NAVAC Digital Torque Wrench Owner’s Manual
- June 7, 2024
- NAVAC
Table of Contents
Navac NTW1 Digital Torque Wrench Owner’s Manual
Dear Customers,
Thank you for purchasing our digital torque wrench. This manual will help you to use the many features of your new digital torque wrench. Before operating the torque wrench, please read this manual completely , and keep it nearby for future reference.
Main Features
- Adjustable Jaw 5-30 mm
- Digital torque value readout
- +/- 2% accuracy
- Clockwise and Counter Clockwise operation
- Peak hold and track mode selectable
- Buzzer and LED indicator for the 9 pre-settable target torques
- Water contact indicator
- Engineering units (N-m, ft-lb, in-lb, kg-cm) selectable
- 50 data memory for recall and joint torque auditing
- Auto Sleep after about 5 minutes without use
Names and Functions of Parts
- Head Insert
- Sensor Yoke
- LCD Readout
- Communication Port
- Up/Down Button
- Buzzer
- Power on/Clear Button
- Unit/Setting Button
- Pre-setting Number Selection Button
- Anti-slip Handle
- Opening Size Adjuster
- Battery Cover
- LED Indicator
- Torque Value Readout
- Units(N-m,ft-lb,inlb,kg-cm)
- Pre-setting Number
- Peak/Track Mode
- Water Indicator Viewing Window
Specification
Model No.| Torque
Measuring Range
| Jaw Size| Length
---|---|---|---
NTW1| 4.2~85 N-m| 5-30mm| 12.8 in
325 mm
*Accuracy 1| CW：±2% CCW：±3%
Data memory size| 50
Pre-Sets| 9
Bright LED**| 6 LEDs
(1 Red+5 Green)
Operation Mode| Peak hold/Track
Unit Selection| N-m, in-lb, ft-lb, kg-cm
Head Type| Adjustable Jaw
Battery| AAA x 2
Operating Temperature| 14℉-140℉ (-10℃-60℃)
Storage Temperature| 4℉-158℉ (-20℃-70℃)
Humidity| Up to 90% non-condensing
Drop Test| 3.28 ft (1 m)
Vibration Test 2| 10G
Environmental test 3| Pass
*Electromagnetic compatibility test 4**| Pass
Note:
*1: The accuracy of the readout is guaranteed from 20% to 100% of maximum range + /- 1 increment. The torque accuracy is a typical value. Calibration point is at the middle line of black circle area on the rubber grip. For keeping the accuracy, calibrate the wrench for a constant period time (1 year).
*2: Horizontal and vertical test.
*3: Environmental test:
a. Dry heat
b. Cold
c. Damp heat
d. Change of temperature
e. Impact (shock)
f. Vibration
g. Drop
*4: Electromagnetic compatibility test:
a. Electrostatic discharge immunity (ESD)
b. Radiated susceptibility
c. Radiated emission
Before Using the Wrench
BATTERY INSTALLATION
- Remove the battery cap.
- Insert two AAA batteries matching the -/+ polarities of the battery to the battery compartment.
- Put on the battery cap and fasten it tightly.
ATTENTION:
When opening the battery cover of wrench, you can see a viewing window for the water contact indicator. Through this viewing window, you can check if this wrench is damaged by water penetration if the water contact indicator turns red.
POWER ON AND RESETTING THE WRENCH
- Press to power on the digital torque wrench.
- Usually press to reset the digital torque wrench before using it.
ATTENTION:
If an external force is applied to the torque wrench during power-on/reset or wake up period, an initial torque offset will exist in the memory.
ACTIVATION DURING SLEEP MODE
- The wrench will auto sleep after about 5 minutes without use for power saving. Press to wake up the wrench during the sleep mode.
RESETTING THE WRENCH
- If the wrench does not function normally, Press together to reset the wrench.
LOW BATTERY VOLTAGE PROTECTION
- If the battery serial voltage is in low voltage status, the wrench will display a battery symbol and then turn off after a while.
WHEN CHANGING THE TYPE OF HEAD
-
If you use the different head of the wrench, the reading on the display will be different for the different length of the head. Please refer to the following explanation.
D : The set torque
D1: The actual torque applied to the nut.
L1: The normal length
L2: The extended length
L3: The length from the fitting pin to the calibration point. -
Reference dimension for each model
| Model | L1(mm) | L3(mm) |
|---|---|---|
| NTW1 | 85.9 | 175 |
Setup
STEP 1: PRE-SETTING NO.
STEP 2: UNIT SELECTION
STEP 3: SET TORQUE VALUE
STEP 4: PEAK HOLD /TRACK MODE SELECTION
Track Mode Operation
Peak Hold Mode Operation
Peak Hold Mode Recorded Value Review
Maintenance and Storage
ATTENTION:
- A one-year periodic recalibration is recommended to maintain accuracy.
- Please contact NAVAC technical support for calibration details.
CAUTION:
- Over-torque (110% of Max. torque range) could cause breakage or lose accuracy.
- Do not shake violently or drop wrench.
- Do not use this wrench as a hammer.
- Do not leave this wrench in any place exposed to excessive heat, humidity, or direct sunlight.
- Do not use this wrench in water (not waterproof).
- If the wrench gets wet, wipe it with a dry towel as soon as possible. The salt in seawater can be especially damaging.
- Do not use organic solvents, such as alcohol or paint thinner when cleaning the wrench.
- Keep this wrench away from magnets.
- Do not expose this wrench to dust or sand as this could cause serious damage.
- Do not apply excessive force to the LCD panel.
- Apply torque slowly and grasp the center of the handle. Do not apply load to the end of handle.
Battery Maintenance
- When the wrench is not going to be used for an extended period of time, remove the battery.
- Keep a spare battery on hand when going on a long trip or to cold areas.
- Do not mix battery types or combine used batteries with new ones.
- Sweat, oil and water can prevent a battery’s terminal from making electrical contact. To avoid this, wipe both terminals before loading a battery.
- Dispose of batteries in a designated disposal area. Do not throw batteries into a fire.
Rev. NTW1 v1
Documents / Resources
|
NAVAC Digital Torque
Wrench
[pdf] Owner's Manual
Digital Torque Wrench, NTW1
---|---
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>