Related Manuals for JENCO 3351
Summary of Contents for JENCO 3351
- Page 1 Operation Manual MODEL 3351 Microcomputer Based Conductivity/Resistivity Transmitter JENCO ELECTRONICS, LTD. MANUFACTURER OF PRECISION INSTRUMENTS...
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Page 2: Table Of Contents
CONTENTS GENERAL INTRODUCTION………………………………………..………....2 INITIAL INSPECTION……...………………..............2 USING THE JENCO MODEL 3351……..............3 A. Mounting procedure..................3 B. Front panel....................5 C. LCD screen....................7 D. Rear connectors...................9 E. Measure mode.....................10 F. Setting mode....................11 G. RS485 Setting mode...................16 H. Conductivity/Resistivity calibration mode..........17 ERROR DISPLAY AND TROUBLESHOOTING……………..………......18 SPECIFICATIONS……………..………………………………………......20... -
Page 3: General Introduction
GENERAL INTRODUCTION Thank you for selecting the JENCO Model 3351. The 3351 Conductivity/Resistivity Transmitter is a rugged microprocessor based instrument assembled in a watertight 1/8 DIN case, designed for use in laboratories and process control applications. The system displays Conductivity / Resistivity or Temperature status in one large LCD screen. -
Page 4: Using The Jenco Model 3351
ERVIEW USING THE JENCO MODEL 3351 A. Mounting Procedure Make a cutout on any panel, with a thickness of 1/16 inch (1.5mm) to PANEL CUTOUT DI M ENSI ONS inch (9.5mm). Refer ± 0. 61 45. 0 0. 00 ±... - Page 5 Replace mounting bracket Panel M ount i ng br acket s assembly onto the controller and secure controller mounting panel. Refer DRAWING 3. DRAWING 3 【 Note 】 : If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.
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Page 6: Front Panel
B. Front Panel The front panel consists of a 4-digit LCD display and 4 keys. [ MODE ] key: 1a. In the Measure mode, this key will switch the display in sequence from Conductivity, Temperature and back to Conductivity again or from Resistivity, Temperature and back to Resistivity again. - Page 7 [ UP ] key: 2a. In the Calibration mode, pressing this key will increase the numeral increment. In the Setting mode, pressing this key will show the next possible option and increase the numeral increment. 2b. In the Measure mode, pressing this key and [ENTER] key at the same time, the unit will enter the Calibration mode.
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Page 8: Lcd Screen
the user to the next setting. C. LCD screen... - Page 9 Major LCD display. CAL – This icon will be displayed if the meter is in the Calibration/Setting mode. HI1 – This icon will be displayed if the meter is in the Setup Identification (ID). HI2 –This icon will be displayed if the meter is in the RS485 Communication Setup ℃...
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Page 10: Rear Connectors
Specify “L’ = “Live Lead” 100 to 230 VAC Volts and “N” = “Neutral Lead” Connect the AC line to the rear of the instrument. The model 3351 can be powered by 100~240V AC source at 50/60 HZ. Make sure the EARTH connector is... -
Page 11: Measure Mode
The metallic shield of the conductivity electrode must be connected to the "GND", otherwise the readings would be unstable. 【 Note 】 : (1) Make sure that the power is unplugged before wiring your probes etc. (2) Make sure you connect the AC power cord to the correct AC terminals. Incorrect connection may damage the unit permanently. -
Page 12: Setting Mode
Resistivity –Current resistivity of the solution. Temperature – Current temperature of the solution. 【 Note 】 : Pressing [MODE] key in the Measure mode will cycle the display between the two modes above. Setting mode Pressing [DOWN] key and [ENTER] key at the same time, the meter will enter into the Setting mode. - Page 13 Pressing [UP] key or [DOWN] key in this screen will cycle the display between 01 (Thermistor: 10k ohm), 02 (Manual) modes above. Select the preferred temperature compensation mode, press [ENTER] key to save, and enter the next setting screen. Temperature Coefficient select: Tem perat ure com pensat i on sel ect EN TER C AL...
- Page 14 Probe Basic cell constant select: Tem per at ur e coef f i ci ent sel ect ENTER ENTER ENTER ENTER Range sel ect Pressing [UP] key or [DOWN] key in this screen will cycle the display from C1.00, C0.10 to C0.01 basic cell constant above. Select the preferred basic cell constant, press [ENTER] key to save, and enter the next setting screen.
- Page 15 Range select: Pressing [UP] key or [DOWN] key in this screen will cycle the display from CF01/0.000~1.999uS/cm, CF02/0.00~19.99uS/cm, CF03/0.000~1.999MΩ, CF04/0.00~19.99MΩ(Basic cell K is C0.01) or CF01/0.00~19.99uS/cm, CF02/0.0~199.9uS/cm(Basic cell K is C0.10) or CF01/0.0~199.9uS/cm, CF02/0~1999uS/cm, CF03/0.00~19.99mS/cm (Basic cell K is C1.00) above. Select the preferred basic cell constant , press [ENTER] key to save, and enter the next setting screen.
- Page 16 C AL EN TER C AL C AL C AL EN TER EN TER EN TER I D m odel sel ect...
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Page 17: Rs485 Setting Mode
G. RS485 Setting mode A setup CD is included in the instrument package. After installation, it allows the user to communicate with the instrument by a computer through RS485 serial connection. It is recommended to use a standard shield twisted pair cable for optimum RS-485 communications. -
Page 18: Conductivity/Resistivity Calibration Mode
“Odd” and “Even”. Press [Enter] and return to the measurement interface. H. Conductivity/Resistivity Calibration mode The model 3351 uses 1-point calibration for conductivity or resistivity. In the Measure mode, pressing [UP] key and [ENTER] key at the same time to allow the meter to go to the Conductivity / Resistivity calibration mode. -
Page 19: Error Display And Troubleshooting
ERVIEW ERROR DISPLAY AND TROUBLESHOOTING Conductivity/ Temperature Display Possible cause(s) Resistivity Display Mode [Action(s)] Display "OvEr" -10.0~120.0°C Measure Reading is over the specified mode range. [Change range to higher level] “Undr” -10.0~120.0°C Measure Reading is under user specified mode range. [Change range to lower level] [Immerse the conductivity probe into standization solution.]... - Page 20 lower temperature.] [Replace temperature probe.] b. No temperature sensor. [Adjust the manual temperature to -10~120°C.] "OvEr" “Undr” Measure a. Temperature < -10.0°C. mode [Bring standization solution higher temperature.] [Replace temperature probe.] b. No temperature sensor. [Adjust the manual temperature to -10~120°C.]...
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Page 21: Specifications
SPECIFICATIONS Conductivity/Resistivity: Basic Cell K Range Resolution Accuracy 0.01 0.000~1.999uS/cm 0.001uS/cm ±0.5%FS ± 1 digit 0.00~19.99MΩ 0.01MΩ 0.01 0.00~19.99uS/cm 0.01uS/cm ±0.5%FS ± 1 digit 0.000~1.999MΩ 0.001MΩ 0.10 0.00~19.99uS/cm 0.01uS/cm ±0.5%FS ± 1 digit 0.10 0.0~199.9uS/cm 0.1uS/cm ±0.5%FS ± 1 digit 1.00 0.0~199.9uS/cm 0.1uS/cm... - Page 22 Conductivity/Resistivity: Cell Constant 0.01, 0.1, 1.0; 2 wire. Reference Temperature 25.0 °C, factory set. Temperature Coefficient 2.00 or 0.00%, user selectable. Temperature: Temperature sensor Thermistor: 10k ohm at 25 °C, (User selectable) Manual RS485 : Use MODBUS protocol to transmit data over RS-485 General: Power:...
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Page 23: 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 alone will determine if the product problem is due to deviations or customer misuse. - Page 24 A fee will be charged on all authorized returns. 【 Note 】 : Jenco reserves the right to make improvements in design, construction and appearance of our products without notice. Jenco Instruments, Inc. 7968 Arjons Drive, Suite C San Diego, CA 92126 TEL: 858-578-2828 FAX: 858-578-2886 E-Mail: jencoinfo@jencoi.com;...
- Page 25 Shanghai Jenco Instruments, Ltd. 18 Wang Dong Zhong Road Sijing Town, Songjiang Shanghai, China TEL: 86-021-5761-9599 FAX: 86-021-5761-9598 E-Mail: sales@jenco.com.cn Website: www.jenco.com.cn...
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