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Work conditions:

  • by contract
  • full-time   
Please submit your CV to:

mark@yetri.am

info@yetri.am 

Phone:(+37410)566061 

 

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Products

 THIN-FILM TEMPERATURE SENSORS

We propose the thin film temperature sensors made ​​on the basis of the platinum resistor and having long term stability, durability and reproducible of performance. It is used for precise temperature control of processes.

 

SPECIFICATIONS

Temperature range of  measurements  minus 200…+1000 0С 
Sensor’s resistance at ТENV = 00С (R0)100,  200, 500, 1000 Ohm 
Temperature coefficient of sensor (αT) 0,00385 ± 0,63 x 10-4 
Spread at R0 minus 0,6 …+ 0,2 % 
Response time 0,15 …05 s 
Overall dimensions without leads 3,1x1,3 x1,2 mm 
Leads length 10…15 mm 

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Products - Products

REPEATERS FOR MOBILE COMMUNICATION SYSTEM RGSM-900

 It is intended for increasing of GSM mobile communication service zone in places with a low level. 

 

Repeater’s using allows provide a reliable phone communication in places with impossible communication for some reason.
To a category of such places are referred so-called, "shadow areas" - basements, hangars, shopping centers, vestibules, or premises with thick walls.
The repeater amplifies a signal and allows stabile phone communication reducing risk of its loss or interruption at the lowest signal level.

Advantages:

-decrease of a microwave irradiation of the subscriber at the cost of a power decreasing, demanded for reliable reception;
- increasing of accumulator work duration without recharging of a battery.

At base station direct visibility the repeater installation is simple and does not demand the special equipment.

Delivery complete set:

 

  • transceiver module.............. 1pc.; 
  • antenna as "wave duct".........1pc.;
  • connecting cables. 

 It is possible manufacturing of antennas with a spectral radiation (reception of three operators is provided) on the customer's request. 

 

SPECIFICATIONS      

Communication standard  GSM 900 
Power supply (220±10%) V 
Maximal output power 200 mW 
Gain factor 35 dB 
Noise factor no more than 5 dB
Irregularity of amplitude-frequency characteristic ± 1,5 dB
Power consumption not more than 10 W
Size 210x150x140 mm
Weight 600 g
Operation temperature range  +5...+50 °C 
Antennas connector type CР-50-159ФВ
Number of subscribers
      - at call waiting up to 75

Number of subscribers’ conversations in a service area of a repeater is 25. 

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Products - Products

GPRS MODEM-CONTROLLER GMC-1

 The GMC-1 is intended for acquisition and transmission of data, about of controllable object condition, through a cell-communication network to the server. 

The GMC-1 includes:

  •  the SIM900 system from GPRS module;
  • processor;
  • signals matching module;
  • external GSM-antenna.
        

 
 The modular construction of the device and presence of the programmed processor allow using it in various systems of remote supervision and management.

The clock of a real time and reserve Li-Ion the accumulator, providing operation of controller at switching-off of an external feeding are built in the controller.

The device supports following interfaces: RS-485, RS-232, I2C, SPI, ONEWire. 

 

Functional capabilities: 

  •  SMS sending and receiving; 
  • Data transmission and reception by GPRS;
  • Reception and transmission of voice calls;
  • Indication about of registration in the GSM network;
  • Presence of dialing fixing number;
  • Access implementation to SIM only through defined GSM network’s operator.  

SPECIFICATIONS

Number of digital input/output  40  
Number of analogue inputs (0...3V)  16  
Supply voltage from constant-current source  6...40 V  
Supply voltage from internal accumulator  3,7 V (1A per hour)  
Current consumption at call waiting  30 mA  
Current consumption at data transmission mode  300 mA  
Operation time at feeding off-line mode, no more than   
at call waiting mode  33h  
- at data transmission mode  3h  
Current peak value  A  
Digitization speed  500 ksps  
Mobile class  B  
GPRS standard  class 10  

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Products - Products

ALUMINUM  PROFILES - AP01 

We are offering aluminum profile of closed-loop type with transverse dimensions:

external  61,5x28mm  
internal  55x20mm  
 Profile length on the customer’s order. 

 

    Fig.1                                                                Fig.2

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Products - Products
UNIT OF REMOTE TONE CONTROL BY STARTER (RTCS) 
 
We are offering two modification of unit RTCS unit:
  • Unit of RTCS-01, intended for start and control of main aggregates (motors, etc) and test of voltage occurrence on single-phase and three-phase current mains with 380V by the given DTMF code;
  • unit of RTCS-02, intended for DTMF control command transmission to RTCS-01 unit and reception from its information about unit situation.
RTCS-01 and RTCS-02 units give the opportunity to build remote control systems with large number of various electric machines and carry out control of units’ situation on various areas.
Each of  RTCS-01 and RTCS-02 unit operates in a complex with radio station. The radio station can be any type with the opportunity to voice frequency transmission. 
  
Simultaneously in one network can be functioned up to 9999 units of  RTCS-01 unit, every of which has your unique four-figure number.
The RS232 input gives the opportunity to RTCS-01 and RTCS-02 units add various peripheral devices, including various  types  of data transmission modems
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