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LAB-Supply 2022
Jun-Air und LANCIER Monitoring sind dabei, bei der LAB-Supply:
19.10.2022 LAB-SUPPLY Sindelfingen, 09.11.2022 LAB-SUPPLY Münster


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RM-Fiber 4S

Optical Fiber Attenuation Module for monitoring optical attenuation switches

The RM-Fiber 4S module is a stand-alone measurement and monitoring device for up to 4 optical attenuation switches in series on a single optical fiber (eg. LANCIER Monitoring cover sensors for manhole cover monitoring).

The RM-Fiber 4S module uses a spare optical fiber as a measurement loop which is being measured continuously. The monitoring of a fiber bet­ween two stations is provided by the use of two RM-Fiber 4S modules. One is acting as a transmitter while the other acts as a receiver. The optical attenuation switches do not require a power supply.

The thresholds for the attenuation values can be programmed with no restriction using an integrated keypad and the basic module’s display. All settings are saved in an internal EEPROM memory to prevent losses.

For the remote alarm system the RM-Fiber 4S module possesses built-in dry output contacts. Additionally it can be connected to the ­LANCIER Tx-Bus, a Can-Bus or a telecontrol system via  Modbus.

The LANCIER Monitoring Rail-Module-Bus is a modular and robust sensor system.

Several measuring modules are mounted on a DIN rail and are directly connected to one another by means of plug-in contacts. The supply voltage, data analysis and control panel as well as their transmission to the remote measuring stations are carried out via the RM-Basic module.

Ordering Data

RM-Fiber 4S
Measuring module for optical fiber attenuation
with display and keys. Signal output via dry contacts.

Faseranschluss ST = 2
Fiber Connector SC/PC = 3
Fiber Connector DIN/PC = 4
Fiber Connector SC/APC = 5
Fiber Connector FC/APC = 6
Fiber Connector LC = 7
Fiber Connector E2000 = 8
Fiber Connector FC/PC = 9
Other connectors upon request


Order-No. 074705.09A

Power supply, communication and display module for the RM-Bus

Order-No. 074001.100
19" DIN rail for RM-Series,  3 HU
Order-No. 075416.000

Technical Data

Measurement range-9.9 .. 50 dB
Resolution0.1 dB
Measuring wavelength1625 nm
Response time< 1 sec.
Supply voltageby RM-Bus
Displayby RM basic module
Signal LEDs5 x green/red: alarm/acknowledged alarm
1 x blue: LC display of RM basic module is active for this sensor
Signal outputs4 dry change-over contacts for switch alarm
1 dry change-over contact for attenuation alarm
Max. switchable voltage / current100 V DC / 0,1 A DC
Operating temperature-20 °C .. +50 °C
Admissible ambient humidity0 .. 95 % rel. humidity, non-condensing
Dimensions RM-Fiber (W x H X D)108 x 62.2 x 89.7 mm

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