產(chǎn)品中文介紹：
WZPK-425U型電接點(diǎn)雙金屬溫度計(jì)是一款基于金屬熱膨脹原理設(shè)計(jì)的工業(yè)級(jí)溫度測(cè)量?jī)x表。該產(chǎn)品通過雙金屬敏感元件的形變特性實(shí)現(xiàn)溫度感應(yīng)，并結(jié)合電接點(diǎn)裝置實(shí)現(xiàn)溫度信號(hào)的輸出與控制功能。整機(jī)采用一體化結(jié)構(gòu)設(shè)計(jì)，表殼與測(cè)量元件之間采用密封工藝處理，可適應(yīng)多種工業(yè)環(huán)境的長(zhǎng)期穩(wěn)定運(yùn)行需求。
產(chǎn)品核心組件由多層精密合金片經(jīng)特殊工藝復(fù)合而成，通過金屬層間熱膨脹系數(shù)的差異實(shí)現(xiàn)溫度-形變的高靈敏度響應(yīng)。表頭部分配備可旋轉(zhuǎn)刻度盤及雙指針系統(tǒng)，主指針實(shí)時(shí)指示當(dāng)前溫度值，輔助指針可通過外部調(diào)節(jié)預(yù)設(shè)溫度閾值。當(dāng)被測(cè)介質(zhì)溫度達(dá)到預(yù)設(shè)值時(shí)，電接點(diǎn)裝置將觸發(fā)信號(hào)輸出，適用于設(shè)備過熱保護(hù)、溫度聯(lián)鎖控制等工業(yè)自動(dòng)化場(chǎng)景。
該型號(hào)溫度計(jì)采用徑向安裝結(jié)構(gòu)，測(cè)量桿長(zhǎng)度可根據(jù)用戶需求定制（常規(guī)規(guī)格為75-500mm），過程連接件支持螺紋或法蘭等標(biāo)準(zhǔn)接口。表殼選用304不銹鋼材質(zhì)，表面經(jīng)拉絲工藝處理，防護(hù)性能可達(dá)工業(yè)防塵防水要求。觀測(cè)窗采用鋼化玻璃材質(zhì)，配合高對(duì)比度刻度標(biāo)識(shí)，確保在復(fù)雜光線條件下的讀數(shù)清晰度。工作溫度范圍覆蓋-40℃至400℃，基本誤差控制在量程范圍的±1.5%以內(nèi)。
產(chǎn)品廣泛應(yīng)用于食品加工設(shè)備的溫度監(jiān)控、化工反應(yīng)釜的溫度保護(hù)、暖通空調(diào)系統(tǒng)的溫度調(diào)節(jié)等場(chǎng)景。其結(jié)構(gòu)設(shè)計(jì)考慮了現(xiàn)場(chǎng)維護(hù)便利性，在不拆卸儀表的情況下可通過頂部調(diào)節(jié)旋鈕進(jìn)行參數(shù)設(shè)定。為適應(yīng)不同工況需求，電接點(diǎn)額定負(fù)載可提供多種規(guī)格選配，觸點(diǎn)材料采用銀合金材質(zhì)以增強(qiáng)電氣耐久性。安裝時(shí)建議保持測(cè)量桿完全浸入被測(cè)介質(zhì)，避免劇烈機(jī)械振動(dòng)環(huán)境，定期進(jìn)行示值校驗(yàn)可延長(zhǎng)產(chǎn)品使用壽命。
產(chǎn)品英文介紹：
The WZPK-425U Bimetal Thermometer with Electrical Contact is an industrial-grade temperature measurement instrument based on the thermal expansion principle of metallic materials. Utilizing the deformation characteristics of a bimetallic sensing element for temperature detection, this device integrates electrical contacts to enable temperature signal output and control functions. The compact unitary structure features sealed connections between the housing and sensing components, ensuring reliable performance in various industrial environments.
At the core of the device lies a multi-layer precision alloy composite formed through specialized processing techniques. The differential thermal expansion coefficients between metal layers enable highly responsive temperature-deformation conversion. The dial assembly incorporates a rotatable scale plate with dual indicating needles - the primary needle displays real-time temperature while the auxiliary needle allows preset threshold adjustment via external calibration. When the measured temperature reaches the preset value, the electrical contact mechanism activates signal transmission, suitable for equipment overtemperature protection and process automation control applications.
Designed with radial mounting configuration, the thermometer s immersion length can be customized from 75mm to 500mm according to application requirements. Process connections accommodate standard threaded or flanged fittings. The 304 stainless steel housing with brushed surface finish provides adequate protection against environmental factors. The viewing window utilizes tempered glass combined with high-contrast scale markings to ensure readability under challenging lighting conditions. Operational temperature range spans from -40℃ to 400℃ with basic accuracy maintained within ±1.5% of span.
This model finds typical applications in temperature monitoring for food processing equipment, overheat protection of chemical reactors, and climate control systems in HVAC installations. The maintenance-friendly design allows parameter adjustment via top-mounted calibration knob without disassembling the instrument. Multiple contact load ratings are available to match different operational requirements, with silver alloy contacts enhancing electrical durability. For optimal performance, complete immersion of the sensing stem in the measured medium is recommended, along with avoidance of excessive mechanical vibration. Periodic verification helps maintain measurement accuracy and prolong service life.
