Block Instruments

Product Code
Description
Approved By

BPAC

Block Proving by Digital Axle Counter BPAC using UFSBI as per RDSO Spec. No. IRS-S-105/2012 version- or latest for Single Line or Double Line operation with Relays or without relays.

RDSO

   

DLBI

Double Line Block Instrument IRS Type as per RDSO Specn. No. IRS:S-22/91.

RDSO

   

TLBI

Tokenless block instrument diado type single line handle type with inbuilt transmitter & receiver complete with 12 Nos. Q series relay as per RDSO Specification No. IRS:S:98/2001 amendment No.3 or latest.

RDSO

   

TX-RX

Transmitter & Receiver of 2700/1800 cycles carrier frequency and modulated frequency 65/85 cycles for tokenless single line block instrument handle type as per RDSO Spec. No. IRS:S:98/2001 Amend No.1.

RDSO

   

BBE

Block Bell Equipment as per Specn. No. IRS-TC-44/88 with Amendment No.1 Latest.

RDSO

   

DTMF based Block
Bell Equipment

DTMF Based Electronic Block Bell & Block Telephone Tentative Spec. No. RDSO/SPN/191/2005.

RDSO

   
Filter Unit
Filter Unit as per RDSO Specification No.IRS-S-68/89 or latest.
RDSO