OHAUS STARTER 2100 User manual

STARTER 2100
Bench pH Meter
Instruction Manual

Table of Contents
1Introduction..........................................................................1
1.1 Safety measures.............................................................................. 1
1.2 Display and controls....................................................................... 3
2Installation............................................................................5
2.1 Package contents............................................................................ 5
2.2 Installing the built-in electrode arm .............................................. 6
2.3 Installing power adapter................................................................. 6
2.4 Installing the electrodes................................................................. 7
3STARTER 2100 operation....................................................8
3.1 Calibration........................................................................................ 8
3.1.1 Buffer group................................................................................... 8
3.1.2 Performing 1-point calibration ....................................................... 9
3.1.3 Performing 2-point calibration....................................................... 9
3.2 Sample measurement................................................................... 10
3.2.1 pH measurement......................................................................... 10
3.2.2 mV measurement........................................................................ 10
3.3 Temperature measurement .......................................................... 10
4Setup...................................................................................10
4.1 Set MTC temperature.................................................................... 10
5Maintenance.......................................................................11
5.1 Error message................................................................................11
5.2 Meter maintenance.........................................................................11
5.3 Electrode maintenance..................................................................11
5.4 Self-diagnosis.................................................................................11
5.5 Recover factory settings .............................................................. 12
6Specifications ....................................................................13
7Buffer groups.....................................................................14

1
1 Introduction
Thank you for choosing OHAUS product.
Please read the manual completely before using the STARTER 2100 bench pH meter to avoid
incorrect operation.
STARTER 2100 has an excellent performance/price ratio and is designed for customers who want a
simple and easy-to-use bench pH meter with 0.01pH accuracy. Many accessories and optional
such as different electrodes for different applications, bottle buffer solutions are also available
from OHAUS.
You will find much helpful functionality in the meter. A few of the many existing features are:
Large liquid crystal screen with well-organized display
Electrode condition icon on the display to show the pH electrode performance
Can recall last calibration data
Quick Guide attached in the meter to help user operate
1.1 Safety measures
Measures for your protection
Never work in an environment subject to explosion hazards! The housing of
the instrument is not gas tight. (explosion hazard due to spark formation,
corrosion caused by the ingress of gases)
When using chemicals and solvents, comply with the instructions of the
producer and the general lab safety rules.
Measures for operational safety
Do not unscrew the two halves of the housing
Dry off any liquid spills immediately! The instrument is not watertight
Exclude the following environmental influences:
oPowerful vibrations
oDirect sunlight
oAtmospheric humidity greater than 80%
oCorrosive gases present
oTemperatures below 5 °C and above 40 °C
oPowerful electric or magnetic fields

2
FCC Note: This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a residential area is
likely to cause harmful interference in which case the user will be required to correct the
interference at his own expense.

3
1.2 Display and controls
Displays
1
Electrode condition
Slope: more than 95%
and offset: ±(0-15) mV
Electrode condition is good
Slope: 90-95%
or offset: ±(15-35) mV
Electrode condition is
acceptable
Slope: less than 90%
or offset: ±(35-60) mV
Electrode condition is not
good or needs cleaning
2
Measurement icon - , measurement or calibration is running; disappear means the
reading is locked, no matter measurement
3
Calibration icon - , 1point or 2point calibration in progress
4
pH/mV reading or slope(%)in calibration
5
Error message - Err
6
Auto temperature compensation - ATC ; Manual temperature compensation - MTC
7
Temperature during measurement or Offset (mV) in calibration
2
3
1
4
6
7
5

4
Controls
Button
Press & release
Press & hold
for 3 seconds
- Start measurement or lock
current reading
- Confirm temp setting
- Start calibration
- Review the latest calibration
data (slope, offset)
- Meter turn on
- Exit, return to measurement
screen
- Meter turn off
- Entered temperature setup mode
- Increase temp. value when in
temp. setup mode
- Switch between pH and mV
measuring modes
- Decrease temp. value when in
temp. setup mode
- Start self-diagnosis

5
2 Installation
Carefully unpack the box.
2.1 Package contents
The model ST2100-B (basic model) has the following items:
In addition to ST2100-B content, the model ST2100-E package also includes the following:
In addition to ST2100-E content, the model ST2100-F package also includes the following:
You also could order other Ohaus pH electrodes for different applications.
Each pH buffer powder should be dissolved in 250ml pure water or deionized water in volumetric
flask. You also can order the bottle buffer solution from Ohaus.
Accessories:
Model
Description
Item NO
ST310
3-in-1 plastic refillable pH Electrode
83033965
ST210
2-in-1 plastic refillable pH Electrode
83033966
ST320
3-in-1 plastic gel pH Electrode(no need to refill)
83033967
ST230
2-in 1 glass muddy sample pH Electrode
83033968
STPURE
2-in-1 glass pure water sample pH Electrode
83033969
STTEMP30
Temperature Electrode
83033970
STORP1
Gel plastic ORP electrode
30038555
STORP2
Refillable glass ORP electrode
30038553
STREF01
Ag/AgCl reference electrode
30059253
Buffer powder set (4.01; 7.00; 10.0)
83033971
Buffer pH4.01 250ml
30065083
Buffer pH7.00 250ml
30065084
Buffer pH10.00 250ml
30065086
pH electrode Reference Electrolyte
30059255
ST2100-B
Units
STARTER 2100
1
Built-in electrode arm
1
12V Power supply
1 set
ST210 2-in-1 pH electrode
1
pH Buffer Power Set (4.01, 7.00, 10.01)
1 set
STTEMP30 temperature electrode
1

6
pH electrode protection solution
30059256
pH sensor protect bottle(10 in bag)
30064800
Electrode holder attached (2100)
30058732
Electrode holder stand alone (3100/3100C)
30058733
2.2 Installing the built-in electrode arm
Install the built-in electrode arm on the left or right sight of the STARTER 2100 meter.
Remove the arm hole rubber cover from the meter, Insert the metal stick into the hole and
screw to fasten it.
Install the upper electrode arm upon the metal stick from above; adjust it to a moderate
height.
2.3 Installing power adapter
Choose the right adapter clip, insert into the power adapter slot. Ohaus balance power supply is
also 12V which could also be used for the pH meter.