Product specification: WSS series
Summary
The bimetallic thermometer is a on
site measurement instrument suitable
for measuring middle and high temperature,
and can be used to measure directly
the temperature of gasses and
liquids. Compared with glass thermometer,
it is featured with no mercury
harmness, distinct reading, strong and
durable and other advantages. Our
company produces multipurpose bimetallic
thermometers. The types and
models are complete. The quality is
high and reliable. It can be used widely
in industry, agriculture, national defence
and scientific research etc.
Structure features and working principle
Bimetallic thermometer (hereafter referred to as simply thermometer) is a coiling thermal bimetal temperature sensor. One end is fixed inside the protective sleeve (fixed end) and another end (free end) is connected at a fine axle. The axle end is equipped with a needle. When the temperature changes, the free end of the temperature sensor rotates, hereupon, the fine axle moves the needle. The dial plate indicates the temperature change. The steering drive mechanism in the straight meter moves the needle. The meter housing is made of steel plate, cast aluminium alloy and stainless steel. For the head of the adjustable angle thermometer, by means of corrugated pipe, angle machenism and other parts, the angle can be adjusted freely from the angle type to straight type, or from the straight type to angle type.
The electric contact bimetallic thermometer is added with electrical contacts, adjusting devices, outlet box etc. When the temperature fluctuates, at the moment when the needle (moving contact) and the pre-established temperature control contact (upper limit or lower limit) are connected or disconnected, the relay or the contactor in the control circuit moves, thereby, realizing automatic temperature control or producing alarm.
WSS Series bimetallic thermometers
Main technical parameters
(1)Accuracy class: 1.5
(2) Time constant:
Jacket pipe diameter d=6mm<30s
d=81012mm<40s
(3) The nominal pressure of jacket pipe:
6.4 MPaStatic pressure)
(4)Jacket pipe material:1Cr18Ni9Ti.
Table 1 | ||||||||
Type | Model | Dial plate nominal | Measuring | Value of | Insert length | Jacket pipe | Installation | Housing |
Angle | WSS301 | 60 | -80+40 | 2 | 75 | 6 | Movable | Steel plate |
WSS301A | 050 | 1 | Cast aluminum | |||||
0100 | 2 | |||||||
Straight | WSS311A | 0200 | 5 | |||||
Angle | WSS401 | 100 | -80+40 | 2 | 75 | 8 | Movable | Steel plate |
WSS401A | Cast aluminum | |||||||
Straight | WSS411 | Steel plate | ||||||
WSS411A | Cast aluminum | |||||||
Angle | WSS501 | 150 | 050 | 1 | Steel plate | |||
WSS501A | 0100 | 2 | Cast aluminum | |||||
Straight | WSS511 | 0200 | 5 | Steel plate | ||||
WSS511A | Cast aluminum | |||||||
Adjustable | WSS463 | 100 | 0400 | 10 | 200 | 6 | Fixed thread | Stainless |
WSS461 | 75 | 10 | Movable | Stainless | ||||
WSS461A | Cast |
Note:
A Jacket pipe material: 1Crl8Ni9Ti, if other material is required, that shall be noted.
B Other installation thread required needs to be negotiated separately.
C The flange standards and specifications shall be provided in the flanged connection.
D The nominal diameter of the thermometer dial scale is 100. The insert length for 150 is:
1) When the jacket diameter is 8, the insert length range is 75500mm;
2) When the jacket diameter is 10, the insert length range is 751000mm;
3) When the jacket diameter is12,the insert length range is 12502000mm.
E The requirement on other jacket diameters shall be negotiated separately.
Changzhou Voha Instrument Co., Ltd.