Corning 317 Instruction Manual

Calibrating

1. Select O2% mode

2. 1-point calibration

Example

%

hold probe
10␣ mm
above fresh
water

Auto endpoint or

to return to sample measurement, or
continue with step 3 for the second cal
point

3. 2-point calibration - repeat step 2, placing the probe
in zero oxygen standard

auto or manual endpoint

4. Rinse probe

H20

99.

25.0°c

cal1

ATC

100.

25.0°c

cal1

ATC

0.

25.0°c

cal 2

ATC

%

%

Measuring Samples

1. Select O2% or O2 mg/L mode

2. Measure sample

Example

%

89.

25.0°c

sample

Auto endpoint or

3. Rinse and store probe

■ If you press

measuring immediately, and you will not need to press

read

■ The decimal point flashes during measurement.

When␣ the probe output has stabilized
the␣ stability␣ indicator␣ appears.
Manual endpoint - press
Auto endpoint - the 317 automatically endpoints

mode

to select % or mg/L, the 317 begins

to start the sample measurement.

read

ATC

89.

25.0°c

ATC

H20

to endpoint

%

Using the Memory

Entering a Reading into Memory

The 317 can store up to 10 endpointed results.

Press

M

when the measurement has endpointed.

M 1 is displayed (or M 2 to M 10 if readings have
already been stored).

M indicates the memory is full.

Recalling Memory

You can only recall stored memories if the current
measurement has endpointed.

R

- the last stored memory is displayed. Press ▼

Press
to scroll through memories. RM 1 to RM 10 indicates
which memory is being displayed.

Clearing last Memory

Press R - the last stored memory is displayed. Press
to clear this memory. Only the last entered measure­ment can be cleared, i.e. M 2 cannot be cleared without
first clearing M 3.

M

Clearing all Memories

Press

R

then press ▼ until M C is displayed.

Press

M

to clear the memories (press

without clearing the memories).

read

to exit

Using Continuous
Measurement␣ Mode

In normal mode, the 317 will auto-off 10 minutes after
the last key press, whether the unit is measuring or has
endpointed. If you select continuous measurement
mode, the 317 will not auto-off.

To select continuous measurement mode press and

M

for 2 seconds.

hold

Using Continuous
Data Transfer Mode

In continuous data transfer mode readings are sent to
the data output approximately every second. If the
measurement endpoints (manually, or using auto
endpoint) data transfer stops. If you recall memories all
stored readings are output (from the first to the last
stored).

To select continuous data transfer mode press and hold

R

for 2 seconds.

■ If you want to use this mode to monitor continually,

you also need to select continuous measurement
mode.

■ To maintain continuity of sample readings

calibration data is not output in continuous data
transfer mode.

Interfacing

Serial Output

The 317 can interface with computers, printers and
other RS232 compatible devices. The RS232
Interface Kit (Cat. 470445) converts data from the 6
pin socket to RS232 format.

Type of communication - uni directional, baud rate
1200, data format - 1 start bit : 8 data bits : 1␣ stop
bit : no parity.

■ Data is sent to the output socket at

measurement endpoint (manual or automatic)
and memory recall.

■ To use the output to monitor continually, you

need to select continuous measurement mode
and continuous data transfer mode.

CAUTION: The 317 does not meet IP67 when the
waterproof output socket seal has been removed.

Maintenance

General

The 317 requires very little maintenance.
Occasionally wipe the meter with a damp cloth. The
casework is made of ABS/PC which is known to be
affected by some organic solvents, including
toluene, xylene and methyl-ethyl-ketone. It is good
practice to wipe away any spillages as soon as they
occur.

Every six months inspect and lightly grease the
socket seals, and connector and battery ‘O’ rings
with the grease supplied. Replace the ‘O’ rings if
damaged.

CAUTION: To prevent permanent damage care
should be taken to prevent liquid entering the 317
when fitting probes or replacing batteries. If it does,
remove the batteries and allow the meter to dry
before using.

Replacing the Batteries

Replace batteries as soon as the low battery
indicator␣ appears. To prevent data loss always turn
the 317 off using the
batteries. See the Installation section for details on
installing batteries. Do not mix old and new
batteries.

NOTE: Check the Program Menu settings after
changing the batteries.

Probe Maintenance

Clean the probe tip and refill/replace the membrane
cap as described in the dissolved oxygen probe
product insert.

mode

key before replacing the

Problem Solving

+ Err 1 - measurement out of range

•

Check probe is connected and immersed in sample.
Check wetting cap has been removed.

Err 2 - cal 2 out of range

Check fresh zero oxygen solution is used. Clean the
probe tip and refill the membrane cap. Check the
membrane for damage, replace as necessary. Check
barometric pressure and salinity settings.

Err 3 - cal 1 out of range

Clean the probe tip and refill the membrane cap.
Check the membrane for damage, replace as
necessary. Check barometric pressure and salinity
settings.

Data Entry Errors

Entered barometric pressure value changes to 500
or 1100 - the 317 will not accept barometric pressure
values outside this range.

Entered salinity value changes to 0 or 70 - the 317
will not accept salinity values outside this range.

Operating Hints

■ Remove the wetting cap from the end of the

probe before use.

■ The probe should remain connected to the 315

to maintain polarization.

■ When measuring, the sample should be stirred

at a constant speed.

■ Rinse probe with distilled water between

measurements, and after use.

■ Do not use standards after the expiration date.

■ Zero oxygen standard absorbs oxygen if left

exposed to air and this will cause inaccurate
calibrations. Always use fresh standard.

■ For greatest accuracy, standards and samples

should be at the same temperature.

■ Regular maintenance is important to ensure

optimum performance. Refer to probe insert for
details.

317 Dissolved Oxygen

Corning Incorporated
Science Products Division
Corning, New York 14831
USA. Tel: [phone]

For Technical Assistance:
US and Canada call 1-800-222-7740/607-974-0353

Specifications

Measurement Ranges

0 to 200%

O

2

0.0 to 20.0 mg/L

Temp. –5.0 to 105.0°C

Resolution

1%

O

2

0.1 mg/L

Temp. 0.1°C

Relative Accuracy

1%

O

2

Temp. ± 0.5°C

Memory

10 memories

Barometric Pressure

500 to 1100 mbar,
selectable

Salinity

0 to 70 ppt, selectable

Temperature
Compensation

0.0 to 40.0°C (ATC probe)

Display

LCD

Outputs

Serial

Auto Off

10 minutes from last
keypress

Operating Conditions

Temperature 5 to 40°C
Humidity 5 to 80%
(non condensing)

Size/Weight

3 1/4 x 7 3/4 x 1 3/4 inches
(85 x 200 x 45 mm)
1lb (0.45kg)

Batteries

4 x AA/LR6
alkaline1.5V␣ d.c.

Regulatory Compliance

Complies with Part 15
of␣ FCC Rules (Class A
computing device).
Waterproof to IP67*

*when used as directed with
probes with waterproof
covers.

470457 a595

Installation

Input Connectors

connector
cap

’O‘ ring
seal

data output
socket

input
socket

Connect the dissolved oxygen probe as follows:

input socket

alignment

‘O’ rings

connector
cover

1. Make sure connector cap is loosened.

2. Connect the probe mini-DIN connector to the
meter input socket.

3. Lightly grease the ‘O’ rings with the grease
supplied, then slide the waterproof cover over
the socket. Make sure the cover is lined up
correctly with the socket.

NOTE: Lightly greasing the cables will help removal
of the connector cover in future.

4. Finger tighten the connector cap.

5. Allow a minimum of 1 hour for polarization.

CAUTION: To avoid damaging the connector always
loosen the connector cap before removing the
cover.

Installing the Batteries

hand grip coin battery

1. Remove the hand grip, and unscrew the battery
cover using a coin.

2. Insert the batteries, following the illustration.

3. Lightly grease the ‘O’ ring seal, and replace the
battery cover and hand grip.

cover

Fitting the Wrist Strap

Program Menu

The Program Menu allows you to set barometric
pressure and salinity. The correction will only be applied

mg/L mode. You can only enter the Program Menu

in O

2

if the current measurement has endpointed.

Press and hold the
the Program Menu - appears on the display.

mode

Press
exit the Program Menu at any time. If you press
when a value is flashing that value will not be entered.

P1 Barometric pressure affects the partial pressure

of O
barometric pressure can be set between 500
and 1100 mbar. The 317 has a preset
barometric pressure value of 1013 mbar. Use ▲
and ▼ to change the value, press
enter the value and move on.

P2 Salinity affects the solubility of O

set between 0 and 70 ppt (g/L). The 317 has a
preset salinity value of 0 ppt. Use ▲ and ▼ to
change the value, press
and move on.

read

Press

Correction Tables

Barometric Pressure Salinity

Entered BP Correction Entered Salinity Correction

mbar Factor (%) ppt Factor (%)

500 49.4 0 100.0
550 54.3 5 97.2
600 59.2 10 94.5
650 64.2 15 91.8
700 69.1 20 89.2
750 74.0 25 86.7
800 79.0 30 84.3
850 83.9 35 81.9
900 88.8 40 79.6

950 93.8 45 77.4
1000 98.7 50 75.2
1013 100.0 55 73.1
1050 103.7 60 71.1
1100 108.6 65 69.1

mbar = mmHg x 1.333

inches Hg x 33.858

mode

key for 2 seconds to access

to scroll through the options. Press

, and therefore the values obtained. The

2

mode

, and can be

2

mode

to enter value

to exit the Program Menu.

70 67.1

read

read

to

to

Controls

Press Press & Hold
& Release for 2 Seconds

starts/stops turns auto
measurement endpoint on/off

starts calibration no action

selects O
O

stores result turns continuous
in memory (up to 10) measurement

recalls result turns continuous
from memory data transfer

% or enters Program Menu

2

mg/L/off

2

on/off

on/off

Display

stability/auto
endpoint indicator

units shown

low batt.
indicator
shown
here

100.

25.0 °c 10

ATC

temperature

%

M

memory, cal and
error number
shown here

here

prog. menu,
cont. read and
data transfer
icons shown
here

Spares and Accessories

476622 D.O. Probe (6' cable)
476623 D.O. Probe (30' cable)
470463 Sinkable Stainless Steel Sleeve and Cage
470444 Rubber Meter Holder and Neck Strap
470443 Hard Carrying Case
470447 Wrist Strap
470448 Instrument Sealing Kit
470449 Neck Strap
470445 RS232 Interface Kit
470438 Batteries, AA, 4/pk
470439 Guide Book to Conductivity/Dissolved Oxygen
473736 Fill Solution and Membrane Caps, 3/pk
470466 D.O. Electrode Fill Solution, 30 mL
477656 D.O. Sensor Cleaning Compound
473625 Zero Oxygen Standard, 500 mL
473739 Zero Oxygen Standard, Sachets, 30/case