绿谷国际提供美国进口凝胶时间自动测定仪凝胶时间自动测定仪—22A-240/50性能参数技术指标仪器介绍:准确，便捷测出热固性化合物的凝胶时间，符合ASTM D3056-85 方法规定。在评估如树脂、石蜡、清漆、苯乙烯、单体、陶器制造用化合物、三聚氰胺、甲醛、不饱和油类、热固性粮食和其它的可聚合塑化剂材料的聚合速率时，热固性化合物凝胶点的测定是十分关键的。凝胶点通常的特征是材料的粘度（厚度）突然之间明显增加。通过测绘凝胶时间表VS.1/T(绝对温度)，凝胶点可以确定物质的保存时间。可简单地在两个或者多个高于环境的温度下确定凝胶时间并外推到环境温度。所有测量点应该落在一条直线上。凝胶时间测定仪提供了一个可靠的手段来测量凝胶的时间，这个凝胶时间是指在恒定的控温测试下达到早期稠化状态的时间。主要特点:生产，质控和研究工作的理想产品简单，直观的操作精确的确定热固性化合物的凝固点重复性在± 1 ％之内凝固点处自动关闭功能，保证测试准确凝固点处可视显示，并发声提示显示精确到秒可提供全自动温控器（2295A）便携式设计：小巧轻盈凝胶时间测定仪及其组件一个典型的凝固点测量系统有以下几项：测试样品放置于一个测试管中，并且浸在一个恒温水浴中；旋转玻璃杆主轴置入样品中；玻璃杆连接在主机卡盘上，以1rpm 的速率被同步马达驱动；计时开始，同时凝胶时间测定仪的监控器开始工作，直至达到凝胶点；显示凝胶时间，蜂鸣器和指示灯提醒已达成凝胶时间。2295A 温控器技术指标显示：4 位半LED 显示，1/2 英寸高温度范围：32－1562℉（0－850℃）准确度/分辨率：±1℃ (0－325℃) / 摄氏度模式下0.1℃输入传感器类型：K 型热电偶电源：120V，50/60HZ2295A 数字温控器2295A 型提供了极为安全，自动的变温控制。这为测量凝胶时间时温度浴的控制提供了一个极为理想的方法。仅需在前面板设定期望的温度值（最高可至315℃），2295A 便会以± 0.2℃温度精度维持稳定的温度。选购指南：22A-240/50 凝胶时间测定仪主机, 240V/50HZ2295A 数字温控器2296 K 型热电偶，带5 英尺电源线22A Kit A 启动包：12 个测试管，12 个搅拌轴，12 个塑料轴护套，12 套螺丝，1 个小号扳手973Model 2295A Digital Temperature ControllerThe Model 2295A provides the ultimate in safe,automatic, variable temperature control. It is theideal way to provide temperature bath control for geltime testing. Simply set the front panel to the desiredset point (up to 315° C) and the 2295A maintainsprecise temperature regulation to within ± 0.2°C after temperature stabilization.Gel Time Meter and System ComponentsThe determination of the gelation point for thermosettingcompounds is critical in evaluating therate of polymerization for materials such as resins,waxes, varnishes, styrenes, monomers, potting compounds,melamine, formaldehydes, unsaturated oils,thermosetting foodstuffs, and other polymerizablematerials. The gelation point is usually characterizedby a sudden, pronounced increase in materialviscosity (thickness).The gelation point can help determine shelf life ofa substance by plotting the log of gel time vs.1/t (absolutetemperature). Simply determine gel times attwo or more elevated temperatures and extrapolateto ambient. The points should fall into a straightline. A Gel Time meter provides a highly reliablemeans for measuring the gel time defined as the timefor the material under test to reach the incipientgelled state at a constantly, controlled temperature.SPECIFICATIONS — Model 2295A Temperature ControllerDisplay 4 1/2 digit LED 1/2" highTwo lines of 16 characters. Four-digitprocess-value. Four-digit setpoint valueTemperature Range 32 to 1,562° F (0 to 850° C)Accuracy / Resolution ± 1° C (0 to 325° C) / 0.1° for Centigrade scaleInput Sensor Type K Type ThermocouplePower 120 VAC, 50/60 Hz• Ideal for production, quality control and research work• Simple, Intuitive operation• Determine precise gelation point for thermosetting compounds• Reproducible results within ± 1%• Automatic shut-off at Gel Point for error-free testing• Audible and visual indication at gel point• Self-indicating to nearest second• Fully automatic temperature controller available (Model 2295A)• Portable Design: Compact and lightweightThe precise, convenient way to determineGel Time of thermosetting compounds inaccordance with ASTM D3056-85Gel Time Meter and ComponentsA typical system used to measure the gelation point consists of the followingitems:• The test sample is placed into a test tube and immersed within a constanttemperature bath• A rotating glass rod spindle is placed into the sample•The glass rod is attached to a torsion wire being driven by a synchronousmotor rotating at 1 rpm• Timing commences and the Gel time meter monitors the test until thegel point has been reached• The Gel Time is displayed and a beeper and indicator light provideaudible and visual indication of the gel time being reachedCatalog No. Description Price22A Gel Time Meter, 120V/60HZ22A/50 Gel Time Meter, 120V/50HZ22A-240 Gel Time Meter, 240V60HZ22A-240/50 Gel Time Meter, 240V/50HZ2295A Digital Temperature Controller2296 Thermocouple Type K with 5 Foot Coil Cord 125.0022A Kit A Start up Kit-(12) Test Tubes (2232-5),(12) Stirring Rods (2242-1), 99.00(12) Plastic Sleeves,large & small (2242-2), (12) Allen Set Screws (2242-5),(1) Allen Wrench Small, (0.035")(2232-31)现货 特价销售