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TREND双金属温度计,TREND温度计,双金属温度计价格
20 2" Back No 30 3" Back Yes 31 3" Bottom Yes 32 3" Adjustable Yes 33 3" Back No 34 3" Bottom No 50 5" Back Yes 51 5" Bottom Yes 52 5" Adjustable Yes 53 5" Back No 54 5" Bottom No
Basic Model: Measure the diameter of the Dial in inches, Also note if there is a screw or "bolt head" in the back. This determines if it can be adjusted or "resettable". Also note the mounting of the stem. the choices are: back, bottom and adjustable angle. You may also find some with left or right hand mounting, but these are less common. Select the Model from the following Table.
General Specifications
Model Dial Size Connection Resettable Stem Length: Measure the stem from the top of the threaded connection to the end of the stem. The standard lengths in inches are: 2.5, 4, 6, 9, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 72. The length is specified as XXX; 2.5" = 025; 72" = 720 A - Trend
D - WikaDial Logo Use "A" for Trend and "D" for Wika 
Scale: There are three types of scales for the dial: Dual Scale, Fahrenheit only and Celsius （Centigrade）. The Dual scale is most common but some consider it confusing and prefer the single scale. Use "0" for Dual, "1" for Celsius and "2" for Fahrenheit Range: Select the two digit range code from the table on the right. Click on the table to see a larger version A - Acrylic
L - Lexan ? （only on 2" & 3" dial）
S - Shatterproof Glass
G- GlassLens: Also know as the window or crystal. The standard is glass. Although tough it can break and leave fragments. Shatterproof glass may break but will not shatter into fragments. Acrylic and Lexan? are plastic lens and may replace the glass. Chemical fumes may fog the acrylic or Lexan? 0 - Plain
1 - 1/8" NPT
2 - 1/4" NPT
3 - 3/8" NPT
4 - 1/2" NPT
5 - G 1/2B
7 - Union ConnectionProcess Connection: By far the most common connection is 1/2" NPT. This connection has a diameter of approx 27/32 （0.840） inches. Other connections are: Plain （None）, 1/8" NPT, 1/4" NPT, 3/8" NPT, G 1/2 B or a Union connection.
Click here to see dimensions for pipes Options: SF - Silicon Fill Silicon Fill is normally used where there is severe mechanical vibration. The silicon dampens and lubricates the internal mechanism, reducing oscillation and premature wear. Max Temp: 50/500 ?F. Only available on Models: 30, 31,32,50,51,52 ST: Sharp Tip Sharp Tip: The tip of the stem is normally round to flat. The sharp tip makes it easier to pierce things 
MM - Min/Max Pointer This is a manual indicator that is moved by the temperature indicator and shows the max. or min temperature reached. It is reset manually. Only available on Models 30 and 50 
Connection Location. Bottom connected thermometers can be orders with the connection oriented to the left （LS）, right （RS） or the top （TS） 
Heavy Duty If the thermometer is going to be inserted into compost, meat, etc. then a heavy duty stem is recommended. Option HD provides a 3/8" heavy duty stem with 2-1/2" x 1/4" OD sensitive tip, the HA option provide for a 3/8" heavy duty stem for the entire length and the HS option provides a 3/8" stem, reduced tip with a sharp point. The thermometer on the left is shown with the optional EZ-Insertion Handle. 
EZ-Insertion Handle. This is recommended where the thermometer is inserted compost, meat etc. It saves using the dial as the handle P/N TA600-0163 316 Stainless Steel The case and stem is made of 304 SS. In some cases where a thermowell is not used, 316 SS is available for the wetted parts. Option code SS
