Orbisphere 3600 series User Manual (English)

Questions and Answers:

P
Patricia PowellAug 3, 2025
What to do if Orbisphere 3600 Measuring Instruments give unexpected or incorrect DO readings?
- S
  Shane WilliamsonAug 3, 2025
  If your Orbisphere Measuring Instruments show unexpected or incorrect dissolved oxygen readings, there might be a sample air leak. To check this, set the flow rate to 100 ml/min and wait until it stabilizes. Then, slowly increase it to 200 ml/min. If you notice a significant decrease in dissolved oxygen levels, it is likely that there is an air leak in the sample. Alternatively, high residual current may be the cause. Place the sensor in a deaerated sample, wait for a low reading, and check the concentration against the low measurement limit. If the concentration is significantly higher than the low limit, try servicing the sensor.
V
Veronica GutierrezAug 9, 2025
How to fix Orbisphere 3600 when it doesn't work with “moca3600” PC program?
- J
  Jason BrownAug 10, 2025
  To resolve the issue of an Orbisphere Measuring Instrument and the “moca3600” PC program not working together, first, ensure that the “Options/Serial Output” is enabled. Next, if you're using a 25-to-9 pin converter at the PC, verify that all 9 pins are available. Finally, check for any PC COM port or IRQ conflicts.
G
Gabriela WilsonAug 15, 2025
Why do Orbisphere 3600 display '0000' O levels?
- J
  Judy KrauseAug 16, 2025
  If your Orbisphere Measuring Instruments display '0000' for oxygen levels, it means that 'XXXX' is selected for the unit's lowest range. To fix this, go to the “Options/Display Units” menu and choose either 'X.XXX, XX.XX or XXX.X'.

Orbisphere 3600 series Specifications

General

Category	Measuring Instruments
Power Supply	100 - 240 VAC, 50/60 Hz
Enclosure Rating	IP65
Dissolved Oxygen Range	0 to 20 mg/L
Measurement Range (O2)	0 - 20 ppm, 0 - 2000 ppb, 0 - 20 mg/L, 0 - 600% saturation
Operating Temperature	0-50°C
Accuracy (O2)	±1% of reading
Response Time (H2)	<60 seconds
Outputs	4-20 mA

Summary

CE Conformity

Supplementary Safety Recommendations

Operating Instructions

1.1 What you have received

Details components included with the 3600 analyzer system.

1.2 System Pre-operation Checks

Outlines pre-operation checks for voltage, mounting, connections, and sensor.

1.3 Instrument Operation, Measurement, and Calibration

Explains instrument operation, measurement, and calibration procedures.

1.3.2 Oxygen Measurement

Covers performing oxygen measurements, range indication, and expected readings.

1.3.3 Calibration Procedures

Details procedures for calibrating internal pressure, O2 sensor, and external pressure sensors.

1.4 Modify Options and Settings

Covers configuring various instrument settings like units, alarms, outputs, and diagnostics.

1.4.1 Display Units

Allows selection of units for dissolved, partial pressure, or fraction oxygen measurements.

1.4.3 Alarm Outputs

Explains configuration of internal relays for alarm outputs.

1.4.4 Analog Outputs

Covers scaling analog output signals for O2 concentration.

1.4.8 Self Diagnostics

Routine to check system functionality and identify malfunctions.

1.5 Sensor Maintenance and Troubleshooting

Procedures for sensor maintenance, cleaning, replacement, and troubleshooting.

1.5.1 Sensor Service and Removal

Guides on when to service, and how to remove the sensor.

1.5.4-1.5.5 Chemical Cleaning

Details electrochemical, ammonia, and nitric acid cleaning procedures.

1.5.7 Replace Membrane

Step-by-step guide for replacing the sensor membrane.

1.5.10 Troubleshooting

Lists common problems and their solutions for the instrument and sensor.

1.6 Spare Parts and Diagrams

Lists spare parts and provides sensor/cap diagrams.

1.7 Data Acquisition Software

Information on using the moca3600 program for data acquisition.

1.7.1 Program Setup

Instructions for installing the moca3600 software on Windows.

1.7.4 Acquiring Data

Instructions on how to start and view data acquisition.

1.8 Warranty Information

Details the product warranty and terms.

Installation Guidelines

2.1 Indicating Instrument Installation

Covers panel, rack, and wall mount installation of the indicating instrument.

2.1.1 Panel or 19-inch Rack Mount Installation

Details mounting, power, and signal connections for panel/rack units.

2.1.2 Wall Mount Instrument Installation

Describes mounting, power, and signal connections for wall mount units.

2.1.3 Portable Instrument Installation

Covers installation of portable instruments, including power and connections.

2.1.4 Instrument Connectors

Identifies sensor, pressure, RS-232, recorder, and alarm connectors.

2.1.8 Instrument Servicing

Procedures for internal servicing and component replacement.

2.2 Sensor Installation

Covers mounting the oxygen sensor in various configurations.

2.2.1 Sensor Socket Installation

Details installing the sensor socket into pipes.

2.2.2 ProAcc Valve Installation

Describes using the ProAcc valve for sensor insertion/removal.

2.2.3 Flow Chamber Installation

Covers installation of the flow chamber for sample media.

2.2.4 Multiparameter Flow Chamber Installation

Details installing a flow chamber for multiple sensors.

2.2.5 External Pressure Sensor Installation

Describes installing the external pressure sensor.

Technical Information

3.1 System Specifications

Lists specifications for the indicating instrument and configurations.

3.2 Principle of Operation

Explains the operational principles of the oxygen sensor circuitry.

Appendices

Appendix 1-Table of Oxygen Concentrations (ppm)

Provides tables of oxygen concentrations at various temperatures and pressures.

Orbisphere 3600 series User Manual

Table of Contents