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Chemtrac UV254 Monitor 

– UVM5000 v 2.1 

 

Chemtrac, Inc.  

 

17 

 

8.2 

Using Known Water Method 

Carry out these steps: 

1.  Press the Zero button on the monitor.  The Calibration menu appears. 

2. 

Scroll down to ‘Custom Zero’ using the down arrow button.  Press Enter. 

 

 

3.  A default v

alue is displayed in the ‘New UVT:’ field (in this example, 75.0). 

4.  Press the up arrow to increase the number above 75.0 or the down arrow to decrease the number 

below 75.0.  When you have keyed in the number of known water transparency, press Enter. 

 

 

Note that if you only know your UVA value then this can be converted to UVT using the formula: 

UVT = 100 * 10

(-UVA)

 

 

5.  The monitor is now calibrated to the correct value. 

 

 

Содержание Auto Clean UV254

Страница 1: ......

Страница 2: ...Chemtrac UV254 Monitor UVM5000 v 2 1 Chemtrac Inc 1 Chemtrac Inc 1555 Oakbrook Dr Suite 100 Norcross GA 30093 770 449 6233 chemtrac chemtrac com...

Страница 3: ...Connections ___________________________________________________________ 14 5 8 4 20 Ma Connections and Dry Contacts______________________________________________ 14 6 Start up _______________________...

Страница 4: ...________________________________ 37 16 Parts _____________________________________________________________________________ 38 17 Cabinet Dimensions and Clearance ______________________________________...

Страница 5: ...amount of light able to pass through two different path lengths of test water From these two measurements alone the UV transmittance UVT or UV absorbance UVA of the test water is calculated without co...

Страница 6: ...Contact Chemtrac for replacement parts 2 Ensure that all responsible personnel carefully read this manual before installing or servicing this analyzer 3 This analyzer contains a UV lamp which emits li...

Страница 7: ...acklit LCD Indicator light for system alarms and warnings ALARMS Operator configurable alarms for high and low set points low lamp output leak detected system fault etc HUMIDITY CONTROL Humidity senso...

Страница 8: ...ll support up to 50lbs per component 6 Sufficient space and clearance to access and service the system Refer to drawings in mounting section to ensure appropriate location is selected Minimal distance...

Страница 9: ...e the UVM5000 enclosure 10 mm x 20 mm Quartz Flow Cell packed inside the UVM5000 enclosure 1L Calibration Bottle with Flex Tubing 24 VDC Power Adapter and Cable packed inside the UVM5000 enclosure Deh...

Страница 10: ...middle region of the flow cell where the light beam passes through Wearing gloves is recommended 2 Insert the flow cell into position under the flow cell header as shown below in Figure 5 4 Align the...

Страница 11: ...t until you feel it click into place Figure 5 8 3 Press the top and bottom hold down clamps against the connector to anchor it into position red arrows in Figure 5 8 4 Attach the other end of the ribb...

Страница 12: ...5 5 Plumbing Process water from a pressurized pipe flows into the monitor via a push to connect fitting The sample is analyzed by the sensor inside the cabinet and discharged to drain as shown in Figu...

Страница 13: ...g from the process to the IN push connector on the monitor 2 Connect another piece of tubing to the OUT port on the monitor and divert the line to the drain IMPORTANT The test water must be allowed to...

Страница 14: ...surement This results in a measurement of organics material independent of turbidity and particulate in the water The same results can also be achieved by removing light blocking particulate from the...

Страница 15: ...tem failure alarms Dry contact connections are from terminals 5 6 The 4 20 mA output connections are from negative terminal 3 and positive terminal 4 Dual Feed Connection For the dual feed option a se...

Страница 16: ...ing through the flow cell and no water droplets are on the inside of the monitor 4 Plug in the power supply Display screen will read Initializing 5 Calibrate your Analyzer Measurements are not assumed...

Страница 17: ...tubing at the inlet connection on the monitor 5 Fill the supplied wash bottle with DI RO water and connect the bottle tubing to the inlet connection on the monitor 6 Hold a finger over the small vent...

Страница 18: ...Press Enter 3 A default value is displayed in the New UVT field in this example 75 0 4 Press the up arrow to increase the number above 75 0 or the down arrow to decrease the number below 75 0 When yo...

Страница 19: ...r scaling Default 100 4mA UVA Press Enter then up down to select 4mA UVA reading for scaling Default 0 20mA UVA Press Enter then up down to select 20mA UVA reading for scaling Default 1 4mA Crltn Pres...

Страница 20: ...ating arm Default 1 On REF POSITION Factory settings Steps Press Enter then up down to change motor alignment increasing the adjusts the position clockwise RS 232 DATA LOG Setup Baud Rate 9600 Fixed p...

Страница 21: ...tus 0 no alarm 1 alarm Clean Fluid Low Alarm status 0 no alarm 1 alarm System Fault Alarm status 0 no alarm 1 alarm SET ALARMS See Dry Contact 0 Disabled 1 Alarm Humidity Press Enter then up down to s...

Страница 22: ...r then up down to select 0 to disable or 1 to enable Default 0 Idle Time Press Enter then up down to select number of minutes to wait while switching between sample lines Default 2 Cycle Time Press En...

Страница 23: ...ty The 4 20 mA can be set to produce a user selectable UVT or UVA value for the low 4 mA and a separate value for high 20 mA up to 110 UVT Figure 10 1 below is an example of a 4 20 mA setup for a cust...

Страница 24: ...communication protocol for RS232 is ASCII An example of one data stack is shown here based on the use of optional turbidity compensation The order of the data stack in ASCII from left to right is UVT...

Страница 25: ...he data stack in ASCII from left to right is UVT 1 UVT 2 Removal Lamp 1 Water 1 VIS 1 Lamp 2 Water 2 VIS 2 Temperature Humidity Status Table 6 itemizes each parameter and its corresponding value Witho...

Страница 26: ...Lab Value 4 The relationship between the UVA value and the desired water quality parameter can then be determined using the formula on the right 5 Alternatively the slope can be determined via multip...

Страница 27: ...to an hour to properly dry the air inside the monitor Each time the door to the cabinet is opened this drying process starts over so it is recommended to keep the cabinet door closed as much as possi...

Страница 28: ...as a starting point upon installation Wastewater 4 24 hour frequency Source Water 1 7 day frequency High Purity 2 4 week frequency Once in operation observe the flow cell for signs of fouling prior to...

Страница 29: ...Acid 30 solution Rust Off Hagasen Blue Removes lime calcium rust and color staining Citric Acid 20 solution Removes mineral scaling Sodium Hypochlorite 6 solution Removes oil grease and biofilm Acetic...

Страница 30: ...monitor 6 Once the fluid starts to flow remove finger from the vent hole and place bottle on top of the monitor as shown in Figure 14 6 The fluid should continue to flow through the monitor If it stop...

Страница 31: ...ecause some water may still be in the cell Slowly lift the blue lever of the quartz flow cell clamp pictured in Figure 14 7 on the right 4 Grip the quartz flow cell with two fingers at the top and car...

Страница 32: ...To replace the UV lamp follow these steps 1 Unplug the monitor from the power supply 2 Shut off the water flow 3 Drain the flow cell by disconnecting the tubing from the external push in fittings on...

Страница 33: ...14 Check for leaks If a leak occurs immediately shut off the water supply and drain the flow cell and then reinstall it 15 Power the monitor 16 Close the door and watch the Secondary Data entry in th...

Страница 34: ...rom time to time Chemtrac recommends replacing the blue ribbon cable every 12 18 months as preemptive maintenance The replacement is a very simple procedure requiring no tools 1 Unclip the end connect...

Страница 35: ...circuit board If blown replace with 20mm x 5mm 1 1 0 0 Bad reference position check Check reference microswitch on motor bracket If damaged it may need to be replaced Check set screw attaching rotati...

Страница 36: ...e door especially after shipping Lamp High The lamp output is too high and is out of range of the sensor If a new lamp has been installed it may be necessary to adjust the internal gain of the sensor...

Страница 37: ...ator setpoint Flow cell is dirty and needs to be cleaned OR a grab sample should be obtained and compared to the sample water to confirm measurement 15 3 Secondary Data The Secondary Data menu gives r...

Страница 38: ...numbers are dependent on the absorbance of the sample water stream CONDITION VALUE ISSUE ACTION Lamp values within range Less than 100 Sample is close to the bottom of the measurement range OR flow c...

Страница 39: ...0 Calibration Bottle Plastic Calibration Bottle for UV254 analyzers 25155 Standard Power Supply 24 VDC Power adapter and cable for UV254 analyzers 25170 NEMA 4 IP65 Power Supply 1 6A NEMA 4 IP65 rated...

Страница 40: ...imensions and Clearance The front side and back views of the cabinet are shown below to the nearest 1 8 inch The back view gives the dimensions relevant for spacing of screws to mount the cabinet Allo...

Страница 41: ...lure caused by 1 Improper installation operation or maintenance of equipment 2 Abnormal wear and tear on moving parts caused by some processes 3 Acts of nature i e lightning etc This warranty represen...

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