Related Manuals for JENCO 3331
Summary of Contents for JENCO 3331
- Page 1 Operation Manual MODEL 3331 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 3331……..............3 A. Mounting procedure..................3 B. Front panel....................5 C. LCD screen....................7 D. Rear connectors...................8 E. Measure mode.....................10 F. Setting mode....................11 G. Conductivity/Resistivity calibration mode..........18 H. 4~20mA output..................18 ERROR DISPLAY AND TROUBLESHOOTING……………..………......21 SPECIFICATIONS……………..………………………………………......23... -
Page 3: General Introduction
The model 3331 microprocessor performs a self-diagnostic routine every time you turn on the unit, it will provide you with basic information on the stability of the instrument. The model 3331 has an isolated 4-20mA analog output, offset and span configurable for the Conductivity or Resistivity display. -
Page 4: Using The Jenco Model 3331
USING THE JENCO MODEL 3331 ERVIEW A. Mounting Procedure PANEL CUTOUT DIMENSIONS ± 0.61 Make a cutout on any panel, with a 0.00 ± 0.024 0.000 thickness of 1/16 inch (1.5mm) to ± ± 0.813 0.032 92.0 3.622" 0.000 0.000 inch (9.5mm). - Page 5 controller into the cutout. Refer to DRAWING 2. Replace mounting bracket Panel Mounting brackets 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. 3331 COND TRANSMITTER [ 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 3 4 5 Major LCD display. CAL – This icon will be displayed if the meter is in the Calibration/Setting mode. mA – This icon, when displayed, indicates the meter is in the 4mA or 20mA Setting mode. -
Page 9: Rear Connectors
MΩ– Unit indicator. ℃ – Temperature and unit display. uS – Unit indicator. ATC –This icon will be displayed when a temperature probe is connected. MAN –This icon will be displayed if no temperature probe is not connected. mS – Unit indicator. D. - Page 10 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 3331 can be used with 100~240V AC at 50/60 HZ. Make sure the EARTH connector is connected to the earth lead of the AC power line.
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Page 11: Measure Mode
Measure mode Turning on the unit will always display the Measure mode. This instrument is designed to provide 2 distinct measurements: Conductivity, Temperature or Resistivity, Temperature. MODE MODE MODE MODE Conductivity – Current conductivity of the solution. Resistivity –Current resistivity of the solution. Temperature –... -
Page 12: Setting Mode
Setting mode Pressing [DOWN] key and [ENTER] key at the same time, the meter will enter into the Setting mode. Temperature compensation select: +ENTER ENTER ENTER Temperature coefficient select Pressing [UP] key or [DOWN] key in this screen will cycle the display between 01 (Thermistor: 10k ohm), 02 (Manual) modes above. - Page 13 Temperature Coefficient select: Temperature compensation select ENTER ENTER ENTER probe Basic cell constant select Pressing [UP] key or [DOWN] key in this screen will cycle the display between E2.00, E0.00 above. Select the preferred coefficient, press [ENTER] key to save, and enter the next setting screen.
- Page 14 Probe Basic cell constant select: Temperature coefficient select ENTER ENTER ENTER ENTER Range select 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 ENTER ENTER ENTER 4mA output setting ENTER ENTER ENTER ENTER 4mA output setting...
- Page 17 4 mA output setting: mA output parameters select ENTER ENTER 20mA output setting Pressing [UP] key or [DOWN] key in this screen to adjust the 4 mA value, this value is used for scaling the 4-20mA analog output. Pressing [ENTER] key to save, and enter the next setting screen.
- Page 18 20mA output setting: 4mA output setting ENTER ENTER Measure mode Pressing [UP] key or [DOWN] key in this screen to adjust the 20 mA value, this value is used for scaling the 4-20mA analog output. Pressing [ENTER] key to save, and goes to the Measure mode.
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Page 19: Conductivity/Resistivity Calibration Mode
G. Conductivity/Resistivity Calibration mode The model 3331 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 20 Output load: The maximum load is 500 ohm. Output current inaccuracies may occur for load impedance in excess 500 ohm. The analog output will produce a linear analog output. The user can only bind the ANALOG OUTPUT to one reading at a time. The user can change this anytime by changing option at the Calibration/Setting mode screen.
- Page 21 The above figure shows the relationship between Reading, U & U 20mA The analog output is based on the following equation: mA(output) = 4mA+(16mA)*(D – U ) / (U 20mA Where: mA(output) = analog output = current bound display = user setting for 4 mA for current bound display = user setting for 20 mA for current bound display 20mA...
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Page 22: Error Display And Troubleshooting
ERROR DISPLAY AND TROUBLESHOOTING ERVIEW 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 23 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 24: 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 25 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 4-20 mA output: Current output range 4 to 20 mA (isolated) Current output scale user programmable Maximum load...
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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 alone will determine if the product problem is due to deviations or customer misuse. - Page 27 For your protection, items must be carefully packed to prevent damage in shipment and insured against possible damage or loss. Jenco will not be responsible for damage resulting from careless or insufficient packing. A fee will be charged on all authorized returns.
- Page 28 Jenco Electronics, Ltd. 4F., NO. 80, Songde Rd., Xinyi Dist., Taipei City 110, Taiwan TEL: 886-2-2345-6188 FAX: 886-2-2345-6791 E-Mail: sales@jenco.com.tw Website: www.jenco.com.tw 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...
- Page 29 使用说明书(英) 机型 文件名称 3331 汪蕾 文件编号 编制人 编制日期 3331-E-02 2013-03-22 核准人 核准日期 版本号 *2013-3-22修改电导率及电阻率的测量量程。...
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