Georg Fischer 2759 Data sheet

Signet 2759 pH/ORP System Tester

Description

The Signet 2759 pH/ORP Simulator is
a battery-powered millivolt generator
that simulates pH values of 4, 7 and
10, plus ORP values of ±700 mV. This
device is useful as a troubleshooting
aid and for general verification of
system operation. However, it is
not a substitute for periodic system
calibration with pH buffers or test
solutions. Accessory adapter cables

(sold separately) enable the 2759
to connect directly to Signet 2720
and 2760 preamplifiers, or 2750
pH/ORP Sensor Electronics. The
adapters include a selector switch
for pH or ORP simulation. The
switch triggers automatic sensor­recognition software in Signet pH/
ORP instrumentation.

Features

• Battery powered
millivolt generator

• Simulates pH and
ORP values

• High impedance
input simulates

preamplified signal

• Verifies system
functionality

• Compatible with
2720, 2750 and 2750
preamplifiers

• Connects to any

Signet pH/ORP
instrument

• Verifies preampli­fier or instrument
electronics

System Overview

Signet
5700, 8750, 8900
Instrument

(sold separately)

Signet
2759
Certification Tool with
bypass adapter cable

Direct
connection
to instruments

Signet
5700, 8750
Instrument

(sold separately)

Signet
2720
Preamplifier

Signet

2759.393
bypass
adapter
cable

Signet
2759
CertificationTool

Signet 8900

0

-250 +250

RELAY 2

RELAY 1

+500

-500
ORP

+750

+1000

ENTER

Instrument

(sold separately)

Signet
2750
Preamplifier

Signet

2759.391
bypass
adapter
cable

-750

-1000

Signet 5700, 8750
Instrument

(sold separately)

Signet
2760
Preamplifier

Signet

2759.391
bypass
adapter
cable

0

-250 +250

RELAY 2

RELAY 1

+500

-500
ORP

-750
+750

-1000
+1000

ENTER

158

www.gfsignet.com

Features

F

Choosing

Products

Instrument

E

E

H

J

Multi-Pa-

rameter

Flow

D

B

A

+GF+

C

Signet

instrument

G

E

I

A) Power OFF Button
B) Output simulation buttons and indica-

tors. Simulate pH and ORP output at five
fixed values: pH 4, pH 7, pH 10, -700 mV
and +700 mV. Pressing one of these but-

tons turns the 2759 on.
C) Low battery indicator
D) High Ω switch: Adds 1000 MΩ resistance

in series with output. Simulates high im-

pedance of pH electrodes. Used to verify

proper preamplifier operation.
E) Adapter cable: use PN 3-2759.393 for

use with the 2720 or PN 3-2759.391 for

use with the 2750 or 2760.
F) 3-2759.390: Bypass adapter cable (in-

cluded with 2759) to connects directly to

G) Mode selector switch: Trigger auto-

matic sensor recognition software in

Signet pH/ORP instrumentation.
H) 2720 Preamplifier
I) 2750 Preamplifier
J) 2760 Preamplifier

an instrument.

2759 pH/ORP System Tester

The Signet 2759 pH/ORP Simulator is a battery-powered millivolt generator that
simulates pH values of 4, 7 and 10, plus ORP values of ±700 mV. This device is useful
as a troubleshooting aid and for general verification of system operation. It is not a
substitute for periodic system calibration with pH buffers or test solutions. Accessory
adapter cables (sold separately) enable the 2759 to connect directly to Signet 2720 and
2760 preamplifiers or 2750 pH/ORP Sensor Electronics. The adapters include a selector
switch for pH or ORP simulation. The switch triggers automatic sensor-recognition
software in Signet pH/ORP instrumentation.

Part Number
3-2759 pH and ORP system tester; includes bypass cable 3-2759.393 for direct connection to Signet

5700 or 8750 instruments.
Additional Accessory Items - optional

3-2759.391 For use with the Signet 2720 preamplifier
3-2759.393 For use with the Signet 2750 sensor electronics or the 2760 preamplifier

pH/ORP

Conductivity/

Resistivity

Pressure, Level

Temperature,

Products

Other

Installation

Wiring &

Reference

Technical

Temperature/

Pressure

Graphs

of Terms

Glossary

3-2759 Example Part number
3-2759 plus 3-2759.393 Example Part numbers

Mfr. Part No. Code Description

3-2759 159 000 762 pH/ORP System Tester for all pH Instruments (includes bypass adapter cable)
3-2759.390 159 000 763 Bypass Adapter Cable for all pH Instruments
3-2759.391 159 000 764 Adapter Cable for use w/2750 and 2760
3-2759.393 159 000 765 Adapter Cable for use w/2720

www.gfsignet.com

159

Reference

Part No.

Index