User Guide

ManualsBrandsHanna Instruments ManualsSensorsHI 2400

PROBE CONNECTION & PREPARATION

To prepare the instrument for use, connect the D.O. probe to the meter

securely by aligning the pins with the socket located on the back of the meter,

pushing the plug in and tightening the threaded ring.

Probes shipped from Hanna Instruments are dry. To hydrate the probe and

prepare it for use, connect it to the meter and proceed as follows:

1. Remove the red and black plastic cap. This cap is

for shipping purposes and can be thrown away.

2. Wet the sensor by soaking the bottom 2½ cm (1")

of the probe in electrolyte (HI 7041S) for 5 min-

utes.

3. Rinse the membrane cap (HI 76407A supplied in

the kit with the meter) with electrolyte solution

while shaking it gently. Refill with clean electrolyte

solution.

4. Gently tap the sides of the membrane cap

with your finger tip to ensure that no air

bubbles remain trapped. To avoid damag-

ing the membrane, do not tap the mem-

brane directly on the bottom.

5. Make sure that the rubber O-ring sits prop-

erly inside the membrane cap.

6. With the sensor facing down, slowly screw

the cap clockwise. Some electrolyte will over-

flow.

When not in use and during polarization (see page 10),

use the protective transparent cap supplied in the kit with

the meter.

Shipping

cap

black

red

THEN SCREW

BACK ON

THEN TAP

ILL FIRST

ADDITIONAL INFORMATION

If you are not using Hanna Instruments HI 92000 application software,

please find below some additional information to help your connection to the

PC.

SENDING COMMANDS FROM PC

With terminal programs such as Telix

and Windows Terminal

, it is possible

to remotely control your HI 2400. Use HI 920010 cable to connect the meter

to the PC, start the terminal program and set the communication options as

follows: 8, N, 1, no flow control.

Command Types

To send a command to the D.O. meter the scheme is:

This line makes the computer send a Data Link Escape character, the com-

mand expressed as a number or a 3-character sequence and a CR character.

Note: Windows Terminal

and all the other terminal programs that support

the ANSI escape sequence, represent the DLE character by the string

‘^P’ and the CR character by the string ‘^M’. E.g. the line

‘^PPPM^M’ sets the range to ppm.

Commands not requiring an answer from the meter:

PPM sets the range to ppm D.O.

PER sets the range to % D.O.

TELIX

is registered Trademark of “Deltacomm”

Windows Terminal

are registered Trademark of “Microsoft Co.”