Sensus FM-1D/K User Manual

Operating Instructions
Frequency Converter FM-1D/K
Digital-analogue-converter
and flow rate indicator for water meters
Contents
1. Description
2. Mounting
3. Connection
4. Calibration by hand
5. Protection
6. Test mode
7. Operation
8. Lightning protection
9. Trouble shooting
10. Replacing fuses
1. Description
FM-1D/K is a µP-controlled frequency
converter with display.
It converts pulses into proportional cur-
rent for flowrate display.
Input from the pulsers are converted to:
• Standardized current
• Pulse totalization
• LED display
2. Mounting
Snap action on
35mm top hat
rail acc. to EN
50022
remove from
top hat rail
Wall mounting
with two screws
M5M4
5060
85
+ Sensor -
U+
N PE 24 VAC/DC
12345678
+
-
+
-
FM-1D/K
select

Sensus FM-1D/K Specifications

General

Type	Media Converter
Model	FM-1D/K
Fiber Ports	1
Copper Ports	1
Fiber Connector	SC
Wavelength	1310 nm
Maximum Distance	20 km
Power Supply	5VDC
Interface	RJ45
Operating Temperature	0°C to 50°C

Summary

Connection

Electrical Connection Notes

Calibration by Hand

Calibration Procedure

Step-by-step guide to calibrate the FM-1D/K using SELECT, +, and - buttons to set parameters.

Protection

Device Protection Mode

Test Mode

Activating Test Mode

Describes how to enter test mode to check analog and digital outputs without a pulser connected.

Lightning Protection

Lightning Protection Installation

Trouble Shooting

Troubleshooting Common Issues

Lists common error symptoms, their causes, and remedies for the FM-1D/K device.

Replacing Fuses

Fuse Replacement Procedure

Step-by-step instructions for safely replacing fuses in the FM-1D/K, including fuse types and sizes.