Key facts
- Brand
- OHAUS
- Model
- Defender™ 3000
- Documents
- 13
- Languages
- ZH · EN
- Last added
- 2026-09-28
Start here
Ohaus Defender 3000 Quick Start Guide
The document serves as a Quick Start Guide for the Ohaus Defender™ 3000 electronic balance. It outlines essential safety precautions regarding power connection and environmental conditions before operation begins.
The guide details how to navigate the device's menu system using specific button combinations (Yes, No, Back, Exit) and explains primary functions such as turning the unit on/off, zeroing, taring, and changing units of measure. It also describes advanced application modes including parts counting, average piece weight calculation, check mode for target weight comparison, and totalization.
Ohaus Defender™ 3000 specifications
| Ambient Temperature | -10°C to +40°C |
|---|---|
| Relative Humidity | 10% to 90% non-condensing |
| Maximum Displayed Resolution | 1:20,000 |
| Display Type | 6-digit, 7-segment backlit LCD |
| Load Cell Excitation Voltage | 5V DC |
| Operating Temperature Range | -10°C to 40°C |
Source: Ohaus Defender 3000 Series T31P/T31XW Indicator Instruction Manual
All Ohaus Defender™ 3000 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
- Ohaus Defender 3000 Electronic Bench Scale User Manual 40 p
- Ohaus Defender 3000 Series T31P/T31XW Indicator Instruction Manual 53 p
- Ohaus Defender 3000 Series Base Instruction Manual 8 p
- Ohaus Defender 3000 Series Base Instruction Manual 8 p
- Ohaus Defender 3000 Series Base Instruction Manual 6 p
- Ohaus DEFENDER 3000 Series Drum Scale Instruction Manual 28 p
- Ohaus Defender 3000 Series Base Instruction Manual 8 p
- OHAUS Defender 3000 Indicators Instruction Manual 58 p
- Ohaus Defender 3000 Series Base Instruction Manual 8 p
- Ohaus Defender 3000 Series Base Instruction Manual 8 p
- Ohaus Defender 3000 Series Electronic Balance User Manual 36 p
The shortest path to a working setup, usually only a few pages.
Disassembly, diagnostics and part numbers, for repair.
Questions answered in these manuals
What safety precautions should be taken before using the Defender 3000 scale?
Check that the local voltage matches the rating on the nameplate, ensure sensor and power cables are not obstructed, use only approved accessories, work in the recommended environment, disconnect power before cleaning, avoid water exposure, and lift the scale from the bottom when moving it.
From: Ohaus Defender 3000 Electronic Bench Scale User Manual
How is the RS‑232 interface connected to the T31P instrument?
The RS‑232 cable is connected to the RS232 port on the T31P base as described in the external connections section.
From: Ohaus Defender 3000 Electronic Bench Scale User Manual
How do I turn the indicator on?
Press and hold the On button for two seconds until the display test is complete.
How do I set the zero point?
If the terminal is off, press On; if it is on, press Zero.
What are the safety precautions for operating the base?
Operate the base only under specified ambient conditions, ensure the load cell cable does not pose a tripping hazard, and do not operate in hazardous environments.
From: Ohaus Defender 3000 Series T31P/T31XW Indicator Instruction Manual
What causes operational difficulties with the base?
Common causes include loose or incorrect wiring connections, obstructions to the base frame, unstable environments, or incorrect calibration.
From: Ohaus Defender 3000 Series T31P/T31XW Indicator Instruction Manual