Fluidcontrol

Level switch

Nivotemp NT-EL, NT-ELD

DA100226

12/2021

page 1 / 6

Buhler Technologies LLC, 1030 West Hamlin Road, Rochester Hills, MI 48309

Phone: 248.652.1546, Fax: 248.652.1598

e-mail: sales@buhlertech.com

Internet: www.buhlertech.com

In hydraulics and lubrication technology the fill level of oil tanks

needs to be monitored continuously. Here, modern factory

automation requires compatible signals. Despite central system

control, visualising the current level on the actual tanks is often

desired. To minimise production costs and the space required

on containers, it makes sense to use one monitor for both e.g.

the fill level and oil temperature. The Nivotemp series meets

virtually all requirements arising in this area of application.

NT-EL

Tank connections G1/2, M20x1.5, 7/8-14UNF

M12 plug connection

Level and/or temperature control

Small, compact design

Proven, highly dynamic float system

NT-ELD

Tank connections G1/2, M20x1.5, 7/8-14UNF

Fixed fill level monitor switching outputs

LED display swivels 270°

Standardised VDMA-based menu structure

Two programmable temperature switching output

Alternatively, one continuous temperature output signal

plus one freely programmable switching output

Switching output configurable as window or hysteresis

Switching output configurable as frequency output (1-100 Hz)

Min./Max. value memory, logbook

Nivotemp NT-EL, NT-ELD

NT-EL Technical Data

Version MS Dimensions given in mm (inch)

Operating pressure: max. 14.5 PSI

min. 50 (2)

L = 280, 370, max. 500 mm (11, 14.6, max. 19.7 in) (in 10 mm / 0.4 in increments)

Seal

(X)

L2 = min. 60 (2.4)

SW27

M12x1

M20x1.5

G1/2

7/8-14 UNF

32 (1.4)

L1 = min. 30 (1.2)

Ø18 (0.7)

45 (1.8)

3.5 (0.1)

M20 x1.5

26 (1)

14 (0.6)

Eolastic

seal

G1/2

26.6 (1.05)

14 (0.6)

Eolastic

seal

7/8-14UNF

26 (1)

12.7 (0.5)

O-ring

Operating temperature: -4 °F to 176 °F

Float: SK 174

Min. fluid density: 0.029 lb/in³

Lengths (all versions): 280, 370, 500 mm (11, 14.6, 19.7 in)

(standard)

variable to max. 500 mm (19.7 in)

Weight at L = 500 mm (19.7 in): approx. 0.4 lb

Material

Float: PU

Immersion tube: Brass

G1/2 connection, M20 x 1,5,7/8-14UNF: Aluminium

Level switching output K40

Number max.: 2 not adjustable

Function: NO / NC*

Max. voltage: 30 V DC

Max. switching current: 0.5 A

Max. contact load: 5 VA

Min. contact spacing: 30 mm (1.2 in)

(in 10 mm / 0.4 in increments)

*NO= falling NC contact / NC = falling NO contact

Optional temperature

Temperature contact: TEL xx

Max. voltage: 30 V DC

Max. switching current: 1 A

Max. contact load: 10 VA

Function: NC

Switching point °F: 122 / 140 / 158 / 176

Switching point tolerance: ± 9 °Ra

Max. hysteresis: 20 ± 9 °Ra

Other temperatures and switching function available upon request

Temperature sensor

Pt100 DIN EN 60 751 (Tolerance ±1.4 °F)

NT-EL default pin assignment

IP rating IP67*

Level contact(s) only

Only level contact K40

and temperature con-

tact (TK)

Level contact K40 and

temperature sensor (PT)

Level contacts K40 and

temperature contact

(TK) with special

connection)

* with IP67 cable box attached

2 Buhler Technologies LLC We reserve the right to amend specification. DA100226 ◦ 12/2021

Nivotemp NT-EL, NT-ELD

Ordering instructions NT-EL

Model key

NT-EL

G1/2

M20

UNF

Brass

Version

Model designation

Connection

Plug

Temperature signal

Pt100

Temperature contact NC contact

TE50NC

TE60NC

TE70NC

TE80NC

= temperature sensor

= 50 °C (122 °F)

= 60 °C (140 °F)

= 70 °C (168 °F)

= 80 °C (176 °F)

M12

Length

280

370

500

variable (please specify)

= G1/2

= M20x1.5

= 7/8-14 UNF

Number of level contacts

1K or 2K (NC / NO)

max. 1 level contact

Ordering example

You require: Level switch with connector M20x1.5, length L= 370 mm (14.6 in),

2 level contacts, L1 = 280 mm (11 in) NC / L2 = 320 mm (12.6 in) NO

Order NT-EL-MS-M20-M12/370-2K-280NC/320NO

3Buhler Technologies LLCWe reserve the right to amend specification.DA100226 ◦ 12/2021

Nivotemp NT-EL, NT-ELD

Technical Data NT-ELD

Version MS Dimensions given in mm (inch)

Operating pressure: max. 14.5 PSI

min. 50 (2)

Seal

(X)

L2 = min. 60 (2.4)

SW27

M12x1

M20x1.5

G1/2

7/8-14 UNF

)

L1 = min. 30 (1.2)

Ø18

(0.7)

45 (1.8)

3.5 (0.1)

10°

LEDs

84 (3.3)

14 (0.6)

20.5 (0.8)

40 (1.6)

0.5 (0.01)

24 (0.9)

53 (2.1)

Housing swivels

by min. 270°

L = 280, 370, 500 mm (11, 14.6, 19.7 in) (in 10 mm / 0.4 in increments)

M20 x1.5

26 (1)

14 (0.6)

Eolastic

seal

G1/2

26.9 (1.1)

14 (0.6)

Eolastic-

seal

7/8-14UNF

26 (1)

12.7 (0.5)

O-ring

Operating temperature: -4 °F to 176 °F

Float: SK 174

Min. fluid density: 0.029 lb/in³

Lengths (all versions): 280, 370, 500 mm (11, 14.6, 19.7 in)

(standard)

variable to max. 500 mm (19.7 in)

Weight at L = 500 mm (19.7 in): approx. 0.7 lb

Material

Float: PU

Immersion tube: Brass

G1/2 connection, M20 x 1,5,7/8-14UNF: Anodised aluminium

Level switching output K40

Number max.: 2 not adjustable

Function: NO / NC*

Max. voltage: 30 V DC

Max. switching current: 0.5 A

Max. contact load: 5 VA

Min. contact spacing: 30 mm (1.2 in)

(in 10 mm / 0.4 in increments)

*NO= falling NC contact / NC = falling NO contact

Temperature display electronics

Display: 4 character 7 segment LED

Operation: Via 3 keys

Memory: Min. / Max. Data memory

Starting current input: approx. 100 mA for 100 ms

Current input during operation: approx. 50 mA (without

current- and switching outputs)

Supply voltage (U

): 10–30 V DC (nominal voltage

24 V DC)

Ambient temperature: -4 °F to 158 °F

Temperature display units: °C / °F

Display range: -4 °F to 248 °F

Alarm setting range: 32 °F to 212 °F

Display accuracy: ± 1 % FS

Measuring principle: Pt 100 Class B, DIN EN 60751

4 Buhler Technologies LLC We reserve the right to amend specification. DA100226 ◦ 12/2021

Nivotemp NT-EL, NT-ELD

NT-ELD temperature outputs

Choose from the following switching outputs:

Version 2T 1T-KT

Plug (base): 2 x M12 – 4-pin 2 x M12 – 4-pin

Switching outputs:

2 x freely programmable 1 x freely programmable

Alarm memory: 1 switching output assignable to alarm

logbook

1 switching output assignable to alarm

logbook

max. switching current* 0.5 A per output

continuous short-circuit protected

0.5 A per output

continuous short-circuit protected

Contact load: max. 1 A total max. 1 A total

1 switching output configurable as

frequency output:

0 – 100 Hz

Analogue output: 1 x 4 – 20 mA, 2-10 V DC,

0-10 V DC or 0-5 V DC

Max. burden Ω as current output: = (U

-8 V) / 0.02 A

Min. input load min. as voltage output: 10 kΩ

**Output 1 max. 0.2 A.

Ordering instructions NT-ELD

NT-ELD

G1/2

M20

UNF

Brass

Version

Type designation

Connection

Plug

LED temperature display

2 x M12

Length

280 (11 in)

370 (14.6 in)

500 (19.7 in)

variable (please specify)

Number of level contacts

1K or 2K (NC / NO)

XX XX

XX XX XX XX XX XX

Installation dimensions L1 = ...mm

1st level contact

Switching function 1st Contact

NO / NC

Installation dimensions L2 = ...mm

2nd level contact

Switching function 2nd contact

NO / NC

2 x temperature output

1T-KT

1 x temperature output

1 x analogue output

= G1/2

= M20x1.5

= 7/8-14 UNF

Ordering example

You require: Level switch with G1/2 connection, brass, length L= 500 mm (19.7 in), 2 level contacts,

1st contact 100 mm (3.9 in) NC, 2nd contact 450 mm (17.7 in) NO,

temperature analysis with display and 2 programmable outputs.

Order: NT-ELD-MS-G1/2-2M12/500-2K-100NC-450NO-2T

5Buhler Technologies LLCWe reserve the right to amend specification.DA100226 ◦ 12/2021

Nivotemp NT-EL, NT-ELD

NT-ELD standard pin assignment

Plug A level

M12 (base)

Plug B temperature

M12 (base)

Connection schematic:

Number of poles:

4-pin 4-pin

DIN EN:

61076-2-101 61076-2-101

Max. voltage:

30 VDC 30 VDC

IP rating:

IP65 IP65

2T PIN

2 x temperature output

+24 V

S2 (PNP)

GND

S1 (PNP)

1T-KT PIN

1 x Temperature output

1 x Analog output

+24 V

Analogue

GND

S1 (PNP)

6 Buhler Technologies LLC We reserve the right to amend specification. DA100226 ◦ 12/2021