Geokon 8020-42 Скачать руководство пользователя страница 6

 

 

2. CONNECTIONS 

 

Connector 

Position 

Signal 

Name 

Signal  

Description 

Type 

Level (typ.) 

Temperature Proportional Voltage 

Output 

0 – 5 VDC 

F1 

Vibrating Wire Gage Frequency  

Output 

200mv(pp) 

EX 

Swept Frequency 
Thermistor Excitation 

Input 

 

5V CMOS  

0-5VDC (max) 

+12V 

+12V Power Supply 

Power Input 

5.5 – 15.0 VDC 

(+12V nominal) 

GND 

Ground 

Power Input 

0V 

T+ 

3k

 @ 25

°

 C Ther input 

Input 

0 – 5 VDC (max) 

T- 

3k

 @ 25

°

 C Thermistor – input 

Input 

0 – 5 VDC (max) 

C+ 

Vibrating wire Gage Coil + 

Input / Output 

1mv(pp) / 4v(pk) 

C- 

Vibrating wire Gage Coil - 

Input / Output 

1mv(pp) / 4v(pk) 

10 

ENABLE 

Enable (Micro-10 configuration) 

Input  

5V CMOS 

11 

CLOCK 

Clock (Micro-10 configuration) 
Enable (Generic Datalogger configuration) 

Input  

5V CMOS 

12 

F2 

Vibrating Wire Gage Frequency  

Output 

5V(pp) @ 50

 

Table 1 - Connector/Signal Description 

 

NOTE:

 Because the 8020-42 requires each vibrating wire gage to have its own pair of twisted 

leads, the 8020-42 is not compatible with Geokon models 4900 (VW Load Cell) and 4350-3 
(Biaxial Stressmeter). 
 
 
 

 

Содержание 8020-42

Страница 1: ...any means without the written consent of Geokon Inc The information contained herein is believed to be accurate and reliable However Geokon Inc assumes no responsibility for errors omissions or misin...

Страница 2: ......

Страница 3: ...e are no warranties except as stated herein There are no other warranties expressed or implied including but not limited to the implied warranties of merchantability and of fitness for a particular pu...

Страница 4: ...PER SETTINGS FOR MICRO 10 CONFIGURATION 3 FIGURE 3 INTERNAL JUMPER SETTINGS FOR GENERIC DATALOGGER CONFIGURATION 4 FIGURE 4 INTERNAL JUMPER SETTINGS FOR STAND ALONE CONFIGURATION 5 TABLES TABLE 1 CONN...

Страница 5: ...read the gage frequency with a general purpose frequency counter or low cost datalogger instead of a complex dedicated readout device or datalogger Historically autoresonant vibrating wire gages have...

Страница 6: ...7 T 3k 25 C Thermistor input Input 0 5 VDC max 8 C Vibrating wire Gage Coil Input Output 1mv pp 4v pk 9 C Vibrating wire Gage Coil Input Output 1mv pp 4v pk 10 ENABLE Enable Micro 10 configuration Inp...

Страница 7: ...ve multiplexer and the individual channels are clocked by pulsing C8 CLOCK high When ENABLE and CLOCK are both high the 8020 42 will wake up and wait for the swept frequency excitation signal to appea...

Страница 8: ...e incorporated as the vibrating wire interface for any datalogger that is capable of reading a frequency input and has the ability to output a single 5V CMOS level control signal In order to configure...

Страница 9: ...or 8 C Vibrating wire Gage Coil From VW gage 9 C Vibrating wire Gage Coil From VW gage 10 ENABLE Enable Micro 10 configuration N A 11 CLOCK Clock Micro 10 configuration Enable Generic Datalogger confi...

Страница 10: ...pply 12V 5 GND Ground Ground 6 T 3k 25 C Thermistor input From Thermistor 7 T 3k 25 C Thermistor input From Thermistor 8 C Vibrating wire Gage Coil From VW gage 9 C Vibrating wire Gage Coil From VW ga...

Страница 11: ...1150 4500 Hz Internally Generated Fsweep Frequency start 400 Hz Frequency end 4500 Hz Sweep Duration 750 mSec Sweep Shape Linear Frequency Outputs F1 200mV pp 1k AC coupled F2 5V pp 50 AC coupled Ther...

Страница 12: ...r note Rint1 5k and Rint2 1k are internal to the SCA I th T Rint1 I th 1 4185V 5 000 I th 283 7 uA 2 Determine the resistance Rth of the gage thermistor R th EX T I th Rint2 R th 2 5 1 4185 283 7E 6 1...

Страница 13: ...3 127 60 17K 32 6576 8 1167 48 292 4 88 94 9 128 56 51K 31 6265 9 1123 49 283 5 89 92 5 129 53 10K 30 5971 10 1081 50 274 9 90 90 2 130 49 91K 29 5692 11 1040 51 266 6 91 87 9 131 46 94K 28 5427 12 10...

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