JENCO 3351 Manuale utente
Operation Manual
MODEL 3351
Microcomputer Based Conductivity/Resistivity Transmitter
JENCO ELECTRONICS, LTD.
MANUFACTURER OF PRECISION INSTRUMENTS
1
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
WARRANTY……………..………...............................................................................22
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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.
The model 3351 microprocessor performs a self-diagnostic routine every time the
user resets the unit, After device resets, it will provide the user with basic information
on the stability of the instrument.
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.
INITIAL INSPECTION
Carefully unpack the unit 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.
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USING THE JENCO MODEL 3351 ERVIEW
A. Mounting Procedure
PANEL CUTOUT DIM ENSIONS
45.0
1.772"
92.0 3.622"
0.813 0.032
0.61
0.024
0.00
0.000
0.000 0.000
±±
±
±
DRAWING 1
1. Make a cutout on any panel, with a
thickness of 1/16 inch (1.5mm) to
3/8 inch (9.5mm). Refer to
DRAWING 1.
DRAWING 2
2. Remove the mounting assembly
from the controller and insert the
controller into the cutout. Refer to
DRAWING 2.
M ounting Brackets
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Panel M ounting brackets
DRAWING 3
3. Replace the mounting bracket
assembly onto the controller and
secure the controller to the
mounting panel. Refer to
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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B. Front Panel
The front panel consists of a 4-digit LCD display and 4 keys.
1. [ 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.
1b. In the Calibration/Setting mode, pressing this key for three seconds will
move you back to the previous parameter in the case when recalibration / resetting
is required.
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2. [ 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.
3. [ DOWN ] key:
3a. In the Calibration mode, pressing this key will decrease the numeral
increment. In the Setting mode, pressing this key will show the next possible
option and decrease the numeral increment.
3b. In the Measure mode, pressing this key and [ENTER] key at the same time,
the unit will enter the Setting mode.
4. [ ENTER ] key:
In any mode where the user can change the settings, pressing this key will save
the new settings. If no change has been made then pressing this key will just lead
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the user to the next setting.
C. LCD screen
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1. Major LCD display.
2. CAL – This icon will be displayed if the meter is in the Calibration/Setting mode.
3. HI1 – This icon will be displayed if the meter is in the Setup Identification (ID).
4. HI2 –This icon will be displayed if the meter is in the RS485 Communication
Setup
5. ℃–Temperature and unit display.
6. uS – Unit indicator.
7. ATC –This icon will be displayed when a temperature probe is connected.
8. MAN –This icon will be displayed if the no temperature probe is not connected.
9. mS – Unit indicator.
10. MΩ–Unit indicator.
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D. Rear connectors
*Specify “L’ = “Live Lead” 100 to 230 VAC Volts and “N” = “Neutral Lead”
1. 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
connected to the earth lead of the AC power line.
Indice
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