A kind of pen meter of universal meter ground connection stationary installation
Technical field
The utility model belongs to scattered control system (DCS) control technology field, especially a kind of pen meter of universal meter ground connection stationary installation.
Background technology
In DCS technical field of measurement and test, no matter be electromagnetic interference (EMI) or large current interference, bring the induced electricity of interchange or direct current all can to incoherent system.In order preventing from disturbing, test job to be impacted, so control system often can detect input channel, whether to have induced voltage, each measurement relates to the whole measurements in whole input cabinet.So just need multimeter, one of them test pencil is received the earth, is exactly the earth terminal that we often say; Another test pencil is received test channel, by showing that the size of DC voltage or alternating voltage shows whether wrong line or be subject to interference of passage.
Common this test job is generally completed by a people, if table is held in hand, just a surplus hand goes to passage place to measure, the work of ground connection just can only be completed by this hand of holding multimeter so, caused like this inconvenience of test, if distance is short all right in addition, distance surpassed the longest distance of two hands, work and cannot carry out.There is following difficulty in test at present: 1,, in the various situation of surveying work, multimeter takies a hand for a long time, holds table and receives on ground lug simultaneously, has reduced work efficiency.2, the necessary reading of multimeter, ground lug, generally at bottom of cabinet, causes and multimeter closely must be gone up to the test job that just can complete passage, if fastener below can also be seen reading clearly, fastener above, reading may be more inconvenient.3, the passage away from from ground lug, if test voltage-to-ground, needing hand to place farther, such work cannot carry out.4, hand-held multimeter also will be by test pencil ground connection, and the time one is long, easily causes fatigue, and work quality is influenced.So necessary a kind of device of utility model, this device can be connected a test pencil with the earth, the hand of holding multimeter is subtracted to one item missing work, increases work efficiency, and guarantees test mass.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, and proposes a kind of pen meter of universal meter ground connection stationary installation.
The utility model solves its technical matters and takes following technical scheme to realize:
A kind of pen meter of universal meter ground connection stationary installation, comprise metal hollow sleeve pipe straight up, in the lower end of sleeve pipe, be fixedly mounted with the circular metal brace that diameter is greater than casing diameter, at affixed upper left metal earthing sheet, lower-left metal earthing sheet and the right side metal earthing sheet that is mutually hexagonal angle in the isoplanar, edge of metal connecting sheet, described three metal earthing sheet structures are identical, and outboard end is all made the structure of cutting sth. askew.
And the height of described metal hollow sleeve pipe is 100mm, external diameter is 10mm, and internal diameter is 7mm, and internal diameter and pen meter of universal meter diameter match, and pen meter of universal meter is inserted in metal hollow sleeve pipe.
And the length of the metal earthing sheet that described three structures are identical is 30mm, thickness 0.5mm, the described end face length of cutting sth. askew is 10mm.
Advantage of the present utility model and good effect are:
1, the utility model device, can be inserted in pen meter of universal meter in device,
2, the ground lug of the utility model device can insert in grounding screw, guarantees stable.
3, three ground lugs in the utility model, can stablize test pencil on the one hand, in addition according to the position of grounding screw, and can be flexible multi-purpose.
Accompanying drawing explanation
Fig. 1 is the utility model apparatus structure vertical view;
Fig. 2 is the upward view of Fig. 1;
Fig. 3 is that the utility model device upper left metal earthing sheet is used syndeton schematic diagram;
Fig. 4 is that the utility model device lower-left metal earthing sheet is used syndeton schematic diagram;
Fig. 5 is that the utility model device right side metal earthing sheet is used syndeton schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is implemented to be further described, following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
A kind of pen meter of universal meter ground connection stationary installation, as shown in Fig. 1 or 2, comprise metal hollow sleeve pipe 3 straight up, in the lower end of sleeve pipe, be fixedly mounted with the circular metal brace 4 that diameter is greater than casing diameter, at affixed upper left metal earthing sheet 1, lower-left metal earthing sheet 2 and the right side metal earthing sheet 5 that is mutually hexagonal angle in the isoplanar, edge of metal connecting sheet, described three metal earthing sheet structures are identical, and outboard end is all made the structure of cutting sth. askew.
In concrete enforcement of the present utility model, the height of described metal hollow sleeve pipe is 100mm, overall diameter 10mm, and interior diameter 7mm and pen meter of universal meter diameter match, and pen meter of universal meter is inserted in metal hollow sleeve pipe.
In concrete enforcement of the present utility model, the length of the metal earthing sheet that described three structures are identical is 30mm, thickness 0.5mm, and the described end face length of cutting sth. askew is 10mm.
Principle of work
Ground lug is mainly the effect of a kind of " iron chock ", utilizes the gap of screw to insert, on the one hand can be fastening, can produce good earthing effect with grounding screw on the other hand.Ground lug, as shown in Figure 3, during use, screw on the left side, stationary installation, on the right side, is now used upper left metal earthing sheet most convenient.As shown in Figure 4, stationary installation, on the left side, is now used lower-left metal earthing sheet most convenient.Shown in Fig. 5, right side metal earthing sheet is mainly applicable to grounding screw in rack doorframe side.