Deghat Gostar Eng. Co.

Keller Series 26 W
Piezoresistive Pressure Transmitters
For Level- and High Precision Pressure Measurements
Pressure Ranges 0,2...20 bar (relative)
Output 0...10 V | 0...20 mA | 4...20 mA
Linearity typ. 0,2 %FS
Stability, Range 500 mbar: typ. 1 mbar
Stability, Range > 1 bar: typ. 0,1 %FS

Keller Series 26 Y
Piezoresistive Low-Cost Level Transmitter
Absolute and Relative Pressure
Pressure Ranges 0,2...10 bar
Output 4…20 mA | 0…10 V | 0…5 V | 0,5…4,5 V
Accuracy ±0,25 %FS
Stability, Range > 2 bar: typ. 0,1 %FS
Stability, Range = 2 bar: typ. 2 mbar

Keller Series 27 W
Piezoresistive Pressure Transmitters
For Level- and High Precision Pressure Measurements
Pressure Ranges 0,2...20 bar (relative)
Output 0...10 V | 0...20 mA | 4...20 mA
Linearity typ. 0,2 %FS
Stability, Range 500 mbar: typ. 1 mbar
Stability, Range > 1 bar: typ. 0,1 %FS

Keller Series 36 X W
Highly Precise Level Transmitters
Digitally Compensated / Rangeable / Digital and Analog Output
Pressure Ranges 1...30 bar (abs./rel.)
Output RS485 | 4...20 mA | 0...10 V
Accuracy 0,1 %FS
Linearity (best straight line) 0,025 %FS
Long Term Stability, Range = 1 bar: 1 mbar
Long Term Stability, Range > 1 bar: 0,1 %FS

Keller Series 36 X S (Stretto-Line)
Programmable Level Pressure Transmitter
Dia 16 mm / Digitally compensated / Rangeable
Pressure Ranges 0...10 bar (abs./rel.)
Output 4...20 mA | RS485
Error Band: 0,2 %FS (within comp. temperature range)
Comp. Temperature Range: 0…50 °C

Keller DCX-16 (VG, SG)
Autonomous Data Collector
Dia16 mm / Stretto-Linie
Pressure Ranges: 0,8...11 bar
Error Band: typ. ± 0,05 %FS / max. ± 0,1 %FS
Resolution: max. 0,0025 %FS
Long Term Stability typ.: 0,5 mbar

Keller DCX-18 ECO
Autonomous Data Collector
Dia 18 mm / Data Logging at Favorable Price
Pressure Ranges 0,8...11 bar
Error Band max. 0,2 %FS
Resolution max. 0,0025 %FS
Long Term Stability Range = 2 bar: 2 mbar (0,02 mWC)
Range > 2 bar: 0,2 %FS

Keller DCX-22 (VG, SG)
Autonomous Data Collector
100% Waterproof
Pressure Ranges 0,8...11 bar
Error Band typ. ± 0,05 %FS / max. ± 0,1 %FS
Resolution max. 0,0025 %FS
Long Term Stability typ. 0,5 mbar

Keller DCX-22 AA
Data Collector for Water Levels
100% waterproof, air pressure compensated
Pressure Ranges
800…1800 mbar abs. for ranges up to 5 mWS
800…2300 mbar abs. for ranges up to 10 mWS
Error Band: typ. ± 0,05 %FS / max. ± 0,1 %FS
Resolution max. 0,0025 %FS
Long Term Stability typ.: 0,5 mbar

Keller DCX-38 VG
Autonomous Capacitive Data Collector
For high resolution water level measurements
Pressure Ranges 0…50 mbar | 0…100 mbar | 0…300 mbar
Error Band max. 0,2 %FS
Resolution max. 0,002 %FS
Stability FS = 100 mbar: ± 0,1 %FS
FS = 100 mbar: ± 0,1 mbar

Keller GSM-2 (Ex version)
Remote Data Transmission Unit
and Data Logger
Battery powered, suitable for 2" tubes
Connection For Series 30 level transmitters or
Series DCX data loggers with digital interface RS485
Supply Lithium-Battery DD 3,9 V / 32 Ah
Housing Dimensions: 48 x 330 mm (diameter x length)
Accuracy / Resolution: typ. + 0,5 mbar (-20...40 °C) / typ. 0,2 mbar

Nivelco NIVOPRESS D
Hydrostatic level / pressure Transmitter

FEATURES
Two-wire compact transmitter
Stainless steel diaphragm
Measuring range: 0.1-400 bar, -1 bar
Scalable analogue output
Programmable damping
Level and pressure management
Secondary lightning protection
High overload capability
High accuracy <0.25%
Wide temperature ranges
HART communication
Explosion-proof models

APPLICATIONS
Most liquids and masses in tanks and vessels
Chemicals with dense vapour or gas layers above the surface
Foaming liquids
Viscous or corrosive materials

SPECIFICATIONS
Power supply: 10-36V DC
Ambient temperature: -25 °C to +70 °C
Medium temperature: -25 °C to +125 °C
Pressure: 0.1-400 bar, -1 bar
Outputs: 4-20 mA, HART
Process connection: 1/2'', 1'', 11/2'' process connection or hygienic fitting
Protection: IP 65
Approvals: ATEX II 1 G EEx ia IIC T6...T4

Nivelco NIVOPRESS N
Hydrostatic borehole Level Transmitters

FEATURES
Two- or three-wire submersible transmitter
Stainless steel body
Venting tube in cable
Up to 200 m range
Reverse polarity protection
Optional lightning protection
Linearity: +/-0.25%
HART communication
Built-in temperature sensor and transmitter

APPLICATIONS
Borehole transmitter for the water industry
Also for small diameter pipes
Clean or contaminated water, sewage
Weak acids, caustics

SPECIFICATIONS
Power supply: 12-30V DC
Process Temperature: -10 °C to +60 °C
Output: 4-20 mA / HART or 0... 10 V
Protection: IP68
ATEX II 1 G EEx ia IIC T6

Nivelco EchoTREK for liquids
Ultrasonic Compact Level Transmitters

2- or 4-wire compact transmitters
Non-contact level metering
Narrow 5° beam angle
Fully temperature compensated
Excellent signal processing via QUEST+ software
PP, PVDF, PTFE, stainless steel or foam faced transducers
Optional field indicator and plug-in programmer/display
Optional switching relay
Built-in DataLogger
Plastic or aluminium housing
[ HART ]
[ PROFIBUS PA ]
Secondary lightning protection
Explosion-proof models

APPLICATIONS
Almost any liquids
Level, volume and open channel flow measurement
Reliable measurement in challenging applications such as vapour/fume, stirrer, foam with liquids

SPECIFICATIONS
Power supply:
2-wire: 12.5-36V DC
4-wire: 24 V AC/DC; 230 V AC 11.4-40V DC / 11.4-28V AC
Ambient temperature: -30 °C to +70 °C
Medium temperature: -30 °C to +100 °C
Pressure: 0.3 - 3 bar
Measuring range:
0.2 to 25 m for liquids
Outputs: 4-20 mA, relay, HART, PROFIBUS PA
Protection: IP 67
Approvals: ATEX II 1 G EEx ia IIB T6

Nivelco EchoTREK for Solids
Ultrasonic Compact Level Transmitters

EATURES
3/4-wire compact transmitter
Non-contact level metering
Narrow 5° beam angle
Fully temperature compensated
Excellent signal processing via QUEST+ software
PP, PVDF, PTFE, stainless steel or foam faced transducers
Optional field indicator and plug-in programmer/display
Plastic or aluminium housing
[ HART ]
Secondary lightning protection
HART, RS 485
Power relay output
Dust Ex version

APPLICATIONS
Almost any free flowing solids
Level, volume or weight calculation and display
Reliable measurement in challenging applications such as dusting during filling

SPECIFICATIONS
Power supply:
85-255 V AC / 120-255 V DC / 11,4-40 V DC / 11,4-28V AC
Ambient temperature: -30 °C to +70 °C
Medium temperature: -30 °C to +100 °C
Pressure: 0.7 - 1.1 bar
Measuring range: 0.6 to 60 m for solids
Outputs: 4-20 mA, relay, RS485, HART
Protection: IP 67,
ATEX II 1/2 D IP 65 T130°C

Nivelco EasyTREK for Liquids
Ultrasonic Integrated Level Transmitter

FEATURES
2- or 4-wire compact transmitter
Low cost
Non-contact level measuring
Narrow 5° beam angle
Temperature compensated
Excellent signal processing via QUEST+ software
PP, PVDF housing
Secondary lightning protection
HART communication
Explosion-proof models

APPLICATIONS
Most liquids, explosive liquids
Level, volume and open channel flow measurement
Reliable measurement in challenging applications such as vapour/fume stirrer and foam with liquids
Where IP 68 is needed

SPECIFICATIONS
Power supply: 2-wire: 12-36 V DC, 720mW
4-wire: 11.4-40 V DC, 3.6W or 11.4-28 V AC, 4 VA
Temperature: -30 °C to +80 °C
Pressure: 0.3 .. 3 bar
Measuring range: 0.2 - 15 m
Output: 4-20 mA, relay, HART
Protection: IP 68, ATEX II 1 G EEx ia IIB T6

Nivelco EasyTREK for Solids
Ultrasonic Integrated Level Transmitter

FEATURES
3/4-wire compact transmitter
Low cost
Non-contact level measuring
Narrow 5° beam angle
Temperature compensated
Excellent signal processing via QUEST+ software
Secondary lightning protection
HART communication
Power relay output
Dust-Ex models

APPLICATIONS
Most free-flowing solids
Level, volume or weight calculation
Reliable measurement in challenging applications such as dusting during filling

SPECIFICATIONS
Power supply: 11.4-40 V DC, 3.6W or 11.4-28 V AC, 4 VA
Ambient temperature: -30 °C to +60 °C
Medium temperature: -30 °C to +90 °C
Pressure: 0.7 .. 1,1 bar
Measuring range: max. 60 m
Output: 4-20 mA, relay, HART
Protection: IP 65,
ATEX II 1 D IP65 T130°C

Nivelco MICROSONAR
Ultrasonic Proximity Sensor

FEATURES
Non-contacting sensor
Analogue or switch output
2 measuring ranges: 1 and 6 m
Fully temperature compensated
LED indication
IP67 or IP68 versions
Metal or PP body
Magnet or cable programming
Protection against short circuit and inverse polarity

APPLICATIONS
Proximity switch or transmitter for:
Positioning equipment
Packaging equipment
Filling equipment
Small transport vehicles
Trolleys
Fork-lifts

SPECIFICATIONS
Power supply: 10.8 - 30 V
Ambient temperature: -20 .. +70°C
Ranges: 0.2 - 1 m or 0.4 - 6 m
Resolution: 0,1 mm
Output: 0 - 10 V, 4 - 20 mA, NPN or PNP switch
Protection: IP 67, IP 68

Nivelco PiloTREK
Non-contact Microwave Level Transmitter

FEATURES
2- or 4-wire FMCW technology
TBF mode for low Er
Digital communication
Field indicator facility
High accuracy up to ± 1 mm
High pressure
High temperature range
Low dead band
Explosion-proof models

APPLICATIONS
Level or volume measurement
Liquids, powders, granules with Er > 1.5
Medium with dust, vapour or pressurized gas layers above the product surface
Heavy industrial applications

SPECIFICATIONS
Power supply: 24 V DC, 24 V AC, 100-120 V AC, 220-240 V AC
Flange temperature: -60…+250 °C
Pressure: 0….64 bar
Measuring range: up to 40 m (100m)
Analogue Output: 4…20 mA (active or passive)
Communication: HART, Profibus PA, FF, Modbus (RS485)
Protection: IP 66/67
ATEX approval: II 1/2 G EEx de IIC T6...T1
II 2 G EEx de IIC T6...T1
II 1/2 G EEx de [ia] IIC T6...T1
II (1)2 G EEx de [ia] IIC T6...T1
II 1/2 G EEx ia IIC T6

Nivelco MicroTREK
Guided Microwave

FEATURES
Two-wire TDR Technology
Digital communication
High accuracy: ±5 mm
High pressure range
High temperature range
Extremely low dead band
Large Dot-Matrix graphic display
Local programming feature
Text-based menu system
Plastic coated stainless steel probes (PFA, FEP, PP),
Aluminium and plastic housing
Wide range of probes
Explosion-proof models

APPLICATIONS
Level, volume measurement
Liquids, powders and granular mediums with Er>1.4
Medium with turbulent surface, dense dust, vapour or pressurized gas layers above the product surface
For all tank shapes, for narrow vessels
Heavy industrial applications

SPECIFICATIONS
Power supply: 18-35 V DC
Accuracy: ± 5 mm
Medium temperature: -30...+ 200 °C
Pressure: max. 40 bar
Measuring range: up to 24 m
Output: 4-20mA, loop powered
Communication: HART
Process connection: 1'' 1 1/2'' or flanges
Ingress Protection:IP 65
ATEX approval:
II 1 G Ex ia IIC T6...T3
II 1 G Ex ia IIB T6...T3
II 1D iaD A20/A21 IP65 T100°C

Nivelco NIVOTRAK
Magnetostrictive

2-wire compact transmitter with HART protocol
Linearity: +/-0,25mm or +/-1mm
Resolution: 0,1mm or 1mm
Rigid or flexible probes up to 15 m
Wetted parts stainless steel or plastic
Plug-in field indicator module
99 point linearisation
Distance, level and volume measurement
Level, distance, volume and differential metering
Explosion-proof models
OIML R85 certification

APPLICATIONS
Liquids with min 0.5 kg/dm3 density
For custody transfer
Oil and gas industry
Flammable liquids and solvents
Chemicals, solvents, hydrocarbons
Alcohols and beverages
Installation in bypass tubes feasible
Supplementary level transmitter for NIVOFLIP magnetic flip indicator

SPECIFICATIONS
Power supply: 12.5-36 V DC
Temperature: -40 °C to +90 °C
Pressure: max. 25 bar
Measuring range: 0.5 - 15 m
Output: 4-20 mA , HART
Process connection: 1'', 2'' or flanges
Ingress protection: IP67
Ex marking:
ATEX II 1 G Ex ia IIB T6...T5
ATEX II 2 G Ex d IIB T6...T5
ATEX II 1/2 G Ex d ia IIB T6...T5

Nivelco NIVOCAP
Capacitive Level Transmitters

FEATURES
2-wire compact transmitter with HART protcol
Rod or cable probes up to 20 m
Fully or partly insulated probes
Secondary lightning protection
32 point linearisation
High sensitivity
Aluminium or plastic housing
Explosionproof models

APPLICATIONS
Liquids, powders, granules with Er>1.5 relative dielectric constant
Chemicals with dense gas layers above the surface
Viscose or corrosive mediums
High pressure, high temperature or vacuum

SPECIFICATIONS
Power supply: 12-36 VDC
Ambient temperature: - 25°C to +70°C
Medium temperature: - 30°C to +200°C
Pressure: max. 40 bar
Output: 4-20 mA, HART
Process connection: 1'' or 1 1/2'' or flanges
Protection: IP67
ATEX approval: II 1 G EEx ia IIB T6

Nivelco NIVOFLIP
Bypass liquid level indicator

FEATURES
Clearly visible optical display
Max. 5500mm measuring range
± 10mm accuracy
Max. 100 bar medium pressure
PED (Pressure Equipment Directive) approval
Optional magnetostrictive level transmitter
Optional magnetic limit switches

APPLICATIONS
Oil industry
Chemical industry
Power industry
Boilers
Pressurized vessels

SPECIFICATIONS
Center to center distance: 500-5500mm
Process connection: DN15-DN50 or ANSI 1/2-2” flanges
Process pressure: max. 100 bar
Material of wetted parts: 1.4571 / 1.4404 stainless steel / Ti
Process temperature: -40°C…+130°C
Medium density: with stainless steel float: 0.8-1.25 kg/dm³ / with titan float: 0.5-0.9 kg/dm³
Optional limit switches:
ATEX II (1) [Ex ia] IIC / IIB T4...T6 Ga certified level switch
Optional level transmitter: NIVOTRACK MT-500 series magnetostrictive transmitters