(discontinued)
5 1/2 Digit Display Cold Junction Compensation Process Calibrator
Part No: HT824
Features
-=The calibrator is professional Instruments with High accuracy, high stability.
It is widely used in s calibration of industry instruments and equipment in laboratory.
With multifucntion it can simulate to output voltage in millivolt and volt,
current in milliampere, and many types of electric signals needed by the measurement
and control during industry control process. It can also test or simulate kinds of TC
and RTD signals.
–5 1/2 digit input/output display.
–Manual/auto cold junction compensation and setting.
–The temperature value can be directly measured/output.
–Auto power off when the voltage of battery is low.
–Apply advanced built-in battery management system. 7.4V/7800mAh lithium
battery, which can easily last for over 8 hours during site measuring work.
–Auto triangular wave/step wave signal output.
–It can store 8 sets of measurement and output data, and recall it to display.
–All the setting value and the function in the last operation can be saved automatically
after power-off.
–The screen shows the connection diagram of probes and plugs to avoid wrong operation.
–The output has manual/auto step and slope output function. It can arbitrarily
set the value of 0%, 25%, 100% in the range of signal output to test the response
speed of transmitter.
–Application field: measurement and calibration of instruments, maintenance
And overhaul of temperature instruments, automatically maintenance and
overhaul, project construction debugging, detection and diagnosis of control
system signal source, configuration of site instrument repairmen room,
matching of the thermal engineering laboratory in electric power industry.
Specification:
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Model |
HT824 |
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DC Voltage Measurement |
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Range |
0-30.000V（Upper part of screen）*1 |
0-24.000V（Bottom of screen）*2 |
0-90.000mV |
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Resolution |
0.001V |
0.001V |
0.001mV |
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Accuracy |
0.1%+5 |
0.05%+5 |
0.05%+5 |
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*1 and *2：Input resistance is greater than 1MΩ |
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DC Voltage Output |
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Range |
0—20.000V |
0—90.000mV |
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Resolution |
0.001V |
0.001mV |
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Accuracy |
0.05%+5 |
0.05%+5 |
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Millivolt measurement and output*1 |
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Range |
-10.000mV—80.000mV |
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Resolution |
0.001mV |
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Accuracy |
0.05%+5 |
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*1 Press TC(16) to select this function. Signal is at thermocouple micro input/output TC port. |
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DC Current (milliampere) Measurement |
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Range |
0—24.000mA（Upper part of screen）*1 |
0—24.000mA（Bottom of screen）*2 |
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Resolution |
0.001mA |
0.001mA |
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Accuracy |
0.05%+5 |
0.05%+5 |
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DC Current (milliampere) Output |
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Range |
0—24.000mA |
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Resolution |
0.001mA |
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Accuracy |
0.05%+5 |
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SIMU（Simulation）When outputting current, external voltage is greater than 12V, less than 28V. |
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SOUR（Source）When outputting current, signal driving ability is 1000Ω in 20mA. |
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Resistance Measurement |
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| Ohm Range |
0—400.00Ω |
400.0—4000.0Ω |
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Accuracy ±Ω |
4 Wire（4W） |
0.02%+5 |
0.02%+5 |
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2 Wire（2W）and 3 Wire（3W） |
0.05%+5 |
0.05%+5 |
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Excitation current：0.2mA。 |
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Maximum input voltage：30V。 |
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2 Wire：Do not include wire resistance. |
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3 Wire：Assume to use the matched testing wire, the total resistance cannot be greater than 100Ω. |
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Resistance output |
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Range |
5.00Ω―400.00Ω |
400.0―1500.0Ω |
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Excitation current from the measurement instrument |
0.15mA-2mA |
0.05mA-0.8mA |
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Accuracy ±Ω |
0.05%+5 |
0.05%+5 |
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Resolution |
0.1Ω |
0.1Ω |
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Temperature – Thermocouple |
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Type |
Range |
Resolution |
Measurement and output accuracy ±℃ |
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S |
-50.0℃ to 0℃ |
0.1℃/0.1℉ |
2℃ |
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0℃ to 500.0℃ |
0.1℃/0.1℉ |
1.5℃ |
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500.0℃ to 1760.0℃ |
0.1℃/0.1℉ |
1.3℃ |
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R |
-50.0℃ to 0℃ |
0.1℃/0.1℉ |
2℃ |
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0℃ to 500.0℃ |
0.1℃/0.1℉ |
1.5℃ |
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500.0℃ to 1760.0℃ |
0.1℃/0.1℉ |
1.3℃ |
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B |
200℃ to 800℃ |
1℃/1℉ |
2.5℃ |
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800℃ to 1800℃ |
1℃/1℉ |
2.3℃ |
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K |
-200.0℃ to 1370.0℃ |
0.1℃/0.1℉ |
1.3℃ |
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N |
-200.0℃ to 1300.0℃ |
0.1℃/0.1℉ |
1.3℃ |
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E |
-200.0℃ to 1000.0℃ |
0.1℃/0.1℉ |
1℃ |
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J |
-200.0℃ to 1200.0℃ |
0.1℃/0.1℉ |
1℃ |
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T |
-200.0℃ to 400.0℃ |
0.1℃/0.1℉ |
1℃ |
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Thermocouple adopts ITS-90 |
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If open cold junction compensation, there should be additional ±0.5℃ |
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Temperature – Thermal resistance |
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Type |
Accuracy ±℃ | ||||
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Range |
Testing 4 wire ℃ |
Testing 2 wire and 3 wire ℃ |
Output ℃ |
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Pt100-385 |
-200.0℃-850.0℃ |
0.8℃ |
1℃ |
0.8℃ |
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Pt100-3926 |
-200.0℃-850.0℃ |
0.8℃ |
1℃ |
0.8℃ |
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Pt100-JIS |
-200.0℃-850.0℃ |
0.8℃ |
1℃ |
0.8℃ |
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Pt200-385 |
-200.0℃-250.0℃ |
0.7℃ |
0.8℃ |
0.7℃ |
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250.0℃-630.0℃ |
1.3℃ |
2.1℃ |
1.3℃ |
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Pt500-385 |
-200.0℃-500.0℃ |
0.8℃ |
1.1℃ |
0.8℃ |
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500.0℃—630.0℃ |
1℃ |
1.5℃ |
1℃ |
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Pt1000-385 |
-200.0℃-100.0℃ |
0.7℃ |
0.7℃ |
0.8℃ |
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100.0℃-630.0℃ |
0.7℃ |
0.8℃ |
0.8℃ |
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Cu100 |
-50.0℃-150.0℃ |
1℃ |
1.2℃ |
1℃ |
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Cu50 |
-50.0℃-150.0℃ |
1℃ |
1.2℃ |
1℃ |
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Resolution: 0.1°C, 0.1°F |
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Allowable excitation current(output): Pt100-385, Pt100-392, Pt100-JIS, Pt200-385:0.15 to 3.0 mA |
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Pt500-385:0.05 to 0.80mA;Pt1000-385:0.05 to 0.40mA |
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2 Wire：Do not include wire resistance. |
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3 Wire：Assume to use the matched testing wire, the total resistance cannot be greater than 100Ω. |
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Comprehensive Index |
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Operation temperature |
0℃ to 50℃ |
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Storage temperature |
-20℃ to 70℃ |
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Operation height |
Average elevation 3000 meters below. |
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Relative humidity (No condensation relative work humidity %) |
75%(30℃ to 40℃) |
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45%(40℃ to 50℃) |
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35%(50℃ to 55℃) |
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<10℃, no control |
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Stability |
Out of the range 23±5℃, each degree increase ±0.005% of the range. |
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Vibration |
The random vibration, 2g,5 to 500Hz |
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Security |
EN 61010-1:1992 |
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Protection Level |
Pollution grade Ⅱ |
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