PR231 Portable Multifunction Calibrator

PR231 series portable multifunction calibration instrument is a multifunctional test instrument for thermal engineering. There are five basic models and two accuracy levels selected. It not only has the basic function of measurement and sim
Product Details
PR231 series portable multifunction calibration instrument is a multifunctional test instrument for thermal engineering. There are five basic models and two accuracy levels selected. It not only has the basic function of measurement and simulation for voltage, resistance, current, thermocouple, thermal resistance, frequency, pulse, etc, but also has the ability to measure the value of ρand test the standard temperature. The enhanced configuration also has the function of temperature difference testing, PID controller and pressure checking. This product design is exquisite and easy to carry, so it’s suitable for field and laboratory application. It is the preferred equipment for thermal measurement industry.

1. Technical features
(1) Powerful man-machine interface. The operation process is more humanity.
(2) Internal and external reference junction temperature compensation. On the basis of the built-in high precision temperature sensor, this product provides an external Pt100 platinum resistance interface of grade A and it can be corrected by a test certificate for the numerical value.
(3) Function of temperature difference test. Users can directly measure the temperature difference between two standard thermocouple or two standard thermal resistance sensor and reference the certificate value to do data correction with it.
(4) Standard temperature measurement. This product can be used to calibrate the standard thermocouple thermometer and standard platinum resistance thermometer to test or calibration certificate value, so that the measurement results can be traced.
(5)  The duty cycle of the periodic square wave signal can be measured.
(6) Function of precision temperature control. After the thermocouple or thermal resistance and the solid-state relay is circumscribed to the instrument, it can be used for precise temperature control for all kinds of test furnace, constant temperature trough and other heating equipment.
(7) Thermal calculator and other auxiliary tools.
(8) Record function. No paper record on the spot can be realized.
(9) RS-232/USB2.0 communication connection. It can be combined with the computer and the special software of the company, which is a powerful secondary instrument calibration system.




2. Performance index
General technical parameters


Weight 990g charging power 100~240V AC,50~60Hz
Size 225mm*130mm*53mm Working temperature -10℃~50℃
Cell type 7.4V 4400mAh, Rechargeable lithium battery Working hours Over 20 hours(Turn off 24V power supply)
Preheating time 10 minutes after preheating Humidity 0~80%,Non condensing
Charging time 5 hours Calibration period 1 year
Important technical parameters
Basic parameters of measurement


Function Range Measurement range Resolution 0.01 accuracy 0.02 accuracy Remarks
Voltage 100mV -5mV~120mV 0.1uV 0.005%RD 5uV 0.015%RD
5uV
Input impedance
≥80mΩ
1V -50mV~1.2V 1uV 0.005%RD 0.005%FS 0.015%RD
0.005%FS
10V -0.5V~12V 10uV Input impedance
≥1mΩ
50V -0.5V~50V 0.1mV
Current 50mA -5mA~50 mA 0.1uA 0.005%RD 0.005%FS 0.015%RD
0.005%FS
Internal resistance =10Ω
Ohm 50Ω 0Ω~50Ω 0.1mΩ 0.005%RD 5mΩ 0.015%RD
5mΩ
Output 1mA current
500Ω 0Ω~500Ω 1mΩ 0.005%RD 0.005%FS 0.015%RD
0.005%FS
5kΩ 0kΩ~5kΩ 10mΩ Output 0.1mA current
Thermalcouple S、R、B、K、N、J、E、T、EA2、Wre3-25、Wre5-26 0.1℃ Table 1 According to ITS-90 scale
Cold end compensation Internal -10℃~60℃ 0.01℃ 0.5℃ 0.5℃
External 0.1℃ 0.1℃
Thermal resistance Pt10、Pt100、Pt200、Cu50、Cu100、BA1、BA2、JPt100、Pt500、 Pt1000 0.01℃ Table 2
Standard temperature S、R、B、T、SPt25、SPt100 0.01℃ Table 3 Need to enter the correction value
ρ-value 50S 0.001%~99.999% 0.001% 0.005% 0.005% Input pulse width amplitude range:1V~50V
Frequency 10Hz 0.001Hz~12 Hz 0.001Hz 0.01%FS 0.01%FS
1kHz 0.00001kHz~1.2 kHz 0.01Hz
100kHz 0.01kHz~120 kHz 10Hz 0.1%FS 0.1%FS
Temperature difference S、R、B、K、N、J、E、T 0.01℃ Table 4 Need to enter the correction value
SPt25、SPt100 0.001℃



The basic parameters of the output function

Function Range Measurement
range
Resolution 0.01 accuracy 0.02 accuracy Remarks
Voltage 100mV -20mV~120mV 1uV 0.005%RD 5uV 0.015%RD 5uV Maximum load current =2.5mA
1V -0.2mV~1.2V 10uV 0.005%RD 0.005%FS 0.015%RD 0.005%FS
10V -2V~12V 0.1mV
Current 30mA -5mA~30 mA 1uA 0.005%RD 0.005%FS 0.015%RD 0.005%FS Maximum load voltage =24V
Ohm 50Ω 0Ω~50Ω 0.1mΩ Table 5 According to ITS-90 scale
500Ω 0Ω~500Ω 1mΩ
5kΩ 0kΩ~5kΩ 10mΩ
Thermalcouple S、R、B、K、N、J、E、T、EA2、Wre3-25、Wre5-26 0.1℃ Table 1
Thermal resistance Pt10、Pt100、Pt200、Cu50、Cu100、BA1、BA2、JPt100、Pt500、 Pt1000 0.01℃ Table 6
Frequency /Pulse 10Hz 0.001Hz~
12 Hz
0.001Hz 0.01%FS 0.01%FS Maximum load current =2.5mA
1kHz 0.00001kHz~
1.2 kHz
 
0.01Hz
100kHz 0.01kHz~120 kHz 10Hz 0.1%FS 0.1%FS
Precision temperature control S、R、B、K、N、J、E、T 0.01℃ Table 7
Pt100
24V output Maximum voltage error: 0.3V   Ripple noise:35mVp-p(20MHz bandwidth)
Maximum load current:70mA  Load regulation: 0.5%(10% -100% load change)

 Table 1

Range Measuring /Number-setting range 0.01 accuracy 0.02 accuracy Remarks
S -50.0℃~1768.0℃ 0.9℃ In accordance with the 90national standard scale
 
 
 
Reference junction compensation error is not included inthe accuracy
R
B 250.0℃~1820.0℃
K -150.0℃~1300.0℃ 0.01%RD 0.1℃ 0.02%RD 0.1℃
N -200.0℃~1300.0℃ 0.2℃ 0.01%RD 0.2℃
J -100.0℃~900.0℃ 0.1℃ 0.01%RD 0.1℃
E -90.0℃~700.0℃
T -150.0℃~400.0℃ 0.15℃
EA2 -45.0℃~800.0℃ 0.1℃ 0.01%RD 0.1℃
Wre3-25 0.0℃~1500.0℃ 0.5℃
Wre5-26 0.0℃~1500.0℃ 0.4℃ 0.01%RD 0.4℃

Table 2

Range Measurement range 0.01 accuracy 0.02 accuracy Remarks
Pt10 -200.00℃~800.00℃ 0.01%RD 0.15℃ 0.025%RD 0.15℃  
Pt100 0.01%RD 0.07℃ 0.02%RD 0.07℃ The measurement methods of four wire system
Pt200 -200.00℃~400.00℃ 0.007%RD 0.05℃ 0.02%RD 0.05℃
Pt500 -200.00℃~800.00℃ 0.01%RD 0.15℃ 0.025%RD 0.15℃
Pt1000 0.01%RD 0.07℃ 0.02%RD 0.07℃
Cu50 -45.00℃~145.00℃ 0.005%RD 0.13℃ 0.03%RD 0.13℃
Cu100 0.005%RD 0.07℃ 0.03%RD 0.07℃
BA1 -200.00℃~800.00℃ 0.01%RD 0.1℃ 0.02%RD 0.1℃
BA2 0.01%RD 0.07℃ 0.02%RD 0.07℃
JPt100





Table 3

Range Measurement range 0.01 accuracy 0.02 accuracy
S -50.0℃~1768.0℃ 0.9℃
R
B 250.0℃~1820.0℃
T -150.0℃~400.0℃ 0.15℃
SPt25 -200.0℃~800.0℃ 0.01%RD 0.07℃ 0.02%RD 0.07℃
SPt100

 
Table 4

Range Measurement range 0.01 accuracy 0.02 accuracy
S -50.0℃~1768.0℃ 0.1℃
R
B 250.0℃~1820.0℃
K -150.0℃~1300.0℃ 0.03℃
N -200.0℃~1300.0℃
J -100.0℃~900.0℃
E -90.0℃~700.0℃
T -150.0℃~400.0℃
SPt25 -200.0℃~800.0℃ 0.003℃
SPt100
 
Table 5

Range 0.01 accuracy 0.01 accuracy Excitation currentmA Remarks
50Ω 0.005%RD 15mΩ 0.015%RD 20mΩ 2.4~0.6 Allowable currentexcitation range
2.4~0.3mA
0.01%RD 25mΩ 0.025%RD 50mΩ 0.6~0.3
500Ω 0.005%RD 0.005%FS 0.015%RD 0.005%FS 2.4~0.6 Allowableexcitation current range
2.4~0.1mA
0.005%RD 0.01%FS 0.015%RD 0.01%FS 0.6~0.3
0.01%RD 0.015%FS 0.025%RD 0.015%FS 0.3~0.1
5kΩ 0.005%RD 0.01%FS 0.015%RD 0.01%FS 0.24~0.06 Allowableexcitation current range
0.24~0.03mA
0.01%RD 0.015%FS 0.025%RD 0.015%FS 0.06~0.03
 
Table 6

Range Measurement range 0.01 accuracy 0.02 accuracy Remarks
Pt10 -200.00℃~800.00℃ 0.015%RD 0.4℃ 0.03%RD 0.5℃ Test condition:
1mA excitation current
Pt100 0.01%RD 0.07℃ 0.02%RD 0.07℃
Pt200 -200.00℃~400.00℃ 0.007%RD 0.05℃ 0.02%RD 0.05℃
Pt500 -200.00℃~800.00℃ 0.015%RD 0.25℃ 0.025%RD 0.25℃ Test condition:
0.1mA excitation current
Pt1000 0.01%RD 0.15℃ 0.02%RD 0.15℃
Cu50 -45.00℃~145.00℃ 0.005%RD 0.13℃ 0.03%RD 0.13℃ Test condition:
1mA excitation current
Cu100 0.005%RD 0.07℃ 0.03%RD 0.07℃
BA1 -200.00℃~800.00℃ 0.01%RD 0.13℃ 0.02%RD 0.13℃
BA2 0.01%RD 0.07℃ 0.02%RD 0.07℃
JPt100
 
 
Table 7

Range Measurement range 0.01 accuracy 0.02 accuracy Remarks
S -50.0℃~1768.0℃ 0.9℃ In accordance with the 90 national standard scale
 
Reference junction compensation error is not included in the accuracy
R
B 250.0℃~1820.0℃
K -150.0℃~1300.0℃ 0.01%RD 0.1℃ 0.02%RD 0.1℃
N -200.0℃~1300.0℃ 0.2℃ 0.01%RD 0.2℃
J -100.0℃~900.0℃ 0.1℃ 0.01%RD 0.1℃
E -90.0℃~700.0℃
T -150.0℃~400.0℃ 0.15℃
Pt100 -200.0℃~800.0℃ 0.01%RD 0.07℃ 0.02%RD 0.07℃ The lead error is not included in the three wire measurement accuracy.
 
Model selection table

Model PR231A-1 PR231A-2 PR231B-1 PR231B-2
enhancement model    
basic model    
0.01 grade    
0.02 grade     ●  


CONTACT US

  • E-mail: panran@cspanran.com
  • Tel: 0086 73189717319 0086 13787123465
  • Skype: Hyman3465
  • Address: No. 2112, Bldg. 8, Jiajing Plot, No. 159, Luyun Road, High-Tech Development Zone, Changsha, Hunan, China
  • Wechat: cspanran(13787123465)
  • *name
  • *email
  • content