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JENCO 6312 DT - User Manual

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OPERATION MANUAL
JENCO MODEL 6312 DT
MICROCOMPUTER BASED
DO/ Temperature
TRANSMITTER & CONTROLLER
JENCO INSTRUMENTS, INC. JENCO ELECTRONICS, LTD.
7968 ARJONS DR., SUITE C P.O. BOX 161-178, ZhongXiao
SAN DIEGO, CA 92126 NanGang,TaiPei, TAIWAN
TEL: (858) 578-2828 TEL: (886-2) 2782-3226
FAX: (858) 578-2886 FAX: (886-2) 2782-3234
E-MAIL:jencosales@jencoi.com E-MAIL:jencoe@ms2.hinet.net
SHANGHAI JENCO ELECTRONICS, LTD.
18 Wangdong zhong Road,Sijing Town,Songjiang,Shanghai,CHINA.
TEL: 86-21-5761-9599
FAX: 86-21-5761-9598
E-MAIL: jencos@jenco.com.cn
Web site:www.jencoi.com ; www.jenco.com.cn

Questions and Answers

  • J
    janetmatthewsAug 2, 2025
    What to do if my JENCO Computer Hardware shows '*OUT OF RANGE*' error?
    • J
      jwaltonAug 3, 2025
      If your JENCO Computer Hardware displays '*OUT OF RANGE*', it indicates that the reading is higher than 5% (or equivalent in ppm/ppb) or lower than 0%, the raw probe input current is higher than 30% or less than –30% of typical input, or the new user value is higher or lower than 20% of the current reading. To resolve this, correct the calibration solution.
  • W
    williejohnsonAug 6, 2025
    What to do if my JENCO 6312 DT Computer Hardware shows 'EEPROM: BAD'?
    • R
      randymillsAug 7, 2025
      If your JENCO Computer Hardware displays 'EEPROM: BAD', it means the unit has failed its EEPROM test. Try turning the instrument OFF and then back ON again. If the problem persists, the unit may need to be returned for service according to the warranty.
  • A
    Amanda HancockAug 11, 2025
    What to do if my JENCO Computer Hardware shows 'RAM : BAD'?
    • T
      Tommy PattersonAug 11, 2025
      If your JENCO Computer Hardware displays 'RAM : BAD', it indicates that the unit has failed its RAM test. Try turning the instrument OFF and back ON again. If the issue continues, return the unit for service (see X.Warranty).
  • A
    Andrea GardnerAug 15, 2025
    What to do if my JENCO 6312 DT Computer Hardware shows 'ROM : BAD'?
    • J
      Jody SaundersAug 15, 2025
      If your JENCO Computer Hardware displays 'ROM : BAD', it means the unit has failed its ROM test. You should turn the instrument OFF and then back ON again. If the problem continues, return the unit for service (see X.Warranty).
  • B
    Becky ContrerasAug 19, 2025
    What to do if my JENCO 6312 DT Computer Hardware displays '*CAL ERROR*'?
    • J
      Jonathan RogersAug 19, 2025
      If your JENCO Computer Hardware displays '*CAL ERROR*', go back to ZERO CAL and skip it by pressing the DOWN key.
  • D
    Devin McdowellAug 25, 2025
    Why does my JENCO 6312 DT Computer Hardware display "UNDR"?
    • P
      Patricia CaseAug 25, 2025
      If your JENCO Computer Hardware displays "UNDR", it indicates that the temperature is greater than 120.0°C. Bring the solution to a lower temperature.
  • R
    Rachel MannAug 28, 2025
    Why does my JENCO Computer Hardware display "OVER"?
    • E
      Emily ThomasAug 28, 2025
      If your JENCO Computer Hardware displays "OVER", it means the temperature is less than -10.0°C. Bring the buffer/solution to a higher temperature.

Summary

Initial Inspection and Assembly

Mounting Procedure

Instructions for physically installing the instrument onto a panel, including cutout dimensions.

Cleaning the Instrument

Guidelines for safely cleaning the instrument using a lint-free cloth and water or neutral detergent.

General Introduction to Jenco Model 6312 DT

Using the Jenco Model 6312 DT

Front Panel Controls

Details the function of each key on the front panel for operation and navigation.

Normal Mode Display Overview

Rear Panel Connectors and Wiring

Instrument Power On and Off

Jenco Model 6312 DT Operating Modes

Main Display Mode

Describes the primary display screen showing temperature and dissolved oxygen measurements.

Calibration and Setting Modes

Explains how to access and navigate the calibration and setting menus.

Key Operation Guide

Password and User Setting Screens

Password Check Page

Details the password entry screen required for accessing settings and calibration.

User Setting Warning Page

Explains the warning displayed when the unit is not password locked, indicating frozen outputs.

Dissolved Oxygen Calibration

Standard Dissolved Oxygen Calibration Steps

Product Dissolved Oxygen Calibration Steps

DO Control Setting Configuration

Temperature Control Setting

DO Current Output Settings

Explains how to set the 4-20mA output values for Dissolved Oxygen measurements.

Temperature Current Output Settings

Explains how to set the 4-20mA output values for Temperature measurements.

Temperature Control Relay Settings

Describes how to configure the temperature control relay action, set point, and hysteresis.

Relay Control Features

Relay Isolation Voltage

Specifies the maximum isolation voltage for relay output contacts.

Relay Output Load Limitations

Details the maximum current and voltage ratings for relay output loads.

Relay Action, Setpoint, and Hysteresis

Relay Action and Hysteresis Values

Explains how relay action (HIGH/LOW) and hysteresis affect switching points.

Dissolved Oxygen Relays

Discusses the three independent relay channels available for DO display.

Temperature Relay and Analog Output

Temperature Control Relay

Describes the single relay channel for temperature control and its settings.

Analog Output Isolation Voltage

Specifies the isolation voltage for the 4-20mA analog output.

Analog Output Load Impedance

Details the maximum load impedance allowed for the 4-20mA analog output.

Linear Current Output Configuration

RS485 Interface Operation

RS485 Interface Introduction

Introduces the RS485 interface and the prerequisites for data communication.

Preparing the Meter for RS485

Guides on connecting the meter via RS485 and preparing for computer communication.

Error Displays and Troubleshooting

Instrument Specifications

Warranty Information

Return of Items Procedure

Provides instructions and requirements for returning the product for service or repair.

JENCO 6312 DT Specifications

General IconGeneral
BrandJENCO
Model6312 DT
CategoryComputer Hardware
LanguageEnglish