Kobold VKG Specifications

Viscosity Compensated

Flowmeter and Switch

measuring

•

monitoring

•

analyzing

VKG

● ±5% Full Scale Accuracy

● For High and Low Viscosity Liquids

● Viscosity-Compensated up to Δv=540 cSt

(No Scale Recalibration Necessary)

● Density-Compensated up to Δp=30 lb/ft

● Direct Reading Scales for Oil

● Universal Mounting Positions

● In-line Connections for Easy Installation

● Max. Pressure: 175 PSI

● Brass or Stainless Steel Construction

Available

KOBOLD companies worldwide:

ARGENTINA, AUSTRALIA, AUSTRIA, BELGIUM, BULGARIA, CANADA, CHILE, CHINA, COLOMBIA,
CZECH REPUBLIC, EGYPT, FRANCE, GERMANY, HUNGARY, INDIA, INDONESIA, ITALY, MALAYSIA,
MEXICO, NETHERLANDS, PERU, POLAND, REPUBLIC OF KOREA, ROMANIA, SINGAPORE, SPAIN,
SWITZERLAND, TAIWAN, THAILAND, TUNISIA, TURKEY, UNITED KINGDOM, USA, VIETNAM

05/07-15-2019

3

KOBOLD Instruments, Inc.
1801 Parkway View Drive
Pittsburgh, PA 15205

Main Ofce:

1.800.998.1020

1.412.788.4890
[e-mail]
www.koboldusa.com

Viscosity Compensated Flowmeter and Switch Model VKG

Description

KOBOLD flowmeter and switches type VKG-6000, VKG

-7000, and VKG-8000 fill an important gap in the high
viscosity media measurement field. Using KOBOLD’s
patented viscosity compensation system, these instruments
are largely insensitive to viscosity and density changes during
operation. This development in flow and measurement control
technology has resulted in an extremely versatile instrument
for almost any application.

VKG-7107VKG-6105

Specifications

Base Accuracy: ±5% Full Scale
(Add ±5% Max. for Viscosity
Changes Over a 1...540 cSt Range)

Flow Media: Oil, Water, and Other Liquids
Mounting: Universal, without Recalibration
Measuring Principle: With Float, Spring Loaded
Max. Temperature: 212 °F
Max. Pressure: 175 PSI
Viscosity-Compensated: Up to Δv = 540 cSt with Same

Scale
Density-Compensated: Up to Δp = 30 lbs/ft3 with Same
Scale

Housing: Anodized Aluminum (non-wetted)
Glass: Borosilicate
Fittings: Ni-plated Brass or SS 304
Float: Ni-plated Brass or SS 304
Orifice: SS 301
Spring: SS 301
Seals: NBR for Brass Units, FKM

for SS Units

Elect. Switch Housing: Plastic
Reed Contact: Standard: N/O, Optional: SPDT

max. 230 VDC/0.26 A/60 W
60 VDC/1 A/60 W
max. 240 VAC/0.42 A/100 W
100 VAC/1 A/100 W
cCSAus Approved
Electrical Connection
Standard: DIN 43 650 w/Cable Gland
Optional: DIN 43 650 w/1/2" NPT Conduit
Ingress Protection: IP65 (Electrical Switch)

Order Details (Example: VKG-7104B)

Range

Oil

(GPM)

0.03...0.12 1/4" 13.1 VKG-6101 VKG-6201 VKG-7101 VKG-7201 VKG-8101 VKG-8201 -

0.05...0.3 1/4" 14.5 VKG-6102 VKG-6202 VKG-7102 VKG-7202 VKG-8102 VKG-8202 1/2"

0.1...0.5 1/4" 14.5 VKG-6103 VKG-6203 VKG-7103 VKG-7203 VKG-8103 VKG-8203 1/2"

0.2...0.9 1/4" 13.1 VKG-6104 VKG-6204 VKG-7104 VKG-7204 VKG-8104 VKG-8204 1/2"

0.5...2.0 1/4" 14.5 VKG-6105 VKG-6205 VKG-7105 VKG-7205 VKG-8105 VKG-8205 1/2"

1.0...4.0 1/2" 14.5 VKG-6106 VKG-6206 VKG-7106 VKG-7206 VKG-8106 VKG-8206 3/4"

1.0...5.0 1/2" 14.5 VKG-6107 VKG-6207 VKG-7107 VKG-7207 VKG-8107 VKG-8207 3/4"

0.5...12 3/4" 5.8 VKG-6108 VKG-6208 VKG-7108 VKG-7208 VKG-8108 VKG-8208 1"

1.0...14 3/4" 14.5 VKG-6109 VKG-6209 VKG-7109 VKG-7209 VKG-8109 VKG-8209 1"

0.5...18 3/4" 16.0 VKG-6110 VKG-6210 VKG-7110 VKG-7210 VKG-8110 VKG-8210 1"

2.0...21 1" 14.5 VKG-6111 VKG-6211 VKG-7111 VKG-7211 VKG-8111 VKG-8211 -

* Not for VKG-8000 Series

2

Stand.

Conn.

(NPT)

Press.

Drop
Max.

(PSI)

Flowmeter

Oil Scale

Brass SS Brass SS Brass SS

Flowmeter and Switch

1 N/O Contact Oil Scale

www.koboldusa.com

Flowmeter and Switch

2 N/O Contacts Oil Scale

Options

Spec. Conn.

(NPT)

Suffix "B"

..C = ½" NPT

Conduit
Fitting

..U = SPDT Switch

Contact

..V* = Special

Inlet Fitting
for BVB
Manifold
Mount

No responsibility taken for errors;

subject to change without prior notice.