25Ω 9 7 Resistance source Range Maximum output range Resolution External exciting current Accuracy Ω ZXTX 18...
Page 34: ...e 5 counting points should be added to errors of other wave forms Commercial frequency can be measured directly 9 9 Frequency source Range Maximum output range Resolution Accuracy of reading counts ZXTX 1825 ZXTX 2025 200Hz 0 200Hz 0 01Hz 0 02 1 0 01 1 2000Hz 0 2000Hz 0 1Hz 20kHz 0 20kHz 1Hz Output amplitude 4 5Vp p Wave form Square wave 9 10 Temperature thermocouples Graduation Range Resolution A...
Page 35: ... RTD Graduation Range Resolution Accuracy ZXTX 1825 ZXTX 2025 2 wire 3 wire 4 wire Output 2 wire 3 wire 4 wire Output Pt100 200 850 0 1 0 7 0 4 0 7 0 4 0 3 0 3 Pt1000 200 650 0 4 0 3 0 3 0 3 0 15 0 15 Cu50 50 150 1 2 0 8 0 8 0 8 0 5 0 5 Cu100 50 150 0 7 0 4 0 4 0 4 0 25 0 25 As for exciting current during measurement please refer to resistance measurement function As for allowable external excitin...
Page 36: ...calibrator also includes the following hard spot test leads two sets alligator clips two sets One 12V 1A power adaptor ZXTX 2025 ZXTX 1825 Users Manual Figure 10 1 1 10 2 Optional Accessories 6 R03 model rechargeable batteries 1 Metal Box Communication line Hard spot test leads Alligator clip ...
Page 37: ...aged test line before using Do not touch the metal contact when the detector is used Connect the common line and then electric test line As for wire removal electric test line should be removed first Don t use the calibrator under any abnormal conditions Calibrator should be repaired because it may have been damaged Don t use the calibrator near explosive gases Remove test line before changing mea...
