GF Signet 2759 pH-ORP System Tester - Manual

Features:
A) Power OFF Button
B) Output simulation buttons and indicators.
Simulate pH and ORP output at fi ve fi xed values:
pH 4, pH 7, pH 10, –700 mV and +700 mV.
Pressing one of these buttons turns the 2759 on.
C) Low battery indicator
D) High Ω switch:
• Adds 1000 MΩ resistance in series with output.
• Simulates high impedance of pH electrodes.
Used to verify proper preamplifi er operation.
E) Adapter cable:
PN 3-2759.391 for use with the 2750 or 2760.
F) Bypass adapter cable:
PN 3-2759.390 (included with 2759) to connect directly to an instrument.
G) Mode selector switch:
Trigger automatic sensor recognition software in Signet pH/ORP instrumentation.
• Top = 1K for a Signet 8900 or 9900 instrument needing PT1000 temperature compensation input.
• Middle = 10K for ORP simulation.
• Bottom = 3K for Signet 5700 and 8750 instruments needing a 3K temperature compensation input.
H) 2750 Sensor Electronics
I) 2760 Preamplifi er
Signet 2759 pH/ORP Simulator and System Tester
1. 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 verifi cation 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
2750 pH/ORP Sensor Electronics or 2760 pH/ORP Preamplifi er. The adapters include a selector switch for pH or ORP simulation. The
switch triggers automatic sensor-recognition software in Signet pH/ORP instrumentation.
2. Specifi cations
mV output accuracy: ............. ± 0.6 mV (± 0.01 pH)
pH system temperature simulation:
w/2750 adapter: ............... 1.1 KΩ = 25 ºC (± 4 ºC)
w/2760 adapter: ............... 3 KΩ
= 25 ºC (± 4 ºC)
High Ω resistor value: ........... 1000 MΩ
Battery: ................................. 9V alkaline
Life: 400 hours
Dimensions: .......................... 100 x 75 x 23 mm
(3.94 x 2.95 x 0.91 in.)
Weight: ................................. 120 grams (5 oz.)
+177 mV
0 mV
-177 mV
-700 mV
+700 mV
mV Value
1. Description
2. Specifi cations
3. Troubleshooting ProcessPro, ProPoint and 2760 Preamplifi er
4. Troubleshooting 2750 pH/ORP Electronics
5. pH and ORP System Response Chart
3-2759.090 Rev. F 10/12 English
*3-2759.090*
English
+GF+
A
B
C
D
E
F
G
I H
10K ORP
1K
3K
V -
4-20 mA
T -
T +
V +
Iso. Gnd
mV Input
Signet
Instrument
China RoHS
For more information go to www.gfsignet.com