Product Name: Wtzk-50-C Pressure Type Temperature Switches for Vessel Model NO.: WTZK-50-C Certification: ISO9001, CE Brand: Tian Xiang Detection Method: Correlation Type Contact Type: Type a Contact Contact: Normally Open Explosion-proof Type: Non Explosion-proof Application: Industrial Usage: Control Switch Structure: Power Built-in Type Number of Switch: Single Control Switch Type: Mechanical Principle: Capacitive Wires: Two-Wires Trademark: Tian xiang Transport Package: Inner Box, Carton Origin: China HS Code: 9026800000 Product Description WTZK-50-C Pressure Type Temperature Switches for VesselThe Sensor of the Switches is capillary thermometer bulb, can be apply to gas which will not exert corrosion onBrass and Brass alloy, steam such gasous medium or liquid medium. The Set Point Adjustable range is from-60ºC to +170ºC. WTZK-50-C, the shell material is Casting Aluminum, water-proof structure can meet therequirements of vessel use. WTZK-50, the shell is phenolic plastic, it is the general type.Dead Band AdjustableSeries No.Set Point Adjustable RangeºCDead Band Adjustable RangeºCAmbient TemperatureºCSet Point Error ±ºCRepeatability ErrorºC1-60…-303~5-25~55422-40…-103ºC's higher than the controlled temperature, not lower than -25ºC, maximum to 55ºC23-25…04-15…+15510…40-25~55640…80-25 to which is 3ºC's lower than the controlled temperature, to maximum 55ºC760…100-25~5533880…1209110…1505~5510130…170The Adjustment of Set PointThe steps of how to adjust the Set Point, please refer to belows[Example] Choose Temperature Switch of specifications -15ºCto 15ºC, it is required maintain the refrigeratorytemperature between -8ºC to -5ºC. See the steps listed belowFix the thermometer bulb in the refrigeratory, mount the switch on the dash board outer the refrigeratory, thecapillary should be fixed steady, link the switch and power circle by leadsRotate the Set Point Adjusting Bolt, to make the pointer stay at the calibration of -8ºC. This is the DecreasingSet Point.Switch should auto switch-off when interior temperature fall to -8ºC, and switch-on when temperature warm-upto -5ºC, this is the Increasing Set Point, repeat the steps for several times to make sure.InstallationRemove the cover, put the Switch onto the gauge instrument board vertically, Any hand or tool touch with the isforbidden, to avoid the change of the performance.Screw-off the Lock-nut and rotate the Set Point Adjusting Bolt, to make the pointer stay at the calibration whichis to be set, fasten the Lock-nut.Rotate the Dead Band Adjusting Bolt, to the value of needs.Thermometer bulb and capillary: Thermometer bulb should be immerged in the medium, the surroundingmedium should keep flow with average temperature, the capillary pipe curve radius should not smaller than50mm. Each 300mm a clip should be used to fix the capillary on the instrument board. Series no. 1 to no. 4, theambient temperature for the capillary to pass through should be higher than 3ºC of the Set temperature. Seriesno. 9 to no. 10, the ambient temperature should be higher than 5ºC, please avoid to flat the capillary bymachanical collision during installation.Countercheck if the installation is steady, re-cover the enclosure, electrify the power. Regular calibrating theSwitches according to its application situation.CautionsWhat the pointer indicates is the Decreasing Set Point, the Set Point Adjustable Range just the AdjustableRange of the Decreasing Set Point.The figures on the Dead Band Adjusting Bolt does not REPRESENTS the actual value of the Dead Band but themagnitude grade. The actual value should be read from the standard gauge.When the medium which is to be controlled does not exceed a certain given pressure, the pointer should be atthe position which is smaller than the given figuer, once it is fixed, DO NOT rotate the Dead Band Adjusting Bolt.The Dead Band Adjustable Range in the table are the minimum adjustable range which can be guaranteed, thepractical range can be wider.