Home
Cart

Cart

product added to request

Get an offer

Full name*

E-Mail*

telephone*

Company*

street*

place*

zip code*

country*

additional information

I agree that my details and data are collected and stored electronically in order to answer my enquiry.

Your cart

24 article(s) in your cart
pos.	image	product	Configure	Actions
1		OAA-300
2		Ex-BK
3		XR Relais
4		ZS-2
5		TK-315
6		KST-20 VENTO CO2
7		Fluidix Lub-VDT
8		T20x.F
9		KS-17
10		ViscoScope® VA-100
11		VS-D250
12		T201
13		TSR-CAN-03
14		ZT-V
15		EP 24V
16		NSP-X-E
17		PVG-399
18		ZDT-H
19		ES-22
20		T205 VA
21		TK-309-0
22		ZS-1
23		BK-390
24		T205 PP

OAA-300 configure

1 Ausführung

2 Versorgungsspannung

3 Signalgeber

Amount

additional infomation

Ex-BK configure

1 Ex

Amount

additional infomation

XR Relais configure

1 Kanalanzahl

2 WHG

3 Gehäuse

4 Ausgang

5 Schaltverzögerung

6 Versorgungsspannung

7 Busanschluss

8 SIL

9 ATEX

Amount

additional infomation

ZS-2 configure

1 Signalausgang

2 Druckmessbereich

3 Prozessanschluss

Amount

additional infomation

TK-315 configure

1 Gehäuse

2 Eingang

Amount

additional infomation

Fluidix Lub-VDT configure

1 Signalausgang

2 Messbereich

Amount

additional infomation

T20x.F configure

1 Führungsrohr

2 Sicherheitsfunktion

3 Rohrmaterial

4 Anschlussgewinde

5 Ausführung

6 Schaltkontakte

7 Schwimmermaterial

8 Anschlussdose

9 Länge

Amount

additional infomation

ViscoScope® VA-100 configure

1 Viscosity

2 Temperature

3 Process-Connection

4 Material

5 Ex-Area

Amount

additional infomation

VS-D250 configure

1 Ausgänge

2 Spannungsversorgung

3 Gehäuse

Amount

additional infomation

ZT-V configure

1 Measuring range

2 Output signal

3 Connection

4 Process connection

Amount

additional infomation

EP 24V configure

1 Sondenkörpermaterial

2 Stabmaterial

3 Kabellänge

4 Leitungsüberwachungswiderstand

5 Kabelmaterial

6 Ex-Zulassung

Amount

additional infomation

NSP-X-E configure

1 Messbereiche

2 Gabeloberfläche

Amount

additional infomation

PVG-399 configure

1 Ausführung

Amount

additional infomation

ES-22 configure

1 Measurend

2 Safetyfunction

3 Direction

4 measuring-range

Amount

additional infomation

TK-309-0 configure

1 Gewinde

2 Schwimmerausführung

3 Anschluss

4 Rohrlänge

5 Auflösung

6 Explosionsschutz

7 Zubehör

Amount

additional infomation

ZS-1 configure

1 Signalausgang

2 Druckmessbereich

3 Prozessanschluss

Amount

additional infomation

BK-390 configure

1 Rohr-Außendurchmesser

2 Kontakt

3 Stecker

Amount

additional infomation

OAA-300

Alarm Indicator (Measuring Transducer) with general approval for construction

Our alarm indicators type OAA-300 are stand-alone signaling devices with optic and acoustic alarm indication.

Properties

Protection class EN60529 : IP 65
Operating temperature : – 20…+60 °C
Storage temperature : – 30…+80 °C
Sensitivity : bei konduktiver Messung: 3, 10, 30, 100kΩ
Dimensions : 170 x 190 x 85 mm
Weight : ca. 0,8 kg

Control circuits

Open circuit voltage : max. 10 V DC
Short-circuit current : max. 10 mA
Switching delay : ca. 0,5 s

Power supply

nominal voltage : 230 V AC (optional 24, 115, 240 V AC 24 V DC
Nominal frequency : 48...62 Hz
Power consumption : max. 3 W/VA

Output

Switching voltage : max. 250 V
Switching current : max. 3 A
Switching capacity : max. 500 VA | max. 50 W
Volume : 75 dB

Ex-BK

Bistable change-over contact

Magnetically actuated changeover switch, which permanently changes its electrical switching state as a result of a magnetic system passing by, depending on the direction of movement.

Properties

Protection class EN60529 : IP 65
Operating temperature : –20...+120 °C
Wire cross-section max. : 1,5mm²
Switching point distance between two contacts : min. 40 mm
Switching hysteresis : ca. 10-15 mm
Dimensions : 80 mm x 75 mm x 57 mm

Material

Housing : Aluminium
Mounting clip : V2A
Rivet : V2A
Screw connection : M 20 x 1.5, V2A

Weight

BK-390-50 : 137 g
BK-390-63 / BK-380 : 140 g

Switching contact

Switching voltage : 24...250 V AC/DC
Switching current : 20 mA...6 A AC/DC
Switching capacity(min.) : max. 500 VA, 60 W
Switching capacity(max.) : min. 2 VA/W

XR Relais

Electrode relays and contact protection relays

The electrode relays are used for conductive level detection. levels. The possible applications extend areas where conductive, liquid media are to be detected, controlled to be detected, controlled or regulated. Hereby level detection (overflow / dry run) as well as minimum / maximum as well as minimum / maximum controls can be realised. The contact protection relays are universal measuring transducers, which input signals (resistance values) with "Namur" specification (DIN EN 60947). Namur" specification (DIN EN 60947) into switching signals of floating output contacts.

Protection class EN60529

clamp : IP20
Housing : IP40

Technical Data

Operating temperature : -20...+60 °C
Storage temperature : -30...+80 °C
Output contacts : potentialfrei
Switching voltage : min. 5 V | max. 250 V AC / 150 V DC
Switching current : min. 5 mA | max. 5 A AC / 5 A DC
Switching capacity : min. 300 mW | max. 100 VA / 50 W
Weight : ca. 170g
CE marking : siehe Konformitätserklärung
Ex-protection/IECEx : siehe Prüfbescheinigung

ZS-2

Differential pressure sensor for low pressure

Compact and robust differential pressure transmitter for measurement on air and other non-aggressive media

Properties

Pressure type : Differenzdruck
Housing : Aluminium
medium : Luft und nicht aggressive Gase

Measurement parameters

response time : < 2,5 s
Hysteresis : 0,1 %
Overload capacity : 4* fach bis 500 mbar, darüber 2* fach
Signal output selection : 0...10 V | 4...20 mA, 2-Leiter

Operating conditions

Operating voltage : 24 VDC/AC ±10 % (0...10 V) | 15...30 VDC (4...20 mA)
Operating temperature : -20...+50 °C

Connections

Electrical connection : Schraubklemme im Gehäuse
Process connection : Schlauchanschluss 4 mm oder 6 mm
Cable gland : PG 7

Pressure measuring range

0...2,5mbar :
0...5mbar :
0...10mbar :
0...25mbar :
0...50mbar :
0...100mbar :
0...250mbar :
0...500mbar :
0...1.000mbar :

TK-315

Evaluation unit with 4 limit contacts (NO-contacts)

The TK-315 limit comparator can be used in conjunction with our TK-30... continuous level sensors with 0(4)...20 mA or 0...10 V output signal for level control/measurement.

Properties

Protection class EN60529 clamp : IP 20
Protection class EN60529 front panel housing : IP 40
Operating temperature : –20...+60 °C
nominal voltage : 24... 230 V AC/DC
Power consumption : 2 VA
Dimensions housing type B : 22,5 x 114,5 x 99 mm
Dimensions housing type C : 22,5 x 114,5 x 114 mm

Input

power : 0/4...20 mA
Voltage : 0...10 V
Resistance in three-wire circuit RG : 0–4...10 kΩ

Output

Output contacts : 4 Schließerkontakte
Switching voltage : max. 250 V AC
Switching current : max. 3 A
Switching capacity : max. 500 VA
Temperature influence tolerance : max. ± 0,6 % der Signalspanne
Mounting : Tragschiene nach EN 50022
Current output : 4...20 mA bezogen auf die Masse des Eingangs
Display (%) : 2-stellig, 7-Segment
Weight : 175 g

KST-20 VENTO CO2

KST-20 Vento with air quality monitoring function

Automatic, controlled ventilation and dehumidification of rooms with the aH-Controlled technology*

Properties

measuring range (Humidity) : 0…100 % rF,
Measuring accuracy (humidity) : ±2 %
measuring range (Temperature) : -40…+80 °C
Measuring accuracy (temperature) : ±0,2 °C
Signal output : I2C
measuring range (CO2) : 0…5.000 ppm
Adjustable limits : 1.000…1.500 ppm
Power supply : 230 V AC
Protection class : IP 65
Dimensions (LxBxH) : 160 x 90 x 50 mm
Housing : hochwertiges ASA+PC (UL 94 V-0) für harte Beanspruchung, flammwidrig und selbstverlöschend

Measuring range

measuring range (Humidity) : 0...100 % rF
Measuring accuracy (humidity) : ± 2%
measuring range (Temperature) : -40...+80 °C
Measuring accuracy (temperature) : ± 0,2 °C
measuring range (CO2) : 0…5.000 ppm
Adjustable limits : 1.000...1.500 ppm

Fluidix Lub-VDT

Oil condition sensor for permanent monitoring of mechanical properties of liquids

The FluidIX Lub-VDT enables inline monitoring of mechanical fluid properties.

Properties

CE marking : EN 61000-6-1/2/3/4
Operating voltage : 9...32 V DC
Housing material : Edelstahl
Protection class : IP 67
Dimensions : 30x90 mm
Process connection : G 3/8"
Electrical connection : M12-8 A-Coding
Weight : 150g
Measurement output : 2x 4...20mA
bus protocol : ModbusRTU, CANopen

Measured variables

Resonator frequency : 20...25 kHz
Viscosity : 1-650 cSt (mm²/s)
density : 0.5-1.5 g/cm³
Temperature : -40...+125°C
sampling rate : 1/s

Operating conditions

Temperature of the fluid : -40...+125°C
Housing temperature : -40...+100°C
oil pressure : Max. 50 bar
particle size : 250 μm

T20x.F

Overfill protection for containers

Level sensors type T-20_.F... are approved by the DIBt (German Institute for Structural Engineering) as liquid level limit switches for the overcharge protection of containers for storing water-dangerous liquids.

Connection

Box : Polyester
Box : Aluminium
Box : Polyethylen
Box : Kabel
Box : Stecker

Properties

Protection class EN60529 : IP 65
connection thread : G 1", G 1¼", G 1½", G2", G3”
Union nut : G 2¾", S 100x8
Guide tube length : max. 6 m
Operating temperature : atmosphärisch; PP max. 90°C
Operating pressure : Max. 20 bar
media density : ρ ≥ 0,6 g/cm³ (je nach Schwimmertyp)
Switching hysteresis : typ. 2 mm
Switching point tolerance : max. 2 mm

Resistance value

Operational readiness : ca. 1 kΩ
overfill alarm : ca. 12 kΩ
Switching time : ca. 20 ms
ltdata. :

KS-17

digital climate transmitter

The digital climate sensor measures temperature and relative humidity in a combined sensor element.

Technical specifications

Housing : Plastik
Measured variable : Temperatur und relative Feuchte kapazitiv (alle Geräte)
Measurable temperature : -40…+120 °C
Measuring range humidity : 0…100 % rH
Sensor technology : Halbleiter
Power supply : 2,4…5,5 V
Output : digitales Protokoll
features : Gehäuse für Oberflächenmontage

ViscoScope® VA-100

Inline Viscometer

Maintenance-free inline viscosity sensor for precise and reliable real-time measurement of viscosity directly in the process.

Properties

Material : 1.4571 / 1.4404 (316Ti / 316L)
Protection class : IP65
Process temperature : -10°C … +130°C | (integriertes Pt100 im Messfühler)
max. process pressure : Vakuum ... 64 bar
Process connections : NPT | M48 | Varivent® | Tri-Clamp
Cable length sensor - transmitter : Max. 1.000 Meter
max. flow velocity : 5 m / sec
Ex approval : II 1/2G Ex ia IIC T6...T3 Ga/Gb | (optional)

Sensor types

Sphere : VA-100B
Cylinder : VA-100C

Repeatability

VA-100B : ± 0,5% | ± 1 Digit
VA-100C : ± 0,3% | ±1 Digit

Measuring ranges

VA-100B : 0,1 - 2.500 mPa·s x g/cm³
VA-100C : 10 - 25.000 mPa·s x g/cm³

Probe dimensions

VA-100B : Ø 32 x 145 mm
VA-100C : Ø 32 x 120 mm

installation positions

Reservoir :
tanks :
Pipe :
flow cell :
Installation is position-independent :

VS-D250

Transmitter for ViscoScope viscosity sensors

Maximum flexibility for an optimal choice of measuring instrument: The VS-D250 transmitter is compatible with all ViscoScope® sensors of the types VA-100 and VA-300.

Properties

Output card socket : 2
External input : 0/4…20 mA | 0/2…10 V DC
Power supply : 24V DC, 12 W
Dimensions : 142 x 106 x 73 mm (L x B x H)
Front : RS232, MODBUS RTU (Standard)

Display and Operation

Lines : 4
Pages : 2
Character set : alphanumerisch
Buttons : 3 (front)

Alarms

system function :
sensor diagnosis :
Coil Temperature :
2 configurable LEDs :

optional outputs

0/4…20mA | 0/2…10V DC (active) :
RS232 | RS485 :
2 SPDT-Relays: RS232 | RS485 :

Filter

Moving average (200 measured values) :

T201

Immersible Magnetic Probe made of stainless steel (1.4571)

Magnetic immersion probes for use with highly aggressive liquid media for detecting level limits in containers

Properties

connection : Polyesterdose | Aluminiumdose
Protection class EN60529 : IP 65 Anschlussdose
Connector plug : 3- und 6-fach
connection thread : G 1/8" | G 3/8" | G 1/4" | G 1/2" | G 1" | G1 1/4" | G1 1/2" | G2" | G3"
connection cable : LiYY max. 80 °C | PTFE-Litze, 0,24 mm² | Silikon max. 150 °C
Sliding tube length : max. 1000 mm (Rohr Ø 8 mm) | 6000 mm
Operating pressure : max. 20 bar
Viscosity : < 100 cp
Protection class EN60529 : IP 68 Führungsrohr
Switching voltage : max. 250 V
Switching hysteresis : ca. 2...5 mm
Holding range : ca. 12 mm
Contact function : monostabil | bistabil

Operating temperature

ltdata. : max. +60...+150 °C
ltdata. : min. –20... –10 °C
ltdata. : höhere oder niedrigere Temperaturen auf Anfrage

Switching capacity

Changeover contact : 60 W/VA
normally open : 100 W/VA
Normally closed contact : 60 W/VA

Switching current

Changeover contact : max. 1 A
NO/NC contact : max. 2 A

Contacts

Changeover contact : 8
normally open : 10
Normally closed contact : 7

TSR-CAN-03

CANopen transmitter for temperature measurement in media

High-quality stainless steel transmitter for precise temperature measurement in all stainless steel-compatible media

Measurement parameters

Measuring range : -40…+80 °C (optional +150°C)
deviation : ± 0,3 K (-40…+80 °C)
Measuring element : Halbleiter
measuring resolution : 10 Bit
measuring grid : ab 5 ms

ElectricalConnection

CAN protocol : CANopen 2.0 A, nach ciA DS 404
Physical Layer : nach DIN 11898
Operating voltage : 12…27 V ±20 %

Operating conditions

Operating temperature : -40...+80 °C
Storage temperature : -40°C...+120°C
Shock resistance : 30g, Dauer: 14 ms bei Raumtemperatur
Vibration resistance : 10g bei 20 bis 1000 Hz

ZT-V

Reliable pressure measurement and optimum process monitoring with the ZT series

From low to high pressure and suitable for liquid and gaseous media.

Connection

Signal output : 0...10 V, 3-Leiter | 0,5...4,5, ratiometrisch | 4...20 mA, 2-Leiter
Electrical connection : DIN EN 175301-803 A | DIN EN 175301-803 C | Binder M12x1 (Serie 713)
Process connection : G 1/4" ISO 1179-2 (Male Form E) | 1/4" NPT | 7/16" 20 UNF Male
measuring range (bar) : 0…0,6 | 0…600

Properties

Pressure type : Relativdruck | Absolutdruck
Housing : Edelstahl
Overpressure : 1,5* fach bis 400 bar, darüber 1,2* fach
Bursting pressure : 3* fach bis 600 bar, darüber 1,5* fach

Measurement parameters

response time : < 1 ms
Total error : ≤ 0,5 % FS
Non-linearity : ≤ 0,2 % FS
Non-repeatability : ≤ 0,10 % FS
Hysteresis : ≤ 0,15 % FS

ambient conditions

Temperature of the fluid : -40...+125 °C (0...+80 °C kompensierter Bereich)
Ambient temperature : -40...+105 °C
Storage temperature : -40°C...+125°C
Shock resistance : g 1000 gemäß IEC 60068-2-32
Vibration resistance : g 20 gemäß IEC 60068-2-6

EP 24V

Plate Electrode as Leak Detector (conductive)

with general approval for constructions Z-65.40-191

Properties

Protection class EN60529 : IP 68
Operating temperature : atmosphärisch
Operating pressure : atmosphärisch
Resistance value of line monitoring : 22 kΩ / 100 kΩ
cable length : auf Wunsch

Material

Cable : TPK (PVC Basis)
Sensor rods : Edelstahl (1.4571) | Hastelloy B | Hastelloy C | Titan | Tantal | Glaskohlenstoff

Options

cable material : FEP (Teflon) | EX (PVC blau)

NSP-X-E

Vibrating Limit Switch

The vibrating limit switch is a level limit switch for all kinds of fluids and is used in tanks, containers and pipelines.

Properties

Protection class EN60529 : IP 65/IP 67
Operating pressure : ≤ 40 bar
media density : ρ ≥ 0,7 g/cm³
Viscosity : max. 10000 mm²s
Rated current : < 15 mA
Protection class : III
Output : PNP
power : kurzschlussfest, überlastsicher
Display : LED (grün, rot)
Switching delay (cover) : ca. 0,5 s
Switching delay (release) : ca. 1 s

NSP-1-E

connection thread : G 1”
Operating temperature : –40...+150 °C
Storage temperature : –40...+85 °C
nominal voltage : 10...55 V DC (verpolsicher)
Current output : ≤ 350 mA

NSP-2-E

connection thread : G ½”
Operating temperature : –40...+100 °C
Storage temperature : –20...+70 °C
nominal voltage : 10...35 V DC (verpolsicher)
Current output : ≤ 250 mA

PVG-399

PVC weight with magnet insert and eyelet for cable fixing

for actuating monostable and bistable contacts

Variants

32 : Außen Ø 25 mm x 175 mm, Gewicht ca. 180 g, geeignet für Rohraußen Ø 32 u. 34 mm bis 6m Länge
37 : Außen Ø 30 mm x 170 mm, Gewicht ca. 180 g, geeignet für Rohraußen Ø 40 mm bis 6m Länge
40 : Außen Ø 40 mm x 110 mm ca. 175g, geeignet für Rohraußen Ø 50 mm bis 6m Länge
4012 : Außen Ø 40 mm x 110 mm ca. 300g, geeignet für Rohraußen Ø 50 mm bis 12m Länge
4016 : Außen Ø 40 mm x 110 mm ca. 360g geeignet für Rohraußen Ø 50 mm bis 16m Länge
50 : Außen Ø 50 mm x 130 mm ca. 255g, geeignet für Rohraußen Ø 63 mm bis 6m Länge
5012 : Außen Ø 50 mm x 130 mm ca. 300g geeignet für Rohraußen Ø 63 mm bis 12m Länge
5016 : Außen Ø 50 mm x 130 mm, ca. 360g, geeignet für Rohraußen Ø 63 mm bis 16m Länge

ZDT-H

Differential pressure transmitter for high pressure applications

Versatile and reliable differential pressure transmitter for measuring air, non-aggressive media as well as liquids and oils.

Properties

Pressure type : Differenzdruck
Housing : Kunststoff mit LCD-Anzeige (oponal)
Overpressure : 1,2* (1,5*) x Nenndruck

Measurement parameters

Total error : ± 2,5 % FS (typ. ± 0,5 %)
Linearity error : ± 1 % FS
Signal output selection : 0...10 V 4...20 mA, 2-Leiter 4...20 mA, 3-Leiter
Pressure range : 5…1.000 bar

Operating conditions

Operating voltage : 14...28 VDC ± 10 %
Operating temperature : 0...+50 °C
Storage temperature : -20°C...+120°C

Connections

Electrical connection : Schraubklemme im Gehäuse
Process connection : G1/4" (andere auf Anfrage)

ES-22

electronic safety pressure limiter with 2 safety functions

TÜV-certified, type-tested electronic safety switching device (SIL2)

Properties

Operating voltage : 16...32 V DC (max. 5,9 W)
Dimensions : 150 x 60 x 42 mm (L x B x H)
Housing : Aluminium (eloxiert)
Protection class : IP65

Approvals

DGRL 2014/68/EU Kat:IV : Baumustergeprüft gemäß Druckgeräterichtlinie
DIN EN12263:1998 : Kälteanlagen und Wärmepumpen Sicherheitsschalteinrichtungen zur Druckbegrenzung -Anforderungen und Prüfungen; Kategorie IV
DIN EN378:2020 : Kälteanlagen und Wärmepumpen - Sicherheitstechnische und umweltrelevante Anforderungen
DIN EN61508:2011 : SIL2

Measuring ranges

Measuring range relative pressure (nominal pressure) : -1…500 bar
Measuring range differential pressure (nominal pressure) : 0…1 mbar - 0…1.000 mbar
Setting accuracy (from nominal pressure) : 0,1 %

Operating conditions

Pressure type : Relativdruck, Differenzdruck
Temperature of the fluid : -40…+125 °C
Ambient temperature : -20…+65 °C
Parts in contact with media : Edelstahl

process connection

Version relative pressure : G ¼“ Innengewinde
Version differential pressure : G ⅛“ Innengewinde
Adapter for process connection : 6mm; 8mm oder 10mm

electrical connection

Analogue current output : 1x 4…20 mA
Digital inputs/outputs : 2x Alarm oder 1x Alarm & 1x Fernentriegelung

Load capacity of the switching contacts DC (24V)

DC1 : 16 A
DC13 : 1,5A

Load capacity of the switching contacts AC (230V)

AC1 : 16 A
AC3 : 10 A
AC15 : 7 A

T205 VA

Stainless steel magnetic immersion probes

Magnetic immersion probes for use with highly aggressive liquid media for detecting level limits in containers

Properties

Protection class : IP 65
Number of floats : max. 2x Typ 08
connection cable : Silikon Litze
Operating temperature : max. 100 °C
Operating pressure : max. 10 bar (Zylinder)
Number of contacts : max. 2 x Schließer/ Öffner wahlweise durch 180°-Drehung des Schwimmers bei 2 Schwimmern
Switching current : 1 A
Switching voltage : 250 V AC
Switching capacity : 50 W/VA
Sliding tube length : max. 1000 mm
media density : Typ 08: 0,78 g/cm³
float : Zylinder Edelstahl 1.4571 27 mm Ø
min. contact distance with several floats : 50 mm

TK-309-0

Stainless steel level sensor for Ex-Zone 0 (Cat.1)

T30... continuous magnetic immersible probes are used for quasi-acquisition of the filling level in containers with liquid media.

Technical Data

Protection class Socket : IP65
Float type : Typ 07
Sliding tube length : max. 6000 mm
Operating temperature : max. 135 °C
Operating pressure : max. 20 bar
media density : Typ 07: 0,54 g/cm³
Resolution : 7,5 mm | 10mm |15 mm | 20 mm
Accessories : R/I-Wandler TK-101

ZS-1

Differential pressure sensor for low pressure

Compact and robust differential pressure transmitter for measurement on air and other non-aggressive media

Properties

Pressure type : Differenzdruck
Housing : Aluminium
medium : Luft und nicht aggressive Gase

Measurement parameters

response time : < 2,5 s
Hysteresis : 0,1 %
Overload capacity : 4* fach bis 500 mbar, darüber 2* fach
Signal output selection : 0...10 V | 4...20 mA, 2-Leiter

Operating conditions

Operating voltage : 24 VDC/AC ±10 % (0...10 V) | 15...30 VDC (4...20 mA)
Operating temperature : -20...+50 °C

Connections

Electrical connection : Schraubklemme im Gehäuse
Process connection : Schlauchanschluss 4 mm oder 6 mm
Cable gland : PG 7

Pressure measuring range

0...0,25mbar :
0...0,5mbar :
0...1mbar :
0...2,5mbar :

BK-390

Bistable change-over contact

Magnetically actuated changeover switch, which permanently changes its electrical switching state as a result of a magnetic system passing by, depending on the direction of movement.

Properties