Home

LS-120 User`s Manual - J

1. both the UP and DOWN arrow buttons of the meter in for three seconds untill the word tunE appears and then let go 2 Press only the DOWN arrow button once and the word LEUL 1 will appear 3 Hold the star button in and at the same time press the UP arrow button once and the word LEUL 2 will appear 4 Press the UP button five times until the word SP2 A appears 5 Change from dV hi deviation high to dV Lo deviation low by holding the star button in and at the same time press the UP arrow button once and the word dV Lo appears 6 Change from Latch and Hold Lt ho to Nonlatching nonE Press only the UP button once more and the word SP2 b appears Hold the star button in and at the same time press the DOWN arrow button until the word nonE appears 7 Return to normal operation by pressing both the UP and DOWN arrow buttons in and hold for three seconds until the display goes back to displaying the current temperature
2. the s key to increase or the t key to decrease the set point The set point can be seen at anytime by holding in the key The set point appears as a blinking number in the display 3 Enter the minimum coolant flow rate by a Place the flow sensing head on the outlet line of the condenser or whatever piece of equipment the flow rate is to be monitored in Note the direction of flow printed on the side of the sensing head b Set the flow rate programming selector to the Set position c Adjust the flow rate of the coolant through the sensor to the minimum acceptable flow rate d Turn the flow rate programming selector knob to RUN and the green LED OK should turn on This establishes the current flow rate going through the sensing head as the minimum acceptable flow rate e Increase the flow rate of the coolant to the desired level Note the flow rate should be increased some amount above the flow set in Step D so that a small change in flow rate doesn t falsely trigger the monitor 4 If the heater or monitored instrument has a power switch turn it on now Power is applied to the instrument power outlet on the front of the Lab Safety Controller as long as the flow of liquid going through the flow sensor stays above the level established in Step 3 and the temperature of the reaction stays below the limit temperature entered in Step 2 If flow falls below the entered level or the temperature rises above t
3. IRECTLY AFFECTED BY SUCH BREACH Service J KEM Scientific maintains its own service facility and technical staff to service all parts of the controller usually in 24 hours For service contact J KEM Scientific Inc 6970 Olive Boulevard St Louis MO 63130 314 863 5536 FAX 314 863 6070 Web site http www jkem com E Mail jkem911 jkem com This manual contains parameters specific to temperature controller Serial When calling with a technical question please have the controller s serial number available Lab Safety Controller Operating Instructions J KEM s Lab Safety Controller LS 120 combines both an over temperature limit controller and a coolant flow monitor in the same instrument When in operation the LS 120 allows the user to monitor and control power to an attached instrument normally a heater As long as the temperature of the attached instrument says below an over temperature limit entered by the user power is applied to the instrument If the temperature exceeds the over temperature limit power is removed from the attached instrument until the LS 120 is manually reset In addition to entering an over temperature limit the LS 120 can optionally monitor the flow rate of coolant typically water through a condenser or other device If the flow rate of water falls below a user set value power is also removed from the heater until being manually reset Thermocouple Flow rate programming l sensed t
4. Temperature Control for Research and Industry LS 120 Lab Safety Controller User s Manual KEM Scientific Inc 6 6 Instruments for Science from Scientists Warranty J KEM Scientific Inc warrants this unit to be free of defects in materials and workmanship and to give satisfactory service for a period of 12 months from date of purchase If the unit should malfunction it must be returned to the factory for evaluation If the unit is found to be defective upon examination by J KEM it will be repaired or replaced at no charge However this WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of being damaged as a result of excessive current heat moisture vibration corrosive materials or misuse Components which wear or are damaged by misuse are not warranted This includes contact points fuses and solid state relays THERE ARE NO WARRANTIES EXCEPT AS STATED HEREIN THERE ARE NO OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND OF FITNESS FOR A PARTICULAR PURPOSE IN NO EVENT SHALL J KEM SCIENTIFIC INC BE LIABLE FOR CONSEQUENTIAL INCIDENTAL OR SPECIAL DAMAGES THE BUYER S SOLE REMEDY FOR ANY BREACH OF THIS AGREEMENT BY J KEM SCIENTIFIC INC OR ANY BREACH OF ANY WARRANTY BY J KEM SCIENTIFIC INC SHALL NOT EXCEED THE PURCHASE PRICE PAID BY THE PURCHASER TO J KEM SCIENTIFIC INC FOR THE UNIT OR UNITS OF EQUIPMENT D
5. ate d Turn the flow rate programming selector knob to RUN and the green LED OK should turn on This establishes the current flow rate going through the sensing head as the minimum acceptable flow rate e Increase the flow rate of the coolant to the desired level Note the flow rate should be increased some amount above the flow set in Step D so that a small change in flow rate doesn t falsely trigger the monitor If the heater or monitored instrument has a power switch turn iton now Power is applied to the instrument power outlet on the front of the Lab Safety Controller as long as the flow of liquid going through the flow sensor stays above the level established in Step 3 If flow falls below the entered level power is permanently disconnected from the instrument power outlet To reset the controller from an alarm state the controller must be turned off and then back on Change between Latching Nonlatching and Deviation High Low This controller is initially configured as an Over Temperature Limit deviation high That means the controller turns power ON when below the entered temperature and OFF when above it The controller also has a Latching feature which requires that the power switch be turned off for three seconds and back on again to reset The controller will turn OFF power permanently the first time the reaction reaches the entered temperature To change the configuration of the controller 1 Press and hold
6. emperature selector Mode selection switch KEM Scientific O wow struments for Science from Scientists J KEM Scientific Inc St Louis Missouri USA Protected by U S Patent 5006695 Temp Only Temp amp Flow 120 vac 50 60 Hz Lab Safety Controller 15 amps 1800 watts 120 Vac 1200 Wa ts Thermocouple input Flow monitor connector Instrument power outlet The Lab Safety Controller can be used to monitor just temperature just coolant flow rate or both The setup procedure for each of these modes is listed below Any piece of equipment can be plugged into the power receptacle of the Lab Safety Controller as long as it draws less than 15 amps 120 volts 1800 watts Setup for Monitoring Reaction Temperature and Coolant Flow Rate 1 Setup the controller by a Turn power to the lab safety controller on b Connect the flow meter to the flow monitor connector on the back of the controller c Set the mode selection switch on the back of the controller to Temp amp flow d Plug a thermocouple into the thermocouple input and place the thermocouple at the point in the reactor where you want to measure the temperature of the process e Plug the heater or monitored instrument into the instrument power outlet on the front of the controller 2 Enter the over temperature limit into the digital meter To enter a set point i e the desired temperature Hold in the button and simultaneously press
7. he limit temperature power is permanently disconnected from the instrument power outlet To reset the controller from an alarm state the controller must be turned off and then back on Setup for Monitoring Reaction Temperature Only I Setup the controller by a Turn power to the lab safety controller on b Set the mode selection switch on the back of the controller to Temp only position d Plug a thermocouple into the thermocouple input and place the thermocouple at the point in the reactor where you want to measure the temperature of the process e Plug the heater or monitored instrument into the instrument power outlet on the front of the controller Enter the over temperature limit into the digital meter To enter a set point i e the desired temperature Hold in the button and simultaneously press the s key to increase or the t key to decrease the set point The set point can be seen at anytime by holding in the key The set point appears as a blinking number in the display If the heater or monitored instrument has a power switch turn iton now Power is applied to the instrument power outlet on the front of the Lab Safety Controller as long as the temperature of the reaction stays below the limit temperature entered in Step 2 If the temperature rises above the limit temperature power is permanently disconnected from the instrument power outlet To reset the controller from an alarm sta
8. te the controller must be turned off and then back on Setup for Monitoring Coolant Flow Rate Only 1 Setup the controller by a Turn power to the lab safety controller on b Connect the flow meter to the flow monitor connector on the back of the controller c Set the mode selection switch on the back of the controller to Temp amp flow d A thermocouple must be connected to the thermocouple input but it can be left sitting at room temperature and does not need to be connected to the reaction e Plug the heater or monitored instrument into the instrument power outlet on the front of the controller Enter a high over temperature limit into the digital meter this will effectively inactivate the limit temperature controller To enter a set point i e the desired temperature Hold in the button and simultaneously press the s key to increase or the t key to decrease the set point The set point can be seen at anytime by holding in the key The set point appears as a blinking number in the display Enter the minimum coolant flow rate by a Place the flow sensing head on the outlet line of the condenser or whatever piece of equipment the flow rate is to be monitored in Note the direction of flow printed on the side of the sensing head b Set the flow rate programming selector to the Set position c Adjust the flow rate of the coolant through the sensor to the minimum acceptable flow r

LS-120 User`s Manual - J

Contents

Download Pdf Manuals

Related Search

Related Contents