GF Signet 2764-2767 Differential DryLoc pH_ORP Electrodes - Manual (Page 2)

2 Signet 275X, 276X, 2777X Series pH and ORP Electrodes
Specifi cations:
276X Series Differential Electrodes
277X Series Threaded Electrodes
General
Compatibility Signet 2750 and 2760
Shipping Weight 0.25 kg (0.55 lbs.)
Operating Range
276X Series 0 to 14 pH, ± 1500 mV ORP
277X Series 0 to 14 pH, ± 1500 mV ORP
Reference Electrolyte
276X Series Buffered KNO
3
solution
277X Series KCI/AgCl gel with KNO
3
salt bridge
Reference Element
276X Series
pH glass electrode
277X Series Ag/AgCl
Temperature Sensor
276X Series pH
3 KΩ, PT1000 RTD, or 300 Ω
277X Series pH 3 KΩ or PT1000 RTD
276X Series ORP 10 KΩ ID for Signet instruments;
PT1000 RTD or 300 Ω options for use
with other instruments
277X Series ORP 10 KΩ ID for Signet instruments
Temp response time 
95%
< 1 min.
Wetted Materials
Body Ryton ®
Reference junctions PTFE
Sensing surface Glass (pH), Platinum (ORP)
O-rings FPM
Solution ground Carbon graphite (276X series only)
Standards & Approvals
CE
Manufactured under ISO 9001 and ISO 14001
Operating Temperature
276X Series
0 °C to 95 °C (32 °F to 203 °F)
277X Series 0 °C to 85 °C (32 °F to 185 °F)
Storage Temperature > 0 °C (32 °F)
Max Operating Pressure 6.89 bar (100 psi)
0 40 50 60 70 °C 90 100 80
40
60
80
100
4
2
6
6.89
psi bar
20
10 20 30
32 122 °F 212 176 50 86
277X Series
0 °C to 85 °C @ 6.89 bar
(32 °F to 185 °F @ 100 psi)
pH/ORP Electrodes
276X Series and 277X Series
Pressure vs. Temperature
276X Series ONL
Y
Specifi cations:
275X Series Wet-Tap Electrodes
General
Compatibility Signet 2750 and 2760
Shipping Weight 0.25 kg (0.55 lbs.)
Operating Range 0 to 14 pH, ± 2000 mV ORP
Reference Electrolyte Solidifi ed Acrylamide Gel
Wet-Tap electrolyte 3.5 M KCl
Reference Element Ag/AgCl
pH Temp Sensor PT-1000 or 3K Balco
ORP Identifi cation 10 KΩ ID for Signet instruments
Temp response time,

Wet-Tap 438 s
ORP response time Application dependent
Effi ciency > 97% @ 25 °C (77 °F)
Impedance (pH) < 150 MΩ @ 25 °C
Sodium Ion Error < 0.05 pH in 0.1 M Na+ ion at 12.8 pH
Wetted Materials
Wet-Tap body Glass or PAS (Poly Aryl Sulphone)
Wet-Tap Junctions Porous PTFE
Sensing surface Glass (pH), Platinum (ORP)
O-rings FPM
Solution ground Carbon graphite (276X series only)
Standards & Approvals
CE
Manufactured under ISO 9001 and ISO 14001
Operating Temperature
0 °C to 85 °C (32 °F to 185 °F)
Storage Temperature
0 °C to 85 °C (32 °F to 185 °F)
Maximum Temperature and Pressure rating
6.89 bar @ 0 °C to 65 °C (100 psi @ 32 °F to 149 °F)
4.00 bar @ 65 °C to 85 °C (58 psi @ 150 °F to 185 °F)
China RoHS (Go to www.gfsignet.com for details)
China RoHS (Go to www.gfsignet.com for details)
Ryton ® is a registered trademark of Chevron Phillips Chemical