Related Manuals for JENCO 6308PT
Summary of Contents for JENCO 6308PT
- Page 1 OPERATION MANUAL JENCO MODEL 6308PT MICROCOMPUTER BASED pH/ Temperature CONTROLLER JENCO ELECTRONICS, LTD. MANUFACTURER OF PRECISION INSTRUMENTS...
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Page 2: Table Of Contents
CONTENTS Page GENERAL INTRODUCTION II. INITIAL INSPECTION and ASSEMBLY MOUNTING PROCEDURES III.USING THE JENCO MODEL 6308 PT A. FRONT(KEYPAD) PANEL B. MAIN DISPLAY MODE C. REAR CONNECTORS D. TURNING ON/OFF THE INSTRUMENT MODEL 6308 PDT MODES A. MAIN DISPLAY MODE B. -
Page 3: General Introduction
I. GENERAL INTRODUCTION The Jenco Model 6308PT (pH and Temperature) System is a rugged microprocessor based instrument assembled in a watertight ¼ DIN case, designed for use in laboratories and process control applications. The model 6308PT microprocessor allows the user to easily recalibrate the parameters for the probes. -
Page 4: Mounting Procedures
II. INITIAL INSPECTION Carefully unpack the instrument and accessories. Inspect for damages made in shipment. If any damage is found, notify your Jenco representative immediately. All packing materials should be saved until satisfactory operation is confirmed. MOUNTING PROCEDURE 1. Make a cutout on any panel, with a thickness of 1/16 in. -
Page 5: Iii.using The Jenco Model 6308 Pt
III. USING THE JENCO MODEL 6308 PT A. FRONT PANEL 1. The [MODE / -- ] key. 1a. In Main Display mode this key has no function. 1b. In Calibration/Setting mode this key will move to the next digit of the current active parameter. -
Page 6: Main Display Mode
During Calibration/Setting mode this key will increment the current blinking digit of the active parameter. " 4. The [ ] DOWN key. 4a. During Calibration/Setting mode this key will decrement the blinking digit of the active parameter. 4b. During pH calibration, instead of SAVING the new pH Stand or Slope you can press this key to recalibrate the buffer again. -
Page 7: Rear Connectors
AC power supply. 1. Connect the AC line to the rear of the instrument. The model 6308PT can be used with 115 or 230VAC 50/60 Hz. Power consumption is 6 watt. Make sure the EARTH connector is... - Page 8 2. Connect the proper load to the output relays. Make sure that the load does not exceed the relay rating, 5 Amp at 115VAC and 2.5 Amp at 230 VAC. 3. Set the proper load to the 4-20mA output connector. Make sure that the load impedance is less than 500 Ohms.
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Page 9: Turning On/Off The Instrument
D. TURNING ON/OFF THE INSTRUMENT By just plugging the unit to a correct AC voltage the unit will be ready for use. There is no Power key so unplugging and plugging the unit will turn OFF or turn ON the unit respectively. After the unit is turned on, it will perform some... -
Page 10: Model 6308 Pdt Modes
IV. MODEL 6308 PT MODES A. MAIN DISPLAY MODE Turning ON the unit will always start in main display mode. This instrument is designed to provide 2 distinct measurements: 1. Temperature - current temperature of the solution. 2. pH - the current degree of acidity or alkalinity of the solution with automatic temperature compensation. -
Page 11: Calibration/Setting Mode
B. CALIBRATION/SETTING MODE Pressing the [CAL/VIEW] key for about 2 seconds during main display mode will bring-up the first page of 6 pages of the Calibration/Setting mode. Pressing [CAL/VIEW] key will switch to the next page until the last page, where pressing [CAL/VIEW] again will return the user to main display mode. -
Page 12: Check Password Page
a. CHECK PASSWORD page You will only see this page if the unit is password locked. To change any settings or calibration you need to unlock the system to remove the “PASSWORD LOCKED” message. You need to enter the correct 4-digit number on the “ENTER PASSWORD”... -
Page 13: Ph Calibration Page
c. pH CALIBRATION page ATC TEMP. – the current temperature of the solution. 1. BUFFER 1 - in this option you can select which buffer to use for the standardization calibration. You can choose 7.00 pH or 6.86 " pH by using the [ ] and [ ] keys ↵... - Page 14 the display. Once the display is halted changing the input or temperature will not change the “STAND” pH display. If there are ↵ no problems a flashing “SAVE” will be displayed. Pressing the [ ENTER key will save the new OFFSET of the pH probe or pressing "...
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Page 15: Ph Control Setting Page
We recommend that you use a new electrode, If the electrode efficiency is lower than 80%. d. pH CONTROL SETTING page HI RELAY 1 - The action for this relay is fixed to HIGH. In HI- action the relay will turn ON if the pH is greater or equal to RELAY 1 value, which is modified by the hysteresis value and hysteresis... -
Page 16: Current Setting Page
↵ [MODE/--] key to select another digit and the [ ] key to save the new value. 5. HYSTERESIS (mode) -this is the hysteresis mode for pH RELAY 1 to RELAY 4. You can choose CENTER” or “EDGE”. (See chapter V. CONTROLLING THE RELAYS.) 6. -
Page 17: Controlling The Relays
CONTROLLING THE RELAYS .) 5. RS 485 ID – this is the unique ID/Address for the unit. If you are connecting multiple model 6308PT or other Jenco models for logging purposes then this ID/Address must be unique for each connected unit. This ID/Address is the same address that must be used by the PC program to communicate with this unit. -
Page 18: Output Load
B. OUTPUT LOAD The current through the relay output contacts should not exceed 5 Amp at 115 VAC and 2.5 Amp at 230 VAC in order not to cause permanent damage to the relay contacts. This rating is specified for resistive loads only. -
Page 19: 4-20 Ma Output
There are four independent Alarm channels display. (see figure 1.). The hysteresis mode (center or edge, see figure 1.) and hysteresis value will be used by both pH relays. The action of the relays is dependent on set point, relay action type (HIGH or LOW), hysteresis... -
Page 20: Ph Linear Output
The analog output will produce a linear analog output if the user selects this option (see figure 2). The analog output will be dependent on the pH_4 mA setting, pH_20 mA setting and the current pH display. The pH LINEAR analog output is based on the following equation : = 4mA+(16mA)*(D - pH(4) ) / (pH(20) - pH(4)) (pH) -
Page 21: Rs485 Interface Operation
will be dependent on the pH _4 mA setting, pH _20 mA setting and the current pH display. The pH ANTILOG analog output is based on the following equation : = 4mA + (16mA) * (10^ - 10^ ) / (10^ D(pH) pH(4) pH(20) -
Page 22: Preparing The Meter
Read the file "6308PT.TXT" in the accompanying disk to jump-start you in using the meter with your RS485 enabled PC. VIII. ERROR DISPLAYS AND TROUBLESHOOTING... -
Page 23: Ph Buffers
"UNDR" 0.0 ~ 60.0°C a.pH-Cal-STAND a. Offset @ 7.00pH: mV<-100mV Offset@6.86pH:mV< -91.7 mV b.pH-Cal-SLOPE b. New Slope<ideal slope by [Use a new buffer solution.] [Replace electrode.] "UNDR" -10.0~ pH<-2.00 120.0°C [Under Range or Recalibrate.] EEPROM: During power-on Unit has failed its EEPROM test. [Turn instrument OFF and back to ON again.] [Return for service. -
Page 24: Specifications
4.00 6.86 9.18 4.01 7.00 10.01 4.01 6.85 9.14 4.01 6.98 9.97 4.02 6.84 9.10 4.02 6.98 9.93 4.03 6.84 9.07 4.03 6.97 9.89 4.04 6.83 9.04 4.04 6.97 9.86 4.06 6.83 9.02 4.06 6.97 9.83 4.07 6.83 8.99 4.08 6.97 9.80 4.09... - Page 25 Calibration point sensing Temperature Temperature sensor Thermistor, 10.00k Ω at 25°C 4-20mA Output Current output type Linear or LOG(user programmable) Current output range 4 to 20 mA (isolated) Current output scale user programmable Maximum load Ω Accuracy ± 0.02mA Isolation voltage 500VDC Controller Control type...
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Page 26: Warranty
If you purchased the item from our Jenco distributors and it is under warranty, please contact them to notify us of the situation. Jenco Service Department will determine whether the product problem is due to defects or customer misuse.
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