Endress+Hauser Nivotester FTL325N-**** Series Technical specifications

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Brief Operating Instructions
Nivotester FTL325N, 3-channel
Vibronic
Level detector with NAMUR input for connecting
any NAMUR sensor
These Instructions are Brief Operating Instructions; they are
not a substitute for the Operating Instructions pertaining to
the device.
Detailed information about the device can be found in the
Operating Instructions and the other documentation:
Available for all device versions via:
• Internet: www.endress.com/deviceviewer
• Smart phone/tablet: Endress+Hauser Operations App
KA01434F/00/EN/02.20
71481694
2020-09-29

Nivotester FTL325N, 3-channel
2 Endress+Hauser
Order code:
Ext. ord. cd.:
Ser. no.:
www.endress.com/deviceviewer Endress+Hauser
Operations App
XXXXXXXXXXXX
XXXXX-XXXXXX
XXX.XXXX.XX
Serial number
1.
3.
2.
A0023555

Nivotester FTL325N, 3-channel Table of contents
Endress+Hauser 3
Table of contents
1 About this document .............................................................. 3
1.1 Symbols ............................................................................. 3
2 Basic safety instructions .......................................................... 5
2.1 Requirements for the personnel ............................................................ 5
2.2 Designated use ........................................................................ 5
2.3 Workplace safety ...................................................................... 5
2.4 Operational safety ......................................................................5
2.5 Product safety ......................................................................... 6
3 Incoming acceptance and product identification ................................... 6
3.1 Incoming acceptance .................................................................... 6
3.2 Product identification ................................................................... 6
3.3 Storage, transport ...................................................................... 7
4 Installation ....................................................................... 8
4.1 Mounting conditions .................................................................... 8
4.2 Mounting the measuring device ............................................................9
4.3 Post-installation check ................................................................. 11
5 Electrical connection ............................................................ 12
5.1 Connection conditions .................................................................. 12
5.2 Connecting the measuring device ......................................................... 12
5.3 Special connection instructions ........................................................... 15
5.4 Ensuring the degree of protection ......................................................... 16
5.5 Post-connection check ..................................................................16
6 Operation options ............................................................... 16
6.1 Operation concept ..................................................................... 16
6.2 Opening the front panel ................................................................ 17
6.3 Display elements ...................................................................... 17
6.4 Operating elements ....................................................................18
7 Commissioning .................................................................. 18
7.1 Function check ....................................................................... 18
7.2 Setting the functions ................................................................... 19
1 About this document
1.1 Symbols
1.1.1 Safety symbols
DANGER
This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in
serious or fatal injury.
WARNING
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
serious or fatal injury.

About this document Nivotester FTL325N, 3-channel
4 Endress+Hauser
CAUTION
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
minor or medium injury.
NOTICE
This symbol contains information on procedures and other facts which do not result in
personal injury.
1.1.2 Electrical symbols
Ground connection
Grounded clamp, which is grounded via a grounding system.
Protective earth (PE)
Ground terminals, which must be grounded prior to establishing any other connections. The
ground terminals are located on the inside and outside of the device.
Output
Input
Fault
No fault
Limit signal
Light emitting diodes (LED)
LED not lit
LED lit
LED flashing
1.1.3 Symbols for certain types of information and graphics
Tip
Indicates additional information
Reference to documentation
A
Reference to another section
1.
,
2.
,
3.
Series of steps
A, B, C ... View
-
Hazardous area
.
Safe area (non-hazardous area)

Nivotester FTL325N, 3-channel Basic safety instructions
Endress+Hauser 5
2 Basic safety instructions
2.1 Requirements for the personnel
The personnel must fulfill the following requirements to carry out their tasks, e. g.
commissioning and maintenance:
‣Trained specialists must have a qualification that is relevant to the specific function and
task.
‣Must be authorized by the plant owner/operator.
‣Must be familiar with national regulations.
‣Must have read and understood the instructions in the manual and supplementary
documentation.
‣Personnel must follow instructions and comply with general policies.
2.2 Designated use
• The Nivotester FTL325N with intrinsically safe NAMUR inputs (IEC/EN 60947-5-6) must
be connected only to appropriate sensors.
• The device may be dangerous if used incorrectly.
• Use only tools that have been insulated against ground
• Use only original parts
2.2.1 Incorrect use
The manufacturer is not liable for damage caused by improper or non-designated use.
Deviating application conditions may affect the level of protection. The correct functioning of
the device cannot be guaranteed.
2.3 Workplace safety
For work on and with the device:
‣Wear the required protective equipment according to federal/national regulations.
2.4 Operational safety
Risk of injury!
‣Operate the device only if it is in proper technical condition, free from errors and faults.
‣The operator is responsible for ensuring failure-free operation of the device.
Modifications to the device
Unauthorized modifications to the device are not permitted and can lead to unforeseeable
dangers.
‣If, despite this, modifications are required, consult with Endress+Hauser.
Repair
To ensure continued operational safety and reliability:
‣Only perform repair work on the device if this is expressly permitted.
‣Observe federal/national regulations pertaining to the repair of an electrical device.
‣Use original spare parts and accessories from Endress+Hauser only.

Incoming acceptance and product identification Nivotester FTL325N, 3-channel
6 Endress+Hauser
2.5 Product safety
This device has been constructed and tested to state-of-the-art operational safety standards
and in accordance with good engineering practice. The device left the factory in a safe
operating condition.
2.5.1 CE mark
The device meets the legal requirements of the applicable EU Directives. These are listed in
the corresponding EU Declaration of Conformity along with the standards applied.
Endress+Hauser confirms successful testing of the device by affixing to it the CE mark.
2.5.2 EAC conformity
The device meets the legal requirements of the applicable EAC Directives. These are listed in
the corresponding EAC Declaration of Conformity along with the standards applied.
Endress+Hauser confirms successful testing of the device by affixing to it the EAC mark.
3 Incoming acceptance and product identification
3.1 Incoming acceptance
Check the following during goods acceptance:
 Are the order codes on the delivery note and the product sticker identical?
 Are the goods undamaged?
 Do the nameplate data match the ordering information on the delivery note?
 If necessary (see nameplate), are the Safety Instructions, e. g. XA, provided?
If one of these conditions is not satisfied, contact your Sales Center.
3.2 Product identification
Nameplate data on the device
‣Enter the serial number from the nameplates in the W@M Device Viewer
(www.endress.com/deviceviewer)
 All the information about the measuring device and all associated Technical
Documentation are displayed.
‣Enter the serial number from the nameplate in the Endress+Hauser Operations app.
 All the information about the measuring device and all associated Technical
Documentation are displayed.

Nivotester FTL325N, 3-channel Incoming acceptance and product identification
Endress+Hauser 7
3.2.1 Nameplate
Ser. no.:
Kom. no.:
TAG no.:
1
2
3
4
5
6
7
8
9
10
A0039180
 1 Nameplate
1 Manufacturer's logo, product name
2 Supply voltage
3 Electrical connection
4 Temperature specifications and reference to additional safety-related documentation (only for
certified device versions)
5 Reference to certifications
6 Identification in accordance with Directive 94/9/EC and identification of type of explosion protection
(only for certified device versions)
7 Serial number
8 Kom. number
9 TAG number
10 Manufacturer's address
3.2.2 Manufacturer address
Endress+Hauser SE+Co. KG
Hauptstraße 1
79689 Maulburg, Germany
Address of the manufacturing plant: See nameplate.
3.3 Storage, transport
• Pack the device so that it is protected against impact
The original packaging offers the best protection
• Permitted storage temperature: –20 to +85 °C (–4 to +185 °F)

Installation Nivotester FTL325N, 3-channel
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3.3.1 Transporting the product to the measuring point
Transport the measuring device to the measuring point in the original packaging.
4 Installation
4.1 Mounting conditions
• If using outside the hazardous area, mount the device in a cabinet.
• Mount the device so that it is protected against weather and impact.
If operating outdoors and in warmer climates, avoid direct sunlight.
Protective housing (IP65) is available for up to four single-channel Nivotester devices or two
3-channel Nivotester devices.

Nivotester FTL325N, 3-channel Installation
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4.2 Mounting the measuring device
4.2.1 Horizontal orientation
A
50 (2)
£
7.5 (0.3)
15 (0.59)
50 (2)
£
50 (2)
£
B
-
-
.
A0026303
 2 Minimum spacing, horizontal orientation. Unit of measurement mm (in)
A Connection of another device type
B DIN rail in accordance with EN 60715 TH35-7.5/15
A horizontal installation ensures better dissipation of heat than a vertical orientation.

Installation Nivotester FTL325N, 3-channel
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4.2.2 Vertical orientation
A
50 (2)
£
50 (2)
£
50 (2)
£
-
-
.
A0026420
 3 Minimum spacing, vertical orientation. Unit of measurement mm (in)
A Connection of another device type

Nivotester FTL325N, 3-channel Installation
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4.2.3 Mounting the device
1.
2.
A0039139
 4 Mounting; DIN rail as per EN 60715 TH35-7.5/EN 60715 TH35-15
4.2.4 Removing the device
FTL325
0 V
L1
L+
N
L–
U"
1.
2.
AB
A0039140
 5 Removing
A Remove from DIN rail.
B For quick replacement of devices without a cable, remove the terminal strips.
4.3 Post-installation check
 Is the measuring device undamaged (visual inspection)?

Electrical connection Nivotester FTL325N, 3-channel
12 Endress+Hauser
 Does the measuring device conform to the measuring point specifications?
For example:
• Supply voltage
• Ambient temperature range
 Are the measuring point number and labeling correct (visual inspection)?
Is the measuring device adequately protected against precipitation and direct sunlight?
5 Electrical connection
5.1 Connection conditions
LWARNING
Risk of explosion due to faulty connection.
‣Observe applicable national standards.
‣Comply with the specifications in the Safety Instructions (XA).
‣Check to ensure that the power supply matches the information on the nameplate.
‣Switch off the supply voltage before connecting.
‣When connecting to the public mains, install a mains switch for the device such that it is
within easy reach of the device. Mark the power switch as a disconnector for the device
(IEC/EN61010).
5.2 Connecting the measuring device
The removable terminal blocks are color-coded into intrinsically safe and non-
intrinsically safe terminals. This difference helps to ensure safe wiring.
5.2.1 Arrangement of terminals
Observe the specifications on the nameplate of the device.

Nivotester FTL325N, 3-channel Electrical connection
Endress+Hauser 13
L1
L+
L1
N
L–
N
2 16
1 15
B
A
C
D
A0039151
 6 Arrangement of terminals
A U 85 to 253 VAC, 50/60 Hz
B U 20 to 30 VAC, 50/60 Hz
C U 20 to 60 VDC
D Max. 1.5 mm² (max. AWG 16)

Electrical connection Nivotester FTL325N, 3-channel
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5.2.2 Connecting the sensor
33 34
CH1 CH2 CH3
7 8 37 38
---
+++
33 34
CH1 CH2 CH3
7 8
--
++
33 34
CH1 CH2 CH3
-+
A0039564
 7 Connecting to any NAMUR sensor for 1 to 3 limit signals
H Error current signal H (High) > 2.1 to 5.5 mA (FEL56)
L Error current signal (Low)= 0.4 to 1.2 mA (FEL48, FEL58, FEL68, FEM58, FEI58)
For applications requiring functional safety in accordance with IEC 61508 (SIL), see the
Functional Safety Manual. For WHG applications, see the associated WHG documents.
Blue terminal blocks at top for hazardous area
• Twin-core connecting cable between the Nivotester and sensor, e. g. commercially available
instrument cable or cores in a multi-core cable for measurement purposes
• Use a shielded cable in the event of increased electromagnetic interference, e. g. from
machines or radio equipment. Only connect the shield to the grounding terminal in the
sensor. Do not connect it to the Nivotester.
5.2.3 Connecting the signal and control systems
Gray terminal blocks at bottom for the non-hazardous area
Relay function depending on the level and safety mode
If a device with high inductance is connected (e. g. contactor, solenoid valve), a spark arrestor
must be installed to protect the relay contact .
5.2.4 Connecting the supply voltage
Green terminal block at bottom
A fuse is integrated into the power supply circuit. An additional fine-wire fuse is not
necessary. The Nivotester is equipped with reverse polarity protection.

Nivotester FTL325N, 3-channel Electrical connection
Endress+Hauser 15
5.3 Special connection instructions
5.3.1 Connecting the sensors for two-point control Δs
Connecting the sensors for two-point control Δs
33 34
CH1 CH2CH2 CH3CH3
7 8 37 3837 3833 34
DsDs
--- --
+++ ++
CH1 Max
CH2
CH2
CH3
CH3 DsDs
A0039179
 8 Connecting the sensors for two-point control Δs, any NAMUR sensor
H Error current signal H (High) = 2.1 to 5.5 mA (FEL56)
L Error current signal L (Low) = 0.4 to 1.2 mA (FEL48, FEL58, FEL68, FEM58, FEI58)
For applications requiring functional safety in accordance with IEC 61508 (SIL), see the
Functional Safety Manual. For WHG applications, see the associated WHG documents.

Operation options Nivotester FTL325N, 3-channel
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5.3.2 Connecting the outputs
CH1
15 164 5 6 22 23 24 26 27 28
Ds
CH3CH2
AB
A0039182
 9 Connecting the outputs
A Level, limit signal
B Fault, alarm
5.4 Ensuring the degree of protection
• IP20 (as per IEC/EN 60529)
• IK06 (as per IEC/EN 62262)
5.5 Post-connection check
 Is the device or cable undamaged (visual inspection)?
 Do the mounted cables have adequate strain relief?
 Does the supply voltage match the specifications on the nameplate?
 No reverse polarity, is terminal assignment correct?
 Do the cables used comply with the requirements?
If necessary, has a protective ground connection been established?
If supply voltage is present, is the device operational and does a screen appear?
6 Operation options
6.1 Operation concept
Onsite configuration with DIL switches behind fold-down front panel.

Nivotester FTL325N, 3-channel Operation options
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6.2 Opening the front panel
1 2
ON
A0039573
 10 Opening the front panel
6.3 Display elements
CH1
CH2
CH3
CH1 CH2
CH3
CH2
CH3
ye
rd
ye
rd
CH1
rd
gn
ye
A0039237
 11 Nivotester, light emitting diodes (LEDs)
gn Green LED; ready for operation
rd One red LED per channel: fault signal
ye One yellow LED per channel: level relay picked up

Commissioning Nivotester FTL325N, 3-channel
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6.4 Operating elements
1 2
ON
1
CH1
4
1
2
3
CH2
CH3
1
CH2
3
< 1.2 mA
>2.1 mA
3 4
ON
CH1
> 2.1 mA
<1.2 mA
1 2
ON
2
CH3
3
1 2
ON
< 1.2 mA
>2.1 mA
A0039574
 12 Operating elements
1 Test button, can also be operated when the front panel is closed
2 Setting for transmitter error current signal H or L (input channel 1) and fault signaling ON/OFF
3 Setting for transmitter error current signal H or L (input channels 2 and 3) and fault signaling
ON/OFF
4 MODE switch: Δs, e. g. Pump control (1), two level relays (2), single channels (3)
7 Commissioning
7.1 Function check
 Perform installation check.
 Perform function check.

Nivotester FTL325N, 3-channel Commissioning
Endress+Hauser 19
7.2 Setting the functions
1 2
ON
1
2
3
CH1
> 2.1 mA
<1.2 mA
1 2
ON
Δ Δs CH2+CH3, !CH1 / s CH2+CH3
!CH2 / !CH1 + CH2
!CH1+CH2+CH3
CH2
> 1.2 mA
<2.1 mA
3 4
ON
CH3
1 2
ON
> 1.2 mA
<2.1 mA
A0039575
 13 Switches for setting the functions
Input signal
• Error current signal H/L
• Fault message
CH1, CH2, CH3
• Error current signal H (High) = 2.1 to 5.5 mA (FEL56)
• Error current signal L (Low) = 0.4 to 1.2 mA (FEL48, FEL58, FEL68, FEM58, FEI58)
Switch for MODE settings
• (1) Δs, e. g. Pump control
• (2) Two level relays
• (3) Single channels
For applications requiring functional safety in accordance with IEC 61508 (SIL), see the
Functional Safety Manual. For WHG applications, see the associated WHG documents.

Commissioning Nivotester FTL325N, 3-channel
20 Endress+Hauser
7.2.1 Pay attention to the switch position
1 2
ON
AB
1 2
ON
CH1
A
B
1 2
ON
CH2
1 2
ON
CH3
A0039582
 14 Switch positions
A Error current signal H (High) = 2.1 to 5.5 mA (FEL56)
B Error current signal L (Low) = 0.4 to 1.2 mA (FEL48, FEL58, FEL68, FEM58, FEI58)
Switch position on electronic insert
AB
A0039743
 15 Switch position on Liquiphant electronic insert (FEL56, FEL58, FEL48, FEL68, FEM58, FEI58)
A MAX
B MIN
The switch position depends on the electronic insert.