OHAUS T31P User manual

Quick Start Guide T31 Indicators
Ohaus Corporation www.ohaus.com i T31 Indicators Quick Start Guide
ASSEMBLY
Both the T31P and T31XW connect to a scale base through a Load Cell Cable that connects to
the Indicator’s Main Printed Circuit Board (PCB). Follow these connection instructions.
Load Cell cable connections are on the rear of both models:
T31P (rear view) T31XW (rear view)
Remove the four screws from the Bottom Housing. Separate the Top and Bottom Housing.
Connect the Load Cell cable leads to Load Cell Terminal J5 on the T31’s Main Printed Circuit
Board. (Note Jumpers W1 and W2. RS232 terminals and LFT Switch are also shown.)
OFF ON
J7 J6
J5
W1 W2
J4
Printed Circuit Board (PCB), T31 Indicator
Jumper Connections
For a 4-wire load cell with no sense wires, short Jumpers W1 and W2.
For a 6-wire load cell that includes sense wires, open Jumpers W1 and W2.
For load cells with an extra ground shield wire, connect the shield to the center position (GND).
+EXC +SIG -SIG -EXC
+SENS GND -SENS
Load Cell wiring.
Pin Connection
J5-1 +Excitation
J5-2 +Sense
J5-3 +Signal
J5-4 GND
J5-5 –Signal
J5-6 –Sense
J5-7 –Excitation
Open/shorted jumpers.
Re-assemble the Top and Bottom Housing.
Load Cell
Terminal J5
Sense
Jumper W1
Sense
Jumper W2
LFT On/Off
Switch
RS232
Terminal J6
(T31P only)
RS232
Terminal J7
(T31XW only)
Power
Receptacle
Strain relief for
Load Cell Cable
RS232
Connector
Strain relief for
Power Cable
Strain relief for
Load Cell Cable
Strain relief for
RS232 Cable

T31 Indicators Quick Start Guide
T31 Indicators Quick Start Guide ii Ohaus Corporation www.ohaus.com
SAFETY PRECAUTIONS
For safe and dependable operation of this product, please comply with the following
safety precautions:
•Verify that the input voltage printed on the power Adapter and the plug type matches
the local power supply.
•Make sure that the power cord does not pose an obstacle or tripping hazard.
•Disconnect the product from the power supply when cleaning.
•Do not operate this product in hazardous or unstable environments.
•Do not drop loads on the pan.
•Use only approved accessories and peripherals, as available.
•Operate the product only under ambient conditions specified in the Instruction Manual.
•Service should be performed by authorized personnel only.
Button
Primary
Function
(Short Press)
ON/ZERO
Turns Indicator on.
If indicator is on,
sets zero.
PRINT
Sends the current value to the COM
port if AUTOP INT is set to Off.
FUNCTION
Initiates an application
mode.
TARE
Performs a tare
operation.
Secondary
Function
(Long Press)
Off
Turns Indicator off.
Units
Changes the weighing unit.
Mode
Allows changing the
application mode.
Press and hold allows
scrolling through modes.
Menu
Enter the User menu.
Menu
Function
(Short Press)
Yes
Accepts the current
setting on the
display.
No
Advances to next item.
ejects current setting, advances
to next available setting.
Increments the value.
Back
Moves back to previous
menu item.
Decrements the value.
Exit
Exits the User menu.
Aborts a calibration in
progress.
Stability
symbol
Indicators for Zero,
Battery,
Calibration Mode,
PCs, TARE
(Battery only
on T31P.)
7-segment, 6-digit
Display Kilogram,
Pound, &
Ounce symbols
Control Buttons
Capacity label
window

Quick Start Guide T31 Indicators
Ohaus Corporation www.ohaus.com iii T31 Indicators Quick Start Guide
OPERATION
To turn the Indicator on, press and hold ON for two seconds. The Indicator
performs a display test, momentarily displays the software version, and
then enters the active weighing mode.
To turn Indicator off, press and hold Off until OFF appears.
Zero is set under the following conditions:
– Automatically at Power On (initial zero).
– Manually: press ZERO. (Scale must be stable and within zero range.)
Manual Tare: When weighing an item that must be held in a container,
taring stores the container weight in memory. Place the empty container on
the scale (example 0.5 kg) and press the TARE button.
The display will show the net weight.
To clear the Tare value, empty the scale and press TARE.
The display shows gross weight (zero if scale is empty).
Weighing: Place the item to be weighed on the scale.
(Sample shown: 1.5 kg, Gross weight.)
Note: To return to the Weighing mode from Parts Counting mode, press
and hold Mode until WEIGH appears.
Verify the indicator: place a known mass on the scale and check if the
reading is accurate. If not, calibrate, using the Calibration Guide.
ADDITIONAL OPERATIONS
Parts Counting: Use this mode to count parts of uniform weight.
The Indicator determines the quantity based on the average weight of a
single part. All parts must be uniform in weight for accurate measurements.
To enter this mode, press and hold Mode until Count appears.
Note: Count must first be enabled in the Mode menu. (See back page.)
Average Piece Weight (APW): When Mode is released, CLr.PW appears.
Press Yes to clear the stored APW. Press No to recall the existing APW.
APW appears. Press Mode to display the APW value.
(If no APW was previously stored, CLr.PW is skipped; PUt10Pcs appears.)
Place 10 pieces on the scale, or press No to increment the sample size.
Choices are 5, 10, 20, 50, 100 and 200.
Place the parts on the scale and read the count.
(If using a container, be sure to tare the empty container first.)
Changing Units of Measure: Press and hold Units until the desired
measuring unit appears. Only units enabled in the Unit Menu are displayed
.
(See back page.)

T31 Indicators Quick Start Guide
T31 Indicators Quick Start Guide iv Ohaus Corporation www.ohaus.com
MENU NAVIGATION
Press and hold Menu until MENU appears.
Use Yes, No, Back,and Exit to navigate:
– Yes Allows entry into the displayed menu.
Accepts the displayed setting and advances to the next menu item.
– No Skips by the displayed menu.
Rejects the displayed setting or menu item and advances to the next available item.
– Back Moves backwards through the upper and middle level menus.
Backs out of a list of selectable items to the previous middle level menu.
– Exit Exits from menu directly to the active weighing mode.
MENU SETUP
*80253021* P/N 80253021