VSE-vhm系列齿轮流量计

S o l u t i o n s f o r F l u i d T e c h n o l o g y

2

VHM gear flow meter

Applications

VHM-Flow Response Curves

3

Flow Meter-Dimensions

4

Subplates-Dimensions

5

Type Codes Flow Meter VHM + Subplates AHM

6

7

Type Codes - Signal pick-up

58

33

25

54

36

58

46

M 12 x 125

104

29,5

10

?77

?68

?23

64

36

30

2 x M4

?14

SW12

Flow Meter

VHM

Mountings optional

on snap-in rail

P l u g c o n n e c t o r

M 12x1

K

S

S

Connection Connection

Selection criteria - signal pick-ups

8

Single pick-ups and double pick-ups in Ex-design

9

Signal pick-ups for VHM flow meters

10

Signal pick-ups for VHM flow meters

11

Signal pick-ups with optical fibre technology for VHM flow meters

12

Signal pick-ups with optical fibre technology for VHM flow meters

Flowmeter Selection

The correct choice (interpretation) of the type and size of flowmeter is essen-tial for a troble-tree and safe operation. Due to the large number of different applications and flowmeter models, the technical data in the VSE catalogues are of a general nature. Certain characteristics of the devices depend on type, size and measuring

range as well as the liquid to be mea-sured. Please consult VSE for an exact

choice of flowmeter.

13

14

Barrier amplifier “MK 13-P-Ex 0/24V DC/K15” for VHM flow meters

VSE provides the barrier amplifier type …MK 13-P-Ex 0/24V DC/K15“ for the application of VHM flow meters in areas with explosion hazards. This ope-rates in conjunction with the pick-up systems of VHM flow meters:

The barrier amplifier has an intrinsi-cally safe control circuit and is equip-ped with galvanic isolation between the control and output circuits to the supply.It contains a pulse-switching, short-circu-it-resistant transistor output and is con-nected with screw terminals. The ampli-fier is installed in a plastic housing and is fitted with a snap-in mounting for attachment to an installation rail.

The barrier amplifier must be instal-led outside the Ex area in an electrical cabinet or terminal box. The intrinsical-ly safe control lines must be laid and marked according to the design specifi-cations of VDE 0165.

VIL.-..../Ex ;VTL.-..../Ex Single pick-up with plug connection VDL.-..../Ex

;

VEL.-..../Ex

Double pick-up with plug connection

The two gearwheels of the instrument are set into motion by the volume flow passing through the flow meter. Each tooth of the gearwheel is scanned by a single or double signal pick-up, which

rotation of the gearwheel.

The volume conveyed out of a tooth gap

is designated as the measuring volume

Vm, which determines the significance

of the impulses depending on the size General principle of functioning

15

Products

Precision gear type flowmeters for

08/06 w w w .p l a k a r t.d e

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